3-28
L60 Line Phase Comparison System
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,
two-terminal or three-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 bat-
tery voltage. However, the battery voltage must be reflected in the
GROUPED ELEMENTS
ÖØ
SETTING GROUP 1(6)
Ö
PHASE
COMPARISON ELEMENTS
Ö
87PC SCHEME
ÖØ
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 3–28: L60 TO PLC CONNECTIONS FOR A TWO-TERMINAL LINE
The communications circuitry has the following characteristics for the transmitter and receiver.
Transmitter characteristics:
•
Operating voltage range: 0 to 300 V DC (typical points: 15 V, 48 V, 125 V, 250 V).
•
Output current limitation: 100 mA (maximum), 30 mA (nominal).
Receiver characteristics:
•
Input voltage range: 0 to 300 V DC.
•
Input impedance: 25 kohms
.
•
Input current: 10 mA at 250 V, 5 mA at 125 V, 2 mA at 48 V.
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 UR series
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Page 12: ...xii L60 Line Phase Comparison System GE Multilin TABLE OF CONTENTS ...
Page 32: ...1 20 L60 Line Phase Comparison System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 54: ...2 22 L60 Line Phase Comparison System GE Multilin 2 2 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Page 438: ...7 8 L60 Line Phase Comparison System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Page 478: ...8 40 L60 Line Phase Comparison System GE Multilin 8 3 FAULT LOCATOR 8 THEORY OF OPERATION 8 ...
Page 502: ...A 10 L60 Line Phase Comparison System GE Multilin A 1 PARAMETER LIST APPENDIXA A ...
Page 584: ...B 82 L60 Line Phase Comparison System GE Multilin B 4 MEMORY MAPPING APPENDIXB B ...
Page 622: ...D 10 L60 Line Phase Comparison System GE Multilin D 1 PROTOCOL APPENDIXD D ...
Page 634: ...E 12 L60 Line Phase Comparison System GE Multilin E 2 DNP POINT LISTS APPENDIXE E ...
Page 642: ...F 8 L60 Line Phase Comparison System GE Multilin F 3 WARRANTY APPENDIXF F ...