Mv Circuit Breaker Switchgear - Siemens
Content
SECTION [26 13 13] [16341] MEDIUM-VOLTAGE CIRCUIT BREAKER SWITCHGEAR (GAS-INSULATED, VACUUM) PART 1 - GENERAL
1.1 A. SCOPE This specification defines the technical requirements for indoor or outdoor type, gas-insulated s itchgear !"#S$, equipped ith %acuum circuit &rea'ers rated (.)*'+, ,.-.'+, 1.'+, -).*'+, or /,'+. This specification co%ers the design, manufacture, factory production testing and field ser%ice assistance during installation and commissioning of S0 * gas insulated %acuum circuit &rea'er s itchgear and associated equipment. 1E2ATE3 3OC45E6TS A. 1./ A. 3ra ings and general pro%isions of the Contract, including "eneral and Supplementary Conditions and 3i%ision 1 Specification Sections, apply to this Section. S475#TTA2S Su&mit shop dra ings and product data for appro%al and final documentation in the quantities listed in the data sheet. All transmittals shall &e identified &y purchaser name, pro8ect location and purchaser9s order num&er. 3ocuments for Appro%al: 1. "eneral arrangement dra ing sho ing dimensioned ele%ation and floor plan, side %ie s, foundation details and one-line diagram -. Panel arrangement dra ing sho ing layout of de%ices on the panel doors /. Three line diagrams (. Schematics .. 6ameplate engra%ing dra ings *. 7ill of material 0inal 3ocuments: 1ecord documentation to include: 1. 3ocuments listed a&o%e in 1./.7 -. ;iring diagrams /. 1ecommended spare parts list for start-up support (. #nstruction manual Product 3ata: #nclude features, characteristics and ratings of indi%idual circuit &rea'ers and other components. Pro%ide time-current characteristic cur%es for o%ercurrent protecti%e de%ices on request. Shop 3ra ings: 3etail equipment assem&lies and indicate dimensions, eights, required clearances, method of field assem&ly, components and location and si<e of each field connection. #nclude the follo ing: 1. 6ameplate legends. -. 7us configuration ith si<e and num&er of conductors in each &us run, including phase and ground conductors of main and &ranch &uses. /. Current ratings of &uses. (. Short-time and short-circuit ratings of s itchgear assem&ly. .. ;iring 3iagrams: 3etail iring for po er, signal and control systems including differentiation &et een manufacturer-installed and field-installed iring. 1E2ATE3 STA63A13S A. Comply ith requirements of latest re%isions of applica&le industry standards, specifically including the follo ing: 1. "#S S itchgear: [Project Name] [26 13 13] [16341]-1
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a. #EC *=->, !*--)1--==$ &. #EC *=*>( !*--)1-1$ c. #EC *==((-) d. #EC *==((-, e. A6S# C/).-=.- !;here Applica&le$ f. A6S# C/)... !;here Applica&le$ g. 42 listed Circuit 7rea'ers: a. #EC .* !*--)1-1==$ &. A6S# C/).=( c. A6S# C/).=> d. A6S# C/).=* e. A6S# C/).=1= f. A6S# C/)..( ! here applica&le$ Current Transformers a. #EEE C.).1/ &. #EC *==((-1 c. #EC *==((-) +oltage Transformers a. A6S# C.).1/ &. #EC *==((-c. #EC *==((-, 3isconnect, isolation and /-position s itches: a. #EC *=1-> !*--)1-1=-$ &. A6S#?60PA )= !6EC$
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@4A2#TA ASS41A6CE 5anufacturer @ualifications: Engage a firm ith at least 1. years eBperience in manufacturing medium %oltage gas insulated %acuum circuit &rea'er s itchgear. The manufacturer of the s itchgear assem&ly shall also manufacture the medium %oltage circuit &rea'ers. 3E2#+E1A, STO1A"E A63 CA632#6" A. 7. C. 3eli%er in con%enient shipping groups. Shipping groups shall not eBceed , ft. in length. Circuit &rea'ers shall &e shipped inside their respecti%e cells. Outdoor al'-in single aisle s itchgear shall &e shipped fully assem&led eBcept for necessary shipping splits for transportation and handling.
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PART 2 - PRODUCTS
-.1 A. 5A640ACT41E1S [The medium voltage gas insulated vacuum circuit breaker switchgear assembl shall be !"#$"% manu&actured b 'iemens or (re)a((roved e*ual+ #((roved manu&acturers are as &ollows, 1. '-./.N' -. + ] 1AT#6"S A. 7. System Configuration: S itchgear shall &e suita&le for application in three-phase, *=-C<, grounded-neutral system. Electrical 1atings: 1. 6ominal System +oltage, '+: [4+16] [0+2] [12+40] [13+2] [13+!] [22] [26] [34+1] -. 5aBimum 3esign +oltage, '+: [4+06] [!+21] [11] [20] [3!] /. 1ated 5ain 7us Current, A: [1222] [2222] [2122] [4222D [Project Name] [26 13 13] [16341]-2
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1ated #nterrupting !Short-Circuit$ Current, 'A Symmetrical: [21] [31+1] [42] 1ated Short-Time Current, 'A !/ Second$: [21] [31+1] [42] 1ated Po er-0requency ;ithstand +oltage, '+ !1 5inute$: [13] [36] [62] [!2] 1ated #mpulse ;ithstand +oltage, '+ 7#2: [62] [31] [121] [112] [102] [222] Continuous Current 1ating of the 5ain 7rea'er: [ ] amperes Continuous Current 1ating of the Tie 7rea'er: [ ] amperes Continuous Current 1ating of the 0eeder 7rea'er: [ ] amperes
"E6E1A2 1E@4#1E5E6TS The medium %oltage, gas-insulated %acuum circuit &rea'er s itchgear shall &e metal-clad as defined in #EC *=*>( and shall meet A6S#?#EEE C/).-=.- eBcept for differences related to fiBed circuit &rea'er construction and isolated-phase &us arrangement. All components of the s itchgear !i.e., circuit &rea'ers, &us&ar, disconnect s itches, grounding s itches, +T9s etc.$ shall &e in grounded metal enclosures. The construction shall ithstand forces !repeatedly, ithout distortion$ caused &y closing and opening of the circuit &rea'er. The s itchgear shall &e capa&le of ithstanding all stresses produced &y fault conditions up to and including the rated short-circuit current specified in -.-.7 ithout damage. Each current carrying component of the equipment shall &e capa&le of continuous operation at the specified ratings ithout eBceeding the maBimum temperature rise stated in the A6S# and #EC standards. The s itchgear lineup shall &e designed and manufactured ith pro%ision for future eBpansion on each end. ;hen eBtending either end of the s itchgear, it shall only &e necessary to e%acuate the S0* gas compartment and remo%e end panels for the associated &us&ars. 6o other gas compartments or components shall &e affected. The enclosures housing the primary !medium %oltage$ components shall &e constructed of gastight cast aluminum. 0errous metal components shall &e finished ith electrostatically applied paint finish in manufacturer9s standard light gray color. 5echanism parts not suita&le for painting shall &e plated for corrosion resistance. The medium %oltage enclosure shall &e factory assem&led and modular in design. 5edium %oltage components shall &e in cast aluminum, hermetically sealed, single pole !phase$ enclosures to eliminate the possi&ility of phase to phase faults in the s itchgear. The medium %oltage enclosure shall &e pressuri<ed ith S0 * gas to isolate energi<ed components from en%ironmental influences, thus allo ing long inter%als &et een maintenance. 5inor maintenance of the primary components shall &e required at 1=-year inter%als and ma8or maintenance at -=-year inter%als. The s itchgear shall &e designed so that normal ser%ice, inspection, maintenance, grounding of high %oltage ca&les and elimination of electrostatic charges can &e carried out safely ith ad8acent sections energi<ed. A continuous ground &us shall run the length of a s itchgear group for relia&le grounding. Each feeder section housing shall &e connected to the s itchgear ground &us. Conductors and connectors for the &us&ars shall &e copper, designed to carry rated continuous current at (=EC am&ient temperature and shall ithstand the rated short-circuit current specified in -.-.7. The surfaces of the conductors shall ha%e a smooth finish to pre%ent any electrical discharges. 3isconnect and ground s itch contacts shall &e sil%er-plated to pro%ide high conducti%ity and shall match the rating of the associated &us&ar or circuit &rea'er. The connection points &et een &us&ars and?or components shall &e easily accessi&le to allo assem&ly and testing to &e accomplished ithout ma8or disassem&ly or loss of gas pressure in ad8acent compartments. The front of each s itchgear section shall consist of four !($ separate compartments for the follo ing main components: 1. Protecti%e relays and controls located in the top compartment. Terminal &loc's, CT connections, +T connection and miscellaneous control de%ices shall also &e located in [Project Name] [26 13 13] [16341]-3
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this compartment. Connection terminal &loc's for purchaser9s eBternal connections ill &e located in this compartment. Operation of the s itchgear shall not &e affected &y opening any of the lo %oltage compartment doors. Three-position s itch operating mechanism ith all ser%icea&le items accessi&le from the front. Circuit &rea'er operating mechanism ith all ser%icea&le items accessi&le from the front. The lo er compartment shall &e a%aila&le for additional mounting of lo %oltage components or eBternal connection, if required.
Each section shall ha%e a mimic diagram of sufficient si<e and color contrast to &e plainly %isi&le to an operator. 5imic diagrams shall sho circuit &rea'ers, disconnect s itches, grounding s itches and &us&ar connections. 7us&ar +Ts or &us&ar ca&le connections should also &e sho n. The mimic diagram shall &e on the front of each section, in con8unction ith the mechanical position indicators. S0* gas compartment: Each feeder gas compartment shall &e suita&ly di%ided into separate sections, hich are isolated &y gas-tight &ushings. The di%ision of compartments shall ta'e into account the effects of faults ithin the compartments such that in the e%ent of an internal fault, a pressure relief de%ice operates &efore internal pressure eBceeds the design limit of the compartment. The indi%idual gas-sealed compartments shall &e capa&le of &eing separately e%acuated for inspection or maintenance, hile 'eeping the ad8acent compartments pressuri<ed to rated pressure. 2ea'age of gas from the s itchgear enclosures shall not eBceed =..H of the gas per compartment per year. S itchgear feeders shall &e compartmentali<ed in single-phase, isolated-phase, construction, ith: 1. A minimum of four !($ gas compartments per standard feeder ithout optional equipment. -. #f &us&ar +oltage Transformers are specified, these shall &e installed in separate gas housings, isolated from the main &us&ar &y gas-tight &ushings ith their o n gas monitoring and pressure relief system. #t shall &e furnished ith an isolation s itch and primary fuses. The gas compartments shall &e pro%ided ith ring type seals at intersections &et een compartments and at positions here sliding or rotating shafts enter a compartment. The seals shall &e capa&le of ithstanding the gas pressure of the compartments under all ser%ice conditions. Seals shall &e O-1ing type. Pressure 1elief 3e%ices: Each gas compartment shall &e pro%ided ith a pressure relief de%ice to limit the pressure to a safe le%el in the e%ent of an internal fault. 3esigns ithout pressure relief are not accepta&le. The pressure relief de%ices shall &e designed such that discharges resulting from internal faults are directed a ay from locations here personnel may &e present. The preferred location for the &us&ar pressure relief shall &e such that gases are eBhausted through the top of the enclosures. All pressure relief de%ice designs shall &e certified &y an arc fault design test in accordance ith #EC *=->, standards. #nsulation: Sulfur CeBafluoride !S0*$ gas and epoBy cast resin insulating materials shall &e employed for the insulation of primary conductors of each phase from the grounded metal enclosure. The insulating gas shall &e pressuri<ed higher than atmospheric pressure. Solid insulators shall &e non-hygroscopic, epoBy cast resin, free from %oids and contaminants. The contour of the insulators shall &e such that a uniform %oltage gradient is produced o%er the entire surface. EpoBy cast resin &ushing-type insulators shall &e pro%ided at the intersections &et een compartments. The &ushing-type insulators ill support the li%e conductors and ! here necessary$ pro%ide a gas-tight &arrier &et een compartments. The design of the &ushing-type insulator shall &e such that it is possi&le to inspect, maintain, or pressuri<e each gas section indi%idually ithout interfering ith ad8acent gas sections. "as 5onitoring: The gas compartment shall &e pro%ided ith a pressure indicator. 3ry contacts pro%ided on the indicator shall change state if the pressure falls &elo preset limits. A separate gas monitoring system is required for each of the follo ing: [Project Name] [26 13 13] [16341]-4
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Each main &us&ar phase !phase A, 7, and C$ Each set of &us&ar +oltage Transformer !+Ts$. !/-phase +T compartments shall &e monitored together.$ Each circuit &rea'er !/-phase interrupter compartments monitored together$
[4utdoor 5alk)in 'ingle #isle+ This design shall consist o& indoor t (e switchgear located in a weather(roo& steel housing having an o(erating aisle s(ace o& su&&icient si6e to (ermit circuit breaker ins(ection7 test and maintenance+ -ncluded shall be the &ollowing, 1. 4utdoor enclosure, Painted steel weather(roo& construction8 integral structural) steel base &rame with &actor )a((lied as(halt undercoating8 and e*ui((ed with the &ollowing &eatures, a. 'tructural design and anchorage ade*uate to resist loads im(osed b 121) m(h wind+ &. #de*uate 9luorescent aisle lights with low)tem(erature ballasts7 controlled b a three)wa wall switch at each access door+ c. :ouvers e*ui((ed with insect$rodent screen and &ilter and arranged to (ermit air circulation while e;cluding e;terior dust and rodents+ d. #isle access doors at each end with outside (adlocking (rovisions and interior (anic latches+ e. Two du(le; rece(tacles with integral ground &ault (rotection7 one at each aisle access door+ f. [#isle heaters and e;haust &ans thermostaticall controlled as re*uired+] g. [Thermall insulated walls &or better heating and cooling (er&ormance+] h. [<=#> unit+] i. [If !" #$% &!'"() %# f*+#! ,-+. "/0 [?ear doors are re*uired+]] +AC445 C#1C4#T 71EAGE1 The circuit &rea'ers shall &e %acuum type. "as, oil or air &last circuit &rea'ers ill not &e accepted. The circuit &rea'er shall &e designed to ithstand impacts and %i&rations under rated and short-circuit current conditions. The %acuum interrupters shall &e made from a metal alloy that ill ithstand high s itching duties and shall include ceramic insulators securely fused to the end fittings. The mo%ing contact acti%ating rod shall &e carried on &ello s, protected from the sputtering of molten metal during s itching operation &y a shield. The terminals of the %acuum interrupters shall &e supported using epoBy cast resin supports or &ushings. Each circuit &rea'er shall &e pro%ided ith a suita&le mechanically operated indicating de%ice, mar'ed OPE6 and C2OSE3 in ording or sym&ols. The indicating de%ice shall &e %isi&le at all times from the front of the panel. Circuit &rea'er operating mechanisms shall &e of the motor charged, stored energy type and equipped ith a SP1#6" CCA1"E3 indicator. Circuit &rea'er mechanisms shall &e trip free and designed for operation from a control po er source rated [4!=">] [121=">] [212=">] The circuit &rea'ers shall &e rated in accordance ith A6S# C/).=* and #EC *==.* !*--)1-1==$ and shall ha%e the ratings specified in section -.=-.7 of this specification. The rated operating sequence !3uty Cycle$ shall &e O-1. sec-CO or =-=./ sec-CO-/ min-CO per A6S# C/).=( and related #EC standards. The circuit &rea'er short time rating shall &e / seconds per A6S# C/).=( and related #EC standards. The circuit &rea'ers shall &e designed to ithstand the T1+ !Transient 1eco%ery +oltage$ pea's hich occur during the &rea'ing of small inducti%e currents normally encountered in a high %oltage system. The %acuum circuit &rea'ers shall not produce eBcessi%e o%er%oltage as a result of current chopping. The design shall incorporate means to reduce the current chopping %alue to less than .A. The circuit &rea'er operating mechanism shall &e located in a separate ca&inet at the front of the circuit &rea'er sections, allo ing access from the front of the s itchgear hile the primary equipment is in ser%ice at any time. The operating mechanism shall &e designed for high speed opening and closing of the circuit &rea'er under all operating conditions. All mechanical parts shall &e adequately si<ed to ensure consistent operation of the mechanism hen su&8ected to [Project Name] [26 13 13] [16341]-1
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forces due to specified short circuit currents. The maBimum difference in opening time &et een the three poles shall not &e more than - milliseconds. #t shall &e possi&le to lu&ricate and ser%ice the mo%ing or auBiliary parts of the mechanism &y remo%ing the front co%er plate. 3. Closing shall &e accomplished &y means of a motor charged, spring operated, stored-energy type mechanism, ith electrical release. #t shall not &e possi&le for the circuit &rea'er to close unless the closing spring is fully charged. A %isual, mechanical indicating de%ice shall &e pro%ided to indicate the status of the stored-energy closing spring. The indicator shall sho CCA1"E3 hen the mechanism is fully charged !ready to close the circuit &rea'er$ and 3#SCCA1"E3 hen it is in any other condition. Pro%isions for manually charging the closing spring shall &e pro%ided. Tripping of the circuit &rea'er shall &e &y means of a spring, hich is automatically charged hen the circuit &rea'er is closed. The mechanism shall &e pro%ided ith a shunt release and the necessary auBiliary s itches. An operations counter shall &e fitted to the mechanism and designed to indicate the total num&er of opening operations. The operating mechanism shall &e pro%ided ith the follo ing control and interloc'ing features: 1. 2ocal manual close and trip, prefera&ly &y mechanical push &uttons shrouded to pre%ent inad%ertent operation. -. The operating mechanism shall automatically recharge the closing spring after the completion of a closing operation /. A control po er cutoff s itch for disconnection of the control po er. (. 2ocal electrical close and trip at the circuit &rea'er. .. 2ocal-remote selector s itch at the circuit &rea'er ith pro%isions for connection to Purchaser9s super%isory control system. *. Operation Counter 3#SCO66ECT#6" A63 "1O463#6" S;#TCC A. 7. To isolate the circuit &rea'er and feeder from the system, a /-phase, /-position !Connected I Open - 1eady-to-"round$ s itch shall &e utili<ed. The /-position s itches shall &e located in each phase of the &us compartment such that hen in the disconnected or grounded position, no li%e parts are accessi&le in the interrupter compartment hen the main &us is energi<ed. Access to the /-position s itch operating mechanism shall &e mechanically and electrically &loc'ed hen the circuit &rea'er is in the closed position to pre%ent misoperation. #t shall not &e possi&le to s itch directly from connected to grounded position. A 'eyed selector shall prohi&it simultaneous access to manual disconnect and grounding s itch operators. The grounding position shall allo for safely grounding the feeder circuit &y closing of the circuit &rea'er. The ratings of the /-position s itch shall &e coordinated ith the system ratings. 5eans shall &e pro%ided to allo for %isual confirmation of the s itch position from the front of the s itchgear using a porta&le computer. The s itch positions shall &e clearly %isi&le. #f %ie indo s are furnished, they shall &e lit and accessi&le ithout opening any access doors. This pro%ision shall &e a%aila&le for use ith the s itchgear energi<ed. All operations shall &e performed ithout requiring the opening of any doors. The manually operated mechanism for the /-position s itch shall require one !1$ operating handle for changing the s itch position from connected to disconnected. A different handle shall &e required for changing the s itch position from disconnected to ready-to-ground position. A mechanism operated position indicator shall &e located on the front of the s itchgear panel and indicate Connected I Open - 1eady-to-"round. Additionally, a flag type mechanical indicator shall &e %isi&le from the rear of the s itchgear. This flag indicator shall &e elded to the main shaft of the s itch operator !&olted construction is not accepta&le$. The operating mechanism shall &e pro%ided ith the follo ing control features: 1. 2ocal, manual operation of the /-position s itch, utili<ing t o separate operating handles, pro%ided as accessories.
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#f an electrically operated mechanism is pro%ided, manual operation shall &loc' electrical operation. The operating mechanism shall allo local and remote electrical operation of the disconnect s itch ith automatic cutoff hen s itch has reached complete tra%el &et een positions. AuBiliary s itches as required for interloc'ing and remote indication. The position of the s itches shall ha%e a means of %isual %erification according to 6EC. The use of permanently installed micro cameras and a laptop computer shall &e accepta&le.
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;here t o s itching de%ices !i.e., circuit &rea'er and /-position s itch$ require interloc'ing, the interloc's shall &e designed to prohi&it simultaneous operation of the de%ices. The interloc' system shall pre%ent either de%ice from &eing &loc'ed in an intermediate or undefined position. The system shall operate effecti%ely for either electrical s itching commands or manual. C411E6T T1A6S0O15E1S Current Transformers utili<ed ith the "#S shall &e lo %oltage, torroidal type, free from dielectric stressed cast-resin components and shall &e located outside the gas-tight enclosure. Each main circuit &rea'er shall ha%e one set of CTs, [1222,1#] ['(eci& ratio re*uired]. Each feeder circuit &rea'er shall ha%e one set of CTs, [1222,1#] ['(eci& ratio re*uired]. Each tie circuit &rea'er shall ha%e one set of CTs, [1222,1#] ['(eci& ratio re*uired]. All current transformers shall &e installed around the cast aluminum phase housings or around the feeder ca&les so that the CT is free of dielectric and thermal stress. CT9s shall &e located on the ca&le termination side of the circuit &rea'er. Current transformers shall &e single !S1$ as sho n on the dra ings and shall ha%e a shortcircuit ratings not less than that of the associated s itchgear. They shall &e capa&le of carrying the rated primary current for a period of one minute ith the secondary indings open-circuited as specified in #EEE C.).1/ or related #EC *==((-1 standards. 2o po er signal CTs shall also &e accepta&le. +O2TA"E T1A6S0O15E1S +oltage transformer ratings and locations shall &e as indicated on the dra ings. They shall comply ith the requirements of this section. +oltage transformers shall &e according to #EEE C.).1/ or related #EC *==((-- Standards. 7us&ar +oltage Transformers Single-phase, inducti%e %oltage transformers shall &e housed in indi%idual S0* gas filled compartments and mounted on the top of the appropriate &us&ar phase enclosure. Each &us&ar %oltage transformer shall &e primary fused !current limiting type$ to prohi&it the possi&ility of transfer of a &us&ar %oltage transformer failure to the corresponding &us&ar. The current limiting-fuses shall &e located in an S0* gas insulated housing. The &us&ar %oltage transformers shall &e equipped ith a /-position s itch !Connected I Open - 1eady-to-"round$ to allo for maintenance on the &us&ar %oltage transformer or fuses ithout de-energi<ing the s itchgear. The &us&ar %oltage transformer and fuse housings for each phase shall &e connected &y a piping system, resulting in an indi%idual gas-compartment and monitoring system for each &us&ar %oltage transformer?fuse set. The pressure shall &e monitored &y means of an indicator on the front of the s itchgear. 0or e%acuating and gas filling the &us&ar %oltage transformer, fuse system or replacement of a manometer !pressure gauge$, a separate %al%e ith identification la&el shall &e pro%ided. Each single phase &us&ar %oltage transformer?fuse enclosure shall &e pro%ided pressure relief de%ice. ith its o n
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All secondary leads for %oltage transformers shall &e located in a corresponding lo %oltage compartment.
ired to a molded case circuit &rea'er,
2o po er signal %oltage transformers are also accepta&le. #f furnished, primary current limiting fuses and disconnect s itches for the %oltage transformers are not required. CA72E TE15#6AT#O6S The design of the ca&le terminations !inclusi%e of its accessories$ shall meet the design o&8ecti%es of the gas-insulated s itchgear, including electrical ratings, loss of S0 * gas, Jsafe-totouchK, etc. Ca&le termination system shall &e JCO66ELK plug-in ca&le termination system or appro%ed equal. The design of the complete ca&le termination !inclusi%e of its accessories$ shall &e suita&le for the s itchgear short circuit current and 7#2 as specified. The num&er of ca&les, si<e and type for each incoming and outgoing feeder shall &e sho n on the dra ings or pro%ided as an AppendiB to this specification. Each termination 'it shall include suita&le tinned copper &raid for connection of the ca&le ground shield. A copper lug shall &e crimped at one end of each grounding &raid. A suita&le shipping co%er shall &e pro%ided and fitted securely at each ca&le termination point in the s itchgear. These co%ers should only &e remo%ed 8ust prior to field termination of ca&les. Ca&le preparation and assem&ly of termination tool 'its shall &e the responsi&ility of the purchaser or the purchaser9s installing contractor. 5ETE1#6" A63 1E2AA#6" 5ultifunction 3igital-5etering 5onitors shall &e 42-listed or -recogni<ed, microprocessor-&ased unit suita&le for three- or four- ire systems. 5ultifunction Protecti%e 1elaying: 5icroprocessor-&ased /-phase relays shall &e 42 listed or 42 recogni<ed. Protecti%e relays shall &e pro%ided as follo s: 1. 5ain 7rea'ers a. The relays shall &e Siemens )SF*/ or equi%alent. The relays shall include the follo ing protection functions: .=?.1, .=6?.16, -), (*, (), .>, ,1O?4. &. The relay shall pro%ide trip circuit super%ision of the main &rea'er and alarm on circuit failure. c. The relay shall pro%ide monitoring of the CT and +T circuits and alarm on circuit failure. d. The relay shall pro%ide demand alarms, %ar alarms and po er factor alarms. e. The relay shall pro%ide complete metering including amps, %olts, atts, %ars, ';h, po er factor, frequency, ith demand and min?maB information for each quantity. f. The relays shall pro%ide a graphic mimic display %isually indicating the position of the &rea'er, protection function trip and metering data. g. The relay shall pro%ide four programma&le function 'eys to replace toggle s itches. The relays shall pro%ide 1( programma&le 2E3s. h. The relays shall &e capa&le of internally performing main-tie-main auto-transfer and auto-restore functions. i. The relays shall ha%e programma&le logic capa&ilities to permit use in protection and control systems. Programming soft are must &e compliant ith #EC 11/1 standard for P2C programming. 8. The relays shall ha%e a modular communications processor set to 5od&us 1T4 protocol. The relay must ha%e 1S-(,. communications. '. The relays shall pro%ide #1#"-7 time synchroni<ation for sequence-of-e%ents recording time stamping consistent ith supplying utility standards. l. The relays shall pro%ide complete sequence-of-e%ents recording, time stamped e%ery millisecond. The relays shall pro%ide oscillography capture, ith configura&le pre- and post-fault data capture times. m. Automatic Transfer Scheme: 1.$ The 5ain 7rea'er protection relay controller shall &e factory programmed to operate a three &rea'er transfer scheme as indicated on the dra ings [Project Name] [26 13 13] [16341]-4
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accomplished through the logic program capa&ility and digital input and output capa&ility of the protection relay?&ay controller. -.$ The 5ain 7rea'er relay?&ay controllers shall control and monitor the position of the t o main circuit &rea'ers and the tie &rea'er as defined on the dra ings. The status of each circuit &rea'er shall &e monitored from each main &rea'er. /.$ ;hen the %oltage and?or frequency protection reaches the transfer setting and maintains that %alue for the programmed delay period, the automatic transfer sequence shall &e initiated. (.$ The transfer shall not occur unless the source to recei%e the load has %oltage and frequency ithin the specified ranges and is not in o%ercurrent pic'up. ..$ Phase rotation shall &e determined &y the relays and shall match &et een sources prior to transfer. *.$ All time delays range and incremental ad8ustment shall &e programma&le %ia soft are. Settings shall &e ad8usta&le at the 2C3 display and 'eypad or %ia soft are of the normal po er supply relay. ).$ An eBternal three-position momentary-type test s itch shall &e pro%ided for the test-automatic-reset modes. The test mode shall simulate one source failure. The reset position shall &ypass the time delays on either the initial transfer to or retransfer to normal. ,.$ 2E3 indicating lights on the front of &oth the normal po er main circuit &rea'er relays shall &e set and la&eled as follo s: a.$ 7rea'er closed. &.$ Alternate source &rea'er closed. c.$ 6ormal source a%aila&le. d.$ Alternate source a%aila&le. e.$ Trip f.$ Pic'up g.$ 2ocal Control h.$ Automatic Control >.$ One of the function 'eys on the front of the relay?&ay controller for each main &rea'er shall &e la&eled 5etering. The factor default metering display shall &e displayed on the 2C3 screen &y pressing the 5etering function 'ey. The screen shall display +oltage per phase, Current per phase, Po er functions including ;atts, +ars and +A, Po er factor and 0requency. 0eeder Protection I Transformer Protection a. The transformer differential protection relay shall &e a Siemens )4T*1- or equi%alent. The relay shall pro%ide the follo ing protection functions: ,), ,)CS and (>. &. The transformer differential relay shall ha%e a through-fault restraint setting to pre%ent tripping due to high current eBternal faults. c. The transformer o%ercurrent relay shall &e a Siemens )SF*=- or equi%alent. The relay shall pro%ide the follo ing protection functions: .=?.1, .=6?.16, -*. The relay shall ha%e three analog CT inputs for phase protection and a separate analog CT input for o%ercurrent protection. d. The relays shall pro%ide trip circuit super%ision of the feeder &rea'er and alarm on trip circuit failure. e. The relays shall ha%e a modular communications processor to permit field change &et een 5od&us 1T4, Profi&us-3P and #EC*=,)=-.-1=/ protocols. The relay must &e a&le support either 1S-(,. or fi&er optic communications. f. The relays shall pro%ide complete sequence-of-e%ents recording, time stamped e%ery millisecond. The relays shall pro%ide oscillography capture, ith configura&le pre- and post-fault data capture times. g. The relays shall &e capa&le of sending close or trip signal to the circuit &rea'ers.
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[Project Name] [26 13 13] [16341]-5
-.1= A.
["> %#TT.?@ '@'T./ "> control (ower shall be (rovided b [the switchgear manu&acturer] [AAA >om(an ]+ The 4! ="> batter s stem shall be mounted e;ternal &rom the switchgear+ The batter s stem should be si6ed to carr the switchgear continuous load &or ! hours a&ter loss o& charger out(ut and in addition7 shall be ca(able o& o(erating all control com(onents and switch o(erations twice at the end o& the (eriod+ 9or (ur(oses o& this re*uirement7 a ma;imum o& all o& the medium voltage electricall o(erated load interru(ter switches will be o(erated simultaneousl + 1. %atter , :ead)calcium t (e in sealed7 clear (lastic or glass containers7 com(lete with electrol te7 &ull charged and arranged &or shi(ment with electrol te in cells+ .ach container weighs not more than 02 lb B32 kgC and contains not more than three cells+ %atteries are suitable &or service at an ambient tem(erature ranging &rom )1! to D21 deg >+ -. ?ack, Provide a two)ste( rack that &its available s(ace indicated+ %atteries are (rovided with necessar electrical connections between cells and between rows o& cells and include two ≤ible connectors with bolted)t (e terminals &or out(ut leads+ /. #ccessories, -nclude the &ollowing, a. Thermometers with s(eci&ic)gravit correction scales+ &. < drometer s ringes+ c. 'et o& socket wrenches and other tools re*uired &or batter maintenance+ d. 5all)mounted7 nonmetallic storage rack &itted to store above items+ e. 'et o& cell numerals+ (. >harger, 'tatic)t (e silicon recti&ier e*ui((ed with automatic regulation and (rovision &or manual and automatic adjustment o& the charging rate+ Enit automaticall maintains out(ut voltage within 2+1 (ercent &rom no load to rated charger out(ut current7 with ac in(ut)voltage variation o& (lus or minus 12 (ercent and in(ut)&re*uenc variation o& (lus or minus 3 <6+ 4ther &eatures o& charger include the &ollowing, a. "> #mmeter+ &. "> =oltmeter, /a;imum error o& 1 (ercent at &ull)charge voltage8 o(erates with toggle switch to select between batter and charger voltages+ c. Fround -ndication, Two a((ro(riatel labeled lights to indicate circuit ground7 connected in series between negative and (ositive terminals7 with mid(oint junction connected to ground b normall o(en (ushbutton contact+ d. >a(acit , 'u&&icient to su((l stead load7 &loat)charge batter between 2+22 and 2+21 = (er cell and e*uali6ing charge at 2+33 = (er cell+ e. >harging)?ate 'witch, /anuall o(erated switch (rovides &or trans&erring to higher charging rate+ >harger o(erates automaticall a&ter switch o(eration until manuall reset+ f. #> (ower su((l is 122 =7 62 <67 subject to (lus or minus 12 (ercent variation in voltage and (lus or minus 3)<6 variation in &re*uenc + #&ter loss o& ac (ower su((l &or an interval7 charger automaticall resumes charging batter + >harger regulates rate o& charge to (revent damage due to overload and to (revent &uses or circuit breakers &rom o(ening+ g. Protective 9eature, >urrent)limiting device or circuit7 which limits out(ut current to rating o& charger but does not disconnect charger &rom either batter or ac su((l 8 to (rotect charger &rom damage due to overload7 including short circuit on out(ut terminals+ h. .lectrical 9iltering, ?educe charger audible noise to less than 26 d%+] CO6T1O2 ;#1#6" 0actory installed, complete ith the follo ing: ith &undling, lacing and protection here necessary and complying
-.11 A.
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[Project Name] [26 13 13] [16341]-16
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0leBi&le conductors of 6o. 1( A;" for ires across hinges, control and CT and +T circuits and for interconnections &et een shipping units. Conductors si<ed according to 6EC?60PA )=, 6ational Electrical Code for the duty required.
ACCESSO1#ES Ca&le testing soc'et: / !three$ ca&le testing soc'ets suita&le for %erification of %oltage present. Operation tools: Set of operation tools shall &e pro%ided such as one operation handle for the disconnect s itch, one operation handle for grounding s itch, one charging handle for circuit &rea'er, t o selector 'eys, touch-up paint and grease pac's. +ideo 5onitor: One %ideo monitor !laptop computer$ shall &e pro%ided for %erification of /position s itch. #3E6T#0#CAT#O6 Storage for 5anual: #nclude a rac' or holder for the s itchgear instruction manual and the s itchgear arrangement dra ing.
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PART 3 - E7ECUTION
/.1 A. /.A. #6STA22AT#O6 "eneral: Electrical contractor or s itchgear installer shall install s itchgear in accordance manufacturer9s ritten instructions and the follo ing specifications. A3F4ST5E6TS A63 C2EA6#6" Protecti%e-1elay Settings: +erify that settings sho n on 3ra ings are appropriate for final system configuration and parameters. ;here discrepancies are found, recommend final relay settings for appro%al &efore ma'ing final ad8ustments. #nspect interior and eBterior of installed s itchgear. 1emo%e paint splatters and other spots, dirt and de&ris. Touch up scratches and mars of finish to match original finish. TEST#6" A. The s itchgear furnished under this specification shall &e fully tested and documented &y certified production test reports, in accordance ith A6S# C/).-=.- !clause *./$ and #EC *=->, !*--)1--==$ !Clause )$. As a minimum, the follo ing production tests shall &e conducted for the medium %oltage portion of the s itchgear, in accordance ith #EC *=->, !*--)1--==$: 1. Po er-frequency %oltage !high-pot$ test 1 min. -. 3ielectric test of auBiliary circuit ith - '+. /. 5easurement of the resistance of the main circuit. (. Partial discharge test .. 5echanical operation test *. Pressure test of gas-filled compartments ). "as tightness test of gas-filled compartments ,. Test of auBiliary de%ices >. +erification of the correct iring 1=. 5easurement of gas condition after filling. 11. Lray of &ushings ;A11A6TA A. Equipment manufacturer arrants that all goods supplied are free of non-conformities in or'manship and materials for one year from date of initial operation, &ut not more than eighteen months from date of shipment. ith
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[Project Name] [26 13 13] [16341]-11
/.. A. 7. C. 3.
["./4N'T?#T-4N 'witchgear /anu&acturer shall (rovide a &actor )authori6ed service re(resentative &or a (eriod o& B3C da s to train 4wnerGs maintenance (ersonnel in the &ollowing, -n (rocedures and schedules related to startu( and shutdown7 troubleshooting7 servicing and (reventive maintenance+ ?eview data in the maintenance manuals+ 'chedule training with 4wner with at least three weeks advance notice+ ]
END O8 SECTION
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[Project Name] [26 13 13] [16341]-12
1.1 A. SCOPE This specification defines the technical requirements for indoor or outdoor type, gas-insulated s itchgear !"#S$, equipped ith %acuum circuit &rea'ers rated (.)*'+, ,.-.'+, 1.'+, -).*'+, or /,'+. This specification co%ers the design, manufacture, factory production testing and field ser%ice assistance during installation and commissioning of S0 * gas insulated %acuum circuit &rea'er s itchgear and associated equipment. 1E2ATE3 3OC45E6TS A. 1./ A. 3ra ings and general pro%isions of the Contract, including "eneral and Supplementary Conditions and 3i%ision 1 Specification Sections, apply to this Section. S475#TTA2S Su&mit shop dra ings and product data for appro%al and final documentation in the quantities listed in the data sheet. All transmittals shall &e identified &y purchaser name, pro8ect location and purchaser9s order num&er. 3ocuments for Appro%al: 1. "eneral arrangement dra ing sho ing dimensioned ele%ation and floor plan, side %ie s, foundation details and one-line diagram -. Panel arrangement dra ing sho ing layout of de%ices on the panel doors /. Three line diagrams (. Schematics .. 6ameplate engra%ing dra ings *. 7ill of material 0inal 3ocuments: 1ecord documentation to include: 1. 3ocuments listed a&o%e in 1./.7 -. ;iring diagrams /. 1ecommended spare parts list for start-up support (. #nstruction manual Product 3ata: #nclude features, characteristics and ratings of indi%idual circuit &rea'ers and other components. Pro%ide time-current characteristic cur%es for o%ercurrent protecti%e de%ices on request. Shop 3ra ings: 3etail equipment assem&lies and indicate dimensions, eights, required clearances, method of field assem&ly, components and location and si<e of each field connection. #nclude the follo ing: 1. 6ameplate legends. -. 7us configuration ith si<e and num&er of conductors in each &us run, including phase and ground conductors of main and &ranch &uses. /. Current ratings of &uses. (. Short-time and short-circuit ratings of s itchgear assem&ly. .. ;iring 3iagrams: 3etail iring for po er, signal and control systems including differentiation &et een manufacturer-installed and field-installed iring. 1E2ATE3 STA63A13S A. Comply ith requirements of latest re%isions of applica&le industry standards, specifically including the follo ing: 1. "#S S itchgear: [Project Name] [26 13 13] [16341]-1
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a. #EC *=->, !*--)1--==$ &. #EC *=*>( !*--)1-1$ c. #EC *==((-) d. #EC *==((-, e. A6S# C/).-=.- !;here Applica&le$ f. A6S# C/)... !;here Applica&le$ g. 42 listed Circuit 7rea'ers: a. #EC .* !*--)1-1==$ &. A6S# C/).=( c. A6S# C/).=> d. A6S# C/).=* e. A6S# C/).=1= f. A6S# C/)..( ! here applica&le$ Current Transformers a. #EEE C.).1/ &. #EC *==((-1 c. #EC *==((-) +oltage Transformers a. A6S# C.).1/ &. #EC *==((-c. #EC *==((-, 3isconnect, isolation and /-position s itches: a. #EC *=1-> !*--)1-1=-$ &. A6S#?60PA )= !6EC$
1.. A.
@4A2#TA ASS41A6CE 5anufacturer @ualifications: Engage a firm ith at least 1. years eBperience in manufacturing medium %oltage gas insulated %acuum circuit &rea'er s itchgear. The manufacturer of the s itchgear assem&ly shall also manufacture the medium %oltage circuit &rea'ers. 3E2#+E1A, STO1A"E A63 CA632#6" A. 7. C. 3eli%er in con%enient shipping groups. Shipping groups shall not eBceed , ft. in length. Circuit &rea'ers shall &e shipped inside their respecti%e cells. Outdoor al'-in single aisle s itchgear shall &e shipped fully assem&led eBcept for necessary shipping splits for transportation and handling.
1.*
PART 2 - PRODUCTS
-.1 A. 5A640ACT41E1S [The medium voltage gas insulated vacuum circuit breaker switchgear assembl shall be !"#$"% manu&actured b 'iemens or (re)a((roved e*ual+ #((roved manu&acturers are as &ollows, 1. '-./.N' -. + ] 1AT#6"S A. 7. System Configuration: S itchgear shall &e suita&le for application in three-phase, *=-C<, grounded-neutral system. Electrical 1atings: 1. 6ominal System +oltage, '+: [4+16] [0+2] [12+40] [13+2] [13+!] [22] [26] [34+1] -. 5aBimum 3esign +oltage, '+: [4+06] [!+21] [11] [20] [3!] /. 1ated 5ain 7us Current, A: [1222] [2222] [2122] [4222D [Project Name] [26 13 13] [16341]-2
-.-
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(. .. *. ). ,. >. 1=. -./ A.
1ated #nterrupting !Short-Circuit$ Current, 'A Symmetrical: [21] [31+1] [42] 1ated Short-Time Current, 'A !/ Second$: [21] [31+1] [42] 1ated Po er-0requency ;ithstand +oltage, '+ !1 5inute$: [13] [36] [62] [!2] 1ated #mpulse ;ithstand +oltage, '+ 7#2: [62] [31] [121] [112] [102] [222] Continuous Current 1ating of the 5ain 7rea'er: [ ] amperes Continuous Current 1ating of the Tie 7rea'er: [ ] amperes Continuous Current 1ating of the 0eeder 7rea'er: [ ] amperes
"E6E1A2 1E@4#1E5E6TS The medium %oltage, gas-insulated %acuum circuit &rea'er s itchgear shall &e metal-clad as defined in #EC *=*>( and shall meet A6S#?#EEE C/).-=.- eBcept for differences related to fiBed circuit &rea'er construction and isolated-phase &us arrangement. All components of the s itchgear !i.e., circuit &rea'ers, &us&ar, disconnect s itches, grounding s itches, +T9s etc.$ shall &e in grounded metal enclosures. The construction shall ithstand forces !repeatedly, ithout distortion$ caused &y closing and opening of the circuit &rea'er. The s itchgear shall &e capa&le of ithstanding all stresses produced &y fault conditions up to and including the rated short-circuit current specified in -.-.7 ithout damage. Each current carrying component of the equipment shall &e capa&le of continuous operation at the specified ratings ithout eBceeding the maBimum temperature rise stated in the A6S# and #EC standards. The s itchgear lineup shall &e designed and manufactured ith pro%ision for future eBpansion on each end. ;hen eBtending either end of the s itchgear, it shall only &e necessary to e%acuate the S0* gas compartment and remo%e end panels for the associated &us&ars. 6o other gas compartments or components shall &e affected. The enclosures housing the primary !medium %oltage$ components shall &e constructed of gastight cast aluminum. 0errous metal components shall &e finished ith electrostatically applied paint finish in manufacturer9s standard light gray color. 5echanism parts not suita&le for painting shall &e plated for corrosion resistance. The medium %oltage enclosure shall &e factory assem&led and modular in design. 5edium %oltage components shall &e in cast aluminum, hermetically sealed, single pole !phase$ enclosures to eliminate the possi&ility of phase to phase faults in the s itchgear. The medium %oltage enclosure shall &e pressuri<ed ith S0 * gas to isolate energi<ed components from en%ironmental influences, thus allo ing long inter%als &et een maintenance. 5inor maintenance of the primary components shall &e required at 1=-year inter%als and ma8or maintenance at -=-year inter%als. The s itchgear shall &e designed so that normal ser%ice, inspection, maintenance, grounding of high %oltage ca&les and elimination of electrostatic charges can &e carried out safely ith ad8acent sections energi<ed. A continuous ground &us shall run the length of a s itchgear group for relia&le grounding. Each feeder section housing shall &e connected to the s itchgear ground &us. Conductors and connectors for the &us&ars shall &e copper, designed to carry rated continuous current at (=EC am&ient temperature and shall ithstand the rated short-circuit current specified in -.-.7. The surfaces of the conductors shall ha%e a smooth finish to pre%ent any electrical discharges. 3isconnect and ground s itch contacts shall &e sil%er-plated to pro%ide high conducti%ity and shall match the rating of the associated &us&ar or circuit &rea'er. The connection points &et een &us&ars and?or components shall &e easily accessi&le to allo assem&ly and testing to &e accomplished ithout ma8or disassem&ly or loss of gas pressure in ad8acent compartments. The front of each s itchgear section shall consist of four !($ separate compartments for the follo ing main components: 1. Protecti%e relays and controls located in the top compartment. Terminal &loc's, CT connections, +T connection and miscellaneous control de%ices shall also &e located in [Project Name] [26 13 13] [16341]-3
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this compartment. Connection terminal &loc's for purchaser9s eBternal connections ill &e located in this compartment. Operation of the s itchgear shall not &e affected &y opening any of the lo %oltage compartment doors. Three-position s itch operating mechanism ith all ser%icea&le items accessi&le from the front. Circuit &rea'er operating mechanism ith all ser%icea&le items accessi&le from the front. The lo er compartment shall &e a%aila&le for additional mounting of lo %oltage components or eBternal connection, if required.
Each section shall ha%e a mimic diagram of sufficient si<e and color contrast to &e plainly %isi&le to an operator. 5imic diagrams shall sho circuit &rea'ers, disconnect s itches, grounding s itches and &us&ar connections. 7us&ar +Ts or &us&ar ca&le connections should also &e sho n. The mimic diagram shall &e on the front of each section, in con8unction ith the mechanical position indicators. S0* gas compartment: Each feeder gas compartment shall &e suita&ly di%ided into separate sections, hich are isolated &y gas-tight &ushings. The di%ision of compartments shall ta'e into account the effects of faults ithin the compartments such that in the e%ent of an internal fault, a pressure relief de%ice operates &efore internal pressure eBceeds the design limit of the compartment. The indi%idual gas-sealed compartments shall &e capa&le of &eing separately e%acuated for inspection or maintenance, hile 'eeping the ad8acent compartments pressuri<ed to rated pressure. 2ea'age of gas from the s itchgear enclosures shall not eBceed =..H of the gas per compartment per year. S itchgear feeders shall &e compartmentali<ed in single-phase, isolated-phase, construction, ith: 1. A minimum of four !($ gas compartments per standard feeder ithout optional equipment. -. #f &us&ar +oltage Transformers are specified, these shall &e installed in separate gas housings, isolated from the main &us&ar &y gas-tight &ushings ith their o n gas monitoring and pressure relief system. #t shall &e furnished ith an isolation s itch and primary fuses. The gas compartments shall &e pro%ided ith ring type seals at intersections &et een compartments and at positions here sliding or rotating shafts enter a compartment. The seals shall &e capa&le of ithstanding the gas pressure of the compartments under all ser%ice conditions. Seals shall &e O-1ing type. Pressure 1elief 3e%ices: Each gas compartment shall &e pro%ided ith a pressure relief de%ice to limit the pressure to a safe le%el in the e%ent of an internal fault. 3esigns ithout pressure relief are not accepta&le. The pressure relief de%ices shall &e designed such that discharges resulting from internal faults are directed a ay from locations here personnel may &e present. The preferred location for the &us&ar pressure relief shall &e such that gases are eBhausted through the top of the enclosures. All pressure relief de%ice designs shall &e certified &y an arc fault design test in accordance ith #EC *=->, standards. #nsulation: Sulfur CeBafluoride !S0*$ gas and epoBy cast resin insulating materials shall &e employed for the insulation of primary conductors of each phase from the grounded metal enclosure. The insulating gas shall &e pressuri<ed higher than atmospheric pressure. Solid insulators shall &e non-hygroscopic, epoBy cast resin, free from %oids and contaminants. The contour of the insulators shall &e such that a uniform %oltage gradient is produced o%er the entire surface. EpoBy cast resin &ushing-type insulators shall &e pro%ided at the intersections &et een compartments. The &ushing-type insulators ill support the li%e conductors and ! here necessary$ pro%ide a gas-tight &arrier &et een compartments. The design of the &ushing-type insulator shall &e such that it is possi&le to inspect, maintain, or pressuri<e each gas section indi%idually ithout interfering ith ad8acent gas sections. "as 5onitoring: The gas compartment shall &e pro%ided ith a pressure indicator. 3ry contacts pro%ided on the indicator shall change state if the pressure falls &elo preset limits. A separate gas monitoring system is required for each of the follo ing: [Project Name] [26 13 13] [16341]-4
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Each main &us&ar phase !phase A, 7, and C$ Each set of &us&ar +oltage Transformer !+Ts$. !/-phase +T compartments shall &e monitored together.$ Each circuit &rea'er !/-phase interrupter compartments monitored together$
[4utdoor 5alk)in 'ingle #isle+ This design shall consist o& indoor t (e switchgear located in a weather(roo& steel housing having an o(erating aisle s(ace o& su&&icient si6e to (ermit circuit breaker ins(ection7 test and maintenance+ -ncluded shall be the &ollowing, 1. 4utdoor enclosure, Painted steel weather(roo& construction8 integral structural) steel base &rame with &actor )a((lied as(halt undercoating8 and e*ui((ed with the &ollowing &eatures, a. 'tructural design and anchorage ade*uate to resist loads im(osed b 121) m(h wind+ &. #de*uate 9luorescent aisle lights with low)tem(erature ballasts7 controlled b a three)wa wall switch at each access door+ c. :ouvers e*ui((ed with insect$rodent screen and &ilter and arranged to (ermit air circulation while e;cluding e;terior dust and rodents+ d. #isle access doors at each end with outside (adlocking (rovisions and interior (anic latches+ e. Two du(le; rece(tacles with integral ground &ault (rotection7 one at each aisle access door+ f. [#isle heaters and e;haust &ans thermostaticall controlled as re*uired+] g. [Thermall insulated walls &or better heating and cooling (er&ormance+] h. [<=#> unit+] i. [If !" #$% &!'"() %# f*+#! ,-+. "/0 [?ear doors are re*uired+]] +AC445 C#1C4#T 71EAGE1 The circuit &rea'ers shall &e %acuum type. "as, oil or air &last circuit &rea'ers ill not &e accepted. The circuit &rea'er shall &e designed to ithstand impacts and %i&rations under rated and short-circuit current conditions. The %acuum interrupters shall &e made from a metal alloy that ill ithstand high s itching duties and shall include ceramic insulators securely fused to the end fittings. The mo%ing contact acti%ating rod shall &e carried on &ello s, protected from the sputtering of molten metal during s itching operation &y a shield. The terminals of the %acuum interrupters shall &e supported using epoBy cast resin supports or &ushings. Each circuit &rea'er shall &e pro%ided ith a suita&le mechanically operated indicating de%ice, mar'ed OPE6 and C2OSE3 in ording or sym&ols. The indicating de%ice shall &e %isi&le at all times from the front of the panel. Circuit &rea'er operating mechanisms shall &e of the motor charged, stored energy type and equipped ith a SP1#6" CCA1"E3 indicator. Circuit &rea'er mechanisms shall &e trip free and designed for operation from a control po er source rated [4!=">] [121=">] [212=">] The circuit &rea'ers shall &e rated in accordance ith A6S# C/).=* and #EC *==.* !*--)1-1==$ and shall ha%e the ratings specified in section -.=-.7 of this specification. The rated operating sequence !3uty Cycle$ shall &e O-1. sec-CO or =-=./ sec-CO-/ min-CO per A6S# C/).=( and related #EC standards. The circuit &rea'er short time rating shall &e / seconds per A6S# C/).=( and related #EC standards. The circuit &rea'ers shall &e designed to ithstand the T1+ !Transient 1eco%ery +oltage$ pea's hich occur during the &rea'ing of small inducti%e currents normally encountered in a high %oltage system. The %acuum circuit &rea'ers shall not produce eBcessi%e o%er%oltage as a result of current chopping. The design shall incorporate means to reduce the current chopping %alue to less than .A. The circuit &rea'er operating mechanism shall &e located in a separate ca&inet at the front of the circuit &rea'er sections, allo ing access from the front of the s itchgear hile the primary equipment is in ser%ice at any time. The operating mechanism shall &e designed for high speed opening and closing of the circuit &rea'er under all operating conditions. All mechanical parts shall &e adequately si<ed to ensure consistent operation of the mechanism hen su&8ected to [Project Name] [26 13 13] [16341]-1
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forces due to specified short circuit currents. The maBimum difference in opening time &et een the three poles shall not &e more than - milliseconds. #t shall &e possi&le to lu&ricate and ser%ice the mo%ing or auBiliary parts of the mechanism &y remo%ing the front co%er plate. 3. Closing shall &e accomplished &y means of a motor charged, spring operated, stored-energy type mechanism, ith electrical release. #t shall not &e possi&le for the circuit &rea'er to close unless the closing spring is fully charged. A %isual, mechanical indicating de%ice shall &e pro%ided to indicate the status of the stored-energy closing spring. The indicator shall sho CCA1"E3 hen the mechanism is fully charged !ready to close the circuit &rea'er$ and 3#SCCA1"E3 hen it is in any other condition. Pro%isions for manually charging the closing spring shall &e pro%ided. Tripping of the circuit &rea'er shall &e &y means of a spring, hich is automatically charged hen the circuit &rea'er is closed. The mechanism shall &e pro%ided ith a shunt release and the necessary auBiliary s itches. An operations counter shall &e fitted to the mechanism and designed to indicate the total num&er of opening operations. The operating mechanism shall &e pro%ided ith the follo ing control and interloc'ing features: 1. 2ocal manual close and trip, prefera&ly &y mechanical push &uttons shrouded to pre%ent inad%ertent operation. -. The operating mechanism shall automatically recharge the closing spring after the completion of a closing operation /. A control po er cutoff s itch for disconnection of the control po er. (. 2ocal electrical close and trip at the circuit &rea'er. .. 2ocal-remote selector s itch at the circuit &rea'er ith pro%isions for connection to Purchaser9s super%isory control system. *. Operation Counter 3#SCO66ECT#6" A63 "1O463#6" S;#TCC A. 7. To isolate the circuit &rea'er and feeder from the system, a /-phase, /-position !Connected I Open - 1eady-to-"round$ s itch shall &e utili<ed. The /-position s itches shall &e located in each phase of the &us compartment such that hen in the disconnected or grounded position, no li%e parts are accessi&le in the interrupter compartment hen the main &us is energi<ed. Access to the /-position s itch operating mechanism shall &e mechanically and electrically &loc'ed hen the circuit &rea'er is in the closed position to pre%ent misoperation. #t shall not &e possi&le to s itch directly from connected to grounded position. A 'eyed selector shall prohi&it simultaneous access to manual disconnect and grounding s itch operators. The grounding position shall allo for safely grounding the feeder circuit &y closing of the circuit &rea'er. The ratings of the /-position s itch shall &e coordinated ith the system ratings. 5eans shall &e pro%ided to allo for %isual confirmation of the s itch position from the front of the s itchgear using a porta&le computer. The s itch positions shall &e clearly %isi&le. #f %ie indo s are furnished, they shall &e lit and accessi&le ithout opening any access doors. This pro%ision shall &e a%aila&le for use ith the s itchgear energi<ed. All operations shall &e performed ithout requiring the opening of any doors. The manually operated mechanism for the /-position s itch shall require one !1$ operating handle for changing the s itch position from connected to disconnected. A different handle shall &e required for changing the s itch position from disconnected to ready-to-ground position. A mechanism operated position indicator shall &e located on the front of the s itchgear panel and indicate Connected I Open - 1eady-to-"round. Additionally, a flag type mechanical indicator shall &e %isi&le from the rear of the s itchgear. This flag indicator shall &e elded to the main shaft of the s itch operator !&olted construction is not accepta&le$. The operating mechanism shall &e pro%ided ith the follo ing control features: 1. 2ocal, manual operation of the /-position s itch, utili<ing t o separate operating handles, pro%ided as accessories.
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[Project Name] [26 13 13] [16341]-2
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#f an electrically operated mechanism is pro%ided, manual operation shall &loc' electrical operation. The operating mechanism shall allo local and remote electrical operation of the disconnect s itch ith automatic cutoff hen s itch has reached complete tra%el &et een positions. AuBiliary s itches as required for interloc'ing and remote indication. The position of the s itches shall ha%e a means of %isual %erification according to 6EC. The use of permanently installed micro cameras and a laptop computer shall &e accepta&le.
0.
;here t o s itching de%ices !i.e., circuit &rea'er and /-position s itch$ require interloc'ing, the interloc's shall &e designed to prohi&it simultaneous operation of the de%ices. The interloc' system shall pre%ent either de%ice from &eing &loc'ed in an intermediate or undefined position. The system shall operate effecti%ely for either electrical s itching commands or manual. C411E6T T1A6S0O15E1S Current Transformers utili<ed ith the "#S shall &e lo %oltage, torroidal type, free from dielectric stressed cast-resin components and shall &e located outside the gas-tight enclosure. Each main circuit &rea'er shall ha%e one set of CTs, [1222,1#] ['(eci& ratio re*uired]. Each feeder circuit &rea'er shall ha%e one set of CTs, [1222,1#] ['(eci& ratio re*uired]. Each tie circuit &rea'er shall ha%e one set of CTs, [1222,1#] ['(eci& ratio re*uired]. All current transformers shall &e installed around the cast aluminum phase housings or around the feeder ca&les so that the CT is free of dielectric and thermal stress. CT9s shall &e located on the ca&le termination side of the circuit &rea'er. Current transformers shall &e single !S1$ as sho n on the dra ings and shall ha%e a shortcircuit ratings not less than that of the associated s itchgear. They shall &e capa&le of carrying the rated primary current for a period of one minute ith the secondary indings open-circuited as specified in #EEE C.).1/ or related #EC *==((-1 standards. 2o po er signal CTs shall also &e accepta&le. +O2TA"E T1A6S0O15E1S +oltage transformer ratings and locations shall &e as indicated on the dra ings. They shall comply ith the requirements of this section. +oltage transformers shall &e according to #EEE C.).1/ or related #EC *==((-- Standards. 7us&ar +oltage Transformers Single-phase, inducti%e %oltage transformers shall &e housed in indi%idual S0* gas filled compartments and mounted on the top of the appropriate &us&ar phase enclosure. Each &us&ar %oltage transformer shall &e primary fused !current limiting type$ to prohi&it the possi&ility of transfer of a &us&ar %oltage transformer failure to the corresponding &us&ar. The current limiting-fuses shall &e located in an S0* gas insulated housing. The &us&ar %oltage transformers shall &e equipped ith a /-position s itch !Connected I Open - 1eady-to-"round$ to allo for maintenance on the &us&ar %oltage transformer or fuses ithout de-energi<ing the s itchgear. The &us&ar %oltage transformer and fuse housings for each phase shall &e connected &y a piping system, resulting in an indi%idual gas-compartment and monitoring system for each &us&ar %oltage transformer?fuse set. The pressure shall &e monitored &y means of an indicator on the front of the s itchgear. 0or e%acuating and gas filling the &us&ar %oltage transformer, fuse system or replacement of a manometer !pressure gauge$, a separate %al%e ith identification la&el shall &e pro%ided. Each single phase &us&ar %oltage transformer?fuse enclosure shall &e pro%ided pressure relief de%ice. ith its o n
-.* A. 7. C. 3. E.
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[Project Name] [26 13 13] [16341]-3
C. #. -., A.
All secondary leads for %oltage transformers shall &e located in a corresponding lo %oltage compartment.
ired to a molded case circuit &rea'er,
2o po er signal %oltage transformers are also accepta&le. #f furnished, primary current limiting fuses and disconnect s itches for the %oltage transformers are not required. CA72E TE15#6AT#O6S The design of the ca&le terminations !inclusi%e of its accessories$ shall meet the design o&8ecti%es of the gas-insulated s itchgear, including electrical ratings, loss of S0 * gas, Jsafe-totouchK, etc. Ca&le termination system shall &e JCO66ELK plug-in ca&le termination system or appro%ed equal. The design of the complete ca&le termination !inclusi%e of its accessories$ shall &e suita&le for the s itchgear short circuit current and 7#2 as specified. The num&er of ca&les, si<e and type for each incoming and outgoing feeder shall &e sho n on the dra ings or pro%ided as an AppendiB to this specification. Each termination 'it shall include suita&le tinned copper &raid for connection of the ca&le ground shield. A copper lug shall &e crimped at one end of each grounding &raid. A suita&le shipping co%er shall &e pro%ided and fitted securely at each ca&le termination point in the s itchgear. These co%ers should only &e remo%ed 8ust prior to field termination of ca&les. Ca&le preparation and assem&ly of termination tool 'its shall &e the responsi&ility of the purchaser or the purchaser9s installing contractor. 5ETE1#6" A63 1E2AA#6" 5ultifunction 3igital-5etering 5onitors shall &e 42-listed or -recogni<ed, microprocessor-&ased unit suita&le for three- or four- ire systems. 5ultifunction Protecti%e 1elaying: 5icroprocessor-&ased /-phase relays shall &e 42 listed or 42 recogni<ed. Protecti%e relays shall &e pro%ided as follo s: 1. 5ain 7rea'ers a. The relays shall &e Siemens )SF*/ or equi%alent. The relays shall include the follo ing protection functions: .=?.1, .=6?.16, -), (*, (), .>, ,1O?4. &. The relay shall pro%ide trip circuit super%ision of the main &rea'er and alarm on circuit failure. c. The relay shall pro%ide monitoring of the CT and +T circuits and alarm on circuit failure. d. The relay shall pro%ide demand alarms, %ar alarms and po er factor alarms. e. The relay shall pro%ide complete metering including amps, %olts, atts, %ars, ';h, po er factor, frequency, ith demand and min?maB information for each quantity. f. The relays shall pro%ide a graphic mimic display %isually indicating the position of the &rea'er, protection function trip and metering data. g. The relay shall pro%ide four programma&le function 'eys to replace toggle s itches. The relays shall pro%ide 1( programma&le 2E3s. h. The relays shall &e capa&le of internally performing main-tie-main auto-transfer and auto-restore functions. i. The relays shall ha%e programma&le logic capa&ilities to permit use in protection and control systems. Programming soft are must &e compliant ith #EC 11/1 standard for P2C programming. 8. The relays shall ha%e a modular communications processor set to 5od&us 1T4 protocol. The relay must ha%e 1S-(,. communications. '. The relays shall pro%ide #1#"-7 time synchroni<ation for sequence-of-e%ents recording time stamping consistent ith supplying utility standards. l. The relays shall pro%ide complete sequence-of-e%ents recording, time stamped e%ery millisecond. The relays shall pro%ide oscillography capture, ith configura&le pre- and post-fault data capture times. m. Automatic Transfer Scheme: 1.$ The 5ain 7rea'er protection relay controller shall &e factory programmed to operate a three &rea'er transfer scheme as indicated on the dra ings [Project Name] [26 13 13] [16341]-4
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accomplished through the logic program capa&ility and digital input and output capa&ility of the protection relay?&ay controller. -.$ The 5ain 7rea'er relay?&ay controllers shall control and monitor the position of the t o main circuit &rea'ers and the tie &rea'er as defined on the dra ings. The status of each circuit &rea'er shall &e monitored from each main &rea'er. /.$ ;hen the %oltage and?or frequency protection reaches the transfer setting and maintains that %alue for the programmed delay period, the automatic transfer sequence shall &e initiated. (.$ The transfer shall not occur unless the source to recei%e the load has %oltage and frequency ithin the specified ranges and is not in o%ercurrent pic'up. ..$ Phase rotation shall &e determined &y the relays and shall match &et een sources prior to transfer. *.$ All time delays range and incremental ad8ustment shall &e programma&le %ia soft are. Settings shall &e ad8usta&le at the 2C3 display and 'eypad or %ia soft are of the normal po er supply relay. ).$ An eBternal three-position momentary-type test s itch shall &e pro%ided for the test-automatic-reset modes. The test mode shall simulate one source failure. The reset position shall &ypass the time delays on either the initial transfer to or retransfer to normal. ,.$ 2E3 indicating lights on the front of &oth the normal po er main circuit &rea'er relays shall &e set and la&eled as follo s: a.$ 7rea'er closed. &.$ Alternate source &rea'er closed. c.$ 6ormal source a%aila&le. d.$ Alternate source a%aila&le. e.$ Trip f.$ Pic'up g.$ 2ocal Control h.$ Automatic Control >.$ One of the function 'eys on the front of the relay?&ay controller for each main &rea'er shall &e la&eled 5etering. The factor default metering display shall &e displayed on the 2C3 screen &y pressing the 5etering function 'ey. The screen shall display +oltage per phase, Current per phase, Po er functions including ;atts, +ars and +A, Po er factor and 0requency. 0eeder Protection I Transformer Protection a. The transformer differential protection relay shall &e a Siemens )4T*1- or equi%alent. The relay shall pro%ide the follo ing protection functions: ,), ,)CS and (>. &. The transformer differential relay shall ha%e a through-fault restraint setting to pre%ent tripping due to high current eBternal faults. c. The transformer o%ercurrent relay shall &e a Siemens )SF*=- or equi%alent. The relay shall pro%ide the follo ing protection functions: .=?.1, .=6?.16, -*. The relay shall ha%e three analog CT inputs for phase protection and a separate analog CT input for o%ercurrent protection. d. The relays shall pro%ide trip circuit super%ision of the feeder &rea'er and alarm on trip circuit failure. e. The relays shall ha%e a modular communications processor to permit field change &et een 5od&us 1T4, Profi&us-3P and #EC*=,)=-.-1=/ protocols. The relay must &e a&le support either 1S-(,. or fi&er optic communications. f. The relays shall pro%ide complete sequence-of-e%ents recording, time stamped e%ery millisecond. The relays shall pro%ide oscillography capture, ith configura&le pre- and post-fault data capture times. g. The relays shall &e capa&le of sending close or trip signal to the circuit &rea'ers.
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[Project Name] [26 13 13] [16341]-5
-.1= A.
["> %#TT.?@ '@'T./ "> control (ower shall be (rovided b [the switchgear manu&acturer] [AAA >om(an ]+ The 4! ="> batter s stem shall be mounted e;ternal &rom the switchgear+ The batter s stem should be si6ed to carr the switchgear continuous load &or ! hours a&ter loss o& charger out(ut and in addition7 shall be ca(able o& o(erating all control com(onents and switch o(erations twice at the end o& the (eriod+ 9or (ur(oses o& this re*uirement7 a ma;imum o& all o& the medium voltage electricall o(erated load interru(ter switches will be o(erated simultaneousl + 1. %atter , :ead)calcium t (e in sealed7 clear (lastic or glass containers7 com(lete with electrol te7 &ull charged and arranged &or shi(ment with electrol te in cells+ .ach container weighs not more than 02 lb B32 kgC and contains not more than three cells+ %atteries are suitable &or service at an ambient tem(erature ranging &rom )1! to D21 deg >+ -. ?ack, Provide a two)ste( rack that &its available s(ace indicated+ %atteries are (rovided with necessar electrical connections between cells and between rows o& cells and include two ≤ible connectors with bolted)t (e terminals &or out(ut leads+ /. #ccessories, -nclude the &ollowing, a. Thermometers with s(eci&ic)gravit correction scales+ &. < drometer s ringes+ c. 'et o& socket wrenches and other tools re*uired &or batter maintenance+ d. 5all)mounted7 nonmetallic storage rack &itted to store above items+ e. 'et o& cell numerals+ (. >harger, 'tatic)t (e silicon recti&ier e*ui((ed with automatic regulation and (rovision &or manual and automatic adjustment o& the charging rate+ Enit automaticall maintains out(ut voltage within 2+1 (ercent &rom no load to rated charger out(ut current7 with ac in(ut)voltage variation o& (lus or minus 12 (ercent and in(ut)&re*uenc variation o& (lus or minus 3 <6+ 4ther &eatures o& charger include the &ollowing, a. "> #mmeter+ &. "> =oltmeter, /a;imum error o& 1 (ercent at &ull)charge voltage8 o(erates with toggle switch to select between batter and charger voltages+ c. Fround -ndication, Two a((ro(riatel labeled lights to indicate circuit ground7 connected in series between negative and (ositive terminals7 with mid(oint junction connected to ground b normall o(en (ushbutton contact+ d. >a(acit , 'u&&icient to su((l stead load7 &loat)charge batter between 2+22 and 2+21 = (er cell and e*uali6ing charge at 2+33 = (er cell+ e. >harging)?ate 'witch, /anuall o(erated switch (rovides &or trans&erring to higher charging rate+ >harger o(erates automaticall a&ter switch o(eration until manuall reset+ f. #> (ower su((l is 122 =7 62 <67 subject to (lus or minus 12 (ercent variation in voltage and (lus or minus 3)<6 variation in &re*uenc + #&ter loss o& ac (ower su((l &or an interval7 charger automaticall resumes charging batter + >harger regulates rate o& charge to (revent damage due to overload and to (revent &uses or circuit breakers &rom o(ening+ g. Protective 9eature, >urrent)limiting device or circuit7 which limits out(ut current to rating o& charger but does not disconnect charger &rom either batter or ac su((l 8 to (rotect charger &rom damage due to overload7 including short circuit on out(ut terminals+ h. .lectrical 9iltering, ?educe charger audible noise to less than 26 d%+] CO6T1O2 ;#1#6" 0actory installed, complete ith the follo ing: ith &undling, lacing and protection here necessary and complying
-.11 A.
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[Project Name] [26 13 13] [16341]-16
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0leBi&le conductors of 6o. 1( A;" for ires across hinges, control and CT and +T circuits and for interconnections &et een shipping units. Conductors si<ed according to 6EC?60PA )=, 6ational Electrical Code for the duty required.
ACCESSO1#ES Ca&le testing soc'et: / !three$ ca&le testing soc'ets suita&le for %erification of %oltage present. Operation tools: Set of operation tools shall &e pro%ided such as one operation handle for the disconnect s itch, one operation handle for grounding s itch, one charging handle for circuit &rea'er, t o selector 'eys, touch-up paint and grease pac's. +ideo 5onitor: One %ideo monitor !laptop computer$ shall &e pro%ided for %erification of /position s itch. #3E6T#0#CAT#O6 Storage for 5anual: #nclude a rac' or holder for the s itchgear instruction manual and the s itchgear arrangement dra ing.
C. -.1/ A.
PART 3 - E7ECUTION
/.1 A. /.A. #6STA22AT#O6 "eneral: Electrical contractor or s itchgear installer shall install s itchgear in accordance manufacturer9s ritten instructions and the follo ing specifications. A3F4ST5E6TS A63 C2EA6#6" Protecti%e-1elay Settings: +erify that settings sho n on 3ra ings are appropriate for final system configuration and parameters. ;here discrepancies are found, recommend final relay settings for appro%al &efore ma'ing final ad8ustments. #nspect interior and eBterior of installed s itchgear. 1emo%e paint splatters and other spots, dirt and de&ris. Touch up scratches and mars of finish to match original finish. TEST#6" A. The s itchgear furnished under this specification shall &e fully tested and documented &y certified production test reports, in accordance ith A6S# C/).-=.- !clause *./$ and #EC *=->, !*--)1--==$ !Clause )$. As a minimum, the follo ing production tests shall &e conducted for the medium %oltage portion of the s itchgear, in accordance ith #EC *=->, !*--)1--==$: 1. Po er-frequency %oltage !high-pot$ test 1 min. -. 3ielectric test of auBiliary circuit ith - '+. /. 5easurement of the resistance of the main circuit. (. Partial discharge test .. 5echanical operation test *. Pressure test of gas-filled compartments ). "as tightness test of gas-filled compartments ,. Test of auBiliary de%ices >. +erification of the correct iring 1=. 5easurement of gas condition after filling. 11. Lray of &ushings ;A11A6TA A. Equipment manufacturer arrants that all goods supplied are free of non-conformities in or'manship and materials for one year from date of initial operation, &ut not more than eighteen months from date of shipment. ith
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[Project Name] [26 13 13] [16341]-11
/.. A. 7. C. 3.
["./4N'T?#T-4N 'witchgear /anu&acturer shall (rovide a &actor )authori6ed service re(resentative &or a (eriod o& B3C da s to train 4wnerGs maintenance (ersonnel in the &ollowing, -n (rocedures and schedules related to startu( and shutdown7 troubleshooting7 servicing and (reventive maintenance+ ?eview data in the maintenance manuals+ 'chedule training with 4wner with at least three weeks advance notice+ ]
END O8 SECTION
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[Project Name] [26 13 13] [16341]-12
