
Multi-Function Control ETMFC610
http://www.entecene.co.kr
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HNOLOGY
8.5. Monitoring
Place the curser on “MONITERING” in GLOBAL SETTING menu, press [ENT] button to move
into this menu. This menu applies to both “Fault Indication type(FITYPE)” and “Protection
type(PROTYPE)” and can set up monitoring function for line condition.
8.5.1. Broken Conductor(46BC)
Place the curser on “BROKEN CONDUCT” in MONITORING menu, press [ENT] button to move
into this menu.
The broken conductor element detects when the ratio between the negative sequence current (I2)
and the positive sequence current (I1) of the ETMFC610 is larger than the operation setting
(pickup) value. Under normal conditions I2/I1 ratio is zero but when a fault occurs on the load, this
ratio of I2/I1 increases.
‘Broken Conductor’ protection element configuration is as below
.
Figure 8-48. Brocken Conductor(46BC) Function Block Diagram
.
[MONITORING]
>1.BROKEN CONDUCT
2.VOLTAGE
3.FREQUENCY
4.POWER
5.DEMAND
6.PHASE DIFFERENCE
7.SYNCHRO’ CHECK
8.OPEN PHASE
9.LIVE LINE BLOCK
10.FAULT LOCATOR
11.LOAD CURR’ ALARM
12.POWER FACTOR