ABB RET670 - Auxiliary DC Supply Voltage Influence on Functionality; Frequency Influence

Table 16. Auxiliary DC supply voltage influence on functionality during operation
Dependence on Reference value Within nominal
range
Influence
Ripple, in DC auxiliary voltage
Operative range
max. 2%
Full wave rectified
15% of EL 0.01% / %
Auxiliary voltage dependence, operate
value
±20% of EL 0.01% / %
Interrupted auxiliary DC voltage 24-60 V DC ± 20%
90-250 V DC ±20%
Interruption interval
0–50 ms
No restart
0–∞ s Correct behaviour at power down
Restart time <300 s
Table 17. Frequency influence (reference standard: IEC 60255–1)
Dependence on
Within nominal range Influence
Frequency dependence, operate value f
r
±2.5 Hz for 50 Hz
f
r
±3.0 Hz for 60 Hz
±1.0% / Hz
Frequency dependence for distance protection operate value f
r
±2.5 Hz for 50 Hz
f
r
±3.0 Hz for 60 Hz
±2.0% / Hz
Harmonic frequency dependence (20% content)
2
nd
, 3
rd
and 5
th
harmonic of f
r
±2.0%
Harmonic frequency dependence for distance protection (10% content)
2
nd
, 3
rd
and 5
th
harmonic of f
r
±10.0%
Harmonic frequency dependence for high impedance differential
protection (10% content)
2
nd
, 3rd and 5
th
harmonic of f
r
±10.0%
Harmonic frequency dependence for overcurrent protection
2
nd
, 3
rd
and 5
th
harmonic of f
r
±3.0% / Hz
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
50 ABB