GE M60 Instruction Manual page 67

3 HARDWARE
The exact placement of a zero-sequence core balance CT to detect ground fault current is shown below. Twisted-pair
cabling on the zero-sequence CT is recommended.
Figure 3–14: ZERO-SEQUENCE CORE BALANCE CT INSTALLATION
The phase voltage channels are used for most metering and protection purposes. The auxiliary voltage channel is used as
input for the synchrocheck and volts-per-hertz features.
Substitute the tilde "~" symbol with the slot position of the module in the following figure.
NOTE
GE Multilin
UNSHIELDED CABLE
Ground connection to neutral
must be on the source side
Source
A B C N G
Ground
outside CT
LOAD
Current inputs
8F, 8G, 8L, and 8M modules (4 CTs and 4 VTs)
Current inputs
8H, 8J, 8N, and 8R modules (8 CTs)
Figure 3–15: CT/VT MODULE WIRING
M60 Motor Protection System
SHIELDED CABLE
Stress cone
Source
shields
A B C
To ground;
LOAD
must be on
load side
996630A5
Voltage inputs
842766A3.CDR
3.2 WIRING
3
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