38
Instruction Booklet
IB131006EN
Effective March 2019
Instructions for installation,
operation, and maintenance of type
VCP-W vacuum circuit breakers
EATON
www.eaton.com
Table 21. VCP-W & VCP-WC circuit breaker barrier
configurations.
ANSI
breaker
identification
Amps
Reference
vacuum
interrupter
diameter inches
Number
of barriers
50VCPW-ND250
1200
4
0
50VCP-W250
1200
2000
3000
4
5
7
2 (OUTER)
4
2 (INNER) 2 in cell
50VCP-W350
1200
2000
3000
7 or 5
7 or 5
7
2 (INNER) 2 in cell
2 (INNER) 2 in cell
2 (INNER) 2 in cell
75VCP-W500
1200
2000
3000
5 or 4
5
7
2 (OUTER)
4
2 (INNER) 2 in cell
150VCP-W500
1200
2000
3000
4 or 3
5
7
2 (OUTER)
4
2 (INNER) 2 in cell
150VCP-W750
1200
2000
3000
4
5
7
2 (OUTER)
4
2 (INNER)2 in cell
150VCP-W1000
1200
2000
3000
7 or 5
7 or 5
7
2 (INNER) 2 in cell
2 (INNER) 2 in cell
2 (INNER) 2 in cell
150VCP-W63
1200
2000
3000
7
7
7
2 (INNER) 2 in cell
2 (INNER) 2 in cell
2 (INNER) 2 in cell
270VCP-W
630
1200
2000
4
4 or 5
5
2 (INNER) 2 in cell
2 (INNER) 2 in cell
2 (INNER) 2 in cell
50VCP-W25C
1200
2000
3000
4
5
7
2 (INNER) 2 in cell
2 (INNER) 2 in cell
2 (INNER) 2 in cell
150VCP-W25C
1200
2000
3000
4
5
7
2 (INNER) 2 in cell
4
2 (INNER) 2 in cell
50VCP-W40C
150VCP-W40C
50VCP-W50C
150VCP-W50C
1200
2000
3000
5
5
7
2 (INNER) 2 in cell
2 (INNER) 2 in cell
2 (INNER) 2 in cell
50VCP-W63C
150VCP-W63C
1200
2000
3000
7
7
7
2 (INNER) 2 in cell
2 (INNER) 2 in cell
2 (INNER) 2 in cell
Note:
Although only standard ANSI rated VCP-W breakers are
given in these configurations, all VCPW-SE and IEC rated
breakers follow the same barrier configurations based on
the diameter of the vacuum interrupter.
VCP-W (K = 1) circuit breaker barrier configurations.
ANSI
breaker
identification
Amps
Reference
vacuum
interrupter
diameter inches
Number
of barriers
50VCP-W25
1200
2000
3000
3
4
5
2 (INNER)
4
2 (INNER)
50VCP-W40
1200
2000
3000
4
4
5
4
4
2 (INNER)
50 VCP-W50
1200
2000
3000
5
5
5
2 (INNER), 2 in cell
2 (INNER), 2 in cell
2 (INNER), 2 in cell
50 VCP-W63
1200
2000
3000
7
7
7
2 (INNER), 2 in cell
2 (INNER), 2 in cell
2 (INNER), 2 in cell
75 VCP-W40
1200
2000
3000
4
4
7
4
4
2 (INNER)
75 VCP-W50
1200
2000
3000
5
5
7
2 (INNER), 2 in cell
2 (INNER), 2 in cell
2 (INNER), 2 in cell
150 VCP-W25
1200
2000
3000
3
4
7
2 (INNER)
4
2 (INNER)
VCP-W (K = 1) circuit breaker barrier configurations.
ANSI
breaker
identification
Amps
Reference
vacuum
interrupter
diameter inches
Number
of barriers
150 VCP-W40
1200 2000 3000
5
5
7
4
4
2 (INNER)
150 VCP-W50
1200 2000 3000
5
5
7
2 (INNER), 2 in cell
2 (INNER), 2 in cell
2 (INNER), 2 in cell
150 VCP-W63
1200 2000 3000
7
7
7
2 (INNER), 2 in cell
2 (INNER), 2 in cell
2 (INNER), 2 in cell
m
WARNING
DO NOT PLACE THE CIRCUIT BREAKER IN ITS COMPARTMENT WITHOUT
THE PHASE BARRIERS IN PLACE. THE ABSENCE OF THE BARRIERS COULD
CAUSE A CATASTROPHIC FAILURE DURING INTERRUPTION OR OPERATION
RESULTING IN DEATH, SEVERE PERSONAL INJURY, AND/OR PROPERTY
DAMAGE.
The multiple finger primary disconnect contacts are silver plated and
waxed. In order to provide visual indication of the presence of wax,
a blue dye is added during the waxing process to give a bluish color
to the disconnect contacts. The wax acts as a conductive lubricant
without attracting dirt. For this reason the contacts do not require
any additional lubricant.
5.3 Stored energy mechanism
m
WARNING
KEEP HANDS AND FINGERS AWAY FROM THE CIRCUIT BREAKER’S
INTERNAL PARTS WHILE THE CIRCUIT BREAKER CONTACTS ARE CLOSED
OR THE CLOSING SPRINGS ARE CHARGED. THE CIRCUIT BREAKER
CONTACTS MAY OPEN OR THE CLOSING SPRINGS DISCHARGE CAUSING
A CRUSHING INJURY. DISCHARGE THE SPRINGS AND OPEN THE CIRCUIT
BREAKERS BEFORE PERFORMING ANY CIRCUIT BREAKER MAINTENANCE,
INSPECTION, OR REPAIR.
The spring stored energy operating mechanism is arranged vertically
in front of all VCP-W circuit breakers (Figure 5). It includes all the
elements for storing the energy, closing and tripping of the circuit
breaker, as well as manual and electrical controls. The manual
controls are all front accessible. Motion to close and open the
interrupter contacts is provided through operating rods connect-
ing the mechanism pole shaft to the bell cranks of the interrupter
assemblies.
5.3.1 Operation of stored energy mechanism
The mechanism stores the closing energy by charging the closing
springs. The mechanism may rest in any one of the four positions
shown in Figure 20 and as follows:
a. Breaker element open, closing springs discharged;
b. Breaker element open, closing springs charged;
c. Breaker element closed, closing springs discharged; and
d. Breaker element closed, closing springs charged.
(cont).