Aux Dc Supply Voltage Influence On Functionality During Operation; Frequency Influence - ABB RED670 Product Manual

Line differential protection RED670 2.1 IEC
Product version: 2.1
Table 21. 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 22. Frequency influence (reference standard: IEC 60255–1)
Dependence on
Frequency dependence, operate value
Frequency dependence for distance protection operate value
Harmonic frequency dependence (20% content)
Harmonic frequency dependence for distance protection (10% content)
Harmonic frequency dependence for high impedance differential
protection (10% content)
Harmonic frequency dependence for overcurrent protection
ABB
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
f
r
f
r
2
2
2
2
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
±2.5 Hz for 50 Hz
±3.0 Hz for 60 Hz
nd , 3 rd and 5 th harmonic of f
r
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
1MRK 505 346-BEN -
Influence
±1.0% / Hz
±2.0% / Hz
±2.0%
±10.0%
±10.0%
±3.0% / Hz
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