External Connections - GE 239 Instruction Manual

2 INSTALLATION
Signal wiring is to box terminals that can accommodate wire as large as 12 gauge. CT connections
are made using #8 screw ring terminals that can accept wire as large as 8 gauge (see Figure 2–3:
TYPICAL WIRING DIAGRAM on page 2–4). A minimal configuration will include connections for
control power, phase CTs and the trip relay. Other features can be wired as required. Considerations
for wiring each feature are given in the sections that follow.
Table 2–2: EXTERNAL CONNECTIONS
CT ROW
1 Phase A CT 5A
2 Phase A CT 1A
3 Phase A CT COM
4 Phase B CT 5A
5 Phase B CT 1A
6 Phase B CT COM
7 Phase C CT 5A
8 Phase C CT 1A
9 Phase C CT COM
10 Ground CT 5A
11 Ground CT 50:0.025
12 Ground CT COM
GE Multilin
Courtesy of NationalSwitchgear.com
SIGNAL LOWER ROW
13 Safety ground
14 Filter ground
15 RS485 A+
16 RS485 B–
17 RS485 ground
18 Analog out +
19 Analog out –
20 Analog out shield
21 Thermistor in +
22 Thermistor com
23 Trip NO
24 Trip COM
25 Trip NC
26 Alarm NO
27 Alarm COM
28 Alarm NC
29 Auxiliary NO
30 Auxiliary COM
31 Auxiliary NC
32 Service NO
33 Service COM
34 Service NC
35 Unused
239 Motor Protection Relay
2 INSTALLATION

2.3 EXTERNAL CONNECTIONS

SIGNAL UPPER ROW
36 Control live (+)
37 Control neutral (–)
38 Sw com
39 Sw com
40 Sw com
41 Sw com
42 Sw com
43 Access sw +
44 Restart sw +
45 Reset sw +
46 Option 1 sw +
47 Option 2 sw +
48 RTD shield
49 RTD1 hot
50 RTD1 comp
51 RTD1 ret
52 RTD2 hot
53 RTD2 comp
54 RTD2 ret
55 RTD3 hot
56 RTD3 comp
57 RTD3 ret
58 Unused
2
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