Step-Down Transformer or Converter for air purifier

Status
Not open for further replies.
J

jd21

Contributor
@ all,

plz, suggest me to chose a Step-Down Transformer or Converter for my new air purifier bought from US,

http://www.amazon.co...27254874&sr=8-1

which one is better for this, a step-down transformer or voltage converter.

INPUT : 120v, 60Hz, 0.85amp, as stated in the unit. first time am going to buy an equipment to use with non-indian standards.

[font=times new roman,times,serif]aneone knows any well known brand to use with this air purifier can suggest me as this is very needy now. [/font]

any online shops/local shops in chennai & bangalore?.
 
Your device is rated ~102W. Look for something rated atleast 125W, since Maxine seem to over-rate their stuff.
 
@bottle & crazy thanq for ur replies,

http://www.ebay.in/itm/220v-110v-25...0?pt=LH_DefaultDomain_203&hash=item3cc0bae0bc

i got a quote for rs.900 for the above same maxine model 250w from a local shop. but, the shop owner don't know about the output Hz(50/60), as it is not mentioned in the unit also.

does "Hz" makes any difference or any problem to my air purifier. is it compulsory to get a "60 Hz" output transformer to work with the air purifier?.

please make me clear before buying.

thanq.
 
thanks crazy,

but the honeywell transformers are step-up with 50/60Hz(auto), i think, "203365A Conversion Kit For Electronic Air Cleaners 120V 60 Hz power supply to 220/240v 60 Hz or 220/240v 50 Hz".

here all the transformers have 110v/120v with 50Hz output only, i think. i don't know any transformers are with auto 50/60Hz output. correct me if i am wrong.

as i want to know whether 60Hz is important here from a step-down transformer to my air purifier to work smoothly without any problems.

P.s.: avoiding SMS lingo from this post.
 
A transformer cannot change frequencies. All the step-up/down transformers you get here will be 50Hz, because our supply operates at 50Hz.

Their kit is just a transformer.

They have just stated 50/60Hz implying the transformer will work on either frequency - which would imply their air purifiers aren't frequency sensitive.
 
thanks mate

Crazy_Eddy said:
A transformer cannot change frequencies. All the step-up/down transformers you get here will be 50Hz, because our supply operates at 50Hz.

Their kit is just a transformer.

They have just stated 50/60Hz implying the transformer will work on either frequency - which would imply their air purifiers aren't frequency sensitive.
Click to expand...

thanks mate,

so, air purifiers are not frequency sensitive like other electronics items(speakers, home theatres, monitors etc.,), as they will operate in either 50 or 60hz without any problems. now i've got a clear idea. then i will go with normal step-down transformer running on 50Hz output.

little bit afraid of frequency thats all.

thanks.
 
@Crazy_Eddy,

i bought one maxine 150watts step down transformer. before connecting the air-purifier i tested the output voltage from the transformer and its' between 110v-120v(not costant at 120v). after connecting the purifier it worked well for around three hours and then i felt some different smell from the purifier. suddenly, i switched off both the transformer and purifier. but, the transformer was too hot(some vibration also there while on operation) and i tested the output voltage it showed more than 135v.

the next day, i tested before and after connecting the purifier to the transformer, i got the same above results(but this time only one hour).

now i want to know, why this output voltage from transformer is increasing while on continuous operation?(and getting hot also).

is the transformer fault or purifier?

is the purifier consuming more power?

is the transformers are not suitable for continuous operation?.

please, advice me what i've to do now.
 
Check input voltages as well.

If input voltages are fine, your transformer windings are probably shorting out somewhere (the Maxine website says its an auto transformer, so this is highly likely), i.e. its defective.

P.s.:

Transformer vibration/humming is normal.

If the transformer is overloaded, the output voltage would drop.

P.s.2:

You can use #username instead of @username , to tag people so they receive a notification
<
 
i forgot to mention about the input voltage, inputs are between 218v to 250v(max). i think the input voltage is fine.

probably the transformer itself fualty, yes?.

could u please, give me some more details about the auto transformer. is there any other type of transformers available?.
 
The other type of transformers are double wound transformers. They have a separate set of windings for the input and output.

Auto transformers make do with a single winding - to help keep costs down.
 
Crazy_Eddy said:
Check input voltages as well.

If input voltages are fine, your transformer windings are probably shorting out somewhere (the Maxine website says its an auto transformer, so this is highly likely), i.e. its defective.
Click to expand...

i checked the transformer with other devices,

mobile fone charger - operating voltage - 100-240v @ 50/60hz,(around three hours),

14" CRT tv - operating voltage - 90-270v @ 50hz, 70watts(around two hours).

in both testing there is no overheat, no increase in voltage(before and after connecting the devices). the transformer worked normal(voltage output between 105 to 115 - according to mains supply).

i think, the problem is not with the transformer, may be with the purifier. i don't know which is making the problem.

is air purifier consuming more watts than the output or transformer's ouput is below the rated wattage?

or the "60 Hz" is making any problem here?.

please, help me to come out of this confusion.

(sorry for too many questions).
 
anyone's help may help me to decide whether to go with higher watts transformer or any other converters.
 
Someone on the Amazon page measured a power consumption of ~30W for your purifier.

Plus an overloaded transformer would always have an output voltage drop.

The transformer is rated for 50Hz operation, and since your supply is 50Hz as well.. the transformer is operating at 50Hz. So the '60Hz' factor is not affecting the transformer atleast.

There may be something else we're not seeing, but I highly doubt its an overload situation.
 
at last, i found the solution to run the air purifier at 24/7. the purifier has three level speed settings, while testing earlier the speed is on high(3rd-i didn't change to other speed levels-"stupid" forgot to change the speed levels).

three days back i tried with the 2nd level and i ran it for hours without any break, and it's working flawlessly. no overheating, no voltage increase in the transformer, etc.,

the problem is with the transformer only as the output wattage from transformer is not sufficient to run the purifier on the high setting.

i wonder how it's not possible for the transformer to draw a minimum of 100watts as it's a 150watts output unit.

so, if i want to run the purifier on high setting i've to buy one 200watts or 250 watts transformer.

the voltage increase in transformer is b'coz of more wattage consumption from purifier, i think.

any way i satisfied with my air purifier and the transformer.

thanks to crazy for the replies and help.
 
I bought one local made step down transformer based voltage converter 240v to 120v for my trimmer bought in US. It is quite good. I forgot the compnay name.
 
Status
Not open for further replies.
Top Bottom