Electrical connection
6.8 Final checks
1LE5, 1PC4 shaft height 315/355
72
Operating Instructions, 10/2020, A5E41454666A
Table 6- 6
Maximum voltage peaks at the motor terminals for motors specifically designed for converter operation (e.g.
VSD 10)
Rated motor voltage
V
Maximum peak voltage at the motor terminals
Û
phase-to-phase
V
pk
Û
phase-to-ground
V
pk
DC link U
DC
V
≤
500 V
1600
1400
750
> 500 V to 690 V
2200
1500
1080
Depending on the step height, the voltage rise times for the individual voltage steps in the
line-to-ground voltage at the motor end of the cable must not fall below the following values.
Table 6- 7
Rise times as a function of voltage level
Step height
V
Minimum rise time t
r
ns
900
100
1050
200
1260
400
6.8
Final checks
Before closing the terminal box/terminal base of the machine enclosure, check the following:
•
Establish the electrical connections in the terminal box in accordance with the information
in this documentation.
•
Maintain the air clearances between non-insulated parts as described in Chapter Minimum
air clearances. (Page 66)
•
Avoid protruding wire ends.
•
In order not to damage the cable insulation, freely arrange the connecting cables.
•
Connect the machine corresponding to the specified direction of rotation.
•
Keep the inside of the terminal box clean and free from trimmed-off ends of wire.
•
Ensure that all seals and sealing surfaces are undamaged and clean.
•
Correctly and professionally close unused openings in the terminal boxes. Observe the
information in this documentation.
•
Observe the information on torques in this documentation.
