running a Waeco on a Non Inverter genset

Submitted: Sunday, Mar 13, 2011 at 16:07
ThreadID: 84967 Views:3347 Replies:2 FollowUps:9
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Ive got a Waeco CF50 and wondering if I can run the fridge of a Yamaha EF1000 genset that is a non inverter genset?.
Other wise I will need to Take my bigger EF2400i genset.
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Reply By: paulnsw - Sunday, Mar 13, 2011 at 16:47

Sunday, Mar 13, 2011 at 16:47
No worries most rotary generators produce a sine wave. Dont touch Engel generator square wave and only two speed throttle setting. Large generators are not inverter.
AnswerID: 448094

Follow Up By: Racey - Sunday, Mar 13, 2011 at 17:20

Sunday, Mar 13, 2011 at 17:20
Hi Paulnsw,

Sorry to differ, but most rotary generators, non inverter, don't produce a good sine wave. Most of them produce an very crappy wave form which can be detrimental to anything electronic, or it simply won't run.

These days inverter units are the way to go.

Cheers
Racey
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Follow Up By: Faulic_McVitte - Sunday, Mar 13, 2011 at 18:15

Sunday, Mar 13, 2011 at 18:15
Racey unfortunatly not a factual statement. They do produce an adequate sine wave and will not be detrimental to anything electronic. Electronic equipment is all rectified to low voltage through power supplies with more than adequate proctection. We have used non inverter generators and still do every day for electronic equipment without issues. The $85 GMC gennies produced an acceptable sine wave form when set at 3,000rpm for electronic equipment. My involvement with small power systems and generators in an engineering capacity goes back to before you were born.
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Follow Up By: Dennis Ellery - Sunday, Mar 13, 2011 at 18:25

Sunday, Mar 13, 2011 at 18:25
Spot on Faulic.
But also check with Yamah website which quotes the following -
"The EF1000 is the most popular Yamaha generator.The EF1000 is small, easy to carry and can run a microwave, washing machine or small refrigerator"
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Follow Up By: Racey - Sunday, Mar 13, 2011 at 18:31

Sunday, Mar 13, 2011 at 18:31
Guy's, I will concede there may be exceptions to all the rules. However, MOST of the non-inverter generators below say 5kva, simply don't have enough iron to produce a pure sine wave. Generally they produce a very distorted wave, as I said before either wont run or CAN be detrimental to electronic equipment.
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Follow Up By: Millsy - The Uteshed(WA) - Sunday, Mar 13, 2011 at 20:19

Sunday, Mar 13, 2011 at 20:19
The EF1000 is about 10 years old and done only 165hrs from the hour meter I fitted from new. It is not a new EF1000i series.
had it plugged into my old Waeco70L fridge power box and it smoked-it :(
so this is why I was asking if it would run the new 50L waeco that you can have it plugged directly into 240v.
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FollowupID: 720473

Follow Up By: Ray - Sunday, Mar 13, 2011 at 20:55

Sunday, Mar 13, 2011 at 20:55
I have had a Yamaha ET 650 for a number of years now and have run an Engle, a Waeco, television, lights and a computer all with no problems.
I have done quite a bit of work in diesel power houses in the past (now retired) but can't recall sine wave being mentioned but power factor was very important as well as AVR. I would say that if a generator has a good AVR running various equipment off it would not be a problem.
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Follow Up By: oldtrack123 - Monday, Mar 14, 2011 at 12:40

Monday, Mar 14, 2011 at 12:40
Hi
Older style non inverter generators generally give a very good sine wave form
The AVR system if existent may be poor
Many simply have a manual adjustable voltage
Speed control & governor response time can be critical in maintaining the correct frequency.

Simply because a generator is an inverter type does not mean it has a good sine wave output ,particularly under heavy loads.
They can be Square wave[Engel] ,Modified square wave ,[many] & some, very near true sine wave.

The basic inverter circuits are no different to those found with DC To AC inverters
Square, MSW, & PURE.

Peter
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Reply By: Sea-Dog - Monday, Mar 14, 2011 at 17:14

Monday, Mar 14, 2011 at 17:14
If you are running the fridge off the genny you could consider looking at running the genny to a Waeco 240V/12V power supply unit.. that would iron out the roughness of the sine if that is a problem and would be running the fridge on 12V only..

Feel free to flame me .. I am a long way from being an expert - just putting up a suggestion to consider! :)
AnswerID: 448205

Follow Up By: Stu & "Bob" - Monday, Mar 14, 2011 at 18:41

Monday, Mar 14, 2011 at 18:41
I think that the new Waecos have their power transformer built in.
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Follow Up By: Snoopyone - Monday, Mar 14, 2011 at 22:11

Monday, Mar 14, 2011 at 22:11
Yep 50's and 60's have both 12 and 240 volt inputs

The 240 overides the 12 if connected together as far as I can make out.

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