I.B. 32-255-1G
Page 3
Effective 12/02
Table 1.2 (ANSI Standards
➀
) Type VCP-W Vacuum Circuit Breaker 27 kV Rated Symmetrical Current Basis
Identification Rated Values
Circuit Nominal Nominal Voltage Insulation Level Current Inter- Permis- Transient Recovery Voltage Current Values
Breaker Voltage 3-Phase Maximum Voltage Withstand Test Continuous Short rupting sible E
2
t
2
Closing Capacitor
Type Class MVA Voltage
➁
Range Voltage Current Circuit Time
➃
Tripping Rise and Switching
Class Factor
➂
at 60 Hz Current
➄
Delay Time Latching Cable
Capability Charging
Power Impulse 3 Second 2.7 K Times
Frequency Short Time Rated
(1 Min.)
Current
Short
Carrying
Circuit
Capability Current
EK I Y
kV MVA kV rms kV rms kV Peak Amperes kA rms Cycles Seconds kV Peak µs kA Peak Amperes
270VCP-W750
(16)
27 750 27 1.0 60 125 600 16 5 2 51 105 43 31.5
1200
2000
270VCP-W1000
(22)
27 1000 27 1.0 60 125 600 22 5 2 51 105 60 31.5
1200
2000
270VCP-W1250
(25)
27 1250 27 1.0 60 125 600 25 5 2 51 105 68 31.5
1200
2000
270VCP-W1600
(32)
27 1600 27 1.0 60 125 1200 31.5 5 2 51 105 85 31.5
2000
270VCP-W2000
(40)
27 2000 27 1.0 60 125 1200 40 5 2 51 105 106 31.5
2000
➀
CESI tested to applicable ANSI Standards C37.04 - 1979, C37.09 - 1979, and
C37.06 - 199X. Consult Cutler-Hammer for CESI reports on file. Operating duty
cycle CO-15 seconds-CO. Operating time values: opening 33-55 ms, closing
50-60 ms and reclosing 18 cycles (300 ms).
➁
Testing at 28.5 kV.
➂
K=1.0, therefore E = E/K and I = KI. Consult Application Data 32-265 for further
information.
➃
Optional interrupting time of 3 cycles is available.
➄
Also maximum interrupting rating.
5.95
5.95
10.3
17.5
17.5
17.5
27
27
27
1
1
1
1
1
1
1
1
1
24
24
42
42
42
42
60
60
60
75
75
95
95
95
95
125
125
125
40
50
50
25
40
50
25
31.5
40
75
57
57
52
57
57
52
50
75
75
75
57
57
52
75
57
50
58
64
64
62
64
64
62
31
36
36
58
64
64
62
36
40
49
139
139
139
97 (2)
139
139
85
97
104
40
50
50
25
40
50
25 (8)
32 (7)
40 (7)
50
50
50
50
50
50
50
50
50
2
2
2
2
2
2
2
1
1
0.9
0.9
0.8
0.9
0.9
0.8
0.9
0.9
0.8
0.95
0.9
0.8
0.9
0.9
0.8
0.9
0.9
0.8
1.1
1.1
1.1
15
18
—
15
18
—
15
18
—
20
18
—
15
18
—
15
18
—
20
20
20
3.5
2.7
—
3.5
2.7
—
3.5
2.7
—
3.5
2.7
—
3.5
2.7
—
3.5
2.7
—
4.2
4.2
4.2
Max
Voltage
V
Voltage
Range
Factor
K
Voltage
Power
Frequency
(1 Min.)
Lightening
Impulse
1.2x50us
Withstand Test
Insulation Level
Continuous
Current at
60 Hz
Sym.
Inter-
rupting
at V (Isc)
% dc
compo-
nent
(Idc)
Asym.
Inter-
rupting
(I
t
)
Closing
&
Latching
Capa-
bility
Short-
Time
Current
for
3 sec.
Short-Circuit Current
Current
Inter-
rupting
Time
(1)
Maximum
Permis-
sible
Tripping
Delay
Transient
Recovery
Voltage
(RRRV)
(3)
Isolated
Shunt
Capacitor
Bank
Current
General
Purpose
Capacitor
Bank
Current
Back to Back Capacitor Switching
Definite Purpose
Capacitor Switching Ratings
kHzkA PeakA rmsA rmskV / µsSecondsmskA rmskA PeakkA rms%
kA rms
Total
A rmskV PeakkV rmskV rms
50 VCP-W 40C
50 VCP-W 50C
75 VCP-W 50C
150 VCP-W 25C
150 VCP-W 40C
150 VCP-W 50C
270 VCP-W 25C
270 VCP-W 32C
270 VCP-W 40C
1200
2000
3000
1200
2000
3000
1200
2000
3000
1200
2000
3000
1200
2000
3000
1200
2000
3000
1200
1600
1200
1600
1200
1600
630 (5)
1000 (5)
—
630 (5)
1000 (5)
—
630 (5)
1000 (5)
—
600 (6)
1000 (5)(6)
—
630 (5)(6)
1000 (5)(6)
—
630 (5)(6)
1000 (5)(6)
—
400
400
400
Circuit
Breaker
Type
Mechanical
Endurance
No-Load
Operations
Inrush
Current
Inrush
Frequency
10,000
10,000
5,000
10,000
10,000
5,000
10,000
10,000
5,000
10,000
10,000
5,000
10,000
10,000
5,000
10,000
10,000
5,000
2,500
2,500
2,500
(1) 3 cycles
(2) Close & Latch Current for 1200A Type 150 VCP-W 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.
(4) Breaker tested to 2700A single bank switching for momentary
load (Thermal derating must consider harmonic content of
current waveform).
(5) Breaker tested to 1270A back to back switching for momentary load
(Thermal derating must consider harmonic content of
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
Identifcation Rated Values
Table 1.3 (ANSI Standards) Type VCP-WC Extra Capability Vacuum Circuit Breaker 5-15 kV Rated Symmetrical
Current Basis
To Next Page
Loading...
