GE Multilin 745

Typical Wiring745
Transformer Management Relay
Installation
http://www.GEindustrial.com/multilin
3–6
GE Multilin
! indicates high side of CT and VT terminals
Table 3–1: Rear Terminal Assignments
Term. Description Term. Description
Analog Interface Outputs and Ground CT N2
A1 Analog Input + E1 Output 1: Solid State Trip (+)
A2 Analog Input – E2 Output 2: Trip Relay (NO)
A3 Tap Position (+) E3 Output 3: Trip Relay (NO)
A4 Tap Position (–) E4 Output 4: Trip Relay (NO)
A5 Analog Output (Common) E5 Output 5: Trip Relay (N/)
A6 Analog Output 1 (+) E6 Output 6: Auxiliary Relay (NO)
A7 Analog Output 2 (+) E7 Output 6: Auxiliary Relay (NC)
A8 Analog Output 3 (+) E8 Output 7: Auxiliary Relay (NO)
A9 Analog Output 4 (+) E9 Output 8: Auxiliary Relay (NO)
A10 Analog Output 5 (+) E10 Output 8: Auxiliary Relay (NC)
A11 Analog Output 6 (+) E11 Output 9: Service Relay (Common)
A12 Analog Output 7 (+) E12 Ground: Winding 2/3 CT
Communications and RTD Inputs Outputs and Ground CT N2
B1 Computer RS485 (+) / RS422 (Rx+) F1 Output 1: Solid State Trip (–)
B2 Computer RS485 (–) / RS422 (Rx–) F2 Output 2: Trip Relay (Common)
B3 Computer RS485 (Common) /
RS422 (Common)
F3 Output 3: Trip Relay (Common)
B4 RS422 (Tx+) F4 Output 4: Trip Relay (Common)
B5 RS422 (Tx–) F5 Output 5: Trip Relay (Common)
B6 External RS485 (+) F6 Output 6: Auxiliary Relay (Common)
B7 External RS485 (–) F7 Output 7: Auxiliary Relay (NO)
B8 IRIG-B + F8 Output 7: Auxiliary Relay (NC)
B9 IRIG-B – F9 Output 8: Auxiliary Relay (Common)
B10 RTD 1 Hot F10 Output 9: Service Relay (NO)
B11 RTD 1 Compensation F11 Output 9: Service Relay (NC)
B12 RTD 1 Return F12 Ground: Winding 2/3 CT !
Logic Inputs 9 to 16 and VT Input CT Inputs and 745 Grounding
C1 Logic Input 9 (+) G1 Phase A: Winding 1 CT
C2 Logic Input 10 (+) G2 Phase B: Winding 1 CT
C3 Logic Input 11 (+) G3 Phase C: Winding 1 CT
C4 Logic Input 12 (+) G4 Phase A: Winding 2 CT
C5 Logic Input 13 (+) G5 Phase B: Winding 2 CT
C6 Logic Input 14 (+) G6 Phase C: Winding 2 CT
C7 Logic Input 15 (+) G7 Phase A: Winding 3 CT
C8 Logic Input 16 (+) G8 Phase B: Winding 3 CT
C9 Reserved G9 Phase C: Winding 3 CT
C10 Reserved G10 Ground: Winding 1/2 CT
C11 VT Input ! G11 745 Filter Ground
C12 VT Input G12 745 Safety Ground
Logic Inputs 1 to 8 and Dedicated Inputs CT and VT Inputs / Power
D1 Logic Input 1 (+) H1 Phase A: Winding 1 CT !
D2 Logic Input 2 (+) H2 Phase B: Winding 1 CT !
D3 Logic Input 3 (+) H3 Phase C: Winding 1 CT !
D4 Logic Input 4 (+) H4 Phase A: Winding 2 CT !
D5 Logic Input 5 (+) H5 Phase B: Winding 2 CT !
D6 Logic Input 6 (+) H6 Phase C: Winding 2 CT !
D7 Logic Input 7 (+) H7 Phase A: Winding 3 CT !
D8 Logic Input 8 (+) H8 Phase B: Winding 3 CT !
D9 Setpoint Access (+) H9 Phase C: Winding 3 CT !
D10 Setpoint Access (–) H10 Ground: Winding 1/2 CT !
D11 Logic Power Out (+) H11 Control Power (–)
D12 Logic Power Out (–) H12 Control Power (+)