Hitachi Relion 670 Series Product Manual page 53

Phasor measurement unit RES670
Version 2.2
Table 22. 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 23. Frequency influence (reference standard: IEC 60255–1)
Dependence on
Frequency dependence, operate value
Harmonic frequency dependence (20% content)
Hitachi Energy
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
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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
1MRK 511 410-BEN P
Influence
±1.0%/Hz
±2.0%
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