8
Instruction Booklet
IB131006EN
Effective March 2019
Instructions for installation,
operation, and maintenance of type
VCP-W vacuum circuit breakers
EATON
www.eaton.com
Table 2. (ANSI Standards
a
) type VCP-W vacuum circuit breaker 27 kV rated symmetrical current basis.
Identification
Rated values
Circuit
breaker
type
Nominal
voltage
class
Nominal
3-phase
MVA
class
Voltage
Insulation level
Current
Inter-
rupting
time
d
Permis-
sible
tripping
delay
Y
Transient
recovery voltage
Current values
Max.
voltage
b
E
Voltage
range
factor
c
K
Withstand test
voltage
Continuous
current
at 60 Hz
Short
circuit
current
3 Second
short time
current
carrying
capability
I
E
2
t
2
rise
time
Closing &
latching
capability
2.7 K
times
rated
short
circuit
current
Capacitor
switching
& cable
charging
Power
frequency
(1 min.)
Impulse
kV
MVA
kV rms
kV rms
Amperes
kA rms
Cycles
Seconds kV rms
kA rms kA peak
kA rms
270VCP-
W750(16)
e
27
750
27
1.0
60
125
600
1200
2000
16
5
2
51
105
43
31.5
270VCP-
W1000(22)
e
27
1000
27
1.0
60
125
600
1200
2000
22
5
2
51
105
60
31.5
270VCP-
W1250(25)
e
27
1250
27
1.0
60
125
600
1200
2000
25
5
2
51
105
68
31.5
270VCP-
W1600(32)
f
27
1600
27
1.0
60
125
1200
2000
31.5
5
2
51
105
85
31.5
270VCP-
W2000(40)
f
27
2000
27
1.0
60
125
1200
2000
40
5
2
51
105
106
31.5
a
All circuit breakers are tested to 60 Hz; however, they can also be applied at 50 Hz with no derating.
b
K=1.0, therefore E = E/K and I = KI. Consult the Consulting Application Guide CA08104001E sections 1 and 5 for further information.
c
Consult the Consulting Application Guide CA08104001E sections 1 and 5 for further information.
d
Optional interrupting time of 3 cycles is available.
e
Tested at 28.5 kV RMS.
f
Tested at 29.5 kV RMS.
