GE D25 User Manual page 135

GE Grid Solutions
CT/PT Modules,
CT input wiring must be shorted externally before servicing the CT
!
transformers
• Open circuiting a Feeder CT will result in feeder voltage being present at the
secondary of the CT.
Removing or
Replacing the
• These Hazardous Voltages may result in equipment damage, shock, burns or
CT/PT
death
Transformers
Note Before accessing the transformers, you must remove the modules mounted
directly above.
Refer to the procedures on the previous page for removal/replacement of
those modules.
Background Due to the stiffness of the wires on the primary of the standard 5 A CTs, the
transformers are manufactured with wires of two different lengths, to
facilitate easier assembly into the bottom of the D25 enclosure.
The part numbers are as follows:
• Standard short lead 5 A CT:
• Standard long lead 5 A CT:
The optional 42 X 5 A CTs are manufactured with both long and short
primary wires. The unused wire should be removed from the transformer
when installed.
• 42 X Overcurrent long/short lead 5 A CT:
If replacement 5 A CTs are required, be sure to order the transformer with the
correct lead length.
Note
Standard and 42 X overcurrent 1 A CTs, and all PTs, have leads flexible
enough that two types are not required.
GE Information
Continued
450-0087
450-0088
450-0108
994-0081-3.00-21
D25
User's Manual
135