Technical Data
54
Overvoltage protection (ANSI 59)
Item
Rang or Value
Tolerance
Voltage connection
Phase-to-phase voltages or
phase-to-earth voltages
≤ ±3 % setting or ±1 V
Phase to earth voltage
40 to 100 V, step 1 V
≤ ±3 % setting or ±1 V
Phase to phase voltage
80 to 200 V, step 1 V
≤ ±3 % setting or ±1 V
Reset ratio
0.90 to 0.99, step 0.01
≤ ±3 % setting
Time delay
0.00 to 60.00 s, step 0.01s
≤ ±1 % setting or +50 ms, at
120% operating setting
Reset time
<40ms
Synchro-check and voltage check (ANSI 25)
Item
Rang or Value
Tolerance
Operating mode
Synchronization check:
Synch-check
Energizing check, and
synch-check if energizing
check failure
Override
Energizing check:
Dead V4 and dead V
3Ph
Dead V4 and live V
3Ph
Live V4 and dead V
3Ph
Voltage threshold of dead line or
bus
10 to 50 V (phase to earth), step
1 V
≤ ± 3 % setting or 1 V
Voltage threshold of live line or
bus
30 to 65 V (phase to earth), step
1 V
≤ ± 3 % setting or 1 V
∆V-measurement Voltage
difference
1 to 40 V (phase-to-earth), steps
1 V
≤ ± 1V
Δf-measurement (f2>f1; f2<f1)
0.02 to 2.00 Hz, step, 0.01 Hz,
≤ ± 20 mHz
Δα-measurement (α2>α1;
α2<α1)
1 ° to 80 °, step, 1 °
≤ ± 3°
Minimum measuring time
0.05 to 60.00 s, step,0.01 s,
≤ ± 1.5 % setting value or +60
ms
Maximum synch-check
extension time
0.05 to 60.00 s, step,0.01 s,
≤ ± 1 % setting value or +50 ms