P746/EN ST/G31
Settings
(ST) 4-
10
MiCOM
P746
ST
Setting Range
Menu Text
Default Setting
Min. Max.
Step Size
V2> Set
10.00 V
1.000 V
110.0 V
1.000 V
If “V2> Status” is enabled, pickup setting for second stage of overvoltage element.
V2> PickUpTimer
0.000 s
0.000 s
10.00 s
2.000 ms
If “V2> Status” is enabled, sets the minimum pickup for first stage of overvoltage timer.
VN> Status
Disabled
Disabled / Enabled
To enable (activate) or disable (turn off) the residual voltage check.
VN> Set
10.00 V
1.000 V
80.00 V
1.000 V
If “VN> Status” is enabled, pickup setting for residual voltage element..
VN> PickUpTimer
0.000 s
0.000 s
10.00 s
2.000 ms
If “VN> Status” is enabled, sets the minimum pickup for residual voltage timer.
Ph Comp PU ratio
50%
5%
250%
1%
Phase comparison is used to define the minimum current to be included in the phase
comparison algorithm (see section P746/EN AP).
1.2.3
Dead Zone Overcurrent configuration
Setting Range
Menu Text
Default Setting
Min. Max.
Step Size
DEAD ZONE OC
I> Status
I> Status
Disabled
Disabled / Enabled
To enable (activate) or disable (turn off) the overcurrent check.
I> Current Set
120.0 %
10.00 %
400.0 %
1 %
Pick-up setting for overcurrent element.
I> Time Delay
50.00 ms
0.000 s
100.0 s
10.00 ms
Sets the time-delay for the overcurrent element.
1.2.4
Non directional Phase overcurrent protection
The overcurrent protection included in the P746 relay provides two stages non-directional
three-phase overcurrent protection with independent time delay characteristics. All
overcurrent settings apply to all three phases but are independent for each of the four
stages.
The first stage of overcurrent protection has time-delayed characteristics which are
selectable between inverse definite minimum time (IDMT), or definite time (DT). The second
stage has definite time characteristics only.
Содержание MiCOM P746
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Страница 26: ...P746 EN TD G31 Technical Data MiCOM P746...
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