Reliable quality voltage transformer converters?

[xboxhaxorz]

I always recommend a direct 220v line over a transformer, for those that do not have an available circuit breaker dont have many options

So after looking at AMZ their transformers vary, some working great and others dying and with the high shipping cost the warranty is not really helpful

If you have any recommendations for something that is 2475 watts it would be great

[budm]

Re: Reliable quality voltage transformer converters?

Are you asking for a step-up, step-down, Isolation, auto-transformer? What are the requirement?

[stj]

Re: Reliable quality voltage transformer converters?

2.4Kw = about 10a - that's gonna be huge.

[xboxhaxorz]

Re: Reliable quality voltage transformer converters?

Using a 220v device in USA on 120v

I found this, not sure on its build quality
http://www.220-electronics.com/3500-...regulator.html

[Th3_uN1Qu3]

Re: Reliable quality voltage transformer converters?

I think he's looking for an autotransformer, no isolation required. Knowing him it's likely that he needs it for a BGA rework station.

[budm]

Re: Reliable quality voltage transformer converters?

if the load requirement is 2475W then he needs to get one with 20% headroom.
To step up 120V to 220V with about 2500W, the input current will be at least 21A (2500W/120V = 20.833aA)!

[xboxhaxorz]

Re: Reliable quality voltage transformer converters?

Lol you know me well, yep its a customer that wants a 220v model

They said an electrician went by and no more breakers available, so a transformer is needed

[xboxhaxorz]

Re: Reliable quality voltage transformer converters?

if the load requirement is 2475W then he needs to get one with 20% headroom.
To step up 120V to 220V with about 2500W, the input current will be at least 21A (2500W/120V = 20.833aA)!

This is part of the reason i do not recommend transformers

[budm]

Re: Reliable quality voltage transformer converters?

A 120V model it will be 21A, it not going to be any less which means it is going to be NEMA 5-30 PLUG and OUTLET, so he will be better off getting 240V model to run on us 240V system which will require about 10A.

[xboxhaxorz]

Re: Reliable quality voltage transformer converters?

I am not quite clear on transformers, i know a device that is dual voltage will heat much quicker on 220v

If using a transformer on 120v will it heat at the same speed or will it be half

[stj]

Re: Reliable quality voltage transformer converters?

the wattage may be wrong, my local re-balling guy has one that uses something like 20a 230v with the bottom and top heaters all on together!

[budm]

Re: Reliable quality voltage transformer converters?

I am not quite clear on transformers, i know a device that is dual voltage will heat much quicker on 220v

If using a transformer on 120v will it heat at the same speed or will it be half

I do not see why that will happen, it will still consume the same Wattage as long as the wiring are made for the current handling, higher current = bigger wire gauge. The heater Voltage rating also has to be correct for the operating Voltage.
i.e 1000W 120V heater will require larger current than the 1000W 220V heater, power consumption stays the same at 1000W but the resistance of the two heaters will not be the same.

[stj]

Re: Reliable quality voltage transformer converters?

can we know the make & model of the unit?

[xboxhaxorz]

Re: Reliable quality voltage transformer converters?

Maybe im thinking about something different then
For some reason i thought using a dual voltage device on 220 would make it more powerful than using the same device on 120v, but perhaps i was thinking of using a 220v only device on 120v and it would not work at full power

[xboxhaxorz]

Re: Reliable quality voltage transformer converters?

the wattage may be wrong, my local re-balling guy has one that uses something like 20a 230v with the bottom and top heaters all on together!

There are many machines ranging from 600 watts to 5000+

[xboxhaxorz]

Re: Reliable quality voltage transformer converters?

I made the recommendation of using a tandem circuit breaker in order to get more room in the breaker box