Frequency Drive
A look at what is currently available on eBay
 ALLEN BRADLEY POWER FLEX 4 FREQUENCY DRIVE 22A-D4PON104 NIB NR US $199.00 
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 Delta 380-480v 3PH 3HP VFD variable frequency drive US $299.99
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 HITACHI VARIABLE FREQUENCY DRIVE INVERTER VFD SPEED US $308.00
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What is the reason for MOTOR PROTECTION FILTER getting overheated in a variable frequency drive?
The motor protection filters installed in a variable frquency drive cabinet are getting overheated.
Overheating is a clear indication of the device carrying more current than its external heat removal processes can support.
This could be due to poor design, poor application, or poor maintenance.
It is possible that the fundamental current is within the ratings, but since it is a harmonic filter application, the harmonic currents must also be considered.
Also, suggest you check any associated heat sink, and check the coolant flow (air or liquid) over the heat sink.
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November 7th, 2006 in
Uncategorized | tags: ac, adjustable, drive, electronics, frequency, frequency drive, frequency drive energy savings, frequency drive phase converter, frequency drive single phase, frequency drive theory, frequency drive training, frequency drive troubleshooting, frequency drive tutorial, frequency drives, speed, variable, voltage