GE L60 Instruction Manual page 108

5.1 OVERVIEW
5
If the relay contains one CT/VT module, then only SRC1 is available and this will be used by 87PC function. If the relay
contains two CT/VT modules, the following table explains how to configure the sources for full functionality.
Table 5–1: SOURCE CONFIGURATION FOR PHASE COMPARISON
FUNCTION
Phase current F1 to F3 CT channels
(used for 87PC first current
and Breaker Failure 1)
Ground current F1 (Ground overcurrent)
Phase voltage
Auxiliary voltage
5-6
CT1
VT1
1PH
BF 1 BF 2
L60
SRC 1 SRC 2
Phase
comparison
SRC 1 SRC 2
SRC 1 SRC 3
Distance and
Synchrocheck 1
overcurrent
SRC 3 SRC 3
Figure 5–1: BREAKER-AND-A-HALF SCHEME
CT/VT MODULE 1 (TYPE 8P)
SRC 1 SRC 2
Not available
Not available
Not available Not available
Not available Not available
L60 Line Phase Comparison Relay
CB1 CB2
CT2
3PH
VT2
Protected
line
CT/VT MODULE 1 (TYPE 8F)
SRC 3
L1 to L3 CT channels
(used for 87PC second
current and Breaker
Failure 2). This source is
configurable only if a
second CT/VT module is
ordered.
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Single-phase bus VT for
synchrocheck
5 SETTINGS
831786A1.CDR
SRC 4
Sum of F1:F3 and L1:L3
(used for distance and
overcurrent)
---
Three-phase line VT for
distance and
synchrocheck
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GE Multilin