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Wiring cummins gen with alternator withSx440 avr

I change 100kva alternator with MX321 AVR with 125 KVA alternator with SX440 AVR. I want to know how the wiring goes

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With a gen set that big I strongly recommend a qualified electrician for the job as one touch and you will be charcoal.

Posted on Apr 21, 2013


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1 Answer

HK AVR 125 display strobing and no sound, even in headphone jack


Find someone that does TV or audio repair and have them open it up. A cable assembly may have loosened during the MOVE.


Jan 30, 2014 | Harman Kardon AVR 125 Receiver

1 Answer

Generator avr

The AVR automatic voltage regulator normally gets damaged by a short in the rotor, wiring etc. MOST common is shutting the generator down under load and NO NO. The AVR goes wide open to try and maintain voltage on a gen that is stopping, always disconnect loads then shut off

Jun 27, 2013 | Electrical Supplies

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My 3kva petrol generatori change lot of avr after 1 hours it burn

If I understand your problem, you replace the AVR only to have it go bad after only ! hour. This is a very strong indication that the winding of the rotating field has a short circuit . If you do nor have meters and equipment to test, try this trick. In the wiring from the regulator to the slipring brushes, cut the wire and splice in a automotive fuse holder with a 3 amp fuse. If you run the unit and it blows the fuse, you then know the problem. Hope this helps you, Robert

Mar 26, 2013 | Electrical Supplies

1 Answer

Unit will not turn on. All other components connected to the same outlet will. Is there a fuse in the AVR 125 that I need to check/change?

There is no mention of any fuse in the owners manual (downloadable from the link below)
You could try plugging an external device into the unswitched ac outlet on the rear panel to check if ac power is actually reaching the unit.

Feb 27, 2011 | Harman Kardon AVR 125 Receiver

1 Answer

Just bought a Sharp LED TV and there is a slight delay between hearing sound and seeing lips move. Have cable box hooked up to tv by HDMI and have cable box hooked to AVR (Harmon Kardon AVR125) by optical...

Hi if there is an optical out on the television i would use that direct to your Harmon Kardon AVR 125, the sound would be in sync with picture, as the source is the same.

Jan 31, 2011 | Harman Kardon AVR 125 Receiver

2 Answers

No power

Hi Jerry,
The power wires are usually numbered 11 & 22 (one winding) and 33 & 44 (the other winding) Because it makes 190VAC on one side only I'd suspect that the AVR output got burned trying to force the rotor to make voltage it couldn't sense. If I remember correctly the AVR will have wires 11 & 22 connected to it as the sense input, so if that side of the stator is open or shorted, or if the sense wires got broken the AVR will be mased out trying to get the right voltage.

You don't specify which model this is but some of the manuals are available here.


Jan 03, 2009 | Electrical Supplies

2 Answers

No electrical output

probably your AVR card is burnt...
an AVR card is located right outside the stator...looks just like an AK-47 clip (i don't know how else to describe it)...i put a pic below this.
replace it and check again
466fecd.jpgAVR location
168ff0f.jpgAVR card

Dec 28, 2008 | Electrical Supplies

2 Answers

Harmon kardon avr 125 shuts down

If you want to fix it:

It must be a contact problem arount the power switch, power cable, fuse or the condensator area.
Maybe you can se a black color on the board.
And checking the solderind points with a magnifyer can help too.

Thats all from that distence.

Nov 11, 2007 | Harman Kardon AVR 130 Receiver

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