ABB REF 610 Technical Reference Manual page 61

1MRS 755535
Feeder Protection Relay
Technical Reference Manual - ANSI Version
Table 4.1.4.11-3 Element 49
Feature
Set full load current, FLA
ALARM
Set alarm level, 49
Trip level, 49 Trip
Time constant, τ
Operate time accuracy
• I/FLA >1.2
Table 4.1.4.11-4 Element 46
Feature
Set pickup value, 46
• at definite-time characteristic
Pickup time, typical
Time/current characteristics
• definite time
operate time, 46 TDLY s
Resetting time, maximum
Drop-off/pick-up ratio, typical
Operate time accuracy
• at definite-time characteristic
Operation accuracy
• 10...100%
Table 4.1.4.11-5 Element ARC and L>
Feature
Element ARC
Set current limit
• Arc 50P
• Arc 50N
Operate time
Resetting time
Operation accuracy
L>
Activation time of L>
Resetting time
1)
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.
Value
0.30...1.50 x
I (CT)
n
50...100%
100%
1...200 min
±2% of the set
operate time or
±1 s
Value
10...100%
100 ms
1...300 s
70 ms
0.90
±2% of the set
operate time or ±25
ms
±3% of the set
pickup value and ±1
unit
Value
0.5...35.0 x
I (CT)
n
5.0...400%
I (CT)
n
1)
< 15 ms
30 ms
±7% of the set
pickup value
< 15 ms
20 ms
REF 610
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