I'm looking for a powerful but the same time suitable for computer hardware step up/down transformer. I'll be glad to hear advices how to choose the right one.
I've found on the Internet many different models that look pretty the same:
Did someone try one of these? Are they good for computer hardware?
As long as they keep the sine wave and not use a modified sine wave or square wave they should be ok for computer use.
Do you by any chance have the spec sheets for either unit?
chrismeyer6 wrote on 2022-09-25, 19:15:Do you by any chance have the spec sheets for either unit?
Thank you for your reply. Yes, I've heard about sine wave issue, but in most cases there is no information about it.
Here are their specs:
1. LVYUAN 3000 WATT POWER CONVERT FROM AC 110V ⇄ 220V STEP UP DOWN TRANSFORMER
Output : 3000VA
Frequency: 50HZ / 60HZ
Input Voltage: AC 110-120V / 220-240V (Input voltage switch on the back)
Output Voltage: AC 220 V ±8% , 110V ±8%
Item Weight :13.23Pounds
Heavy duty 3000 Watts Step Up/Down Voltage Transformer Converter. Step Up Voltage from 110-120 Volts to 220-240 Volts. Step Down Voltage from 220-240 Volts to 110-120 Volts.
The Voltage Transformer has 100% Loading Capacity. Simultaneous 3-Mode Output: 110-120V USA Output Socket / 220-240V Universal Output Socket.
The Core Components of the Transformer Are Made of Environmentally Friendly Materials. It is Odorless and Noise Free.
Metal Casing. Circuit Breakers: Full Range Fuse Protection. Full Range Over Current Protection.
What You Get: A 3000 Watts Voltage Transformer with U.S. Standard Plug, A Manual, 3-Year Manufacturer's Limited Warranty.
2. 1000W/2000W/3000W ST-1000VA/ST-2000VA/ST-3000VA Voltage Converter 110V to 220V Single Phase Power Converter Transformer US Plug
Feature:
1. The product has universal interface which can support a variety of electrical sockets.
2. The control panel is simple and convenient to use with one-button switch
3. Built-in current limiting temperature protection, overcurrent overload protection, double protection is more secure.
4. The product is testing by standards for safe using, low noise
5. Suitable for all kinds of electrical equipment in scientific laboratories, industry and home
Specification:
Item Type: AC Voltage Converter
Model: ST-1000VA/ ST-2000VA/ ST-3000VA
Rated Power: 1000W/2000W/3000W
Input Voltage: AC110V, 60Hz
Output Voltage: AC110-120V, AC220-240V, 60Hz
Output Socket Type: 2 Universal Socket
Protection Mode: Overload Protector
Over Temperature Protection: 95 ℃
Power Factor: 0.8
Power Phase Number: Single Phase
Moisture Proof: Open
Cooling Method: Natural Cooling
Frequency Characteristics: Low Frequency
Core Shape: Ring
Plug Type: US Plug
1000W:
Power Cord Length: Approx. 137cm / 53.9in
Size: Approx. 19.1 x 15.9 x 12.3cm / 7.5 x 6.3 x 4.8in
2000W:
Power Cord Length: Approx. 137cm / 53.9in
Size: Approx. 22.4 x 21.7 x 15.8cm / 8.8 x 8.5 x 6.2in
3000W:
Power Cord Length: Approx. 137cm / 53.9in
Size: Approx. 22.4 x 21.7 x 15.8cm / 8.8 x 8.5 x 6.2in
Your welcome. I think you would be fine with one of these units. They do list laboratory equipment And most of that is computer based.
chrismeyer6 wrote on 2022-09-25, 19:51:Your welcome. I think you would be fine with one of these units. They do list laboratory equipment And most of that is computer based.
Thank you very much!
Your welcome. Any kind of fun projects you got coming up that needs one of these?
chrismeyer6 wrote on 2022-09-25, 20:40:Your welcome. Any kind of fun projects you got coming up that needs one of these?
The fun project that I need it for is the fact that I have plenty of European, US and Japanese hardware and my local electrical network gives me only 220V. 😄
Sounds like fun times to me. The nice thing with the unit being 3000 watts you should be able to power a few things at the same time
chrismeyer6 wrote on 2022-09-25, 21:27:Sounds like fun times to me. The nice thing with the unit being 3000 watts you should be able to power a few things at the same time
Exactly. I'm not into gaming, so my fun is tinkering with computers and with their peripheral devices.
Nothing wrong with that. One of my favorite parts of this hobby is building the systems. While I do play old and new games I really love building and setting up the computers that's just super enjoyable.
chrismeyer6 wrote on 2022-09-25, 21:39:Nothing wrong with that. One of my favorite parts of this hobby is building the systems. While I do play old and new games I really love building and setting up the computers that's just super enjoyable.
Sometimes I play games too. Very rarely though, but I doesn't see anything wrong in this part of a hobby also.
Many of these are using torodial 1:1 transformers with two ends (one from each) tied together so you end up with 3 leads to wire up. Out of the xformer.
They do it in such a way that the coils are running opposite directions from the neutral center tap.
Which allows you to take 120 and flip it into a 180 degree wave which I guess technically is still single phase though don’t ask me why they say that.
Anyway, you can use this to push in 240 and get out 120 and push in 120 and get out 240
Quality varies between units. Hard to tell what you will get but they seem to come in up to 5,000w flavors. Which would still work fine on 15a 120v circuits. You just wouldn’t pull more than 1500w or so from them.
The 5000w rating may be more of a peak rating anyway, less of a sustained one. Far as the xformer is conserned. These should actually have kva ratings, who knows where those went.
You certainly wouldn’t be able to come anywhere close to 5000w through a 120v 15a plug
Sphere478 wrote on 2022-09-25, 22:58:Many of these are using torodial 1:1 transformers with two ends (one from each) tied together so you end up with 3 leads to wire […]
Many of these are using torodial 1:1 transformers with two ends (one from each) tied together so you end up with 3 leads to wire up. Out of the xformer.
They do it in such a way that the coils are running opposite directions from the neutral center tap.
Which allows you to take 120 and flip it into a 180 degree wave which I guess technically is still single phase though don’t ask me why they say that.
Anyway, you can use this to push in 240 and get out 120 and push in 120 and get out 240
Quality varies between units. Hard to tell what you will get but they seem to come in up to 5,000w flavors. Which would still work fine on 15a 120v circuits. You just wouldn’t pull more than 1500w or so from them.
The 5000w rating may be more of a peak rating anyway, less of a sustained one. Far as the xformer is conserned. These should actually have kva ratings, who knows where those went.
You certainly wouldn’t be able to come anywhere close to 5000w through a 120v 15a plug
Thank you for the detailed explanation. I don't think I'll need too much Watts, since all I want is to plug 2-3 relatively small devices (one laptop and couple of peripheral devices).
It’s important to have a transformer that won’t overhead though. So often buying something a specific amount higher than load can be handy.
I will probably use the 5000 that I have for 12a 240v EV charging on tt-30 receptacles.
Sphere478 wrote on 2022-09-26, 00:33:It’s important to have a transformer that won’t overhead though. So often buying something a specific amount higher than load can be handy.
I will probably use the 5000 that I have for 12a 240v EV changing on tt-30 receptacles.
Yes, it makes sense.
