Boosting voltage with a transformer
Guidelines for increasing voltage through the use of a transformer. January 31, 2001
I have a glu-all machine that requires 480-3 phase power. I got a bid from the electric company and they wanted over $8,000 to run 480 to my building. Does anyone know about using a transformer to boost the voltage to 480?
Most machines can use transformed power. Be sure that any variations in the input power, which will cause variation in the output power, fall within the 10% allowance that most machines require. This means that a 480 volt system can only handle + or - 10%. Some machines will not accept this much voltage variation.
I have used transformers many times with no problem. The installation of a voltage stabilizer is suggested.
Dave Rankin, forum technical advisor
You can use a transformer with the corresponding primary and secondary voltage system. Just be sure that the rated output of the transformer (given in kVA) is at least by ca. 20% higher than the power input (demand) of the consumer(s) in kW. To get kW, multiply HP by 0.75; e.g. 10 HP motor has power output 7.5 kW. The equation would be: 1HP=0.75 kW.
The incoming power at your electric service must be 3 phase. If it isn't, you need to have a voltage inverter, or to change the motors to single phase. Either way, it will be expensive.
If your service is 3 phase, determine if it is large enough to handle adding the machine. How many amps is your machine rated for? What size in amps is your service? How many and what size breakers are in your service panel now?
3 phase transformers are expensive. Another way to do this is to buy 3 single phase machine tool transformers and connect them together as one 3 phase unit. I have done this several times for customers and it works very well. I suggest that you have a competent electrician do this hook-up for you.
Would you like to add information to this article?
Interested in writing or submitting an article?
Have a question about this article?
Have you reviewed the related Knowledge Base areas below?
KnowledgeBase: Business: Plant Management
KnowledgeBase: Dust Collection, Safety, Plant Management
KnowledgeBase: Dust Collection, Safety, Plant Management: Safety Equipment
KnowledgeBase: Solid Wood Machining
KnowledgeBase: Solid Wood Machining: General
KnowledgeBase: Solid Wood Machining: Setup and Maintenance
KnowledgeBase: Woodworking Miscellaneous
KnowledgeBase: Knowledge Base
All rights reserved. No part of this publication may be reproduced in
any manner without permission of the Editor.
Review WOODWEB's Copyright Policy.
The editors, writers, and staff at WOODWEB try to promote safe practices.
What is safe for one woodworker under certain conditions may not be safe
for others in different circumstances. Readers should undertake the use
of materials and methods discussed at WOODWEB after considerate evaluation,
and at their own risk.
335 Bedell Road
Montrose, PA 18801
Copyright © 1996-2021 - WOODWEB ® Inc.