Element Arc And L>; Relative Sensitivity Of Lens Sensors - ABB REF610 Technical Reference Manual

REF610 REF610
72
Feeder Protection Relay
Technical Reference Manual - ANSI Version
Feature
Operation accuracy
10...100%
*
Table 5.1.4.11.-5 Element ARC and L>
Feature
Element ARC
Set trip value ArcI>
Operate time
ArcI >
0
Operate time
Resetting time
Operation accuracy
L>
Activation time of L>
Resetting time
a)
Applies only if a non-trip output contact (SO1...5) is used. If a trip output contact (PO1...3) is used, 2...3
ms will be added.
Fig. 5.1.4.11.-1

Relative sensitivity of lens sensors

Value
±3% of the set pickup value and ±1 unit
Value
0.5...35.0 x I (CT)
n
a)
< 15 ms
5.0...800% I (CT)
n
a)
< 17 ms
30 ms
±7% of the set pickup value
< 15 ms
20 ms
1MRS755535