GE L60, Instruction Manual, Page: 51 / 498

GE Multilin L60 Line Phase Comparison Relay 3-9
3 HARDWARE 3.2 WIRING
3
Figure 3–10: ZERO-SEQUENCE CORE BALANCE CT INSTALLATION
b) VT INPUTS
The phase voltage channels are used for most metering and protection purposes. The auxiliary voltage channel is used as
input for the Synchrocheck and Volts/Hertz features.
The L60 uses a special CT/VT module not available on other UR-series relays. This Type 8P module has four current
inputs and special communications inputs/outputs for interfacing with PLCs. The communications interface requires an
external DC source (station battery) to drive inputs/outputs as shown in the
L60 Channel Communications section in this
chapter.
Figure 3–11: CT/VT MODULE WIRING
Wherever a tilde “~” symbol appears, substitute with the Slot Position of the module.
5a 5b 5c 6a 6b 6c 7a 8a 7b 8b 7c 8c
CURRENT INPUTS L60 COMMS. INTERFACE INPUTS/OUTPUTS
Transmit
CHANNEL 1
Transmit
CHANNEL 2
Receive
CHANNEL 1
Receive
CHANNEL 2
8P
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
1a 1b 1c 2a 2b 2c 3a 4a 5a 6a 7a 8a 3b 4b 5c 6c 7c 8c 3c 4c
CURRENT INPUTS
8F
VOLTAGE INPUTS
VA VB VC
VX
VA VB VC VX
IA IC IB IG
IA5 IC5 IB5 IG5 IA1 IC1 IB1 IG1
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
1a 1b 1c 2a 2b 2c 3a 4a 3b 4b 3c 4c
IA
Tx1N Tx2N
BA
TT+
BA
TT+
Tx1P Tx2P Rx1N Rx2N
BA
TT
-
BA
TT
-
Rx1P Rx2P
IC IB
IG
IA5 IC5 IB5 IG5
IA1 IC1 IB1
IG1
827831AD-X1.CDR
NOTE