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3-22
L60 Line Phase Comparison Relay
GE Multilin
3.2 WIRING
3 HARDWARE
3
3.2.10 L60 CHANNEL COMMUNICATIONS
As described earlier in this chapter, L60 communications channels reside on the special CT/VT module (type 8P). This
module allows for all possible 87PC scheme combinations (such as dual phase comparison or single-phase comparison, 2-
terminal or 3-terminal applications) in one module. The customer can upgrade or change the scheme at any time. The L60
channel interface requires an external battery to drive inputs and outputs. The module can be used with any battery volt-
age. However, the battery voltage must be reflected in the
CONTROL ELEMENTS
PHASE COMPARISON ELEMENTS 87PC
SCHEME
87PC CH1(2) RX VOLT
settings, which define the acceptable voltage threshold received from the PLC. The L60
communications outputs are MOSFETs and inputs are implemented with optocouplers, excluding any galvanic connection
between PLC connections and the relay boards.
Figure 3–24: L60 TO PLC CONNECTIONS FOR A TWO-TERMINAL LINE
831784A1.CDR
COMMS INTERF
ACE INPUTS/OUTPUTS
~
~
~
~
~
~
~
~
~
~
~
~
BATT+
Tx1P
Tx1N
Tx Positive Ch 1
BATT-
Rx1P
Rx1N
BATT+
Tx2P
Tx2N
BATT-
Rx2P
Rx2N
L60
STATION
BATTERY
PLC
Rx Positive Ch 1
Tx Negative Ch 1
Rx Negative Ch 1
Common (+) Ch 1
Common (-) Ch 1
COMMS INTERF
ACE INPUTS/OUTPUTS
~
~
~
~
~
~
~
~
~
~
~
~
5a
5b
5c
6a
6b
6c
7a
8a
7b
8b
7c
8c
BATT+
Tx1P
Tx1N
Tx Positive Ch 1
BATT-
Rx1P
Rx1N
BATT+
Tx2P
Tx2N
BATT-
Rx2P
Rx2N
L60
STATION
BATTERY
PLC
Rx Positive Ch 1
L60 Comms 1
Single-phase
Comparison
5a
5b
5c
6a
6b
6c
7a
8a
7b
8b
7c
8c
L60 Comms 2
Dual-phase
Comparison
Summary of Contents for L60
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Page 24: ...1 14 L60 Line Phase Comparison Relay GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1...
Page 42: ...2 18 L60 Line Phase Comparison Relay GE Multilin 2 2 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2...
Page 470: ...D 10 L60 Line Phase Comparison Relay GE Multilin D 1 PROTOCOL APPENDIXD D...
Page 482: ...E 12 L60 Line Phase Comparison Relay GE Multilin E 2 DNP POINT LISTS APPENDIXE E...
Page 498: ...x L60 Line Phase Comparison Relay GE Multilin INDEX Z ZERO SEQUENCE CORE BALANCE 3 9...