7 Technical data
LS Open Loop Vector Motor 4H42, 4H71, 4H72 Manual Supplement
za-o.2.8.41-us-1.1
June 2022
Page 27
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7.2
Main fuses
120 Hz
Hoist
motor
Trolley
motor
208 - 230 V
460 V
Fuse
[A]
4H42
4F18
45
25
4H71
4F18
60
35
4H71
4F38
70
40
4H72
4F38
90
45
7.3
Cable cross-sections and cable lengths
●
The maximum permitted cable lengths between the frequency converter and the
motor for the standard insulation of the motors (1500 V peak and 3500 V/µs) are 20
m for a nominal motor voltage of up to 480 V.
●
For higher nominal voltages and longer cable lengths, install a dU/dt filter or sine filter
between the frequency converter and the motor and design the wire cross-sections
for a maximum voltage drop of 2.5%.
Summary of Contents for 4H42
Page 2: ......
