Synchronism and voltage check (optional)
Operating Modes
Operating modes
with automatic reclosure
Synchronism check
Live bus - dead line
Dead bus - live line
Dead bus and dead line
Bypassing
Or combination of the above
Synchronism Closing the circuit breaker under asynchronous power condi-
tions possible (with circuit breaker action time)
Operating modes
for manual closure
As for automatic reclosure,
independently selectable
Voltages
Maximum operating voltage 20 V to 140 V (phase-to-phase) Increments 1 V
U< for dead status 1 V to 60 V (phase-to-phase) Increments 1 V
U> for voltage present 20 V to 125 V (phase-to-phase) Increments 1 V
Tolerances 2 % of the pickup value or 1 V
Dropout to pickup ratio approx. 0.9 (U>) or 1.1 (U<)
ΔU measurement
Voltage difference
1.0 V to 60.0 V (phase-to-phase) Increments 0,1 V
Tolerance 1 V
Dropout to pickup ratio Approx. 1,05
Synchronous power conditions
Δφ measurement
2° to 80° Increments 1°
Tolerance 2°
Δf measurement 0.03 Hz to 2.00 Hz Increments 0,01 Hz
Tolerance 15 mHz
Enable delay 0,00 s to 30,00 s Increments 0.01 s
Asynchronous power conditions
Δf measurement
0.03 Hz to 2.00 Hz Increments 0,01 Hz
Tolerance 15 mHz
Max. angle error 5° for Δf ≤ 1 Hz
10° for Δf > 1 Hz
Synchronous/asynchronous limits 0,01 Hz
Circuit breaker operating time 0,01 s to 0,60 s Increments 0.01 s
Times
Minimum time for filtering the measured values
Approx. 80 ms
Maximum measuring time 0.01 s to 600.00 s; ∞ Increments 0.01 s
Tolerance of all timers 1 % of setting value or 10 ms
4.4
Technical Data
4.4 Synchronism and voltage check (optional)
SIPROTEC 4, 7VK61, Manual 243
C53000-G1176-C159-5, Edition 05.2018
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