Entec ETMFC610 - Page 209

Multi-Function Control ETMFC610 http://www.entecene.co.kr
199
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HANCED
TEC
HNOLOGY
GROUP # / PROTECTION / TIME OC-PHA / (+)TIME OC-PHA / M.R.T
Range
0.00 ~ 10.00 sec
Default
0.00
Step
0.01 sec
T-C curve trip operation is faster than trip time, this set value is added
to T-C curve for more delay. This function can be useful for other
protective device and line fuse coordination.
GROUP # / PROTECTION / TIME OC-PHA / (+)TIME OC-PHA / Reset Method
Range
INST, LINEAR
Default
INST
Step
~
In case that a fault current is decreased under pickup level, (+) Phase
time overcurrent protection is reset.
 INST : After 1 cycle, Reset.
 LINEAR: When the fault value is reached at selected curve’s RT
(Reset characteristic constant) value, Reset.
GROUP # / PROTECTION / TIME OC-PHA / PHASE FAST / Low Set Definite Time
Range
0(OFF), 0.01 ~ 600.00 sec
Default
0(OFF),
Step
0.01 sec
Low set definite time is used to restrict a trip time to be a definite time
adjacent to a pickup current by T-C curve. When the trip time is greater
than the low set definite time, low set definite time is applied for
operation.
2) (-)TIME OC-PHA Setup
‘(-)TIME OC-PHA’ settings are very similar ‘(+)TIME OC-PHA’ time overcurrent setting.
[
(+)TIME OC
-
PHA
]
Curve: [US-VI]
Time Dial: 1.00
Time Add.: 0.00
>M.R.T: 0.00
Reset Method: INST
[0.00~10.00:0.01s]
[
(+)TIME OC
-
PHA
]
Curve: [US-VI]
Time Dial: 1.00
Time Add.: 0.00
M.R.T: 0.00
>Reset Method: INST
[INST/LINEAR]
[
(+)TIME OC
-
PHA
]
Curve: [US-VI]
Time Add.: 0.00
M.R.T: 0.00
Reset Method: INST
>Low Set DT: OFF
[0(OFF),0.01~600.00]