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Can you back feed a three phase 480v transformer on the secondary side and get 480?
These Transformers are usually reciprocal, and don't care which side you feed. Some caveats may apply if there are cooling fans, the other voltage is 100KV, this is connected as a wye to high-delta converter and so on.
What else can I help you with?
How many amps can 30 kva transformer 575 volts to 480 volts gives?
for three phase the calculation is 30,000 = 1.73*V*I - simple as that. For single Phase the calculation is 30,000 = V*I - simple as that It is important to note the voltage in the first line is Line to Line (typically how it is specified in three phase power systems), and the second line it is Line to neutral. A 30KVA transformer is the same as 30,000VA to find out the Amps you need to divide the voltage if the transformer is single phase for example: 30,000VA / 480V = 62.5 Amps The calculation for a 3 phase transformer is the VA / voltage / 1.73 for example: 30,000VA /480V / 1.73 = 36.12 Amps
A 240V to 480V Step up transformer with a load of 85 amps at 480v what amperage will the transformer draw if the primary is 240V?
Since this transformer has a ratio of 1:2 the load current on the 480V side just has to be doubled. 85 x 2 = 170A on the primary. 40.8 KVA transformer. To prove this just find the KVA of both sides and they should be equal.
How do you wire 240V to 480V dry type transformer 15kw?
To wire a 15 kW dry type transformer for a 240V to 480V configuration, first ensure that the transformer is rated for this voltage conversion. Connect the primary side to the 240V supply by connecting each of the two primary terminals to the respective phases of the 240V supply. For the secondary side, connect the output terminals to the load requiring 480V, ensuring that the load is compatible with the transformer rating. Always follow local electrical codes and safety standards, and consider consulting a licensed electrician for installation.
What KVA transformer is needed to convert 480v - 240v 13.5A load?
Ohms law says that watts are equal to volts times amps. 240v X 13.5a = 3240 va VA / 1000 = Kva So, your load requires 3.24 Kva. The transformer should have a rating greater than this as a safety factor, so you would choose the next larger size, in this case probably a 5 Kva transformer with a 480v primary and a 240v secondary. Your local electrical codes may require a larger safety factor, so you would want to consult them before buying the transformer!
Can you convert 240V 3 phase to 208V 3 phase?
Yes, with an auto transformer. It is a transformer with multiple taps on the winding. Connect the 208 volts across the common tap and 208 volt tap. Then connect the load across the common tap and the 240 volt tap.208 VAC usually comes from one floating side of a Delta 3 phase transformer.240 VAC usually comes from a grounded center tapped transformer.Using an autotransformer would be very hazardous and violate code. Probably tripping the 208 VAC breakers.The only way to do it correctly would be with a transformer with a 208 VAC floating primary and a 240 VAC grounded center tapped secondary.
A transformer has a primary volt of 240v and a secondary volt of 48v what is the turn ratio?
3
Why does the primary side of a step down transformer burn out and not the secondary of a 480V to 240V transformer?
Sounds like the wrong size fuse protection was used. The transformer should be protected to its kva capacity.
What is the typical voltage of a control transformer for a three phase 480 volt starter?
Most 3 Phase 480V Starters are controlled by 120VAC. This is because the coils on the contactors (starters) are 120VAC. Just ensure the voltage matches the coil.
How do you get 480v circuit from 120v?
You can use a step-up transformer. Transformers are rated in primary voltage, secondary voltage, kVA, phases (single and three) and other parameters then equipped with indoor and outdoor enclosures. Be sure to consult a professional engineer or electrician when choosing and installing a step-up transformer. There are several NEC issues involved as well as choosing a transformer that is right for the type of load you have. One without the proper licensing AND knowledge of transformer circuits should never install 480V wiring or transformers.
How do you get 480 vac?
1. With a transformer 2. With a specialized power drop from the power company. 3. Across two hot phases in a 240v two or three phase power drop in Europe, etc (not sure about this one, I have heard that it might not work this way).
How do you convert 380v 3 phase to 220v 3 phase?
Mathematically, just divide 480 by the square root of three. Electrically, 480V refers to the line-to-line value of a three phase system. For example, measure the voltage across A-phase and B-phase and you'll get 480V. 277V is the line-to-neutral value. Measure the voltage across A-phase and the neutral conductor and you should get 277V.
How many wires do you need if you are stepping up single phase 120-240V to 480volts?
Five wires. Two on the primary side, connected to each 120V leg, giving a primary voltage of 240V. Two on the secondary side, one connected to neutral, and the other the new 480V hot. One connecting the frame of the transformer and the box containing it to ground. Note: you will only get one phase power out of this configuration - to get three phase output, you need three phase input, three transformers, and a lot more wires.
How many amps can 30 kva transformer 575 volts to 480 volts gives?
for three phase the calculation is 30,000 = 1.73*V*I - simple as that. For single Phase the calculation is 30,000 = V*I - simple as that It is important to note the voltage in the first line is Line to Line (typically how it is specified in three phase power systems), and the second line it is Line to neutral. A 30KVA transformer is the same as 30,000VA to find out the Amps you need to divide the voltage if the transformer is single phase for example: 30,000VA / 480V = 62.5 Amps The calculation for a 3 phase transformer is the VA / voltage / 1.73 for example: 30,000VA /480V / 1.73 = 36.12 Amps
What is the high leg in a three phase 480 panel?
there isnt a high leg in a three phase 480v panel only on 240v panels
How is line voltage computed in a wye three phase cofiguration?
Line voltage equals phase voltage multiplied by the square root of three. a.k.a. E l = E p X 1.73 In a 3 phase 480v system the phase voltage is 277v. Therefore E l = 277 X 1.73 = 480v
How do you convert 480v to 120v?
to derive 120 volts from 480 volts you have to use a transformer, based on your needs. If you needed 100 amps at 120 volt single phase you would need a 12kva transformer. This is just an example.
How do you convert 1 phase 240 volt power to 3 phase 480 volt power?
Any two legs of the 480V will give you 240 V Single phase. I apologize for the wrong information here. A friendly member reminded me of the correct answer. I stand corrected. Any two legs would be at 480 single phase. One leg to neutral will give you 277volts not 240 (408/1.73). You would need to install a step down transformer on the 277v line to achieve 240v.
