Wiring 480/240V to 240/120V on Epoxy Resin Encapsulated Transformers | Schneider Electric Support
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- Опубликовано: 17 июн 2018
- Welcome to our tutorial on wiring Epoxy Resin Encapsulated Transformers! In this video, we guide you through the process of wiring a 480/240V primary to a 240/120V secondary configuration.
➡️Whether you're a beginner or an experienced electrician, this step-by-step guide will help you navigate the intricacies of working with low-voltage systems.
🔔 Timestamps:
0:11: Primary Wiring
1:28: Alternate Primary Wiring for 240V
2:03: Secondary Wiring Options
🔗Learn more at Schneider Electric FAQs: spr.ly/SchneiderElectricfaqs/F...
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Thanks you are AWESOME you just save me at work
It's not "one line of 240 volts" Or "one line of 480 volts", because each 240 is 120 on each line and 480 is 277 on each line, it is important to be clear as to not confuse others, into thinking each line actually has 240, or 480.
Beat me to it. Thank you!!
exactly, which is why to ground those are the outputs you get on 240/120 and 480. But you obviously knew that lol, like preaching to the choir
Thanks!
Just an FYI......even though I wired everything correctly (checked and verified NUMEROUS times), I ended up with very unbalanced voltage on the secondary outputs (170 volts on one leg and 60 volts on the other) and it had to be corrected by bonding the neutral to ground.
hey man, just to let you know I did one of these today, you have to ground and bond according to art 250 NEC and protect these windings with article 450 the one I did earlier was @ 167% for the primary side,
you absolutely have to take that ground stud and go straight to earth with it via a grounding electrode, then take a "bonding jumper" from that same stud to those "Neutral taps" and of course the earth ground also has to go to the equipment grounding conductors in your raceways entering and exiting the transformer,
@@anthonysolino good looking out thank you. That was important to say and I'm very glad that you did because it clicked in my head thank you
Thank you for this. Very important step. After reading this I can see it just like a transformer. Very helpful. Thanks. I am wiring a buck and boost from a 480v panel to a 120v panel. All part of a ups system of course. Thanks again brother.
Thanks so much your video was very helpful it all save hundreds of dollars is very simple
Thanks so much👍🏻👍🏻👍🏻👍🏻
I have a question, is this one of two secondary terminals to be grounded to the case or chassis ? I see there is a ground terminal in the case. The NEC needs to ground secondary , if no ground it is against the code.thanks.
Thank you for your message Joseph. We house most of our documentation in a virtual database here: www.se.com/ww/en/download/. If this does not address your concerns, please reach out to a technical support person in your location.www.se.com/ww/en/work/support/country-selector/contact-us.jsp
This is considered a single phase trans right?
My setup
H1h3 got 240 leg. H2h4 got neutral
X1 gives 120v - x2x3.neutral - x4. Gives120v
Correct?
Hi Rob C, thank you very much for your message. Please reach out to a technical expert in your location here: www.se.com/ww/en/work/support/country-selector/contact-us.jsp
I wired mine up just like this for 240 stepping down to 120 and I have 133 volts Im not sure what to do.
Thank you for your message. We house most of our documentation in a virtual database here: www.se.com/ww/en/download/. If this does not address your concerns, please reach out to a technical support person in your location.www.se.com/ww/en/work/support/country-selector/contact-us.jsp
on the 240/120 section he didn't explain were my black wire gose and if I'm going to have an extra wire to cap or not...
X2,X3,white are together. and black is....???
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Do not connect H2 and H3 together on 10kva model. Burnt 2 of them up $2000 each.
So what did you do with those leads?
Let's say you want to power up a cabin and you have a transformer like that but you also have a generator what should be the appropriate wattage the generator should supply the transformer is a 30 Amp 240V supply good and what will be the Amperage on the secondary side
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Should be 60a
When do we need 480Volts in a single phase system? In my experience ive only used 480V for 3 phase motors or the 277v L-N for lights.
You don't need 480 volts. That is your input. That is why you are using a transformer. You are changing it to 277 volts for lighting, etc. or you could change it to 240/120 for a subpanel to run lights and receptacles in a breakroom, etc or whatever other need you may have. Remember, the 480v in the input. We care about what is coming out of the secondary side. That's what we're going to use.
There are reasons such as a machine control cabinet, in this cabinet you can have only 1 480v source with step down transormers internally installed in the cabinet, this leaves you with a single electrical source that can be locked/tagged out instead of multiple sources which can be confusing and sometimes kills people because they don't verify a dead circuit before performing electrical work in a panel
Can it manage a 12000 watts amplifier
Thank you for your message Tian. We house most of our documentation in a virtual database here: www.se.com/ww/en/download/. If this does not address your concerns, please reach out to a technical support person in your location.www.se.com/ww/en/work/support/country-selector/contact-us.jsp
I have a cuestión ,, for 240 output ,,,X2 and X3 are the neutral , Right,,, ? should be grounded,, ???
120 v on X1 and (x2-x3)
120 v on X4 and (x2-x3)
240 v on X1 and X4,,
but WHY I have 240 v from neutral to ground !!!😢😢😢
* X2 and X3 and the NEUTRAL have to be grounded,,, !?!?😢😢😢
Thank you for your message, Charly Boy. We apologize for any inconvenience caused. For technical support or to find answers to your questions, please refer to our support center: www.se.com/ww/en/work/support/support-center.jsp or reach out to a technical expert in your location here: www.se.com/ww/en/work/support/country-selector/contact-us.jsp
I don’t find this “popular.” Refer to wiring diagram that came with the box instead of talking about options. This video really lacked the info I was looking for.
What about the third leg of 480? Where's it go?
It stays in the panel or capped in the Transformer Junction Box. You only use two legs of 480VAC 3P to step down to 120/240VAC 1P. Took me a while to grasp the concept too. 3P HAS TO BE 3P. 😆
@@martycuhntzmart5635 yea, I figured it out a few days after I posted. Thanks tho brother
This transformer sec terminal is not grounded, it’s against NEC.
How do you wire with 277 only?
Hi, Regio de Mty, thank you for your message. Please reach out to a customer care member in your location here: www.se.com/ww/en/work/support/country-selector/contact-us.jsp
You don’t. You wire 2 phases of 480 to your primary.
At minute 1 explanation is wrong, Do NOT Connect H2 and H3 together for a 480V line input. Isolate H2 and H3 individually with wire nuts. Low voltage explanation is correct.
Its correct, the schematic drawing says the very same thing
Watch it catch fire...
Inquiry only: Is there an American company that still manufactures NON-STEP TRANSFORMERS? 220 to 220 and 110 to 110? In my younger years in the 1950s there are 3 kinds of transformers. The step-up transformer, the step-down transformer, and the non-step transformer. WHAT HAPPENED? Why did the non-step transformers disappeared?
It's not a transformer if the in and out are equal. It's called a wire. lol
non-step transformers are generally sold as isolation transformers these days.
some transformers that step-up/down can be wired as non-step as well, such as the transformer in this video which can be wired as 240v in and 240v out if you want.
What about 208 input?
To 120…