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Anonymous Poster #1

Cable Rating for 250KW DC Motor

12/24/2011 12:03 PM

We are going to commission DC motor of 150 KW capacity & details are given below,

Drive Incoming:

Incoming supply 415 v ac

Drive outgoing:

Armature Voltage 415 V dc

Armature Current 330 Amps

Field Voltage 110 v dc

Field Current 7.3 Amps

Motor RPM:1000

Please give the proper calculation to find the Cable rating for DC Drive incoming cable & outgoing cable from Drive to motor(Both armature & field)

Thanx
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lyn
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#1

Re: Cable rating for 250KW DC motor

12/24/2011 12:37 PM

There are many web sites that offer help for people who don't have a clue what they are doing.

I'd advise you to hire an engineer to supervise the commissioning of the motor.

But that's just what I'd do.
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Wal
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#2

Re: Cable Rating for 250KW DC Motor

12/25/2011 12:20 AM

Motor Magic 101 tutorial is in conference room 6

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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

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#3

Re: Cable Rating for 250KW DC Motor

12/25/2011 3:56 AM

This task is not generally done by calculation. Instead, one looks things up in electrical code tables. In this case, the insulation class at or above 415v is 600v; then select conductors by amperage, accounting for ambient temperature and conductor configuration.

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PWSlack
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#4

Re: Cable Rating for 250KW DC Motor

12/25/2011 1:40 PM

Did Santa bring British Standard 7671?

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