Multi-Function Control ETMFC610
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8.5.8. Open Phase
This function determines phase as open phase when one or two phase voltages are more than Off
Level and determines as normal if that all three phase voltages are higher than On Level. Dead line
normal condition it does not indicate open phase.
When detecting the open phase, the corresponding LED of the open phase LED (VA / VR, VB /
VS, VC / VT) on the front panel lights up.
The setting items of OPEN PHASE element are same as below.
GROUP # / MONITORING / OPEN PHASE / Function
Range
DISABLE, ENABLE
Default
DISABLE
Step
~
Set whether it activates open phase function to detect open phase or
not.
GROUP # / MONITORING / OPEN PHASE/ On Level
Range
0.10~1.40 xVT
Default
0.80
Step
0.01 xVT
Set voltage level to detect open of phase.
GROUP # / MONITORING / OPEN PHASE/ Off Level
Range
0.10~1.40 xVT
Default
0.50
Step
0.01 xVT
Set voltage level to detect loss of phase.
GROUP # / MONITORING / OPEN PHASE/ Time Delay
Range
0.00~600.00 sec
Default
4.00
Step
0.01 sec
Set delay time to detect open phase.
[OPEN PHASE]
>Function: DISABLE
On Level: 0.80
>
Off Level: 0.50
Time Delay: 4.00
[DISABLE,ENABLE]
[OPEN PHASE]
Function: DISABLE
>On Level: 0.80
>
Off Level: 0.50
Time Delay: 4.00
[0.10~1.40:0.01 xVT]
[OPEN PHASE]
Function: DISABLE
On Level: 0.80
>Off Level: 0.50
Time Delay: 4.00
[0.10~1.40:0.01 xVT]
[OPEN PHASE]
Function: DISABLE
On Level: 0.80
Off Level: 0.50
>Time Delay: 4.00
[0.00~600.00:0.01s]