Eaton VC-W MR2, Инструкционная книжка

Страница: 5 / 18

5
Instructional Booklet IB022010EN
Effective July 2019
Revision #4
Instructions for installation, operation,
and maintenance of medium voltage
VC-W MR2 (integral racking)
EATON www.eaton.com
Pan configurations
Integrated racking is available for all voltage ratings . For 5/15 kV and
27 kV switchgear, there is an optional “Test” position available . The
“Test” position is a physically different position in this assembly,
and the breaker can be racked from “Disconnect” to “Test”, “Test to
Connect”, or in any other order selected by the operator . See below
for what positions are available for each voltage rating .
Voltage
class (kV)
Breaker
cell width
in inches
Breaker
positions available
Auxiliary
positions available
5/15 36.00 Disconnect and Connect Disconnect and Connect
5/15
a
36.00 Disconnect, Test, and Connect Disconnect and Connect
5 26.00 Disconnect and Connect N/A
27 36.00 Disconnect and Connect N/A
27
b
36.00 Disconnect, Test, and Connect N/A
38 42.00 Disconnect and Connect N/A
a
Optional “Test” position with Breaker Position Indication (BPI) pan only.
b
Optional “Test” position available with non-arc gear equipped with BPI pan only.
Permissive interlocks
Operational interlock features
There are multiple permissive interlocks features built into the
controller programming, and error codes are displayed on the
pendant . There are three standard permissive interlocks wired for
every breaker cell with integrated racking and one for every auxiliary
cell with integrated racking .
Breaker cell specific interlocks:
1. Normally closed mechanism-operated compartment (MOC)
contact wired into the controller programming permissive circuit
(breaker cell only) . Part of the E5 error code circuit (see
Figure 1 ) .
a. If the MV circuit breaker is closed, this circuit will open and
the motor will not run .
b. This permissive uses only the controller programming to stop
the motor from being powered on .
2. Normally closed MOC contact wired in series with the black
motor lead (breaker cell only) . Part of the E2 error code circuit
(see Figure 1 ) .
a.
This wrks the same as the first MOC permissive .
b. Used as a redundant interlock in case the first MOC
permissive fails .
c. This contact breaks the power to the motor for a more
hardwired permissive .
Breaker cell and auxiliary cell interlocks:
1. Normally closed manual crank permissive switch located on the
right side of the Lev-in assembly (breaker and auxiliary cell) (see
Figure 15 and 16 ) . Part of the E5 error code circuit (see Figure 1 ) .
a.
This permissive is opened if an operator inserts a tool into
the manual crank of the Lev-in assembly .
b. This prevents someone from operating the motor while a
person is manually racking the MV circuit breaker or auxiliary .
In addition to the permissive contacts mentioned above,
the controller will accept as many normally closed permissive
contacts wired in series with permissive #1 and #3 as specified
(see Figure 1 - circuit board wiring points) .