Iskra FPC 200 - Page 39

Functionality
USER MANUAL FPC 200 - 3/2017 39
2.3.4.4 Setting parameters
Parameter
Range
Description
Enabled
No
Yes
Enabling protection function.
Operate mode
Off
On
Enabling protection function separately for each group level.
Pickup value
0,1 … 0,95 … 2,00 U
n
Value at which fault conditions are considered.
Trip delay
0,00 … 2,00 … 300,00 s
Delay of trip signal
Pickup delay
0,00 … 5,00 … 1000 ms
Time stabilization of fault detection. As a filter of short
disturbances on measuring circuits. Time before protection starts.
Drop-out delay
0,00 … 0,20 … 60,00 s
Time stabilization of pickup signal. Time when the monitored value
is outside the operating range, but the protection does not stop
yet.
Drop-out ratio
1,01 … 1,05 … 3,00 U
p
Drop-out value below which the protection drops.
Pickup block
None
Variable 1
Variable 2
Variable 3
Variable 4
Source of blocking signal.
Table 26: Positive sequence undervoltage protection function parameters.
2.3.4.5 Counters
Name
Description
Pickup
Total consecutive number of pickup signals.
Trip
Consecutive number of trip signals.
Table 27: Counters presented in positive sequence under voltage protection.