ABB Relion 650 Series Product Manual page 47

Transformer protection RET650
Version 2.2
Table 18. Auxiliary DC supply voltage influence on functionality during operation
Dependence on
Ripple, in DC auxiliary voltage
Operative range
Auxiliary voltage dependence, operate
value
Interrupted auxiliary DC voltage
Interruption
interval
0–50 ms
0–∞ s
Restart time
Table 19. Frequency influence (reference standard: IEC 60255–1)
Dependence on
Frequency dependence, operate value
Harmonic frequency dependence (20% content)
Harmonic frequency dependence for high impedance differential
protection (10% content)
Harmonic frequency dependence for restricted earth fault protection
Harmonic frequency dependence for overcurrent protection
Table 20. Frequency influence (reference standard: IEC 60255–1)
Dependence on
Frequency dependence, operate value
Frequency dependence for differential protection
Harmonic frequency dependence (20% content)
Harmonic frequency dependence for high impedance differential
protection (10% content)
Harmonic frequency dependence for restricted earth fault protection
(20% content)
Hitachi Power Grids
Reference value Within nominal
range
max. 2% 15% of EL
Full wave rectified
±20% of EL
24-60 V DC ± 20%
90-250 V DC ± 20%
Within nominal range
f
r
f
r
2
2
2
2
Within nominal range
f
r
f
r
f
r
f
r
2
2nd, 3rd and 5
2
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Influence
0.01%/%
0.01%/%
No restart
Correct behaviour at power down
< 300 s
±2.5 Hz for 50 Hz
±3.0 Hz for 60 Hz
nd rd th
, 3 and 5 harmonic of f
r
nd th
, 3rd and 5 harmonic of f
r
nd rd th
, 3 and 5 harmonic of f
r
nd rd th
, 3 and 5 harmonic of f
r
±2.5 Hz for 50 Hz
±3.0 Hz for 60 Hz
±2.5 Hz for 50 Hz
±3.0 Hz for 60 Hz
nd rd th
, 3 and 5 harmonic of f
r
th
harmonic of f
r
nd rd th
, 3 and 5 harmonic of f
r
1MRK 504 172-BEN G
Influence
±1.0%/Hz
±1.0%
±10.0%
±3.0%
±3.0%
Influence
±1.0%/Hz
±2.0%/Hz
±1.0%
±5.0%
±3.0%
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