Installation Manual

3A74374H04 Page 13
Effective 03/13
Table 1.6 (IEC-56 Standards
 ) Type VCP-W Vacuum Circuit Breaker Through 24 kV Rated Symmetrical Current Basis
Identification Rated values
Insulation level Transient Recovery Voltage
Voltage 
Power
frequency
Lightening
Impulse
withstand
Normal Current Short circuit
breaking
current
u
C
t
3
t
d
Circuit
Breaker Type
kV rms kV rms kA peak Amperes kA rms
kA peak
s s
Short
Time
(3 Second)
Current
kA rms
Short
Circuit
Making
Current
kA peak
Cable
Charging
Breaking
Current
A rms
240VCP-W16
24
60 125 630
1250
2000
16 41 88 13 16 40 31.5
240VCP-W20
24
60 125 630
1250
2000
20 41 81 13 20 50 31.5
240VCP-W25
24
60 125 630
1250
2000
25 41 88 13 25 63 31.5
 CESI certified for rated operating sequence: O-0.3 seconds-CO-15 seconds-CO
in accordance with IEC 56. Consult Eaton for CESI certificates on file.
 Tested at 28.5 kV.
Table 1.7 (GB Standards) Type VCP-WGC High Altitude Generator Vacuum Circuit Breaker Through 15 kV Rated
Symmetrical Current Basis
Identification
Rated values
Insulation level
Normal Current Short circuit
Breaking current
Interrupting Time
Close & Latch
Current
Out of Phase
Switching
Current
Voltage Class
Power frequency Impulse withstand
Circuit Breaker Type
(1)
kV rms kV rms kV peak
Amperes kA rms milliseconds kV peak kA rms
150VCP-WGC 50 15 60 125 2000 50 80 137 25
 Tested at 50Hz to GB / T14824