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SECTION 1: INTRODUCTION
The purpose of this book is to provide instructions for
unpacking, storage, use, operation and maintenance of
Type VCP-WR Vacuum Circuit Breakers. VCP-WR is a
vacuum interrupting element designed for value added
construction. The VCP-WR Red Line family of circuit
breaker elements is comprised of three element types
(Series 18, Series 20 and Series 29). The nominal
widths are 18 inches for Series 18, 20 inches for Series
20 and 29 inches for Series 29. Any one of the three
available elements can be used as a retrofitting drawout
breaker when the customer provides and combines the
appropriate cell interface, truck, levering mechanism,
secondary connections, interlocks and other accessory
items with the VCP-WR element. VCP-WR elements
can also be used for fixed breaker applications with
others responsible for all required interfaces.
1-1 TYPE VCP-WR (RED LINE SERIES) RATINGS
T a b l e 1 . 1 V C P - W R R a t i n g s
Identification
Rated Values
Current
Rated
Contin-
uous
Current
at
60 Hz
Circuit
Amps
Breaker
Series
Type
Width
VCP-WR Vacuum Circuit Breaker
50 VCP-WR 250
18, 20, 29
1200
18, 20, 29
2000
29
3000
20, 29
1200
50 VCP-WR 350
20, 29
2000
29
3000
18, 29
1200
75 VCP-WR 500
18, 29
2000
29
3000
18
600
150 VCP-WR 500
18, 29
1200
18, 29
2000
29
3000
150 VCP-WR 750
18, 29
1200
18, 29
2000
29
3000
150 VCP-WR 1000 29
1200
29
2000
29
3000
150 VCP-WR 1500 29
1200
29
2000
29
3000
I.B. 8295A61H07
Voltage
Nominal
Nominal
Rated
Rated
3-Phase
Voltage
Short
Max.
MVA
Class
Circuit
Voltage
Class
Current
(at
Rated
Max.
kV)
I
E
kV
MVA
kA rms
kV rms
Class
Class
29
4.16
250
4.76
41
4.16
350
4.76
33
7.2
500
8.25
18
13.8
500
15
28
13.8
750
15
37
13.8
1000
15
63
13.8
1600
15
or
1500
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SATISFACTORY PERFORMANCE OF THESE
BREAKERS IS CONTINGENT UPON PROPER
APPLICATION, CORRECT INSTALLATION AND
ADEQUATE MAINTENANCE. THIS INSTRUCTION
BOOK MUST BE CAREFULLY READ AND
FOLLOWED IN ORDER TO OBTAIN OPTIMUM
PERFORMANCE FOR LONG USEFUL LIFE OF THE
CIRCUIT BREAKERS.
TYPE VCP-WR BREAKERS ARE PROTECTIVE
DEVICES, AS SUCH, THEY ARE MAXIMUM RATED
DEVICES. THEREFORE, THEY SHOULD NOT
UNDER ANY CIRCUMSTANCES BE APPLIED OUT-
SIDE THEIR NAMEPLATE RATINGS.
Insulation Level
Rated
Inter-
Rated
Rated Withstand
rupting
Voltage
Test Voltage
Time
Range
Factor
Low
Fre-
quencey
Impulse
K
Cycles
kV rms
kV Crest
1.24
19
60
5
1.19
19
60
5
1.25
36
95
5
1.30
36
95
5
1.30
36
95
5
1.30
36
95
5
1.0
36
95
5
www.EatonElectrical.com
Instruction Book
Effective: February 2007
WARNING
Related Required Capabilities
Rated
Rated
Current Values
Permis-
Max.
Maxi-
3 Sec.
sible
Voltage
mum
Short
Tripping
Divided
Sym.
Time
Delay
by K
Inter-
Current
rupting
Carrying
Capability
Capability
K Times Rated
Short Circuit
Current
Y
E/K
KI
Sec.
kV rms kA rms
kA rms
2
3.85
36
36
2
4.0
49
49
2
6.6
41
41
2
11.5
23
23
2
11.5
36
36
2
11.5
48
48
2
15.0
63
63
Page 1
Closing
and
Latching
Capability
(Momen-
tary)
2.7 K
Times
Rated
Short
Circuit
Current
kA Crest
97
132
111
62
97
130
170
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