ABB Relion 650 Series Product Manual page 27

Busbar protection REB650
Version 1.1 ANSI
Differential protection
Table 21. 1Ph High impedance differential protection HZPDIF (87)
Function
Operate voltage
Reset ratio
Maximum continuous voltage
Operate time
Reset time
Critical impulse time
ABB Power Grids
M13081-1 v6
Range or value
(20-400) V
I=V/R
>95%
V>Pickup
15 ms typically at 0 to 10 x V
90 ms typically at 10 to 0 x V
2 ms typically at 0 to 10 x V
© Copyright 2011 ABB Power Grids. All rights reserved
2 /series resistor ≤200 W
d
d
d
1MRK 505 265-BUS B
Accuracy
± 1.0% of I
n
-
-
-
-
-
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