Quality Inverters

Submitted: Thursday, Dec 05, 2013 at 17:30
ThreadID: 105383 Views:4515 Replies:9 FollowUps:27
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Greetings

I'm in the market for a 600W pure sine wave inverter of good rather than dubious quality. Would I be correct in assuming I should leave Chinese manufactured units out of the equation?

Any suggestions on brands I should look into and those which I should avoid?
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Reply By: Member - Boobook - Thursday, Dec 05, 2013 at 17:48

Thursday, Dec 05, 2013 at 17:48
Jaycar is always good for inverters.
AnswerID: 522614

Follow Up By: Member - Rosco from way back - Thursday, Dec 05, 2013 at 18:00

Thursday, Dec 05, 2013 at 18:00
Hmmm ... yes, but ......... Country of origin?
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Follow Up By: rocco2010 - Thursday, Dec 05, 2013 at 18:14

Thursday, Dec 05, 2013 at 18:14
Gidday

It has probably been said before, but a lot of very respected manufacturers of electronic equipment have factories in china. It's not where it was made that counts, but who made it. I don't know much about inverters but I would be looking for a reputable supplier first, country of origin is less important.

Cheers
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Follow Up By: Member - Boobook - Thursday, Dec 05, 2013 at 18:21

Thursday, Dec 05, 2013 at 18:21
Member - Rosco from way back posted:
Hmmm ... yes, but ......... Country of origin?

The same place Mercedes and BMW make cars, Sony and Panasonic make TV's, Gucci make $8000 handbags, Boeing make parts of the 777 and 787, and Holeproof make your undies and socks.

BTW the Boeing batteries that were failing in the 787 were made in the US.


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Follow Up By: rocco2010 - Thursday, Dec 05, 2013 at 18:24

Thursday, Dec 05, 2013 at 18:24
Gidday

To sort of underline my point, redarc have a good reputation for their electrical stuff, but if you look on the website it says their inverters are made in China ...

Cheers
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Follow Up By: Gone Bush (WA) - Monday, Dec 09, 2013 at 10:30

Monday, Dec 09, 2013 at 10:30
Arguably the biggest car manufacturer in China is..... Audi.

I don't think they have a QC issue.

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Reply By: Andrew D. - Thursday, Dec 05, 2013 at 18:22

Thursday, Dec 05, 2013 at 18:22
Don't believe you would buy a small inverter that is not made in China or Taiwan.
If you want this inverter for casual use only the Projecta Intelliwave is a good buy with remote feature and digital readout. Jaycar brand Powertech are another brand of known quality.
If you want something more efficient than for casual use you need to look to Latronics and Selectronic and Latronics made in Australia or were. Latronics smallest unit is 800W. Sinergex and Victron top line models.

What you want to use and power from the inverter and the time you want to use the inverter dictates what is the best type of inverter for your needs.

I use a Morningstar Suresine 300W which is among the most efficient inverters available. Ideal for powering my VAST boxes where using them for extended periods of time. Have a 600W Projecta Intelliwave which use on a casual use basis for powering our Lemair washing machine every second day. Washing machine is only on for short periods while the sun is shining so the little bit of inefficiency compared to a much more expensive inverter doesn't matter.
Buy an inverter to suit your needs and don't oversize unnecessarily.
AnswerID: 522615

Follow Up By: Geoff H18 - Monday, Dec 09, 2013 at 09:26

Monday, Dec 09, 2013 at 09:26
Hi Andrew
I am curious as to what you define casual use.I have a 300 pure sine Projecta which I intend to use for our vast system and once I have switched that off I will use it for my Cpap machine.As the battery (and inverter) is located under my bed I do not want any problems.We only use the van on holidays and long weekends(unfortunately) but in that time I would be using it every night.
Thanks in advance
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Reply By: Shaker - Thursday, Dec 05, 2013 at 18:30

Thursday, Dec 05, 2013 at 18:30
Why not have a talk to Derek from ABR Sidewinder?

AnswerID: 522616

Follow Up By: Member - Tony H (touring oz) - Thursday, Dec 05, 2013 at 18:38

Thursday, Dec 05, 2013 at 18:38
X2 for Derek
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Follow Up By: Member - G.T. - Tuesday, Dec 10, 2013 at 16:56

Tuesday, Dec 10, 2013 at 16:56
X3 for Derek. Regards G.T.
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Reply By: Mick O - Thursday, Dec 05, 2013 at 18:40

Thursday, Dec 05, 2013 at 18:40
Have a look at COTEK inverters. I know Redarc deal in these. The company is American but the products are made in Taiwan. They are not the cheap generic solid state type inverters sourced from their near Asian neighbour. Several EO members are using these and they perform extremely well. I will no doubt invest in one myself once appropriate approvals have been provided by the Minister of Finance.

I am using a much cheaper 1500W PSW unit sourced from a reputable supplier. I have had a few issues (all of which have been addressed by the supplier) but the jury is still out.

The difference in quality of product and the ability of the product to produce as advertised is markedly different (as is the price). The COTEK at 1000W will run tools and appliances my 1500W inverter won't have a bar of.

If it is sold by Redarc you can be assured that their QA processes are excellent. Their product service and back-up is the same. That instils confidence in me as a customer.

Cheers Mick
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Follow Up By: olcoolone - Thursday, Dec 05, 2013 at 18:56

Thursday, Dec 05, 2013 at 18:56
Good to see it's still going strong, if bought through Redarc they come with a two year Australia wide warranty and the best in the industry customer service and support.

Cotek manufacture six different model ranges to cater for all.

Link to the inverters.
http://www.redarc.com.au/images/uploads/images/Redarc_Pure_Sine_Wave_Inverters_130408.pdf
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Reply By: Gramps - Thursday, Dec 05, 2013 at 19:34

Thursday, Dec 05, 2013 at 19:34
My first question would be "Why do you need a 600W pure sine wave inverter?"

My second question would be "Does the equipment you need to power from the inverter have a direct 12v input option ?"

Serious questions Rosco, definitely not taking the p...

Regards
AnswerID: 522620

Follow Up By: Member - Rosco from way back - Thursday, Dec 05, 2013 at 21:57

Thursday, Dec 05, 2013 at 21:57
1. Laptop that needs about 400 W.
2. No.
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Follow Up By: Gramps - Thursday, Dec 05, 2013 at 22:00

Thursday, Dec 05, 2013 at 22:00
Rosco,

I'm sure a Kerio or suchlike from Dick Smith etc will solve your problem. Generally a lot more efficient than an inverter.

Regards
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Follow Up By: Member - Rosco from way back - Thursday, Dec 05, 2013 at 22:10

Thursday, Dec 05, 2013 at 22:10
At 90W max power it seems to fall a tad short of the mark.
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Follow Up By: Member - Rosco from way back - Thursday, Dec 05, 2013 at 22:11

Thursday, Dec 05, 2013 at 22:11
It would seem Projecta or Redarc may be the go.
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Follow Up By: Gramps - Thursday, Dec 05, 2013 at 22:15

Thursday, Dec 05, 2013 at 22:15
Rosco,

I'm very suss about your laptop requiring 400w. Seems very over the top to me. Check this compatibility chart by selecting your laptop's manufacturer and finding the model no.
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Follow Up By: Member - Rosco from way back - Thursday, Dec 05, 2013 at 22:26

Thursday, Dec 05, 2013 at 22:26
Mate

It's a for work job, not a for play or face book. The power requirements are on the back of the transformer/charger. With similar power requirements on the back of the unit.
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Follow Up By: Gramps - Thursday, Dec 05, 2013 at 22:34

Thursday, Dec 05, 2013 at 22:34
Ok, if you can't find it on the compatibility list fair enough.

Regards
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Follow Up By: Member - Boobook - Friday, Dec 06, 2013 at 05:23

Friday, Dec 06, 2013 at 05:23
I'm with Gramps. I simply can not believe that a laptop can use 400W.

That's 21 Amps or 19V or 25A at 16V. It would burn whatever it is sitting on and last about 45 mins on battery when new. The low voltage cable would have to be 10mm thick.

Can you post what you are reading. You need the OUTPUT of the charger. A laptop will generally use 60 to 100w maximum.
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Follow Up By: olcoolone - Friday, Dec 06, 2013 at 08:05

Friday, Dec 06, 2013 at 08:05
The laptop uses a small amount of that 400 watts, it the 40 inch plasma screen that takes most.......

Inverters are a great thing to have and come in very handy..... probably the same reason why we have microwave ovens at home when we have a perfectly good working stove..... convenience.

If it's available why not use it.

BTW most laptops use 100-150 watts, we have one that is a desk top replacement..... twin Harddrives, 17 inch screen, fast processor and that runs of a 150 watt supply.

Our desktops run of a 750 watt supply.
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Follow Up By: Member - Rosco from way back - Friday, Dec 06, 2013 at 08:33

Friday, Dec 06, 2013 at 08:33
It's a top end Toshiba. Input requirement to transformer/charger 240V and 2A. Now without getting into the rms business of AC power, it seems to me a 600 W inverter would be required for a comfortable margin of safety.
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Follow Up By: Gramps - Friday, Dec 06, 2013 at 08:47

Friday, Dec 06, 2013 at 08:47
Rosco,

What is the output from the transformer? Mine is a Toshiba 19v @ 6.32A and runs comfortably from a 90w Kerio unit.

Regards
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FollowupID: 803752

Follow Up By: Member - Rosco from way back - Friday, Dec 06, 2013 at 08:56

Friday, Dec 06, 2013 at 08:56
Mate

That's a mystery to me. Your unit needs 120.08W to operate but runs on 90?

Regardless of the output, it's the required input that sets the rules. The difference is losses in the unit ... heat, eddy currents etc etc.
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Follow Up By: Gramps - Friday, Dec 06, 2013 at 09:03

Friday, Dec 06, 2013 at 09:03
"Regardless of the output, it's the required input that sets the rules"

Wrong, It's the output from the transformer that runs the laptop.

The Kerio unit replaces the AC transformer that you use to run your laptop from a normal GPO. The input 240v @ 2A (the same as mine) is irrelevant in this scenario.

If you've got other devices that specifically need PSW and don't have a 12v option, then get the inverter. Otherwise, I think you're making a mistake ( $s + battery power )

Regards
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FollowupID: 803755

Follow Up By: Member - Rosco from way back - Friday, Dec 06, 2013 at 09:27

Friday, Dec 06, 2013 at 09:27
Your choice my friend, as it is mine. Personally, with the amount of money involved in the unit I will purchase, I'm not about to run it on anything other than the transformer it came with, especially something that puts out 75% of the required power. That may work for you and I say goodo, but it's not my choice.
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FollowupID: 803756

Follow Up By: Gramps - Friday, Dec 06, 2013 at 09:34

Friday, Dec 06, 2013 at 09:34
Mate,

No problem and good luck.

Regards
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Follow Up By: allanw - Monday, Dec 09, 2013 at 16:41

Monday, Dec 09, 2013 at 16:41
Most inverters have ratings for both continuous and peak operation. A large number of inverters commonly available seem to have a peak rating of double the continuous rating so are more effective at getting things started. I think this is where the observations of 300watt inverters apparently working better than 600w inverters comes from. The lower power units have a higher peak capability.
I too add my voice of awe that a laptop could require a 400W power supply, but I recently observed a Dell laptop that would operate but not charge from a 90W power supply when most laptops will charge from a 45-60w unit.
The other way to look at this question is to see if Toshiba have a 12volt travel charger for the laptop you are buying/bought. that would be the most efficient way to run it and it would be sanctioned by the manufacturer.
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FollowupID: 803973

Reply By: dublediff - Thursday, Dec 05, 2013 at 22:28

Thursday, Dec 05, 2013 at 22:28
I agree with the comment about your laptop power req'ments. Most have a step down facility from ac to dc such as mine from 240v ac to 19v dc. A good transformer for the car gives me my 19 v and I have never had a problem. Maybe it's time to trade up to a newer laptop, it would be far cheaper than a quality sine wave invertor.


AnswerID: 522631

Follow Up By: Member - Rosco from way back - Thursday, Dec 05, 2013 at 22:34

Thursday, Dec 05, 2013 at 22:34
It's a unit I haven't even bought as yet. Has more grunt than your average PC, hence the power requirements.
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Follow Up By: Gramps - Thursday, Dec 05, 2013 at 22:36

Thursday, Dec 05, 2013 at 22:36
Agree dublediff. It's got me intrigued as to the manufacturer and what it is used for.
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FollowupID: 803738

Reply By: Peter_n_Margaret - Thursday, Dec 05, 2013 at 23:18

Thursday, Dec 05, 2013 at 23:18
SEA
http://www.solaraustralia.com.au/bolero.html
I have a 1300W PSW one that is 8 years old. Impeccable.

Cheers,
Peter
OKA196 Motorhome
AnswerID: 522635

Reply By: Stevesub1 - Friday, Dec 06, 2013 at 07:19

Friday, Dec 06, 2013 at 07:19
I have been using either a 150W or 300W non-sinewave elcheapo Chinese made inverter(s) - I have 2 - for charging laptops, tablets and phones for getting onto 15 years, all with no problems.

I have seen 600W Sinewave that would not charge a laptop, sorry do not know the brand but I told the owner to get a cheapie as I have and she is happy as now except for her 600W brick that the seller does not want to support. It does work, but it needs at least a few hundred watts draw to work..
AnswerID: 522638

Reply By: Member - Wamuranman - Friday, Dec 06, 2013 at 09:57

Friday, Dec 06, 2013 at 09:57
Durst make and distribute quality electrical products, components etc incl converters. They are an Australian company and distributer but no doubt some items they sell are sources overseas incl China. Nevertheless they focus on supplying industry, mining etc. so there products are robust.
Their website staes their inverters are 85% efficient whatever that means?
Have a look:
http://durst.com.au/Store/cart_detail.asp?group1=Inverters-AC

I have no association just bought one of their 25amp smart chargers. Very good charger it is too.
Cheers
AnswerID: 522653

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