Moeller ZB12 Series, Hardware And Engineering

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Configuration
40
05/05 AWB2300-1527D/GB
Example: I
A
/ I
N
= 6, t
E
= 10 s
Figure 6: Tripping characteristics of the motor-protective relay
The motor is reliably protected.
Short-circuit protection of the motor-protective
relays
The motor-protective relays are short-circuit protected by
means of fuses. When the relay is mounted directly onto a
contactor relay, the corresponding primary fuse of the
contactor relay is taken into account accordingly.
1
0.1
0.2
0.4
0.6
0.8
1
2
4
6
8
10
20
40
1
2
4
6
8
10
2 3 4 5 6 7 8 9 10
J
min
s
N
1
i
Caution!
Only co-ordination type “2” is permissible for the
protection of EEx e motors.