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What would the recommended cable size be for connecting the dynamic braking resistor?

Published date: 15 April 2020

Issue:
Are there recommended cable sizes for connecting the dynamic braking resistor?
 
Product Line:
Altivar 630
 
Environment:
All models and serial numbers
 
Cause:
NA
 
Resolution:
When sizing the cable to be connected between the drive and the braking resistor is it simply a matter of taking the drives Max DC bus level and dividing it by the brake resistor value to determine the current through the resistor. 
The bus voltage divided by the ohm rating of the resistor will give you the maximum current draw. Also , when the circuit is very noisy , it is best to use shielded cable if you have noise concerns.
 

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