Instruction Book
Effective: May 2016
Page 23
IB131017EN
For more information visit:
www.Eaton.com
Figure 4-1 Typical Fixed VCP-TRL 15KV Circuit Breaker
with Optional Protective Relay
A 5a, 5b auxiliary switch with double break, wipe We
contacts is provided as standard for customer use.
4-6 INSTALLING DRAWOUT CIRCUIT BREAKER
VCP-TL circuit breakers are installed in structures
equipped for drawout circuit breakers. A bolted-in drawout
cassette supports the circuit breaker (Figures 3-7 and 3-8).
4-6.1 DRAWOUT MECHANICAL INTERFACES
Each drawout circuit breaker is supplied with the following
interlocks to insure safe and proper operation.
Rejection Interlocks
Rejection interlocks are steel pins mounted at the bottom of
the drawout circuit breaker and in the base tray (floor) of
the cassette to prevent the insertion of a circuit breaker into
a structure with a higher power rating. The pins are factory
mounted in the circuit breaker.
It is the customer's
responsibility to correctly mount the pins in the
drawout cassette.
WARNING
DO NOT DISABLE REJECTION INTERLOCKS. DOING
SO AND USING A CIRCUIT BREAKER IN A
STRUCTURE WITH A HIGHER POWER RATING COULD
RESULT IN AN ELECTRICAL FAULT WHICH COULD
RESULT IN DEATH, BODILY INJURY AND/OR
EQUIPMENT DAMAGE.
Figure 4-2 Bottom View of VCP-TRL Circuit Breaker
showing Mounting Holes
As the circuit breaker is pushed into the structure, the
mating pins on the bottom of the circuit breaker move past
a set of corresponding pins in the cassette, if the circuit
breaker and cassette are compatible. If there is a
mismatch between the circuit breaker and the cassette,
the rejection pins prevent the circuit breaker from being
fully inserted into the cassette.
Before attempting to position the circuit breaker for
insertion into its cassette, compare the positioning of the
rejection interlock pins in the cassette in keeping with
Table
4.1
and Figure
4-3
and ratings information supplied
on the circuit breaker's nameplate. Proceed if the circuit
breaker and cassette are compatible. If they are not
compatible, do not attempt to insert the circuit breaker into
the cassette. Contact EATON for assistance if required.
Table 4.1 Cassette Rejection Interlock Pin Locations
Cassette Used For
Pin Locations
1
2
3
4
5
6
7
8
9
Short Circuit Rating (kA)
16
0 0
0
20
0 0
1
25
0 1
1
Current Rating (A)
600
0
0 0
800
0
1 0
1200
1
1 0
Rated Voltage (kV)
4.76
0
0
8.25
0
1
15.0
1
1
Type
Dummy Element
0
Circuit Breaker
1
0 = no pin required, 1 = pin required
