Eaton Cutler-Hammer VCP-WR Series Instructions For The Use, Operation And Maintenance page 8

Instruction Book
Page 2 Effective: February 2007
Table 1.2 (ANSI Standards) Type VCP-WRC Extra Capability Vacuum Circuit Breaker 5-27 kV Rated Symmetrical Current
Basis
Identification
Rated voltage
Voltage
Max
Voltage
Voltage
Range
factor
Circuit
Breaker Series
Type Width
v
KV rms
50 VCP-
29 5.95
WR40C
50 VCP-WR 29 5.95
75 VCP-
29 10.3
WR50C
150 VCP-
29 17.5
WR25C
150 VCP-
29 17.5
WR40C
150 VCP-
29 17.5
WR50C
270 VCP-
29 27
WR25C
270 VCP-
29 27
WR32C
270 VCP-
29 27
WR40C
(1) 3 cycles
(2) Close & Latch Current for 1200A Type 150 VCP-WR 25C is
proven
at 15kV. For sealed interrupters at high altitudes, switching voltage
is not de-rated.
(3) For higher RRRV contact Cutler-Hammer for more information.
Table 1.3 (ANSI Standards) Type VCP-WRG Generator Vacuum Circuit Breaker 15 kV Rated Symmetrical Current Basis
Identification
Rated Values
Voltage
Series
Circuit
Maximum
Width
Voltage
E
29
50VCP-WRG50 29
50VCP-WRG63 29
150VCP-WRG50 29
150VCP-WRG50C 29
150VCP-WRG63 29
H i g h a l t i t u d e r a t e d c i r c u i t b r e a k e r
Insulation level
Withstand test
Power Continuou Sym.
Lightening
Frequenc s Inter-
Impulse
y Current at rupting
1.2x50us
(1 Min.) 60 Hz at V
k
kA
kV rms kV Peak A rms
Total
1200
1 24 75 2000 40
3000
1200
1 24 75 2000 50
3000
1200
1 42 95 2000 50
3000
1200
1 42 95 2000 25
3000
1200
1 42 95 2000 40
3000
1200
1 42 95 2000 50
3000
1200
1 60 125 25
1600
1200
1 60 125 31.5
1600
1200
1 60 125 40
1600
(4) Breaker tested to 2700A single bank switching for momentary
load (Thermal derating must consider harmonic content of
current waveform).
(5) Breaker tested to 1 270A back to back switching for
momentary load
(Thermal derating must consider harmonic content of
Insulation Level
Withstand Test Voltage
Voltage
Range Factor
Power
Frequency
K
(1 minute)
kV rms kV rms
4.76 1 19
4.76 1 19
15.0 1 36
15.0 1 36
15.0 1 36
For more information visit: www.EatonElectrical.com
Current
Inter-
Short circuit current
ruptin
% dc Closing Short- g
Asym.
Time
compo & Time
Inter-
- Latching Current
rupting
nent Capa- for (1)
(Isc) (It)
(Idc) bility 3 sec.
rms
% kA rms kA Peak kA rms Ms
75 58 139 40 50
57 64
57 64 139 50 50
52 62
57 64
57 64 139 50 50
52 62
50 31
75 36 97 (2) 25 50
75 36
75 58 139 40 50
57 64
57 64 139 50 50
52 62
75 36 85 25 (8) 50
57 40 97 32 (7) 50
50 49 104 40 (7) 50
Current
Continuou Short Circuit
s Current (at
Impulse
Current Rated
at 60 Hz Maximum kV)
kV Peak Amperes kA rms
60 1200 50
2000
3000
60 1200 63
2000
3000
95 1200 50
2000
3000
95 2000 50
95 1200 63
2000
3000
Capacitor Switching Ratings
General
Maximum
Transient Definite purpose
purpose
Permissibl
Recovery
e Isolated
Voltage
Back to Back Capacitor Switching
Tripping
Shunt
(RRRV)
Delay Capacitor Capacitor
Bank Bank
(3) Current Current
Seconds kV / s A rms A rms
0.9 630 (5)
2 0.9 1000 (5)
0.8 —
0.9 630 (5)
2 0.9 1000 (5)
0.8 —
0.9 630 (5)
2 0.9 1000 (5)
0.8 —
0.95 600 (6)
2 0.9 1000 (5)(6)
0.8 —
0.9 630 (5)(6)
2 0.9 1000 (5)(6)
0.8 —
0.9 630 (5)(6)
2 0.9 1000 (5)(6)
0.8 —
2 1.1
400
1
1.1 400
1
1.1 400
current waveform).
(6) Capacitor Switching Ratings are proven at 15kV. For sealed
interrupters at high altitudes, switching voltage is not de-rated.
(7) 1 second
(8) 2 seconds
Interruptin Permissible Maximum Peak
g Tripping Voltage Voltage
Time Time Divided by K E2
E/K
Y
Cycles Seconds kV rms
3 2 4.76
3 2 4.76
3 2 15.0
3 2 15.0
3 2 15.0
Mechanical
Endurance
Inrush Inrush
Current Frequency
No-load
Operations
kA Peak kHz
15 3.5 10,000
18 2.7 10,000
— — 5,000
15 3.5 10,000
18 2.7 10,000
— — 5,000
15 3.5 10,000
18 2.7 10,000
— — 5,000
20 3.5 10,000
18 2.7 10,000
— — 5,000
15 3.5 10,000
18 2.7 10,000
— — 5,000
15 3.5 10,000
18 2.7 10,000
— — 5,000
20 4.2
2,500
20 4.2
2,500
20 4.2
2,500
Time-to- Close and
Peak Latch
t2 Capability
Momentary
kV s kA Peak
27 8.8 137
28 9.0 173
27 3.5 137
27 3.5 137
28 3.5 173
I.B. 8295A61H07