KEB COMBIVERT F5 Instructions For Use

6.4.7 Motor cable lengths
ATTENTION
The permissible cable length is reduced if the minimum cross-section
of the motor connection is distributed across several cables.
• Themaximumcablelengthsarespeciedfortherecommendedtypeofcable.
• The permissible cable lengths depend on the number of cables per phase.
• Longer cables may only be provided after consultation with KEB.
• Thespeciedcablelengthsrepresenttheactualdistancebetweendriveconverter
and motor.
In case of parallel connection of motor cables, the cable capacitance is dou-
bling, which leads to higher leakage currents between drive converter and mo-
tor. These should always be kept as small as possible.
The resulting motor cable length for parallel operation of motors, or parallel installation
with multiple cables arises from the following formula:
Resultingmotorcablelength=∑singlecablelengthsx√Number of motor cables
Maximum permissible motor cable lengths
Number of ca-
bles per phase
Ring cable lug
Cable lengths
in m
Withoutsine-wavelter/
motor choke
With sine-wavelter
1
M12
100 500
2 35 177
Table 24: Maximum permissible motor cable lengths
71
ELECTRICAL INSTALLATION

KEB COMBIVERT F5 Specifications

General

Brand	KEB
Model	COMBIVERT F5
Category	DC Drives
Language	English