Lenze 8400 protec, Руководство по оборудованию

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Technical data
Overcurrent operation
4
57
EDS84DPS424 EN 5.0
The curves of typical load functions and the simulation of the "Ixt" function are shown in
the following illustration:
t 0
100
2
0
1
I [%]
aN8
3
D
t
1

‚
D
t
2
D
t
3
D
t
4
8400IZ180
Fig. 4−2 Overcurrent capacity at 45° C
Pulse load (15 s cycle) Calculation equation:
Peak current
A @ D t
1
) B @ D t
2
D t
1
) D t
2
x 100%
Unloading current
D t
1
Peak current period
D t
2
Unloading current period
Permanent load (180 s cycle) Calculation equation:
Peak current
C @ D t
3
) D @ D t
4
D t
3
) D t
4
x 100%
Unloading current
D t
3
Peak current period
D t
4
Unloading current period
I
arx
Rated value of continuous output
current