Moving From USA Overseas... Looking For Advice re: Electrical Service and Gear


hello all,

i'm moving from the USA to Vietnam (220V / 50 hz) and am looking for some advice on the best and safest way to hook up my system out there.  the area i'm moving to - district 2 in ho chi minh city - apparently has power outages monthly.  any advice on safely running my gear out there would be appreciated.

  • is it better to have my gear converted to 220V, or simply use a 220V - 120V step down transformer?
  • should i use an uninterruptible power supply (UPS / battery backup) or is a good surge protector sufficient?
  • is it possible to use a step down transformer in line with a UPS, ie, wall to UPS, UPS to transformer, transformer to gear?

as you can see, i have no idea what's the best and safest way to run USA spec equipment in Vietnam and would appreciate all inputs and recommendations.

thanks!
Scott 
srosenberg

Showing 5 responses by lucidear

I'd look into acupwr.com transformers, they have a series for refrigerators that would change 220-240v @ 50h into 120v @60h.

They also have power stabilizers @ 1000w & 2000w for brown outs.
not affiliated with them in any ways, except thinking of buying these two products for my own use.
good luck 
Srosenberg,

I feel the upside of using a Transformer is that if you move back to the States then you don't have to do internal voltage conversions all over again.

As to your question, I was planning to conncet the voltage stabilizer into the wall then the transformer into that and a Shunyata power distributor & surge protector into the transformer, and my components into the Shunyata. 

If you've read something against that it's best to call Haley and ask them for advice for using their unit.
+1 on the suggestion to contact the company.

i just pulled out the external transformer connected to my Mom's 27 qf GE fridge, it's by a company outa NY called Todd.
The unit states it's a 3 Prong transformer and converts 50h to 60h as well as 220-240 into 110-120v, 26 years on knock on wood no problems ever with the fridge.

should any of you contact Acupwr, please inform of your findings over here.

+1 Thank you Al.
I’ll wait for your findings as well...

In the meantime I located the website for Todd transformers I mentioned before, the unit is called 3 tap (which I mistakenly wrote prong!) and this co. Has been around for forty years...

anywho, here is a bit from them:
http://www.toddsystems.com/geninfo.html

"No transformer of any type can change frequency. Frequency is unimportant to the normal operation of most loads: most motor driven loads will simply run at a slightly different speed than they did at their rated frequency; simple heating equipment (broilers, coffee pots, etc.) will operate with no problem at all. However, motor loads whose proper operation depends upon frequency, such as clocks, turntables, timers, cassette players, etc. must be converted for voltage with a transformer and then also have their gears and/or pulleys changed for speed correction.

Some motor loads are heat sensitive to frequency changes. To avoid overheating sensitive motors, such as those that continuously stop and start, or run non-stop -- refrigerators, air conditioners, washing machines, shop equipment, etc., it is good practice to run 60 Hz motors at 10% less voltage when operated on 50Hz (e.g. 115 V 60 Hz equipment should operate at 100 - 105 V at 50 Hz). Conversely, to obtain full power from a 50 Hz motor operated on 60 Hz, it is necessary to supply it with 10% extra voltage (e.g. 220 V at 50 Hz should be operated at 250 - 260 V at 60 Hz)."...

lastly, I’ve seen people stating that they’re using external transformers with an amp just like mine (Levinson 532h) overseas with no issues... So I’m thinking that this may be more of an issue with TT, tape decks etc.?...
l'll wait for Al’s inputs...
thanks again

Al,

Thanks again,
forums like this and knowledgeable folks like you make life easier for the Rest of us...
Best Regards