Cummins Med Voltage Switchgear
Content
Digital Paralleling
PowerCommand® Medium Voltage Digital Paralleling Systems
PowerCommand
THE POWER OF ONE™ Traditional power systems often combine engines, alternators, controls, paralleling equipment, and switchgear all from various manufacturers. That makes system integration a challenge and leaves customers responsible for resolving subsequent job-site problems at install, commissioning, or maintenance. Cummins Power Generation changes all that. PowerCommand Digital Paralleling Systems are designed, prototype tested, manufactured, and serviced by one manufacturer, who takes responsibility for the entire on-site power system – not just one piece of it. That’s the Power Of One – one system, with components created to work together, designed, built, pre-integrated, and serviced by one company. The result is reliability, optimum system performance, and minimum system cost – all backed by the largest power generation system support organization in the world.
®
THE SYSTEM WITH NO EQUAL Today, having a reliable, flexible and easy-to-operate on-site power generation system is more important than ever before. Reliable – because the costs of power outages and the consequences of disruptions to your business have never been greater. Flexible – because your power needs, supply circumstances and utility costs are dynamic. Easy-to-operate – because the touchscreen controls means information
McMinnville Electric Systems in Tennessee and Cirent Semiconductor in Florida, use PowerCommand Digital Paralleling Systems for peaking and emergency back-up power, while paralleling with the local utility.
is presented in an easy to understand format. Whether your on-site power system is relied on for prime power, emergency backup, or for taking advantage of power sharing opportunities with your local utility, the key to getting all these benefits and more is the advanced PowerCommand Digital Paralleling System from Cummins Power Generation. No other system offers all the benefits you get with PowerCommand Digital Paralleling. From true digital control of startup, synchronization, and bumpless power transitions – to sophisticated diagnostics, remote monitoring, and networkability – PowerCommand Digital Paralleling Systems are without equal.
for true power system reliability, flexibility, and ease-of-use.
DIGITAL PARALLELING – A HIGHER STANDARD In less than 15 seconds, PowerCommand Digital Paralleling Systems can parallel and synchronize all your diesel and multiple gas-engine generator sets with the utility. And it’s the same fast, consistent performance each and every time. Only PowerCommand has been designed from the ground up as a true distributed logic concept: paralleling controls mounted on the gensets, low or medium voltage power section, and the Digital Master Control for supervisory functions. Combine these advantages with a smaller footprint, lower system costs, and easy-to-use intuitive interfaces that share the same data throughout the system, and you’ve got state-of- the-art performance that is unsurpassed. APPLICATIONS PowerCommand Medium Voltage Switchgear is already in service in hundreds of applications worldwide – including electric generation and distribution systems, industrial plants, commercial buildings, hospitals, wastewater treatment plants, transportation systems, and pipeline stations. This class of switchgear protects transformers, motors, generators, capacitors, distribution lines, and feeder circuits. PowerCommand Medium Voltage Switchgear can also be specified to provide critical main service entrance protection and controls in these applications.
Power Command System Legend: Network / SCADA wires Control wires
MODEL 150 ISOLATED BUS APPLICATIONS The Model 150 Master Control provides all the functionality of traditional controls with a simpler design that is easier to use. MODEL 200 ISOLATED BUS APPLICATIONS The Model 200 has expanded graphics capabilities, optional networking, data logging, and dialout alarms and event reporting for isolated bus applications. MODEL 300 INFINITE BUS APPLICATIONS Offers all the features of a Model 200, plus the flexibility to parallel with single to multiple utility sources.
Digital Paralleling
TRADITIONAL OPERATOR CONTROL PANEL
A LEAP FROM TRADITION Paralleling equipment from many manufacturers, looks, works and uses many of the same components as it did 25 years ago. But PowerCommand brings your power systems into the 21st Century. Its power, simplicity, and ease of use are obvious from even a quick inspection of the hardware. Rather than hundreds of components wired in custom-manufactured switchgear lineups, our digital paralleling equipment has revolutionized the way paralleling is designed and manufactured. All Cummins Power Generation Digital Master Controls are designed and manufactured around standardized control blocks for increased reliability. As a result, PowerCommand systems deliver better performance with increased functionality. And they use fewer components, taking up to 40% less space, and are easier to service than traditional systems.
Controls for most paralleling equipment are a maze of meters, switches and cryptically labeled lamps that many operators never figure out.
The PowerCommand digital paralleling control is serviced with a PC-based tool, InPower™, that allows diagnosis, data monitoring, and adjustment of all control functions – even governing, synchronizing, and voltage regulation. Since adjustments are possible via modem, factory-based technicians can directly connect and evaluate problems.
TODAY’S USER-FRIENDLY TOUCHSCREEN CONTROLS
DIGITAL MASTER CONTROL – STANDARD DESIGN The standardized design utilizes distributed logic to form a series of basic modular units, control packages, and instrumentation. For most switchgear ratings, circuit configurations and functions, one basic size unit is used. This design provides application flexibility, reliability, efficiency, and economy by minimizing engineering time to plan and lay out the switchgear. With PowerCommand Digital Master Controls the genset performs all paralleling functions, the digital master control automates load add/shed, data logging, and operator interface and the switchgear provides basic circuit protection, and electrical switching functions. Components are neutralized, increasing reliability. So single component failure cannot bring the entire system down.
PowerCommand Digital Master Control features an easy-to-use touchscreen with more operational and diagnostic information for operators.
A new standard of control.
RELIABLE Fewer parts mean fewer failures, and when compared to traditional paralleling control systems, the Digital Master Control represents a 20-fold decrease in the number of components and wiring. System reliability is based on a standard design platform. Reliability through repeatability – that is the simple premise behind the Cummins Power Generation Digital Master Control. EASY TO USE The Digital Master Control uses an interactive touchscreen, housed in a compact enclosure, not a large complex looking gear-mounted control. Instead of flashing lamps, multiple switches and swinging needles, you’ll see simple graphical displays and instructions. Messages are prioritized and everything is in one location. Models 200 & 300 incorporate the system drawing and operation manual into the touchscreen. All this makes it easier to respond to emergency conditions and maximize up-time. FLEXIBLE Powered by a full-featured industrial PC, the color touchscreen on Models 200 & 300 makes it easy to program and update with a commercially available Windows®-based software platform. The PC platform makes it easy to interface to existing media, like Ethernet, so you can transmit information without creating an all new infrastructure. In fact, any place you can put a computer, you can locate a redundant operator interface to monitor the power system.
ONELINE DIAGRAM s Permits operator to understand the entire power system at a glance. s Graphic and audible indication of alarms, trips, warnings, and shut downs provide alerts to changing system dynamics. s Flashing task bar indicates active alarms. s Online Help available to all operators. s Menu button allows for easy system navigation.
PowerCommand Digital Master Control
GENERATOR DATA DISPLAY s Graphically display 21 generator parameters in Digital or Analog format. s Bar graphs visually highlight normal, warning, and shutdown status. s Chart function allows for easy graphing and data logging of all key system parameters. Digital Generator Data Display s Graphical representation of system characteristics: – Single lines – 11 AC metering values – 10 Critical engine status parameters – Number of systems starts – Engine hours – Event logging – Time/date stamp
Analog Generator Data Display
built for the real world.
s Padlockable access handles
s Generator/utility transfer pair module
s 15" Color PC-based touchscreen
s Genset interface
s Load add/shed plates module s Angled panel for easier viewing
s System PLC with optional sync • Hot standby • PLC Tap for quick network connection
s PowerCommand Master Control The PowerCommand MasterControl is a state-of-theart, microprocessor-based paralleling system used with PowerCommand paralleling generators sets and switchgear in medium voltage applications. s Redefining reliability Distributed logic design enables each individual system component to remain fully functional even if the Digital Master Controller fails. Improves system reliability and reduces maintenance costs. s Construction Rugged 12-gauge sheet metal with rust-inhibiting finishes. Control components are isolated or shielded from live components. s Touchscreen High-resolution color touchscreen allows quick access to system operation and information, including one-line diagram. s AC Output Metering RMS AC metering transducers provides input via a serial link to the system PLC so AC metering data can be displayed on the touchscreen. s Easy To Service PowerCommand’s digital controls interface directly with the generator set and run continuously. They provide self-diagnostics, event reporting, and detect failures even when the system is not in use. s Modularized Design The simplified layout and easy wiring allows for easy service and expansion. All modules are bench-wired and tested. Standard interconnects and parts increases reliability.
s Transducers to meter import/export levels
s “Best” battery supply to PC and PLC
PowerCommand Swi
s Control Power Transformers. Control power transformers rated up to 15 kVA are drawer mounted and can be completely withdrawn from the front of the switchgear for ease of maintenance. A secondary circuit breaker mechanical interlock is provided and must be opened before the transformer can be withdrawn for access to primary fuses. s Voltage Transformers. Front accessible, drawer-mounted voltage transformers can be completely withdrawn on extension rails. For operator safety, the voltage transformers are disconnected and grounded when moved to the withdrawn position. s Hinged Front Door. Relays and metering instrumentation are mounted on the doors in standardized arrangement to satisfy customer requirements. Each breaker compartment door provides a racking access port to allow moving the circuit breaker to or from the connected position with the door closed. (Option for single full-height door with one-high configuration.)
s Horizontal Drawout Circuit Breaker. VR vacuum circuit breakers feature a horizontal drawout design. Test/disconnected and test/connected positions are provided.
PowerCommand Vacuum Metal-Clad Switchgear STANDARD FEATURES: Metal-Clad Switchgear as defined by ANSI C37.20.2 includes: s UL-Listed s Fully compartmented construction s Grounded metal barriers enclose all live parts s Automatic shutters s Insulated bus s Mechanical interlocks s Disconnect type voltage transformers – CPT and VT s Grounded breaker truck in and between test/disconnected and connected positions s Low voltage instrument/control compartment isolated from primary voltage areas RATINGS: s 4.76-15 kV (to 13.8 kV nominal) s 1200-3000 Amperes s 250-1000 MVA Interrupting capacity s 60 and 95 kV BIL s Indoor and outdoor enclosures
tchgear Components
s Cable Space. Top or bottom power cable entry space is provided. The quantity of cable termination devices and space for surge arresters vary with the ratings of breakers selected for each vertical section. s Main Bus and Insulation. Main bus and runbacks are insulated with a track-resistant, flame retardant epoxy coating produced by the fluidized bed process. Bus support standoff insulators are glass polyester rated at 5 kV and porcelain rated at 15 kV. Bus joints are insulated by vinyl boots. Access covers and provided for main bus inspection from front and rear. s Frame and Housing. Precisionformed steel frames and inner panels, finished with a superior TGIC polyester powder coating process, provide a strong rust-resistant structure with rigid alignment of components.
s Main Bus Barriers. Main bus barriers between bays are track-resistant, flame retardant glass polyester. Optional porcelain inserts are available with the glass polyester barriers.
Side view with side cover sheet removed
s Compartment Barriers. Grounded metal barriers separate the main compartments – breakers, main bus, cable, instrument/relay (low voltage area), and auxiliary (VT and/or CPT).
s Racking System. A high quality gear-driven racking mechanism is center-mounted on the cell floor, providing balanced movement of the breaker between cell positions. The racking system is coordinated with safety interlocks to prevent movement of the breaker unless main contacts are in the open position.
s Automatic Shutters. When the breaker is withdrawn from the connected position, the racking mechanism linkage positively rotates the grounded metal shutters into a position that covers the energized components.
More power to you
CIRCUIT BREAKER RATINGS DATA CHART
Nominal Rating Rated Rated Voltage Insulation Level Cont. Rated Withstand Current Max Min Low Impulse Voltage 60 Hertz Voltage Range Voltage Freq. 1.2x50µS kVAmps.kVFactor kVkVkVrms rms rms K rms rms Crest 2 4.16 4.16 4.16 4.16 4.16 4.16 7.20 7.20 7.20 13.8 13.8 13.8 13.8 13.8 13.8 13.8 13.8 13.8 1200 2000 3000 1200 2000 3000 1200 2000 3000 1200 2000 3000 1200 2000 3000 1200 2000 3000 4.76 4.76 4.76 4.76 4.76 4.76 8.25 8.25 8.25 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 1.24 1.24 1.24 1.19 1.19 1.19 1.25 1.25 1.25 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.30 3.85 3.85 3.85 4.0 4.0 4.0 6.6 6.6 6.6 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 19 19 19 19 19 19 36 36 36 36 36 36 36 36 36 36 36 36 60 60 60 60 60 60 95 95 95 95 95 95 95 95 95 95 95 95 Interrupting Ratings1 Amps. - Symmetrical Max. Nom. Min. kV kV kV Amps.Amps.Amps.rms2 rms rms 29,000 29,000 29,000 41,000 41,000 41,000 33,000 33,000 33,000 18,000 18,000 18,000 28,000 28,000 28,000 37,000 37,000 37,000 33,200 33,200 33,200 46,900 46,900 46,900 37,800 37,800 37,800 19,500 19,500 19,500 30,400 30,400 30,400 40,200 40,200 40,200 36,000 36,000 36,000 49,000 49,000 49,000 41,000 41,000 41,000 23,000 23,000 23,000 36,000 36,000 36,000 48,000 48,000 48,000 Short Time Rating 3 Sec. Amps.rms 36,000 36,000 36,000 49,000 49,000 49,000 41,000 41,000 41,000 23,000 23,000 23,000 36,000 36,000 36,000 48,000 48,000 48,000 Close & Latch Rating Amps.rms3 58,000 58,000 58,000 78,000 78,000 78,000 66,000 66,000 66,000 37,000 37,000 37,000 58,000 58,000 58,000 77,000 77,000 77,000 Type of Breaker VR-05025-12 VR-05025-20 VR-05025-30* VR-05035-12 VR-05035-20 VR-05035-30* VR-08050-12 VR-08050-20 VR-08050-30* VR-15050-12 VR-15050-20 VR-15050-30* VR-15075-12 VR-15075-20 VR-15075-30* VR-15100-12 VR-15100-20 VR-15100-30* Three Phase MVA 250 250 250 350 350 350 500 500 500 500 500 500 750 750 750 1000 1000 1000 Asymmetrical Rating Factor3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 Interrupting Time Cycles 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
* Availability to be announced. x For interrupting current ratings at operating voltages other than those listed, used the following formula: Iop = Vmax Vop x I V max
y These values apply with circuit breaker in or out of enclosure. ➂ Rated Short Circuit Current (at rated Max kV). ➃ Rating factor is based on breaker speed from initiation of trip signal to contact parting, allowing for 1/2 cycle relay time. To obtain the asymmetrical current interrupting capacity of the breaker, multiply the symmetrical current by 1.2. ➄ Close and Latch Rating (Momentary) Amps rms = (1.6K) (Rated Short Circuit Current). Additional Close and Latch Rating in kA Crest = (2.7K) (Rated Short Circuit Current).
The calculated current should not exceed the maximum interrupting current rating, Imax: I max = K x IV max
Breaker Identification VR 05 025 12 Continuous Current Rating MVA Rating Voltage Rating Breaker Type
THE RIGHT POWER FROM THE RIGHT SUPPLIER Cummins Power Generation is a world leader in the design and manufacture of power generation equipment, including PowerCommand Digital Paralleling Systems for switching, control, and protective applications. We also provide single-source warranty, planned maintenance, and round-the-clock emergency service 24 hours a day, seven days a week, including back-up rental power through our network of over 170 distributors in 110 countries around the world. For more information about how PowerCommand Digital Paralleling Systems can help meet your power demands, call your local Cummins Power Generation Distributor at 1-800-888-6626.
The Power of One
™
Visit at www.cumminspowergeneration.com 1400 73rd Avenue N.E., Minneapolis, MN 55432 Phone: 763-574-5000, Fax: 763-574-5298
Cummins Power Generation is a registered trademark of Cummins Inc. Power Command and The Power of One are trademarks of Cummins Power Generation Corporation. Cummins is a registered trademark of Cummins Inc. All other trademarks are owned by their respective companies. Backfeed to a utility system can cause electrocution and/or property damage. Do not connect to any building’s electrical system except through an approved device or after building main switch is opened. Specifications are subject to change without notice. Printed in the U.S.A. 4/02. © 2002 Cummins Power Generation
Bulletin F-1442
PowerCommand® Medium Voltage Digital Paralleling Systems
PowerCommand
THE POWER OF ONE™ Traditional power systems often combine engines, alternators, controls, paralleling equipment, and switchgear all from various manufacturers. That makes system integration a challenge and leaves customers responsible for resolving subsequent job-site problems at install, commissioning, or maintenance. Cummins Power Generation changes all that. PowerCommand Digital Paralleling Systems are designed, prototype tested, manufactured, and serviced by one manufacturer, who takes responsibility for the entire on-site power system – not just one piece of it. That’s the Power Of One – one system, with components created to work together, designed, built, pre-integrated, and serviced by one company. The result is reliability, optimum system performance, and minimum system cost – all backed by the largest power generation system support organization in the world.
®
THE SYSTEM WITH NO EQUAL Today, having a reliable, flexible and easy-to-operate on-site power generation system is more important than ever before. Reliable – because the costs of power outages and the consequences of disruptions to your business have never been greater. Flexible – because your power needs, supply circumstances and utility costs are dynamic. Easy-to-operate – because the touchscreen controls means information
McMinnville Electric Systems in Tennessee and Cirent Semiconductor in Florida, use PowerCommand Digital Paralleling Systems for peaking and emergency back-up power, while paralleling with the local utility.
is presented in an easy to understand format. Whether your on-site power system is relied on for prime power, emergency backup, or for taking advantage of power sharing opportunities with your local utility, the key to getting all these benefits and more is the advanced PowerCommand Digital Paralleling System from Cummins Power Generation. No other system offers all the benefits you get with PowerCommand Digital Paralleling. From true digital control of startup, synchronization, and bumpless power transitions – to sophisticated diagnostics, remote monitoring, and networkability – PowerCommand Digital Paralleling Systems are without equal.
for true power system reliability, flexibility, and ease-of-use.
DIGITAL PARALLELING – A HIGHER STANDARD In less than 15 seconds, PowerCommand Digital Paralleling Systems can parallel and synchronize all your diesel and multiple gas-engine generator sets with the utility. And it’s the same fast, consistent performance each and every time. Only PowerCommand has been designed from the ground up as a true distributed logic concept: paralleling controls mounted on the gensets, low or medium voltage power section, and the Digital Master Control for supervisory functions. Combine these advantages with a smaller footprint, lower system costs, and easy-to-use intuitive interfaces that share the same data throughout the system, and you’ve got state-of- the-art performance that is unsurpassed. APPLICATIONS PowerCommand Medium Voltage Switchgear is already in service in hundreds of applications worldwide – including electric generation and distribution systems, industrial plants, commercial buildings, hospitals, wastewater treatment plants, transportation systems, and pipeline stations. This class of switchgear protects transformers, motors, generators, capacitors, distribution lines, and feeder circuits. PowerCommand Medium Voltage Switchgear can also be specified to provide critical main service entrance protection and controls in these applications.
Power Command System Legend: Network / SCADA wires Control wires
MODEL 150 ISOLATED BUS APPLICATIONS The Model 150 Master Control provides all the functionality of traditional controls with a simpler design that is easier to use. MODEL 200 ISOLATED BUS APPLICATIONS The Model 200 has expanded graphics capabilities, optional networking, data logging, and dialout alarms and event reporting for isolated bus applications. MODEL 300 INFINITE BUS APPLICATIONS Offers all the features of a Model 200, plus the flexibility to parallel with single to multiple utility sources.
Digital Paralleling
TRADITIONAL OPERATOR CONTROL PANEL
A LEAP FROM TRADITION Paralleling equipment from many manufacturers, looks, works and uses many of the same components as it did 25 years ago. But PowerCommand brings your power systems into the 21st Century. Its power, simplicity, and ease of use are obvious from even a quick inspection of the hardware. Rather than hundreds of components wired in custom-manufactured switchgear lineups, our digital paralleling equipment has revolutionized the way paralleling is designed and manufactured. All Cummins Power Generation Digital Master Controls are designed and manufactured around standardized control blocks for increased reliability. As a result, PowerCommand systems deliver better performance with increased functionality. And they use fewer components, taking up to 40% less space, and are easier to service than traditional systems.
Controls for most paralleling equipment are a maze of meters, switches and cryptically labeled lamps that many operators never figure out.
The PowerCommand digital paralleling control is serviced with a PC-based tool, InPower™, that allows diagnosis, data monitoring, and adjustment of all control functions – even governing, synchronizing, and voltage regulation. Since adjustments are possible via modem, factory-based technicians can directly connect and evaluate problems.
TODAY’S USER-FRIENDLY TOUCHSCREEN CONTROLS
DIGITAL MASTER CONTROL – STANDARD DESIGN The standardized design utilizes distributed logic to form a series of basic modular units, control packages, and instrumentation. For most switchgear ratings, circuit configurations and functions, one basic size unit is used. This design provides application flexibility, reliability, efficiency, and economy by minimizing engineering time to plan and lay out the switchgear. With PowerCommand Digital Master Controls the genset performs all paralleling functions, the digital master control automates load add/shed, data logging, and operator interface and the switchgear provides basic circuit protection, and electrical switching functions. Components are neutralized, increasing reliability. So single component failure cannot bring the entire system down.
PowerCommand Digital Master Control features an easy-to-use touchscreen with more operational and diagnostic information for operators.
A new standard of control.
RELIABLE Fewer parts mean fewer failures, and when compared to traditional paralleling control systems, the Digital Master Control represents a 20-fold decrease in the number of components and wiring. System reliability is based on a standard design platform. Reliability through repeatability – that is the simple premise behind the Cummins Power Generation Digital Master Control. EASY TO USE The Digital Master Control uses an interactive touchscreen, housed in a compact enclosure, not a large complex looking gear-mounted control. Instead of flashing lamps, multiple switches and swinging needles, you’ll see simple graphical displays and instructions. Messages are prioritized and everything is in one location. Models 200 & 300 incorporate the system drawing and operation manual into the touchscreen. All this makes it easier to respond to emergency conditions and maximize up-time. FLEXIBLE Powered by a full-featured industrial PC, the color touchscreen on Models 200 & 300 makes it easy to program and update with a commercially available Windows®-based software platform. The PC platform makes it easy to interface to existing media, like Ethernet, so you can transmit information without creating an all new infrastructure. In fact, any place you can put a computer, you can locate a redundant operator interface to monitor the power system.
ONELINE DIAGRAM s Permits operator to understand the entire power system at a glance. s Graphic and audible indication of alarms, trips, warnings, and shut downs provide alerts to changing system dynamics. s Flashing task bar indicates active alarms. s Online Help available to all operators. s Menu button allows for easy system navigation.
PowerCommand Digital Master Control
GENERATOR DATA DISPLAY s Graphically display 21 generator parameters in Digital or Analog format. s Bar graphs visually highlight normal, warning, and shutdown status. s Chart function allows for easy graphing and data logging of all key system parameters. Digital Generator Data Display s Graphical representation of system characteristics: – Single lines – 11 AC metering values – 10 Critical engine status parameters – Number of systems starts – Engine hours – Event logging – Time/date stamp
Analog Generator Data Display
built for the real world.
s Padlockable access handles
s Generator/utility transfer pair module
s 15" Color PC-based touchscreen
s Genset interface
s Load add/shed plates module s Angled panel for easier viewing
s System PLC with optional sync • Hot standby • PLC Tap for quick network connection
s PowerCommand Master Control The PowerCommand MasterControl is a state-of-theart, microprocessor-based paralleling system used with PowerCommand paralleling generators sets and switchgear in medium voltage applications. s Redefining reliability Distributed logic design enables each individual system component to remain fully functional even if the Digital Master Controller fails. Improves system reliability and reduces maintenance costs. s Construction Rugged 12-gauge sheet metal with rust-inhibiting finishes. Control components are isolated or shielded from live components. s Touchscreen High-resolution color touchscreen allows quick access to system operation and information, including one-line diagram. s AC Output Metering RMS AC metering transducers provides input via a serial link to the system PLC so AC metering data can be displayed on the touchscreen. s Easy To Service PowerCommand’s digital controls interface directly with the generator set and run continuously. They provide self-diagnostics, event reporting, and detect failures even when the system is not in use. s Modularized Design The simplified layout and easy wiring allows for easy service and expansion. All modules are bench-wired and tested. Standard interconnects and parts increases reliability.
s Transducers to meter import/export levels
s “Best” battery supply to PC and PLC
PowerCommand Swi
s Control Power Transformers. Control power transformers rated up to 15 kVA are drawer mounted and can be completely withdrawn from the front of the switchgear for ease of maintenance. A secondary circuit breaker mechanical interlock is provided and must be opened before the transformer can be withdrawn for access to primary fuses. s Voltage Transformers. Front accessible, drawer-mounted voltage transformers can be completely withdrawn on extension rails. For operator safety, the voltage transformers are disconnected and grounded when moved to the withdrawn position. s Hinged Front Door. Relays and metering instrumentation are mounted on the doors in standardized arrangement to satisfy customer requirements. Each breaker compartment door provides a racking access port to allow moving the circuit breaker to or from the connected position with the door closed. (Option for single full-height door with one-high configuration.)
s Horizontal Drawout Circuit Breaker. VR vacuum circuit breakers feature a horizontal drawout design. Test/disconnected and test/connected positions are provided.
PowerCommand Vacuum Metal-Clad Switchgear STANDARD FEATURES: Metal-Clad Switchgear as defined by ANSI C37.20.2 includes: s UL-Listed s Fully compartmented construction s Grounded metal barriers enclose all live parts s Automatic shutters s Insulated bus s Mechanical interlocks s Disconnect type voltage transformers – CPT and VT s Grounded breaker truck in and between test/disconnected and connected positions s Low voltage instrument/control compartment isolated from primary voltage areas RATINGS: s 4.76-15 kV (to 13.8 kV nominal) s 1200-3000 Amperes s 250-1000 MVA Interrupting capacity s 60 and 95 kV BIL s Indoor and outdoor enclosures
tchgear Components
s Cable Space. Top or bottom power cable entry space is provided. The quantity of cable termination devices and space for surge arresters vary with the ratings of breakers selected for each vertical section. s Main Bus and Insulation. Main bus and runbacks are insulated with a track-resistant, flame retardant epoxy coating produced by the fluidized bed process. Bus support standoff insulators are glass polyester rated at 5 kV and porcelain rated at 15 kV. Bus joints are insulated by vinyl boots. Access covers and provided for main bus inspection from front and rear. s Frame and Housing. Precisionformed steel frames and inner panels, finished with a superior TGIC polyester powder coating process, provide a strong rust-resistant structure with rigid alignment of components.
s Main Bus Barriers. Main bus barriers between bays are track-resistant, flame retardant glass polyester. Optional porcelain inserts are available with the glass polyester barriers.
Side view with side cover sheet removed
s Compartment Barriers. Grounded metal barriers separate the main compartments – breakers, main bus, cable, instrument/relay (low voltage area), and auxiliary (VT and/or CPT).
s Racking System. A high quality gear-driven racking mechanism is center-mounted on the cell floor, providing balanced movement of the breaker between cell positions. The racking system is coordinated with safety interlocks to prevent movement of the breaker unless main contacts are in the open position.
s Automatic Shutters. When the breaker is withdrawn from the connected position, the racking mechanism linkage positively rotates the grounded metal shutters into a position that covers the energized components.
More power to you
CIRCUIT BREAKER RATINGS DATA CHART
Nominal Rating Rated Rated Voltage Insulation Level Cont. Rated Withstand Current Max Min Low Impulse Voltage 60 Hertz Voltage Range Voltage Freq. 1.2x50µS kVAmps.kVFactor kVkVkVrms rms rms K rms rms Crest 2 4.16 4.16 4.16 4.16 4.16 4.16 7.20 7.20 7.20 13.8 13.8 13.8 13.8 13.8 13.8 13.8 13.8 13.8 1200 2000 3000 1200 2000 3000 1200 2000 3000 1200 2000 3000 1200 2000 3000 1200 2000 3000 4.76 4.76 4.76 4.76 4.76 4.76 8.25 8.25 8.25 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 1.24 1.24 1.24 1.19 1.19 1.19 1.25 1.25 1.25 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.30 3.85 3.85 3.85 4.0 4.0 4.0 6.6 6.6 6.6 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 19 19 19 19 19 19 36 36 36 36 36 36 36 36 36 36 36 36 60 60 60 60 60 60 95 95 95 95 95 95 95 95 95 95 95 95 Interrupting Ratings1 Amps. - Symmetrical Max. Nom. Min. kV kV kV Amps.Amps.Amps.rms2 rms rms 29,000 29,000 29,000 41,000 41,000 41,000 33,000 33,000 33,000 18,000 18,000 18,000 28,000 28,000 28,000 37,000 37,000 37,000 33,200 33,200 33,200 46,900 46,900 46,900 37,800 37,800 37,800 19,500 19,500 19,500 30,400 30,400 30,400 40,200 40,200 40,200 36,000 36,000 36,000 49,000 49,000 49,000 41,000 41,000 41,000 23,000 23,000 23,000 36,000 36,000 36,000 48,000 48,000 48,000 Short Time Rating 3 Sec. Amps.rms 36,000 36,000 36,000 49,000 49,000 49,000 41,000 41,000 41,000 23,000 23,000 23,000 36,000 36,000 36,000 48,000 48,000 48,000 Close & Latch Rating Amps.rms3 58,000 58,000 58,000 78,000 78,000 78,000 66,000 66,000 66,000 37,000 37,000 37,000 58,000 58,000 58,000 77,000 77,000 77,000 Type of Breaker VR-05025-12 VR-05025-20 VR-05025-30* VR-05035-12 VR-05035-20 VR-05035-30* VR-08050-12 VR-08050-20 VR-08050-30* VR-15050-12 VR-15050-20 VR-15050-30* VR-15075-12 VR-15075-20 VR-15075-30* VR-15100-12 VR-15100-20 VR-15100-30* Three Phase MVA 250 250 250 350 350 350 500 500 500 500 500 500 750 750 750 1000 1000 1000 Asymmetrical Rating Factor3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 Interrupting Time Cycles 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
* Availability to be announced. x For interrupting current ratings at operating voltages other than those listed, used the following formula: Iop = Vmax Vop x I V max
y These values apply with circuit breaker in or out of enclosure. ➂ Rated Short Circuit Current (at rated Max kV). ➃ Rating factor is based on breaker speed from initiation of trip signal to contact parting, allowing for 1/2 cycle relay time. To obtain the asymmetrical current interrupting capacity of the breaker, multiply the symmetrical current by 1.2. ➄ Close and Latch Rating (Momentary) Amps rms = (1.6K) (Rated Short Circuit Current). Additional Close and Latch Rating in kA Crest = (2.7K) (Rated Short Circuit Current).
The calculated current should not exceed the maximum interrupting current rating, Imax: I max = K x IV max
Breaker Identification VR 05 025 12 Continuous Current Rating MVA Rating Voltage Rating Breaker Type
THE RIGHT POWER FROM THE RIGHT SUPPLIER Cummins Power Generation is a world leader in the design and manufacture of power generation equipment, including PowerCommand Digital Paralleling Systems for switching, control, and protective applications. We also provide single-source warranty, planned maintenance, and round-the-clock emergency service 24 hours a day, seven days a week, including back-up rental power through our network of over 170 distributors in 110 countries around the world. For more information about how PowerCommand Digital Paralleling Systems can help meet your power demands, call your local Cummins Power Generation Distributor at 1-800-888-6626.
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Visit at www.cumminspowergeneration.com 1400 73rd Avenue N.E., Minneapolis, MN 55432 Phone: 763-574-5000, Fax: 763-574-5298
Cummins Power Generation is a registered trademark of Cummins Inc. Power Command and The Power of One are trademarks of Cummins Power Generation Corporation. Cummins is a registered trademark of Cummins Inc. All other trademarks are owned by their respective companies. Backfeed to a utility system can cause electrocution and/or property damage. Do not connect to any building’s electrical system except through an approved device or after building main switch is opened. Specifications are subject to change without notice. Printed in the U.S.A. 4/02. © 2002 Cummins Power Generation
Bulletin F-1442
