Connecting Power Cables; Preparations - Siemens SINAMICS PERFECT HARMONY GH150 6SL3826 Operating Instructions Manual

Medium-voltage drive

Table of Contents

6.8

Connecting power cables

6.8.1

When connecting the cables, observe all the conditions regarding conductor protection. Do not

exceed the permitted cable lengths between the converter output and motor. The distance

between the motor cable and the signal cable should be at least 20 cm. Do not lay grid-side and

motor supply cables in parallel to each other.

The positions of the connections are shown in the layout diagrams. Detailed wiring notes for the

converter are contained in the circuit manual of the converter.

Select the appropriate cable depending on the following conditions:

● Routing conditions

● Accumulation of cables

● Ambient temperature

● Bending radii

● Output voltage

Observe the connection capabilities on the converter and on the motor terminal box.

Detailed information about cabling of the drive is provided in the circuit diagrams supplied.

● Please ensure that the maximum cable lengths between the drive and motor are not

● Make sure that the permissible cable capacitance is not exceeded.

● Use appropriate screws for the cable lugs provided.

● The tightening torque for the M10 screws is 25 Nm.

● Clean the contact surfaces before screwing the connections.

● Using ethyl alcohol as cleaning agent.

NOTICE

Thermal destruction of the power cable

Cables that have not been properly secured at the connection point, represent a high electrical

transition resistance, which can result in thermal destruction.