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A Forum run by Enthusiasts of MidNite Solar

Charge Controllers and Clippers => The "Clipper" => Topic started by: Boondocker on September 10, 2016, 08:08:00 PM

Title: Clipper Resistors
Post by: Boondocker on September 10, 2016, 08:08:00 PM
Hello,

Is the resistor, MNResistor600W-2.0, the right physical size to exchange out one of the existing resistors in the Clipper?

Thanks

Boondocker
Title: Re: Clipper Resistors
Post by: dgd on September 11, 2016, 06:15:04 AM
Should be ok,  however why are you replacing just one resistor?
What model of Clipper do you have?
dgd
Title: Re: Clipper Resistors
Post by: Boondocker on September 11, 2016, 07:04:18 AM
Hi dgd,

The resistor question is in reference to an earlier post:  http://kb1uas.com/mnsforum/index.php?topic=2739.0

It is a 4KW AC Clipper equipped with 1.6 ohms of resistance.  I'm planning on swapping out on of the 0.8 with a 2.0 ohm resistor, to give each phase leg 2.8 ohms.

Boondocker
Title: Re: Clipper Resistors
Post by: tecnodave on September 21, 2016, 07:13:00 PM
Boondocker,

Not a good idea to do it that way......the 2 ohm resistor  will be disapating most of the power, approximately 2 1/2 times the power of the .8 ohm resistor

Depends on the power you need to dump, for max loading use two 1.4 ohm units in series

Using your setup would give approx 2200 watts load ability but with matched resistors max loading would be more like 3600 watts

David
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