Multi-Function Control ETMFC610
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8.1.4. Inrush Restraint
ETMFC610 has inrush restraint function to prevent the malfunction by inrush current produced at
the restoration of load supply. Inrush restraint function setting can be set separately in phase,
ground, sensitive earth fault and negative sequence during the inrush time after the restoration of
load supply, FI(fault indicator) about phase, ground, sensitive earth fault and negative sequence is
not detected.
According to setting of
“Make use ‘I’”
, the condition to decide the restoration of load supply will
be changed. If “YES” is set, the decision is made when the load current becomes over 0.2% of the
rated current. If “NO” is set, the decision is made when the switch is closed (52A) and live line
status.
8.1.4.1. Inrush Restraint Setup
‘INRUSH RESTRAINT’ menu is sub-divided as follow;
1) Inrush Duration Time
GROUP # / FAULT INDICTION / INRUSH RESTRAINT / INRUSH DURATION T / Phase
Range
0.00~600.00 sec
Default
2.00
Step
0.01sec
Set the block time for inrush current of phase.
Phase fault is not detected during this setting time after the restoration
of load supply.
*. NOTE )
Setting for Ground, SEF and Neg Seq’ are same as Phase setting above.
[INRUSH DURATION T]
>Phase: 2.00
Ground: 2.00
SEF: 2.00
Neg Seq’: 2.00
[0.00~600.00:0.01s]
[INRUSH RESTRAINT]
>1.INRUSH DURATION T
2.OTHERS
