Table 1055: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%
100-250 V DC
±20%
Interruption
interval
0–50 ms
No restart
0–∞ s Correct behaviour at power
down
Restart time < 300 s
Table
1056:
Frequency influence (reference standard: IEC 60255–1)
Dependence on Within nominal range Influence
Frequency dependence, operate value f
n
±2.5 Hz for 50 Hz
f
n
±3.0 Hz for 60 Hz
±1.0%/Hz
Frequency dependence for distance
protection operate value
f
n
±2.5 Hz for 50 Hz
f
n
±3.0 Hz for 60 Hz
±2.0%/Hz
Harmonic frequency dependence (20%
content)
2
nd
, 3
rd
and 5
th
harmonic of f
n
±2.0%
Harmonic frequency dependence for
distance protection (10% content)
2
nd
, 3
rd
and 5
th
harmonic of f
n
±10.0%
Harmonic frequency dependence for
distance protection (10% content)
2nd, 3rd and 5
th
harmonic of f
n
±10.0%
Harmonic frequency dependence for high
impedance differential protection (10%
content)
2
nd
, 3rd and 5
th
harmonic of f
n
±10.0%
Harmonic frequency dependence for
overcurrent protection
2
nd
, 3
rd
and 5
th
harmonic of f
r
±3.0%
1MRK 502 066-UUS B Section 22
IED hardware
1353
Technical manual