GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual page 27

3 INSTALLATION
Table 3–1: REAR TERMINAL ASSIGNMENTS
TERMINAL DESCRIPTION
ANALOG INTERFACE
A1 ANALOG INPUT +
A2 ANALOG INPUT –
A3 TAP POSITION (+)
A4 TAP POSITION (–)
A5 ANALOG OUTPUT (Common)
A6 ANALOG OUTPUT 1 (+)
A7 ANALOG OUTPUT 2 (+)
A8 ANALOG OUTPUT 3 (+)
A9 ANALOG OUTPUT 4 (+)
A10 ANALOG OUTPUT 5 (+)
A11 ANALOG OUTPUT 6 (+)
A12 ANALOG OUTPUT 7 (+)
COMMUNICATIONS and RTD INPUTS
B1 COMPUTER RS485 (+) / RS422 (Rx +)
B2 COMPUTER RS485 (–) / RS422 (Rx –)
B3 COMPUTER RS485 (Com) / RS422 (Com)
B4 RS422 (Tx +)
B5 RS422 (Tx –)
B6 EXTERNAL RS485 (+)
B7 EXTERNAL RS485 (–)
B8 IRIG-B +
B9 IRIG-B –
B10 RTD 1 HOT
B11 RTD 1 COMPENSATION
B12 RTD 1 RETURN
LOGIC INPUTS 9 to 16 and VT INPUT
C1 LOGIC INPUT 9 (+)
C2 LOGIC INPUT 10 (+)
C3 LOGIC INPUT 11 (+)
C4 LOGIC INPUT 12 (+)
C5 LOGIC INPUT 13 (+)
C6 LOGIC INPUT 14 (+)
C7 LOGIC INPUT 15 (+)
C8 LOGIC INPUT 16 (+)
C9 RESERVED
C10 RESERVED
C11 VT INPUT
C12 VT INPUT
LOGIC INPUTS 1 to 8 and DEDICATED INPUTS
D1 LOGIC INPUT 1 (+)
D2 LOGIC INPUT 2 (+)
D3 LOGIC INPUT 3 (+)
D4 LOGIC INPUT 4 (+)
D5 LOGIC INPUT 5 (+)
D6 LOGIC INPUT 6 (+)
D7 LOGIC INPUT 7 (+)
D8 LOGIC INPUT 8 (+)
D9 SETPOINT ACCESS (+)
D10 SETPOINT ACCESS (–)
D11 LOGIC POWER OUT (+)
D12 LOGIC POWER OUT (–)
indicates high side of CT and VT terminals
GE Multilin
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TERMINAL
OUTPUTS & GROUND CT N2
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
OUTPUTS and GROUND CT N2
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
CT INPUTS and 745 GROUNDING
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
CT and VT INPUTS / POWER
H1
H2
H3
H4
H5
H6
H7
H8
H9
H10
H11
H12
745 Transformer Management Relay
3.2 TYPICAL WIRING
DESCRIPTION
OUTPUT 1 - SOLID STATE TRIP (+)
OUTPUT 2 - TRIP RELAY (N/O)
OUTPUT 3 - TRIP RELAY (N/O)
OUTPUT 4 - TRIP RELAY (N/O)
OUTPUT 5 - TRIP RELAY (N/O)
OUTPUT 6 - AUXILIARY RELAY (N/O)
OUTPUT 6 - AUXILIARY RELAY (N/C)
OUTPUT 7 - AUXILIARY RELAY (N/O)
OUTPUT 8 - AUXILIARY RELAY (N/O)
OUTPUT 8 - AUXILIARY RELAY (N/C)
OUTPUT 9 - SERVICE RELAY (Common)
GROUND - WINDING 2/3 CT
OUTPUT 1 - SOLID STATE TRIP (–)
OUTPUT 2 - TRIP RELAY (Common)
OUTPUT 3 - TRIP RELAY (Common)
OUTPUT 4 - TRIP RELAY (Common)
OUTPUT 5 - TRIP RELAY (Common)
OUTPUT 6 - AUXILIARY RELAY (Common)
OUTPUT 7 - AUXILIARY RELAY (N/O)
OUTPUT 7 - AUXILIARY RELAY (N/C)
OUTPUT 8 - AUXILIARY RELAY (Common)
OUTPUT 9 - SERVICE RELAY (N/O)
OUTPUT 9 - SERVICE RELAY (N/C)
GROUND - WINDING 2/3 CT
PHASE A - WINDING 1 CT
PHASE B - WINDING 1 CT
PHASE C - WINDING 1 CT
PHASE A - WINDING 2 CT
PHASE B - WINDING 2 CT
PHASE C - WINDING 2 CT
PHASE A - WINDING 3 CT
PHASE B - WINDING 3 CT
PHASE C - WINDING 3 CT
GROUND - WINDING 1/2 CT
745 FILTER GROUND
745 SAFETY GROUND
PHASE A - WINDING 1 CT
PHASE B - WINDING 1 CT
PHASE C - WINDING 1 CT
PHASE A - WINDING 2 CT
PHASE B - WINDING 2 CT
PHASE C - WINDING 2 CT
PHASE A - WINDING 3 CT
PHASE B - WINDING 3 CT
PHASE C - WINDING 3 CT
GROUND - WINDING 1/2 CT
CONTROL POWER (–)
CONTROL POWER (+)
3
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