Hitachi Relion 670 Series Product Manual page 73

Phasor measurement unit RES670
Version 2.2
Table 49. Current based delta supervision DELISPVC
Function
Minimum current
DelI>
Second harmonic blocking
Third harmonic restraining
Operate time for changeat Ir to (Ir + 2 x DelI>)at Ir to
(Ir + 5 x DelI>)
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Range or value
(5.0 - 50.0)% of IBase
(10.0 - 500.0)% of IBase
(5.0 - 100.0)% of
fundamental
(5.0 - 100.0)% of
fundamental
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Accuracy
±1.0% of Ir at I ≤ Ir±1.0% of I at I > Ir
Instantaneous 1 cycle & Instantaneous 2 cycle mode:
±20% of Ir at I ≤ Ir±20% of I at I > Ir
RMS & DFT Mag mode:
±10% of Ir at I ≤ Ir±10% of I at I > Ir
±2.0% of Ir
±2.0% of Ir
Instantaneous 1 cycle & Instantaneous 2 cycle mode -
<20ms
RMS & DFT Mag mode - <30ms
1MRK 511 410-BEN P
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