8.1.4. Inrush Restraint. Entec ETMFC610

Multi-Function Control ETMFC610

8.1.4. Inrush Restraint

http://www.entecene.co.kr

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;

[INRUSH RESTRAINT]

>1.INRUSH DURATION T

2.OTHERS

1) Inrush Duration Time

GROUP # / FAULT INDICTION / INRUSH RESTRAINT / INRUSH DURATION T / Phase

Range 0.00~600.00 sec

[INRUSH DURATION T]

>Phase: 2.00

Ground: 2.00

SEF: 2.00

Neg Seq’: 2.00

[0.00~600.00:0.01s]

Default 2.00 of load supply.

Step

Set the block time for inrush current of phase.

0.01sec

Phase fault is not detected during this setting time after the restoration

*. NOTE ) Setting for Ground, SEF and Neg Seq’ are same as Phase setting above.

EN HANCED TEC HNOLOGY 190