ABB REM 610 Technical Reference Manual page 53

1MRS 755537
Motor protection Relay
Technical Reference Manual
Table 4.1.4.13-6 Element 51N
Feature
Operation accuracy
• 1.0...10.0% I CT
n
• 10.0...100% I CT
n
Table 4.1.4.13-7 Element 46
Feature
Set pickup value, 46
• at IDMT characteristic
Pickup time, typical
Time/current characteristic
• IDMT
time constant, 46 TDIAL
Resetting time, typical/maximum
Drop-off/pick-up ratio, typical
Operate time accuracy
• 46 PICKUP + 0.065...4.0 x FLA ±5% of the
Operation accuracy
Disable of 46
Table 4.1.4.13-8 Element 46R
Feature
Trip value
Time/current characteristic
• definite time
operate time
Resetting time, typical
Drop-off/pick-up ratio, typical
Table 4.1.4.13-9 Element 66
Feature
Set restart disable value, 66
Countdown rate of start-up time
counter, 66 COOL/∆t
3)
Value
±5% of the set
pickup value
±3% of the set
pickup value
3)
Value
0.10...0.50 x FLA
100 ms
5...100
130/200 ms
0.95
calculated operate
time or ±100 ms
±5% of the set
pickup value
I < 0.12 x FLA or
I > 4.0 x FLA
4)
Value
NPS ≥ 75% of the
maximum phase
current
220 ms ±50 ms
100...200 ms
0.95
Value
5...500 s
2...250 s/h
REM 610
53