Hitachi Relion 670 Series Product Manual page 71

Phasor measurement unit RES670
Version 2.2
Table 45. General current and voltage protection CVGAPC, continued
Function
Undervoltage:
Critical impulse time
Impulse margin time
Hitachi Energy
Range or value
10 ms typically at 1.2 x U to 0.8 x
set
U
set
15 ms typically
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Accuracy
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1MRK 511 410-BEN P
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