Control Cabinet Set-Up
Figure 50. Following the wiring diagram furnished, connect user-fur nished
CTs to the shorting blocks in the control cabinet.
CT shorting blocks
Connecting Current Transformers to
the Control Cabinet
Before connecting current transformers, the
relays inside the Model SE control cabinet
should be configured in accordance with the
instructions in the furnished relay manual.
NOTICE
Make sure the CTs conform to the allow-
able values listed S&C Data Bulletin 731-60 .
If these guidelines are not followed, the
overcurrent protection system may not
function properly.
Step 48
Following the wiring diagram furnished, con-
nect user-furnished current transformers (CTs)
to the shorting blocks in the control cabinet.
Follow standard operating proce dures for
connecting CTs to relaying equip ment. See
Figure 50.
Ç
CAUTION
DO NOT connect any monitoring devices to
the Model SE trip-energy circuit .
The trip-energy supply cannot support
additional loads .
Failure of the Trans-Rupter II to open
when signaled could result.
NOTICE
The manual trip device cannot be used to
test the trip-energy supply, and vice versa .
Current from each device is connected directly
to the trip solenoid and is prevented from
powering the other device (diode blocked) .
S&C Instruction Sheet 731-502
27
