Field Ground High-Voltage Protection System - GE G60 Instruction Manual

3 HARDWARE
Table 3–6: GPM-F-L PIN ASSIGNMENTS FOR CONNECTOR B
PIN LABEL DEFINITION
1 CH1(+) RS485 channel 1 positive
2 CH1(–) RS485 channel 1 negative
3 COM RS485 common
4 CH2(+) RS485 channel 2 positive
5 CH2(–) RS485 channel 2 negative
6 IN3 Contact input 3
7 IN2 Contact input 2
8 IN1 Contact input 1
9 COM Contact input common
10 NC Relay NC (normally closed)
11 COM Relay common
12 NO Relay NO (normally open)
Three contact inputs are provided. Upon closure of any one of the contact inputs, low frequency injection stops.
Table 3–7: GPM-F-L PIN ASSIGNMENTS FOR CONNECTOR C
PIN LABEL DEFINITION
1 FGND Field ground
2 F1 Injection to excitation positive
3 F(–) Injection to excitation negative / excitation negative
4 F(+) Excitation positive
The following figure illustrates how to wire the GPM-F-L module for both single-point injection and double-point injection.
Figure 3–55: CONNECTING THE FIELD GROUND PROTECTION MODULE
The field ground high-voltage protection system consists of two modules: the field ground protection high-voltage module
(GPM-F-HM) and the field ground protection high-voltage resistor box (GPM-F-R). The following figures show the mounting
and dimensions (all dimensions are in inches).
GE Multilin
3.4 FIELD AND STATOR GROUND MODULES

3.4.3 FIELD GROUND HIGH-VOLTAGE PROTECTION SYSTEM

G60 Generator Protection System
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