Synchronism And Voltage Check (Dead-Line / Dead-Bus Check) - Siemens siprotec 7SA6 User Manual

Technical Data

10.13 Synchronism and Voltage Check (Dead-line / Dead-bus Check)

Operating Modes
Voltages
∆U-Measurement
Synchronous
System Conditions
Non-Synchronous
System Conditions
Times
10-30
Operating modes
with automatic reclosure
Synchronism
Control programs for manual closing
Minimal operating voltage
Maximum operating voltage
U> for dead-line / dead-bus check
U< for live-line/ live-bus check
Tolerances
Drop-off to pick-up ratios
Voltage difference
Tolerance
∆ϕ−measurement
Tolerance
∆f-measurement
Tolerance
Release delay
∆f-measurement
Tolerance
Threshold synchronous /
non-synchronous
Circuit-breaker operating time
Minimum measuring time
Maximum time delay
Tolerance of all timers
Synchronism check,
dead-line / live-bus
dead-bus / live-line,
dead-bus and dead-line
bypassing or similar combinations of the
above
Closing possible under non-synchronous
system conditions
(with consideration of circuit-breaker
operating time)
as for automatic reclosure, independently
selectable
1 V
20 V to 140 V (phase-to-phase)
(steps 1 V)
1 V to 60 V (phase-to-phase)
(steps 1 V)
20 V to 125 V (phase-to-phase)
(steps 1 V)
2 % of pick-up value or 2 V
approx. 0.9 (U>) or 1.1 (U<)
1 V to 40 V (phase-to-phase)
(steps 0.1 V)
1 V
2° to 60°
2°
0.03 Hz to 2.00 Hz
(steps 0.01 Hz)
15 mHz
0.00 s to 30.00 s
(steps 0.01 s)
0.03 Hz to 2.00 Hz
(steps 0.01 Hz)
15 mHz
0.01 Hz
0.01 s to 0.60 s
approx. 80 ms
0.01 s to 600.00 s; ∞
(steps 0.01 s)
1 % of set value or 10 ms
(steps 1°)
7SA6 Manual
C53000-G1176-C133-1