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Table 10.27 – Directional overcurrent stages I
Pick-up current
Mode
Minimum voltage for the direction solving
Base angle setting range
Operation angle
Definite time function:
- Operating time
Start time
Reset time
Retardation time
Reset ratio
Transient over-reach, any τ
Inaccuracy:
- Starting (rated value IN= 1 .. 5A)
- Angle
- Operate time at definite time function
This is the instantaneous time i.e. the minimum total operational time including the fault
detection time and operation time of the trip contacts.
Technical Data
>>> and I
>>>> (67)
dir
dir
0.10 – 20.0 x I
MODE
Directional/non-directional
0.1 V
-180° to + 179°
±88°
DT
0.06
– 300.00 s (step 0.02 s)
Typically 60 ms
<95 ms
<50 ms
0.95
<10 %
±3% of the set value or ±0.5% of the rated
value
±2° U>5 V
±30° U>0.1 – 5.0 V
±1% or ±30 ms
857-UM001A-EN-P – July 2009
10-11
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