Siemens SIPROTEC 7SJ80

Synchrocheck 25
Modes of Operation
- Synchrocheck
Additional Release Conditions
- Live bus / dead line,
- Dead bus / live line,
- Dead bus and dead line
- Bypassing
Voltages
Maximum operating voltage V
max
20 V to 140 V (phase-to-phase) Increments 1 V
Minimum operating voltage V
min
20 V to 125 V (phase-to-phase) Increments 1 V
V< for dead line
V> for live line
1 V to 60 V (phase-to-phase)
20 V to 140 V (phase-to-phase)
Increments 1 V
Increments 1 V
Primary transformer rated voltage V2N 0.10 kV to 800.00 kV Increments 0.01 kV
Tolerances 2 % of pickup value or 2 V
Dropout Ratios approx. 0.9 (V>) or 1.1 (V<)
Permissible Difference
Voltages differences V2>V1; V2<V1
Tolerance
0.5 V to 50.0 V (phase-tophase)
1 V
Increments 0.1 V
Frequency Difference f2>f1; f2<f1
Tolerance
0.01 Hz to 2.00 Hz
20 mHz
Increments 0.01 Hz
Angle Difference α2 > α1; α2 < α1 2° to 80° Increments 1°
Tolerance 2°
Max. angle error 5° for Δf ≤ 1 Hz
10° for Δf >1 Hz
Matching
Vector group matching via angle
0° to 360° Increments 1°
Different voltage transformer V1/V2 0.50 to 2.00 Increments 0.01
Times
Minimum Measuring Time
approx. 80 ms
Maximum duration T
SYN DURATION
0.01 s to 1200.00 s
or ∞ (disabled)
Increments 0.01 s
Monitoring Time T
SUP VOLTAGE
0.00 s to 60.00 s Increments 0.01 s
Tolerance of all times 1 % of setting value or 10 ms
Measured Values of the Synchronism and Voltage Check
Reference voltage V1
- Range
- Tolerance
1)
in kV primary, in V secondary or in % V
Nom
10 % to 120 % of V
Nom
≤ 1 % of measured value, or 0,5 % V
Nom
4.21
Technical Data
4.21 Synchrocheck 25
SIPROTEC 4, 7SJ80, Manual 409
E50417-G1140-C343-A8, Edition 12.2017