2 CT CONNECTION
(NO GROUND)
PHASE A CT
1
2
3
4
5
5A
1A
COM
5A
1A
COM
PHASE A
PHASE B
STARTER
SUPPLY
A
B
C
CONTACTOR
COIL
CONTROL
POWER
N
L
START
STOP
CC
GENERAL ALARM
ACCESS
KEY SWITCH
EMERGENCY
RESTART
EXTERNAL
RESET
OPTION 1
OPTION 2
2–20
Courtesy of NationalSwitchgear.com
L1
L2
PHASE C CT
L3
6
7
8
9
10
11
12
5A
1A
COM
5A
50:0.025
COM
PHASE C
GROUND
L1
L2
L3
CONTROL POWER
80-300 VDC
70-265 VAC 50/60 Hz
13 14 36 37
N
L
SAFETY
FILTER
SWITCHGEAR
+
-
GROUND BUS
GROUND
GROUND
CONTROL
POWER
23
NO
RELAY #1
24
COM
TRIP
25
NC
26
NO
RELAY #2
27
COM
ALARM
28
NC
29
NO
RELAY #3
COM
30
AUXILIARY
31
NC
32
NO
RELAY #4
33
COM
SERVICE
34
NC
43
IN
SETPOINT
ACCESS
38
COM
44
IN
EMERGENCY
RESTART
39
COM
IN
45
EXTERNAL
RESET
40
COM
46
IN
OPTION 1
41
COM
47
IN
OPTION 2
42
COM
NOTES:
1)
RELAY CONTACT STATE SHOWN WITH
CONTROL POWER NOT APPLIED.
2)
RELAY FACTORY DEFAULTS:
TRIP, ALARM, AUXILIARY:
SERVICE:
FAILSAFE
FIGURE 2–3: Typical Wiring Diagram
RESIDUAL GROUND CONNECTION
PHASE A CT
PHASE B CT
PHASE C CT
1
2
3
4
5
6
7
8
5A
1A
COM
5A
1A
COM
5A
1A
PHASE A
PHASE B
PHASE C
ZERO SEQUENCE GROUND CONNECTION
PHASE A CT
PHASE B CT
PHASE C CT
1
2
3
4
5
6
7
8
5A
1A
COM
5A
1A
COM
5A
1A
PHASE A
PHASE B
PHASE C
CURRENT INPUTS
GE Power Management
239 MOTOR PROTECTION RELAY
485 GROUND
THERMISTOR
S1
S2
S3
S4
S5
3)
SHIELD TERMINALS ARE INTERNALLY
CONNECTED TO SAFETY GROUND
TERMINAL 13
NON-FAILSAFE
4)
RTD TEMPERATURE SENSING
AND ANALOG OUTPUT OPTIONAL
239 MOTOR PROTECTION RELAY – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION
L1
L2
L3
9
10
11
12
COM
5A
50:0.025
COM
GROUND
50:0.025
GROUND CT
L1
L2
MOTOR
L3
TWIST
LEADS
9
10
11
12
COM
5A
50:0.025
COM
GROUND
USE SHIELDED TWISTED
PAIR WIRE
RS485 +
15
RS485
RS485 -
16
17
THERMAL
CAPACITY
18
19
SHIELD
20
IN+
21
STATOR
THERMISTOR
COM
22
SHIELD
48
HOT
49
STATOR
50
COMP
RTD
51
RET
HOT
52
STATOR/
COMP
53
BEARING RTD
RET
54
HOT
55
STATOR/
COMP
56
BEARING RTD
RET
57
USE SHIELDED WIRE
819751B5.DWG
819829B6.CDR