13.Technical Data On Protection Functions - ABB REM 610 Technical Reference Manual

REM 610
4.1.4.13.
50
Motor Protection Relay
Technical Reference Manual
Technical data on protection functions
Table 4.1.4.13-1 Stage θ>
Feature
Set safe stall time, t
6x
Set ambient temperature, T
Set restart inhibit level, θ
>
i
Set prior alarm level, θ
>
a
>
Trip level, θ
t
Time constant multiplier, K
Weighting factor, p
Operate time accuracy
• >1.2 x I
n
Table 4.1.4.13-2 Stage I
Feature
Set start value, I >
s
• at definite-time characteristic
Start time, typical
Time/current characteristic
• definite-time
operate time, t >
s
Resetting time, typical/maximum
Retardation time
Drop-off/pick-up ratio, typical
Operate time accuracy at definite
time characteristic
Operation accuracy
Table 4.1.4.13-3 Stage I
Feature
Set start-up current for motor, I
Start time, typical
• at start criterion I >I
L s
Set start-up time for motor, t
Resetting time, typical/maximum
Drop-off/pick-up ratio, typical
• at start criterion I >I
L s
Operation accuracy
Shortest possible operate time
Value
1)
2.0...120 s
0...70°C
amb
20...80%
50...100%
100%
1...64
c
20...100%
±5% of the set
operate time or
±1 s
2)
>
s
Value
1.00...10.0 x I
n
55 ms
0.30...80.0 s
35/50 ms
30 ms
0.96
±2% of the set
operate time or
±25 ms
±3% of the set
start value
2 2)
x t
s s
Value
> 1.00...10.0 x I
s n
100 ms
> 0.30...80.0 s
s
180/250 ms
0.96
±10% of the
calculated operate
time ±0.2 s
300 ms
1MRS 752263-MUM