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7SR18 Commissioning & Maintenance Guide
4.2
C
URRENT
Current Inputs:
Disable:
Map Pickup LED:
Apply 3-Phase balanced current to the relay; reduce the current in any one or two phases to a level below 60CTS
I setting. Measure the delay to operation.
Gradually reduce the current until the element resets.
Setting
60CTS Delay
60CTS Inps
60CTS Vnps
Unrestricted Page 46 of 54
T
S
RANSFORMER
UPERVISION
Figure 4.2-1
Current Transformer Supervision
I
(I
), I
(I
), I
L1
A
L2
B
L3
51N, 46IT, 46DT, 46BC
60CTS - Self Reset
(60CTS)
(I
)
C
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