VIP3035 Tech Manual - V2
Content
Merlin Gerin Ringmaster VIP30, VIP 35 protection relays operation, testing and commissioning
version 002/ January 2001
contents
1. features of the VIP30 / VIP35...................................................................3 2. use and settings ........................................................................................4 3. current transformers .................................................................................8 4. connection scheme ..................................................................................9 5. assembly and wiring ................................................................................10 6. technical characteristics ..........................................................................13 7 testing of the VIP30/35 and use of the VAP6.........................................16 8. commissioning Ringmaster with VIP30/35 ........................................18
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 2
1. features of the VIP30 and VIP35
self-powered protection relays
Mitop
Current transformers
n CT’s 500/200/1 The VIP30/35 relays must be used with the CT’s to obtain the specified characteristics. - The Current Transformers have 2 ranges; according to the range used, the setting current is adjustable from 8A to 80A or from 20A to 200A. - The cross-section of the core and the resistance of the winding are adapted to protect the VIP30/35 in the event of a short-circuit.
VIP30 VIP35
simplified schematic of wiring connections
t
The VIP30 and VIP35 relays are designed for use in distribution networks, mainly in MV/LV substations in which they provide protection for upstream transformers. They are self-powered relays requiring no external DC power source or batteries, making them the ideal solution for location in remote areas or where auxiliary supplies are not available. n The VIP30 provides protection against phase-to-phase faults. n The VIP35 provides protection against phase-to-phase faults and earth faults.
description
n The VIP30 and VIP35 relays are mounted in a polycarbonate injected casing which protects them against dripping water and dust. The front is protected by a transparent cover fitted with a sealing joint. The cover may be leadsealed to prohibit access to the settings. n Rotating selector switches are used for setting. The phase setting current and earth fault setting current are set directly in amperes. This means that the scale on the front must be adapted to suit the range used on the CT. This is done by positioning a "setting scale label" on the relay at the time of testing/commissioning. n The connections are made on the back of the relay.
phase protection
Phase protection uses an IDMT setting that operates at 1.2 times the setting current (Is). Phase protection on the VIP30 and VIP35 are the same.
1,2 Is
I
Phase protection curve, VIP30/35
earth protection
t
to>
Protection against earth faults operates by measurement of residual current based on the sum of the CT secondary currents. Measurement is carried out by a CSH30 core balance CT mounted on the back of the VIP35 unit. Earth protection operates with definite time; the setting and time delay are adjustable.
Io> I
Earth fault protection curve for VIP 35
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 3
2. use and settings
VIP30 relay front panel
1 2
phase overcurrent
VIP 30
sensors: 200/1 S1,S2 to be used
a
Is
18 22 28 36 15 12 10 46 56 8 80 68 (A) 1.2Is
b
d
VAP6 test plug
c
- VIP30 front panel
phase overcurrent setting
1. phase overcurrent setting area 2. phase overcurrent setting (Is)
other functions
a. setting scale label (reversible) b. current transformer and range info. c. VAP6 test plug d. minimum time delay switch
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 4
2. use and settings (cont'd)
VIP35 relay front panel
1 2
phase overcurrent
VIP 35
sensors: 200/1 S1, S2 to be used
a
Is
18 22 28 36 15 12 10 46 56 8 80 68 (A) 1.2Is
b
to>
d
Io>
20 48 15 60 12 80 10 120 100 25 30 38 on off inrush current delay to> 0.3 0.35 0.4 0.25 0.5 0.2 0.6 0.7 0.15 0.1 1 0.8 (s )
VAP6 test plug
c
Io>
earth fault
(A)
- VIP35 facia layout
3
4
6
5
7
phase overcurrent setting
1. phase overcurrent setting area 2. phase overcurrent setting Is
other functions
a. setting scale label (reversible) b. current transformer and range information. c. VAP6 test plug d. minimum time delay switch
earth fault setting
3. earth fault setting area 4. earth fault setting (Io>) 5. earth fault setting time delay (to>) 6. inrush current delay 7. tripping curve scheme
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 5
2. use and settings (cont'd)
phase protection (VIP30 and VIP35)
1. phase overcurrent setting area
All information concerning the phase overcurrent setting is grouped together in the upper half of the front panel. The section numbers detailed on this page relate to the numbering on the drawings shown on pages 4 & 5.
2. phase overcurrent setting (Is)
Time-delayed tripping of the phase protection takes place at 1.2 x Is. According to the range used on the CT, the setting current is adjustable from 8A to 80A or from 20A to 200A; The scale label inserted should match the CT and range selected.
earth fault protection (VIP 35)
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 6
3. earth fault setting area
All information concerning earth fault settings are grouped together in the lower half of the front panel. The section numbers detailed on this page relate to the numbering on the drawing shown on page 5.
F
4. earth fault setting Io>
The setting is made directly in MV amperes.
5. earth fault setting time delay
The earth fault protection time delay is set in seconds.
When the circuit breaker closes, energizing of the MV/LV transformer may generate aperiodic inrush currents with a DC component that momentarily saturates the magnetic cores of the VIP35 CT’s. Because of this, each CT gives an erroneous result and the sum of the phase currents (at the CT secondary windings) is no longer zero. There is false earth fault detection that may cause tripping of the earth fault protection. This is especially critical when the setting and time delay settings are low.
6. inrush current delay
This selector switch starts up the inrush current delay (1s). The time delay prevents tripping by the earth protection when the VIP35 is energized during closing of the circuit breaker. The time delay is only active for the earth protection and has no effect on tripping by the phase protection. n in off position: The inrush current delay is not activated. The earth fault protection operates according to the setting of the selector switch (5). n in on: position The inrush current delay is activated. In this case: - when the VIP35 is energized, and the circuit breaker closes, tripping by the earth protection is delayed by 1 second. - when the VIP35 has been supplied for more than a second, the earth protection is time-delayed according to the setting (5).
F If the time delay settings are
below the values indicated in the chart below, start up the inrush current delay: Io> setting to> time delay 0.8 to 0.9 x Ia 0.2 s 0.6 to 0.8 x Ia 0.3 s 0.4 to 0.6 x Ia 0.4 s 0.2 to 0.4 x Ia 0.5 s Ia = rated current of the transformer to be protected
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 7
2. use and settings (cont'd)
other functions
front sensor 200/1 S1, S2 to be used reverse sensor: 500/1 S1, S3 to be used
a. setting scale label
n The label indicates the range for the phase overcurrent and earth fault primary amp settings. It is inserted from the top, behind the transparent part of the front panel. The label is reversible and is printed with the 200/1A range on one side, and the 500/1A range on the other.
c. VAP6 test plug
The test plug is exclusively designed for connection of the VAP6 which is used for fast, simplified relay testing. The operation may be carried out while the relay is operating since the VAP6 and VIP30/35 provide the possibility of testing with inhibition of circuit breaker tripping.
Is
18 22 28 15 12 10 36 46 56 8 80 68 (A)
Is
45 37 30 25 20
55 70 90 115 140 170 200 (A)
b. current transformer used and wiring
The text is printed on the setting scale label. It indicates which secondary winding of the Current Transformer is to be used in accordance with the chosen range. When the label is in position in the slot, the text is hidden by and opaque zone. It is not visible to the user. F also refer to the "Current Transformer and operating ranges" chapter.
Io> 30
25 20 15 12 10 120 (A)
Io>
38 48 60 80 100 62 75 95 50 120 37 150 30 200 25 250 300 (A)
- e.g. VIP35 setting scale label -
- testing of the VIP30/35 using the VAP6 -
d. minimum time delay switch
n The circular opening on the front facia gives access to a switch which is used to time delay the tripping order by at least 25 ms. The time delay may be started up to prevent the circuit breaker from breaking at the beginning of the asymmetrical phase in the event of a strong fault. n It should or should not be started up, depending on the type of circuit breaker. The user does not have access to the time delay since the opening is hidden by the setting scale label.
- how to insert label
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 8
3. current transformers
Current transformers
To obtain the performances indicated, the VIP30 and VIP35 must be used with the current transformers supplied on the Ringmaster range. The relay/CT assembly must be used together to comply with the technical characteristics indicated, in particular: - operation across the range - tripping time - accuracy - short-circuit performance It is compulsory for the CT’s of each of the phases to be of the same type.
Current transformer
S3 S2 S1
Wire the secondary winding according to the desired operating range: range ratio wiring 8A-80A 200/1 S1-S2 20A-200A 500/1 S1-S3 The secondary sensor has nonactive turns, the resistance of which protects the VIP30/35 in the event of a short-circuit in the MV network
CT’s specified for VIP30/35:
500/1 200/1
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 9
4. connection scheme
VIP30 wiring with Current Transformers
1 VIP30 2 3
P1 CT
S3 S2 S1
5 6 7 8 9 10 L1 L2 L3
P1 CT P1 CT
S3 P2 S2
The schemes opposite are given for the wiring of S3. Wire the secondary winding of the CT (S2 or S3) according to the desired operating range: range wiring 8A-80A S1-S2 20A-200A S1-S3
S3 P2 S2
S1
P2
S1
F
do not earth the CT secondary windings.
14 11 4 1 MITOP 0V
+
2 3
VIP35 wiring with Current Transformers
1 2 3 VIP35
P1 CT
S3 S2
5 6 7 L2 8 9 10 L1 L3
P1 CT P1 CT S2 P2 S1 S3 P2
S3 P2 S2 S1
S1
CSH30 1
2
12 Io 13 14 11 4 1 0V
MITOP
+
2 3
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 10
5. assembly and wiring
assembly of CSH30 core balance CT on VIP35
F
CSH30 core Balance CT ‘A’
- view on A G
n Mount the CSH30 core balance CT on the back of the casing using the 2 screws (G) so that the "Merlin Gerin, CSH30, 3123973, P2" marking is on the visible side. Tighten the 2 screws moderately. In order to measure the residual current, the wires of the S1 secondary windings of the 3 current transformers are inserted through the CSH30 core balance CT and connected to the terminal rail. n Connect (F) outputs 1 and 2 of the CSH30 core balance CT to terminals 13 and 12 of the VIP35. The CSH30 core balance CT output is a low level signal so the length of the 2 wires should never be more than 15 cm. Terminal 3 of the CSH30 core balance CT output connector is not used. n the CSH30 and its 2 thermoplastic (G) ∅3 screws are supplied with the VIP35.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 11
5. assembly and wiring (cont'd)
installation of setting scale label
Left position: Minimum time delay is not activated Right position: Minimum time delay is activated
n check the position of the minimum time delay switch (d). The VIP30/35 is supplied with the time delay deactivated.
d
M
d
n slide the setting scale label into position behind the transparent part of the front face. F refer to the section entitled "choice of the setting scale label". n make sure that the information given at the top of the label (M) matches the wiring of the sensor (S1-S2 or S1-S3). This information is hidden when the label is in position. n make sure that it is pushed right to the bottom of the slot. n to remove the label, use the hole in the top, if necessary with the help of the tip of a pencil or a screwdriver.
wiring
Connection is made on the back of the VIP30/35 to 6.35 mm terminal rail connectors.
L
VIP30/35 wiring with Current Transformers
n connect the 3 CT’s according to the "connection scheme" chapter. n for the VIP35, insert the S1 cable of each of the 3 sensors into the CSH30 core balance CT (J) before connecting them to their respective terminals. Insert the 3 S1 cables through the same side of the core balance CT. n attach the cables of the unused secondary windings (K) to the plastic clips (L) to prevent them from coming in contact with another conductor or a metal frame. The conductors are energized in operation and should not be left accessible.
K 1 14
J J S1
S1 S2 S3
CRc
- wiring of VIP35 and CT’s.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 12
5. assembly and wiring (cont'd)
choice of setting scale label
for VIP 30 for VIP 35
front
reverse
front
reverse sensor: 500/1 S1,S3 to be used
sensor: 200/1 S1,S2 to be used
sensor: 500/1 S1,S3 to be used
sensor: 200/1 S1,S2 to be used
Is18 22 28
15 12 10 8 80 (A) 68 36 46 56
Is
45 37 30 25 20 55 70 90 115 140 170 200 (A)
Is18 22 28
15 12 10 8 80 (A) 68 36 46 56
Is
45 37 30 25 20 55 70 90 115 140 170 200 (A)
Io>30
25 20 15 12 10 120 (A)
Io>
38 48 60 80 100 62 75 95 50 120 37 150 30 200 25 300 250 (A)
S1-S2 wiring
S1-S3 wiring
S1-S2 wiring
S1-S3 wiring
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 13
6. technical characteristics
phase protection operating setting % of pick-up storage time earth protection (VIP35) setting time delay % of pick-up storage time inrush current delay general characteristics steady thermal resistance
1.2 Is ± 10% 93 % 20 ms
notes 1 2
± 10 % or 0/+2 A ± 10 % or ± 20 ms 93% 20 ms 1 s ± 10%
notes 6 4
if activated
110 A 270 A 25 kA/1s 25 kA/0,3s 50 Hz ± 10%, 60 Hz ± 10% -25° C to +70° C -40°C to +85°C 0.6 kg mitop 993250 standard IEC 60068-2-1 IEC 60068-2-1 IEC 60068-2-2 IEC 60068-2-2 IEC 60068-2-14 IEC 60068-2-3 IEC 60068-2-52 standard IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 EN 60529 IEC 60695-2-1 standard IEC 60255-5 IEC 60255-22-1 IEC 60255-22-4 IEC 61000-4-5 IEC 60255-22-2 IEC 60255-22-3
with CT sensor, 8-80A range with CT sensor, 20-200A range with CT sensor, 8-80A range with CT sensor, 20-200A range
1 sec thermal resistance
operating frequency operating temperature storage temperature weight release climatic resistance low temperature operation low temperature storage high temperature operation high temperature storage fast changes in temperature operation in damp heat salt spray mechanical resistance vibrations shocks and jolts earthquakes enclosure protection index fire resistance electrical resistance 1.2/50 µs impulse voltage 1 MHz dampened oscillating wave rapid transient bursts 1.2/50(8-20 µs) hybrid wave electrostatic discharge HF electromagnetic field
cable length < 2m with 1 mm² severity -25°C, 16h -40°C, 96h +70°C, 16h +85°C, 96h -25°C to +70°C, 5 cycles 56 days, 93% RH severity 1 severity class 2 class 2 class 2 IP54, (cover closed) 650°C severity 5 kV, note 3 2,5 kV cm, note 3 1 kV dm 4 kV cm and dm, 5 kHz burst, note 3 2 kV, 42 ohms, note 3 8 kV in air, 6 kV on contact 30V/m not modulated, 27 to 1000 MHz
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 14
6. technical characteristics (cont'd)
phase protection tripping curve
n The curves opposite indicate the typical, minimum and maximum values of the VIP 30/35 phase protection tripping time. The current is given as multiples of the setting current (Is). The time is given in seconds. n a few characteristic times: current t min t max 2 Is 12 s 17 s 5 Is 1.9 s 3.8 s 10 Is 90 ms 0.17 s 20 Is 14 ms 26 ms 30 Is 10 ms 20 ms F notes 4, 5 n operating setting: min max setting 1.32 Is typ
s 100
t typ 22 s 3s 0.13 s 20 ms 15 ms
10
1
1.08 Is 1.2 Is
F note 1
0.1
max typ
0.01 1,2Is 0 5 10 15 20 25
min
30 I/Is
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 15
6. technical characteristics (cont'd)
notes
1. When the VIP30/35 is used with Current Transformers, the 8-80A range, and for I < 20A, the accuracy is derated in accordance with the following characteristics: - phase operating setting: 1.2Is -10% +30%. The tolerance is mainly due to the non-linearity of the CT’s for low currents. The inaccuracy can reach the limit above if the relay is only supplied by one phase. This may be the case during single-phase injection testing. 2. Given for the operating setting at 1.2 Is 3. Not applicable to the test plug 4. The times are measured for a phase-to-phase fault which appears when the relay is already supplied (prior presence of a current in the network that is greater than the minimum operating current). In the event of closing in the presence of a fault, the tripping times may be increased by 20ms. The times indicated do not include the mitop response time since it depends on the circuit breaker (the no load mitop tripping time is less than 5 ms). 5. The tripping times are measured for a sinusoidal current. 6. When the VIP30/35 is used with Current Transformers, and for I < 30A, the accuracy is derated in accordance with the following characteristics: - earth protection setting: ± 10 % or 0/+6 A The tolerance is mainly due to the non-linearity of the CT’s for low currents. The inaccuracy can reach the limit above if the relay is only supplied by one phase. This may be the case during single-phase injection testing.
dimensions
22 179 48 80
*
139
127
6
159
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 16
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 17
7. testing of the VIP30/35 and use of the VAP6
Overview of the VAP6
external mitop
+
on test in progress trip phase overcurrent battery test
-
The VAP6 is a portable unit which is connected to the VIP30/35 to carry out simplified testing. The test can be carried out in the following two cases: - the VIP30/35 is already powered up by the CT’s. - the VIP30/35 is not supplied by the CT’s. In this case, the VAP6 batteries supply power to the relay. The test consists of: - injecting a current to simulate a phase fault. - injecting a current to simulate an earth fault (VIP35). - checking tripping. F refer to the description of the test in the section entitled "test sequence" F the VAP6 is supplied by batteries. Therefore the parts of the VIP30/35 that run on AC current are not checked using this method (input and supply circuits).
indicators
n on: indicates that the batteries are operating. Also lights up when the battery test is carried out by pressing "battery test". n test in progress: confirms sending of the test current to the VIP30/35. n trip: it lights up when the VIP30/35 sends a tripping order (whether or not the circuit breaker is inhibited).
trip inhibition
earth fault
"external mitop" output
This feature may be used to connect an external MITOP trip coil which could be used to operate a timer etc. The external coil is triggered at the same time as the circuit breaker MITOP. The trip inhibit button does not affect the external coil.
earth fault test phase overcurrent
VIP30 VIP35 VIP300 VIP50 VIP37 VIP11,11R VIP12R VIP13 VIP17 VIP200,201
trip trip inhibition circuit breaker mitop external mitop
test phase overcurrent
circuit breaker mitop
batteries
n the batteries are normally deactivated and are automatically activated when the VAP6 is connected to the VIP30/35. They are activated in the following cases: - pressing the "battery test" button. - direct connection to the VIP30/35. n to install or change the batteries, open the unit by removing the 4 screws on the bottom of the unit. Be sure to use the correct polarities.
VAP 6 - facia of the VAP6
push-buttons
n battery test: if the batteries are healthy, the "on" indicator lights up when the button is pressed. n phase overcurrent: Sends the phase overcurrent test current, which is equivalent to 20 times the setting current Is. n earth fault: Sends the earth fault test current. The current is equivalent to a current greater than the highest of the Io> settings. n trip inhibition: By pressing and holding this button down the relay can be tested with the VAP6 without tripping the circuit breaker. This facility will inhibit the circuit breaker tripping even if a real fault occurs during the test.
technical characteristics
supply: batteries weight: dimensions: 3 x 9V 6LR61 0.45 kg 93x157x45
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 18
7. testing of the VIP30/35 and use of the VAP6 (cont'd)
VAP6 test sequence
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 19
n press the "phase overcurrent" button to send the phase protection test current. - continue pressing the button throughout the duration of the current. - the VAP6 "test in progress" indicator lights up to confirm the sending of the current to the VIP30/35 relay. __________________________________________________________________________________________ - the VAP6 red "trip" indicator lights n connect the VAP6 to VIP30 / VIP test the "VAP6 35 protectionto indicate that the relay has2001 20 up relays – version 002 / January plug". The VAP6 batteries are tripped. The test may be carried out with or without the relay energised by the Ringmaster current transformers, and all the relay settings are effective. During the test, the relay remains operational and will give a tripping order in the event of a fault, unless the "trip inhibition" button is pressed.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 21
8. Commissioning Ringmaster with VIP 30/35
Factory tests:
All Ringmaster panel types are fully tested before leaving the factory. These tests include the whole protection system including current transformers, wiring harness, relay, trip coil and the circuit breaker itself using primary injection to energise the system. Tripping tests are carried out using different settings of the IDMT and DT curves available on the relay. The tripping times are measured with a chronometer and its accuracy is verified against the theoretical times calculated.
Reduced commissioning:
Since the system is fully tested it is only necessary to prove the relay on site at the service settings, therefore reducing commissioning time to a minimum. Once the switchgear has been installed and cabled up, it is impractical or sometimes impossible to carry out primary injection tests. It is suggested that for commissioning and maintenance purposes either of the following two methods can be used. 1. Simple trip test using the VAP6 test unit (described previously). 2. Secondary injection using standard equipment with an output filter.
Secondary injection:
Testing using secondary injection is used to test the following parts of the protection system: n The electronic circuit. n The integrity of the power supply of the VIP 30/35. n The link to the mitop trip coil and also the circuit breaker mechanical tripping mechanism. n The integrity of the switches on the front panel to ensure they give the correct tripping times for the curves selected.
Caution:
n The ‘MITOP’ trip coil must be used only in conjuction with the VIP relay. n Voltage withstand testing of the auxiliary and control circuits at 2000V for 1 minute should never be carried out without disconnecting the MITOP trip coil or the VIP relay. n Secondary injection facilities are provided on the terminal rail in the LV pilot cable box. n No external connections should be made to the VIP30/35 or the MITOP trip coil.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 22
Test set connections:
The injection set is connected to the VIP 30/35 relay without disconnecting the CT’s. This is done via the sockets on the terminal rail located in the LV compartment.
Phase overcurrent connections:
To test the overcurrent protection the connection should be made across two CT’s (C11-C31. C31-C51, C51-C11).
Earth fault connections:
To test the earth fault protection, the connection should be made across one CT (C11-C10, C31-C30, C51-C50). These numbers should be cross checked with the relevant circuit breaker schematic diagram. Terminals L1 and L4 (not shown above - see Ringmaster selection guide) give access to a normally open contact, which is normally openwhen the CB is in the open position. This can be used to connect a timing device to measure the opening time of the relay and circuit breaker. The type of test plug used to connect to the DIN rail connectors is a standard 4mm 10A test plug. Note: When using a secondary injection set with VIP 30/35 a filter (e.g. Foster SF30) should be used to improve the wave form. If a filter is not used the operating time of the relay may not follow the theoretical operating times.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 23
8. Commissioning Ringmaster with VIP 30/35
89L
52
89R
C11
5 6
VIP 30 IDMT RELAY
L3
C110 C10 C31
7 8 9 10 L1 L2
51
C130 C30 C51
C150 C50
14 11 MITOP COIL K8 4
K8
K11 K11 K11 K11
1
+
0v
2
K9 ITC K7
K9
K9
K9
3
K7
Schematic diagram for VIP 30
89L
52
89R
C11
5 6
VIP 35 IDMT RELAY
L3
C110 C10 C31
7 8 9 10 L1 L2
51/51N
C130 C30 C51
C150 C50 1 C90 REMOVABLE EARTH LINK MITOP COIL K8 K8 + K9 ITC K7 K7 K9 K9 K9 2 12 13 14 11 4 1 2
0v
K11
K11
K11
K11
3
Schematic diagram for VIP 35
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 24
8. Commissioning Ringmaster with VIP 30/35
Recommended test procedure for secondary injection:
The test procedure outlined here is only a guide and may need modifying to suit the different test sets available. The manufacturers instructions should be read before attempting to secondary inject the VIP30/35 relay. The VIP30/35 relays can be secondary injected like any conventional 1A relay, therefore the output recommended for 1A relays should be used. Calculate the secondary current to be injected from the equivalent primary current, taking into account the CT’s used . With the VIP 30/35 connected so as to present the correct burden, the following test can be carried out:
1. Setting check:
Set the current to be injected ( a true RMS ammeter should be used to measure the current). The CB should then be closed and the counter/timer reset. The current should then be applied. When the CB has operated, the applied current should be turned off if not done automatically. The time shown on the counter display includes the operating time of the circuit breaker (approx. 90ms) The actual relay operating time can then be calculated by subtracting this time from the counter reading.
-
-
-
RN2c / RE2c
CT Ratio 200/1A
RN2c / RE2c
CT Ratio 500/1A
Minimum operating current = 20A Secondary injected current 40mA 50mA 60mA 75mA 90mA 110mA 140mA 180mA 230mA 280mA 340mA 400mA Equivalent Primary current 8A 10A 12A 15A 18A 22A 28A 36A 46A 56A 68A 80A
Minimum operating current = 80A Secondary Equivalent Injected Primary current current 40mA 50mA 60mA 74mA 90mA 110mA 140mA 180mA 230mA 280mA 340mA 400mA 20A 25A 30A 37A 45A 55A 70A 90A 115A 140A 170A 200A
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 25
8. Commissioning Ringmaster with VIP 30/35
Commissioning test record:
Secondary injection of Merlin Gerin VIP30/ VIP 35 self powered overcurrent / earth fault relay
Customer Contact Ref. Relay type Current transformers
Site Panel Relay Serial No.
ü
tick as appropriate
o 500/1A o
200/1A
Note : Ensure CT connections are made for the appropriate ratio and that the Scale labels are inserted correctly to match the ratio selected. Indicate on the diagram below actual settings. Carry out tests and record the results in the table provided.
for VIP 30
for VIP 35
front
reverse
front
reverse sensor: S1,S3 to be used
sensor: S1,S2 to be used
sensor: S1,S3 to be used
sensor: S1,S2 to be used
Is18 22 28
15 12 10 8 80 (A) 68 36 46 56
Is
45 37 30 25 20 55 70 90 115 140 170 200 (A)
Is18 22 28
15 12 10 8 80 (A) 68 36 46 56
Is
45 37 30 25 20 55 70 90 115 140 170 200 (A)
Io>30
25 20 15 12 10 120 (A)
Io>
38 48 60 80 100 62 75 95 50 120 37 150 30 200 25 300 250 (A)
S1-S2 wiring
S1-S3 wiring
S1-S2 wiring
S1-S3 wiring
phase overcurrent sensors:
200/1 S 1,S2 to be used
VIP 30
phase overcurrent
VIP 35
sensors: 200/1 S1, S2 to be used
Is
18 22 28 15 12 10 8 80 68 (A) 1.2Is 36 46 56
Is
18 22 28 36 15 12 46 10 56 8 80 68 (A) 1.2Is
to>
VAP6 test plug
Io>
25 30 38 20 48 15 60 12 80 10 120 100 on off inrush current delay 0.3 0.35 0.4 to> 0.25 0.5 0.2 0.6 0.7 0.15 0.1 1 0.8 (s)
VAP6 test plug
Io>
earth fault
(A)
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 26
8. Commissioning Ringmaster with VIP 30/35
Commissioning test record:
1. Operating time and curve check at final settings.
Inject the test current into the relay for each phase in turn and note the operating times.
2.
Instantaneous trip check EF
Inject the appropriate test current into the relay and ensure the correct instantaneous response.
Phase A-B 1. Operating time at final selected setting 2. Current level to trip EF (VIP35 only)
Phase B-C
Phase C-A
EF
3.
Commissioning test record
Check test facility using VAP6
o
Date .
Commissioning engineer
Customer witness
Date
.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 27
version 002/ January 2001
contents
1. features of the VIP30 / VIP35...................................................................3 2. use and settings ........................................................................................4 3. current transformers .................................................................................8 4. connection scheme ..................................................................................9 5. assembly and wiring ................................................................................10 6. technical characteristics ..........................................................................13 7 testing of the VIP30/35 and use of the VAP6.........................................16 8. commissioning Ringmaster with VIP30/35 ........................................18
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 2
1. features of the VIP30 and VIP35
self-powered protection relays
Mitop
Current transformers
n CT’s 500/200/1 The VIP30/35 relays must be used with the CT’s to obtain the specified characteristics. - The Current Transformers have 2 ranges; according to the range used, the setting current is adjustable from 8A to 80A or from 20A to 200A. - The cross-section of the core and the resistance of the winding are adapted to protect the VIP30/35 in the event of a short-circuit.
VIP30 VIP35
simplified schematic of wiring connections
t
The VIP30 and VIP35 relays are designed for use in distribution networks, mainly in MV/LV substations in which they provide protection for upstream transformers. They are self-powered relays requiring no external DC power source or batteries, making them the ideal solution for location in remote areas or where auxiliary supplies are not available. n The VIP30 provides protection against phase-to-phase faults. n The VIP35 provides protection against phase-to-phase faults and earth faults.
description
n The VIP30 and VIP35 relays are mounted in a polycarbonate injected casing which protects them against dripping water and dust. The front is protected by a transparent cover fitted with a sealing joint. The cover may be leadsealed to prohibit access to the settings. n Rotating selector switches are used for setting. The phase setting current and earth fault setting current are set directly in amperes. This means that the scale on the front must be adapted to suit the range used on the CT. This is done by positioning a "setting scale label" on the relay at the time of testing/commissioning. n The connections are made on the back of the relay.
phase protection
Phase protection uses an IDMT setting that operates at 1.2 times the setting current (Is). Phase protection on the VIP30 and VIP35 are the same.
1,2 Is
I
Phase protection curve, VIP30/35
earth protection
t
to>
Protection against earth faults operates by measurement of residual current based on the sum of the CT secondary currents. Measurement is carried out by a CSH30 core balance CT mounted on the back of the VIP35 unit. Earth protection operates with definite time; the setting and time delay are adjustable.
Io> I
Earth fault protection curve for VIP 35
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 3
2. use and settings
VIP30 relay front panel
1 2
phase overcurrent
VIP 30
sensors: 200/1 S1,S2 to be used
a
Is
18 22 28 36 15 12 10 46 56 8 80 68 (A) 1.2Is
b
d
VAP6 test plug
c
- VIP30 front panel
phase overcurrent setting
1. phase overcurrent setting area 2. phase overcurrent setting (Is)
other functions
a. setting scale label (reversible) b. current transformer and range info. c. VAP6 test plug d. minimum time delay switch
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 4
2. use and settings (cont'd)
VIP35 relay front panel
1 2
phase overcurrent
VIP 35
sensors: 200/1 S1, S2 to be used
a
Is
18 22 28 36 15 12 10 46 56 8 80 68 (A) 1.2Is
b
to>
d
Io>
20 48 15 60 12 80 10 120 100 25 30 38 on off inrush current delay to> 0.3 0.35 0.4 0.25 0.5 0.2 0.6 0.7 0.15 0.1 1 0.8 (s )
VAP6 test plug
c
Io>
earth fault
(A)
- VIP35 facia layout
3
4
6
5
7
phase overcurrent setting
1. phase overcurrent setting area 2. phase overcurrent setting Is
other functions
a. setting scale label (reversible) b. current transformer and range information. c. VAP6 test plug d. minimum time delay switch
earth fault setting
3. earth fault setting area 4. earth fault setting (Io>) 5. earth fault setting time delay (to>) 6. inrush current delay 7. tripping curve scheme
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 5
2. use and settings (cont'd)
phase protection (VIP30 and VIP35)
1. phase overcurrent setting area
All information concerning the phase overcurrent setting is grouped together in the upper half of the front panel. The section numbers detailed on this page relate to the numbering on the drawings shown on pages 4 & 5.
2. phase overcurrent setting (Is)
Time-delayed tripping of the phase protection takes place at 1.2 x Is. According to the range used on the CT, the setting current is adjustable from 8A to 80A or from 20A to 200A; The scale label inserted should match the CT and range selected.
earth fault protection (VIP 35)
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 6
3. earth fault setting area
All information concerning earth fault settings are grouped together in the lower half of the front panel. The section numbers detailed on this page relate to the numbering on the drawing shown on page 5.
F
4. earth fault setting Io>
The setting is made directly in MV amperes.
5. earth fault setting time delay
The earth fault protection time delay is set in seconds.
When the circuit breaker closes, energizing of the MV/LV transformer may generate aperiodic inrush currents with a DC component that momentarily saturates the magnetic cores of the VIP35 CT’s. Because of this, each CT gives an erroneous result and the sum of the phase currents (at the CT secondary windings) is no longer zero. There is false earth fault detection that may cause tripping of the earth fault protection. This is especially critical when the setting and time delay settings are low.
6. inrush current delay
This selector switch starts up the inrush current delay (1s). The time delay prevents tripping by the earth protection when the VIP35 is energized during closing of the circuit breaker. The time delay is only active for the earth protection and has no effect on tripping by the phase protection. n in off position: The inrush current delay is not activated. The earth fault protection operates according to the setting of the selector switch (5). n in on: position The inrush current delay is activated. In this case: - when the VIP35 is energized, and the circuit breaker closes, tripping by the earth protection is delayed by 1 second. - when the VIP35 has been supplied for more than a second, the earth protection is time-delayed according to the setting (5).
F If the time delay settings are
below the values indicated in the chart below, start up the inrush current delay: Io> setting to> time delay 0.8 to 0.9 x Ia 0.2 s 0.6 to 0.8 x Ia 0.3 s 0.4 to 0.6 x Ia 0.4 s 0.2 to 0.4 x Ia 0.5 s Ia = rated current of the transformer to be protected
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 7
2. use and settings (cont'd)
other functions
front sensor 200/1 S1, S2 to be used reverse sensor: 500/1 S1, S3 to be used
a. setting scale label
n The label indicates the range for the phase overcurrent and earth fault primary amp settings. It is inserted from the top, behind the transparent part of the front panel. The label is reversible and is printed with the 200/1A range on one side, and the 500/1A range on the other.
c. VAP6 test plug
The test plug is exclusively designed for connection of the VAP6 which is used for fast, simplified relay testing. The operation may be carried out while the relay is operating since the VAP6 and VIP30/35 provide the possibility of testing with inhibition of circuit breaker tripping.
Is
18 22 28 15 12 10 36 46 56 8 80 68 (A)
Is
45 37 30 25 20
55 70 90 115 140 170 200 (A)
b. current transformer used and wiring
The text is printed on the setting scale label. It indicates which secondary winding of the Current Transformer is to be used in accordance with the chosen range. When the label is in position in the slot, the text is hidden by and opaque zone. It is not visible to the user. F also refer to the "Current Transformer and operating ranges" chapter.
Io> 30
25 20 15 12 10 120 (A)
Io>
38 48 60 80 100 62 75 95 50 120 37 150 30 200 25 250 300 (A)
- e.g. VIP35 setting scale label -
- testing of the VIP30/35 using the VAP6 -
d. minimum time delay switch
n The circular opening on the front facia gives access to a switch which is used to time delay the tripping order by at least 25 ms. The time delay may be started up to prevent the circuit breaker from breaking at the beginning of the asymmetrical phase in the event of a strong fault. n It should or should not be started up, depending on the type of circuit breaker. The user does not have access to the time delay since the opening is hidden by the setting scale label.
- how to insert label
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 8
3. current transformers
Current transformers
To obtain the performances indicated, the VIP30 and VIP35 must be used with the current transformers supplied on the Ringmaster range. The relay/CT assembly must be used together to comply with the technical characteristics indicated, in particular: - operation across the range - tripping time - accuracy - short-circuit performance It is compulsory for the CT’s of each of the phases to be of the same type.
Current transformer
S3 S2 S1
Wire the secondary winding according to the desired operating range: range ratio wiring 8A-80A 200/1 S1-S2 20A-200A 500/1 S1-S3 The secondary sensor has nonactive turns, the resistance of which protects the VIP30/35 in the event of a short-circuit in the MV network
CT’s specified for VIP30/35:
500/1 200/1
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 9
4. connection scheme
VIP30 wiring with Current Transformers
1 VIP30 2 3
P1 CT
S3 S2 S1
5 6 7 8 9 10 L1 L2 L3
P1 CT P1 CT
S3 P2 S2
The schemes opposite are given for the wiring of S3. Wire the secondary winding of the CT (S2 or S3) according to the desired operating range: range wiring 8A-80A S1-S2 20A-200A S1-S3
S3 P2 S2
S1
P2
S1
F
do not earth the CT secondary windings.
14 11 4 1 MITOP 0V
+
2 3
VIP35 wiring with Current Transformers
1 2 3 VIP35
P1 CT
S3 S2
5 6 7 L2 8 9 10 L1 L3
P1 CT P1 CT S2 P2 S1 S3 P2
S3 P2 S2 S1
S1
CSH30 1
2
12 Io 13 14 11 4 1 0V
MITOP
+
2 3
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 10
5. assembly and wiring
assembly of CSH30 core balance CT on VIP35
F
CSH30 core Balance CT ‘A’
- view on A G
n Mount the CSH30 core balance CT on the back of the casing using the 2 screws (G) so that the "Merlin Gerin, CSH30, 3123973, P2" marking is on the visible side. Tighten the 2 screws moderately. In order to measure the residual current, the wires of the S1 secondary windings of the 3 current transformers are inserted through the CSH30 core balance CT and connected to the terminal rail. n Connect (F) outputs 1 and 2 of the CSH30 core balance CT to terminals 13 and 12 of the VIP35. The CSH30 core balance CT output is a low level signal so the length of the 2 wires should never be more than 15 cm. Terminal 3 of the CSH30 core balance CT output connector is not used. n the CSH30 and its 2 thermoplastic (G) ∅3 screws are supplied with the VIP35.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 11
5. assembly and wiring (cont'd)
installation of setting scale label
Left position: Minimum time delay is not activated Right position: Minimum time delay is activated
n check the position of the minimum time delay switch (d). The VIP30/35 is supplied with the time delay deactivated.
d
M
d
n slide the setting scale label into position behind the transparent part of the front face. F refer to the section entitled "choice of the setting scale label". n make sure that the information given at the top of the label (M) matches the wiring of the sensor (S1-S2 or S1-S3). This information is hidden when the label is in position. n make sure that it is pushed right to the bottom of the slot. n to remove the label, use the hole in the top, if necessary with the help of the tip of a pencil or a screwdriver.
wiring
Connection is made on the back of the VIP30/35 to 6.35 mm terminal rail connectors.
L
VIP30/35 wiring with Current Transformers
n connect the 3 CT’s according to the "connection scheme" chapter. n for the VIP35, insert the S1 cable of each of the 3 sensors into the CSH30 core balance CT (J) before connecting them to their respective terminals. Insert the 3 S1 cables through the same side of the core balance CT. n attach the cables of the unused secondary windings (K) to the plastic clips (L) to prevent them from coming in contact with another conductor or a metal frame. The conductors are energized in operation and should not be left accessible.
K 1 14
J J S1
S1 S2 S3
CRc
- wiring of VIP35 and CT’s.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 12
5. assembly and wiring (cont'd)
choice of setting scale label
for VIP 30 for VIP 35
front
reverse
front
reverse sensor: 500/1 S1,S3 to be used
sensor: 200/1 S1,S2 to be used
sensor: 500/1 S1,S3 to be used
sensor: 200/1 S1,S2 to be used
Is18 22 28
15 12 10 8 80 (A) 68 36 46 56
Is
45 37 30 25 20 55 70 90 115 140 170 200 (A)
Is18 22 28
15 12 10 8 80 (A) 68 36 46 56
Is
45 37 30 25 20 55 70 90 115 140 170 200 (A)
Io>30
25 20 15 12 10 120 (A)
Io>
38 48 60 80 100 62 75 95 50 120 37 150 30 200 25 300 250 (A)
S1-S2 wiring
S1-S3 wiring
S1-S2 wiring
S1-S3 wiring
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 13
6. technical characteristics
phase protection operating setting % of pick-up storage time earth protection (VIP35) setting time delay % of pick-up storage time inrush current delay general characteristics steady thermal resistance
1.2 Is ± 10% 93 % 20 ms
notes 1 2
± 10 % or 0/+2 A ± 10 % or ± 20 ms 93% 20 ms 1 s ± 10%
notes 6 4
if activated
110 A 270 A 25 kA/1s 25 kA/0,3s 50 Hz ± 10%, 60 Hz ± 10% -25° C to +70° C -40°C to +85°C 0.6 kg mitop 993250 standard IEC 60068-2-1 IEC 60068-2-1 IEC 60068-2-2 IEC 60068-2-2 IEC 60068-2-14 IEC 60068-2-3 IEC 60068-2-52 standard IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 EN 60529 IEC 60695-2-1 standard IEC 60255-5 IEC 60255-22-1 IEC 60255-22-4 IEC 61000-4-5 IEC 60255-22-2 IEC 60255-22-3
with CT sensor, 8-80A range with CT sensor, 20-200A range with CT sensor, 8-80A range with CT sensor, 20-200A range
1 sec thermal resistance
operating frequency operating temperature storage temperature weight release climatic resistance low temperature operation low temperature storage high temperature operation high temperature storage fast changes in temperature operation in damp heat salt spray mechanical resistance vibrations shocks and jolts earthquakes enclosure protection index fire resistance electrical resistance 1.2/50 µs impulse voltage 1 MHz dampened oscillating wave rapid transient bursts 1.2/50(8-20 µs) hybrid wave electrostatic discharge HF electromagnetic field
cable length < 2m with 1 mm² severity -25°C, 16h -40°C, 96h +70°C, 16h +85°C, 96h -25°C to +70°C, 5 cycles 56 days, 93% RH severity 1 severity class 2 class 2 class 2 IP54, (cover closed) 650°C severity 5 kV, note 3 2,5 kV cm, note 3 1 kV dm 4 kV cm and dm, 5 kHz burst, note 3 2 kV, 42 ohms, note 3 8 kV in air, 6 kV on contact 30V/m not modulated, 27 to 1000 MHz
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 14
6. technical characteristics (cont'd)
phase protection tripping curve
n The curves opposite indicate the typical, minimum and maximum values of the VIP 30/35 phase protection tripping time. The current is given as multiples of the setting current (Is). The time is given in seconds. n a few characteristic times: current t min t max 2 Is 12 s 17 s 5 Is 1.9 s 3.8 s 10 Is 90 ms 0.17 s 20 Is 14 ms 26 ms 30 Is 10 ms 20 ms F notes 4, 5 n operating setting: min max setting 1.32 Is typ
s 100
t typ 22 s 3s 0.13 s 20 ms 15 ms
10
1
1.08 Is 1.2 Is
F note 1
0.1
max typ
0.01 1,2Is 0 5 10 15 20 25
min
30 I/Is
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 15
6. technical characteristics (cont'd)
notes
1. When the VIP30/35 is used with Current Transformers, the 8-80A range, and for I < 20A, the accuracy is derated in accordance with the following characteristics: - phase operating setting: 1.2Is -10% +30%. The tolerance is mainly due to the non-linearity of the CT’s for low currents. The inaccuracy can reach the limit above if the relay is only supplied by one phase. This may be the case during single-phase injection testing. 2. Given for the operating setting at 1.2 Is 3. Not applicable to the test plug 4. The times are measured for a phase-to-phase fault which appears when the relay is already supplied (prior presence of a current in the network that is greater than the minimum operating current). In the event of closing in the presence of a fault, the tripping times may be increased by 20ms. The times indicated do not include the mitop response time since it depends on the circuit breaker (the no load mitop tripping time is less than 5 ms). 5. The tripping times are measured for a sinusoidal current. 6. When the VIP30/35 is used with Current Transformers, and for I < 30A, the accuracy is derated in accordance with the following characteristics: - earth protection setting: ± 10 % or 0/+6 A The tolerance is mainly due to the non-linearity of the CT’s for low currents. The inaccuracy can reach the limit above if the relay is only supplied by one phase. This may be the case during single-phase injection testing.
dimensions
22 179 48 80
*
139
127
6
159
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 16
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 17
7. testing of the VIP30/35 and use of the VAP6
Overview of the VAP6
external mitop
+
on test in progress trip phase overcurrent battery test
-
The VAP6 is a portable unit which is connected to the VIP30/35 to carry out simplified testing. The test can be carried out in the following two cases: - the VIP30/35 is already powered up by the CT’s. - the VIP30/35 is not supplied by the CT’s. In this case, the VAP6 batteries supply power to the relay. The test consists of: - injecting a current to simulate a phase fault. - injecting a current to simulate an earth fault (VIP35). - checking tripping. F refer to the description of the test in the section entitled "test sequence" F the VAP6 is supplied by batteries. Therefore the parts of the VIP30/35 that run on AC current are not checked using this method (input and supply circuits).
indicators
n on: indicates that the batteries are operating. Also lights up when the battery test is carried out by pressing "battery test". n test in progress: confirms sending of the test current to the VIP30/35. n trip: it lights up when the VIP30/35 sends a tripping order (whether or not the circuit breaker is inhibited).
trip inhibition
earth fault
"external mitop" output
This feature may be used to connect an external MITOP trip coil which could be used to operate a timer etc. The external coil is triggered at the same time as the circuit breaker MITOP. The trip inhibit button does not affect the external coil.
earth fault test phase overcurrent
VIP30 VIP35 VIP300 VIP50 VIP37 VIP11,11R VIP12R VIP13 VIP17 VIP200,201
trip trip inhibition circuit breaker mitop external mitop
test phase overcurrent
circuit breaker mitop
batteries
n the batteries are normally deactivated and are automatically activated when the VAP6 is connected to the VIP30/35. They are activated in the following cases: - pressing the "battery test" button. - direct connection to the VIP30/35. n to install or change the batteries, open the unit by removing the 4 screws on the bottom of the unit. Be sure to use the correct polarities.
VAP 6 - facia of the VAP6
push-buttons
n battery test: if the batteries are healthy, the "on" indicator lights up when the button is pressed. n phase overcurrent: Sends the phase overcurrent test current, which is equivalent to 20 times the setting current Is. n earth fault: Sends the earth fault test current. The current is equivalent to a current greater than the highest of the Io> settings. n trip inhibition: By pressing and holding this button down the relay can be tested with the VAP6 without tripping the circuit breaker. This facility will inhibit the circuit breaker tripping even if a real fault occurs during the test.
technical characteristics
supply: batteries weight: dimensions: 3 x 9V 6LR61 0.45 kg 93x157x45
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 18
7. testing of the VIP30/35 and use of the VAP6 (cont'd)
VAP6 test sequence
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 19
n press the "phase overcurrent" button to send the phase protection test current. - continue pressing the button throughout the duration of the current. - the VAP6 "test in progress" indicator lights up to confirm the sending of the current to the VIP30/35 relay. __________________________________________________________________________________________ - the VAP6 red "trip" indicator lights n connect the VAP6 to VIP30 / VIP test the "VAP6 35 protectionto indicate that the relay has2001 20 up relays – version 002 / January plug". The VAP6 batteries are tripped. The test may be carried out with or without the relay energised by the Ringmaster current transformers, and all the relay settings are effective. During the test, the relay remains operational and will give a tripping order in the event of a fault, unless the "trip inhibition" button is pressed.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 21
8. Commissioning Ringmaster with VIP 30/35
Factory tests:
All Ringmaster panel types are fully tested before leaving the factory. These tests include the whole protection system including current transformers, wiring harness, relay, trip coil and the circuit breaker itself using primary injection to energise the system. Tripping tests are carried out using different settings of the IDMT and DT curves available on the relay. The tripping times are measured with a chronometer and its accuracy is verified against the theoretical times calculated.
Reduced commissioning:
Since the system is fully tested it is only necessary to prove the relay on site at the service settings, therefore reducing commissioning time to a minimum. Once the switchgear has been installed and cabled up, it is impractical or sometimes impossible to carry out primary injection tests. It is suggested that for commissioning and maintenance purposes either of the following two methods can be used. 1. Simple trip test using the VAP6 test unit (described previously). 2. Secondary injection using standard equipment with an output filter.
Secondary injection:
Testing using secondary injection is used to test the following parts of the protection system: n The electronic circuit. n The integrity of the power supply of the VIP 30/35. n The link to the mitop trip coil and also the circuit breaker mechanical tripping mechanism. n The integrity of the switches on the front panel to ensure they give the correct tripping times for the curves selected.
Caution:
n The ‘MITOP’ trip coil must be used only in conjuction with the VIP relay. n Voltage withstand testing of the auxiliary and control circuits at 2000V for 1 minute should never be carried out without disconnecting the MITOP trip coil or the VIP relay. n Secondary injection facilities are provided on the terminal rail in the LV pilot cable box. n No external connections should be made to the VIP30/35 or the MITOP trip coil.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 22
Test set connections:
The injection set is connected to the VIP 30/35 relay without disconnecting the CT’s. This is done via the sockets on the terminal rail located in the LV compartment.
Phase overcurrent connections:
To test the overcurrent protection the connection should be made across two CT’s (C11-C31. C31-C51, C51-C11).
Earth fault connections:
To test the earth fault protection, the connection should be made across one CT (C11-C10, C31-C30, C51-C50). These numbers should be cross checked with the relevant circuit breaker schematic diagram. Terminals L1 and L4 (not shown above - see Ringmaster selection guide) give access to a normally open contact, which is normally openwhen the CB is in the open position. This can be used to connect a timing device to measure the opening time of the relay and circuit breaker. The type of test plug used to connect to the DIN rail connectors is a standard 4mm 10A test plug. Note: When using a secondary injection set with VIP 30/35 a filter (e.g. Foster SF30) should be used to improve the wave form. If a filter is not used the operating time of the relay may not follow the theoretical operating times.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 23
8. Commissioning Ringmaster with VIP 30/35
89L
52
89R
C11
5 6
VIP 30 IDMT RELAY
L3
C110 C10 C31
7 8 9 10 L1 L2
51
C130 C30 C51
C150 C50
14 11 MITOP COIL K8 4
K8
K11 K11 K11 K11
1
+
0v
2
K9 ITC K7
K9
K9
K9
3
K7
Schematic diagram for VIP 30
89L
52
89R
C11
5 6
VIP 35 IDMT RELAY
L3
C110 C10 C31
7 8 9 10 L1 L2
51/51N
C130 C30 C51
C150 C50 1 C90 REMOVABLE EARTH LINK MITOP COIL K8 K8 + K9 ITC K7 K7 K9 K9 K9 2 12 13 14 11 4 1 2
0v
K11
K11
K11
K11
3
Schematic diagram for VIP 35
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 24
8. Commissioning Ringmaster with VIP 30/35
Recommended test procedure for secondary injection:
The test procedure outlined here is only a guide and may need modifying to suit the different test sets available. The manufacturers instructions should be read before attempting to secondary inject the VIP30/35 relay. The VIP30/35 relays can be secondary injected like any conventional 1A relay, therefore the output recommended for 1A relays should be used. Calculate the secondary current to be injected from the equivalent primary current, taking into account the CT’s used . With the VIP 30/35 connected so as to present the correct burden, the following test can be carried out:
1. Setting check:
Set the current to be injected ( a true RMS ammeter should be used to measure the current). The CB should then be closed and the counter/timer reset. The current should then be applied. When the CB has operated, the applied current should be turned off if not done automatically. The time shown on the counter display includes the operating time of the circuit breaker (approx. 90ms) The actual relay operating time can then be calculated by subtracting this time from the counter reading.
-
-
-
RN2c / RE2c
CT Ratio 200/1A
RN2c / RE2c
CT Ratio 500/1A
Minimum operating current = 20A Secondary injected current 40mA 50mA 60mA 75mA 90mA 110mA 140mA 180mA 230mA 280mA 340mA 400mA Equivalent Primary current 8A 10A 12A 15A 18A 22A 28A 36A 46A 56A 68A 80A
Minimum operating current = 80A Secondary Equivalent Injected Primary current current 40mA 50mA 60mA 74mA 90mA 110mA 140mA 180mA 230mA 280mA 340mA 400mA 20A 25A 30A 37A 45A 55A 70A 90A 115A 140A 170A 200A
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 25
8. Commissioning Ringmaster with VIP 30/35
Commissioning test record:
Secondary injection of Merlin Gerin VIP30/ VIP 35 self powered overcurrent / earth fault relay
Customer Contact Ref. Relay type Current transformers
Site Panel Relay Serial No.
ü
tick as appropriate
o 500/1A o
200/1A
Note : Ensure CT connections are made for the appropriate ratio and that the Scale labels are inserted correctly to match the ratio selected. Indicate on the diagram below actual settings. Carry out tests and record the results in the table provided.
for VIP 30
for VIP 35
front
reverse
front
reverse sensor: S1,S3 to be used
sensor: S1,S2 to be used
sensor: S1,S3 to be used
sensor: S1,S2 to be used
Is18 22 28
15 12 10 8 80 (A) 68 36 46 56
Is
45 37 30 25 20 55 70 90 115 140 170 200 (A)
Is18 22 28
15 12 10 8 80 (A) 68 36 46 56
Is
45 37 30 25 20 55 70 90 115 140 170 200 (A)
Io>30
25 20 15 12 10 120 (A)
Io>
38 48 60 80 100 62 75 95 50 120 37 150 30 200 25 300 250 (A)
S1-S2 wiring
S1-S3 wiring
S1-S2 wiring
S1-S3 wiring
phase overcurrent sensors:
200/1 S 1,S2 to be used
VIP 30
phase overcurrent
VIP 35
sensors: 200/1 S1, S2 to be used
Is
18 22 28 15 12 10 8 80 68 (A) 1.2Is 36 46 56
Is
18 22 28 36 15 12 46 10 56 8 80 68 (A) 1.2Is
to>
VAP6 test plug
Io>
25 30 38 20 48 15 60 12 80 10 120 100 on off inrush current delay 0.3 0.35 0.4 to> 0.25 0.5 0.2 0.6 0.7 0.15 0.1 1 0.8 (s)
VAP6 test plug
Io>
earth fault
(A)
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 26
8. Commissioning Ringmaster with VIP 30/35
Commissioning test record:
1. Operating time and curve check at final settings.
Inject the test current into the relay for each phase in turn and note the operating times.
2.
Instantaneous trip check EF
Inject the appropriate test current into the relay and ensure the correct instantaneous response.
Phase A-B 1. Operating time at final selected setting 2. Current level to trip EF (VIP35 only)
Phase B-C
Phase C-A
EF
3.
Commissioning test record
Check test facility using VAP6
o
Date .
Commissioning engineer
Customer witness
Date
.
__________________________________________________________________________________________
VIP30 / VIP 35 protection relays – version 002 / January 2001 27
