L60 Channel Communications - GE L60 Instruction Manual
Line phase comparison system
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Also See for L60:
- Instructions manual (768 pages) ,
- Instruction manual (736 pages) ,
- Communications manual (532 pages)
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CHAPTER 3: INSTALLATION
WIRING
Figure 3-23: Options for the IRIG-B connection
3
Using an amplitude-modulated receiver causes errors up to 1 ms in event time stamping.
L60 channel communications
3.3.10
As described earlier in this chapter, L60 communication 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 scheme can be upgraded or changed at any time. The L60
channel interface requires an external battery to drive inputs and outputs. The module can be used with any battery
voltage. However, the battery voltage must be reflected in the
GROUPED ELEMENTS SETTING GROUP 1(6) PHASE
settings, which define the acceptable voltage threshold
COMPARISON ELEMENTS 87PC SCHEME 87PC CH1(2) RX VOLT
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.
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
3-25
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