GE D90 Plus Instruction Manual page 62

ELECTRICAL INSTALLATION
54
Figure 26: 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 an input for features such as synchrocheck, volts per
hertz, and auxiliary undervoltage.
A typical AC module wiring diagram is shown below. Substitute the tilde "~" symbol with
the slot position of the AC module.
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION