Author Topic: Step down transformers  (Read 1330 times)

0 Members and 1 Guest are viewing this topic.

Offline Austwide

  • Trade Count: (0)
  • **
  • Forum Posts:
  • Frankston
Re: Step down transformers
« on: June 27, 2017, 11:12:05 PM »
Was Gav saying that machine is 240 watts or giving an example?


If it's not written on the machine dataplate, the input fuse to the transformer and output from the transformer would give a guide. 


A 1 A fuse x 240 V= 240 VA
A 10 A fuse x 24 V= 240 VA


VA x power factor (typ 0.9) gives watts.


267 Watt x 0.9 = 240VA


VxIxPF= w


See if anyone can read what their transformer is rated at, if no one can help, use that formula and see how it compares to whats available. Also try to compare sizes. The fuse ratings will be rounded off and may also have a safety margin, so not totally accurate or reliable.