ABB REM 610 Technical Reference Manual page 131

1MRS755537
Motor Protection Relay
Technical Reference Manual - ANSI Version
In this case, a safe stall time setting of 23 seconds is selected from the trip
curves at prior load 1 x FLA, permitting a start-up time slightly longer than
the one stated by the motor manufacturer; see the figure below.
t/s
50
40
30
20
10
5
4
3
2
1.05
1
1 2
Fig. 6.1.2.2.-2 Selected safe stall time 23 s
2.5
3 4 5 6 8
REM 610 REM 610
t
6x
[s]
120
60
30
20
15
10
5
10
I/I
n
A051488
131