Selection of Transformer

Reply to Thread

Discussion in 'General Electronics Chat' started by asimraufawan, Jan 12, 2009.

Reply to Thread
  1. Jan 12, 2009 #1
    asimraufawan

    Thread Starter Member

    Jul 4, 2008
    29
    0
    Hi everyone,

    How to select the transformer VA rating for an application with respect to power cconsumption.

    Thanks
     
    #1 Reply
  2. Jan 12, 2009 #2
    Wendy

    Moderator

    Mar 24, 2008
    20,993
    2,731
    Actually it is pretty basic, on the surface at least. Voltage and current you need to feed with the power supply.

    Transformers don't use much wattage themselves. They transform voltages and currents, and do so very efficiently.
     
    #2 Reply
  3. Jan 12, 2009 #3
    mik3

    Senior Member

    Feb 4, 2008
    4,846
    67
    If you know the VA of the machine then choose one with the same VA or higher. If you know the real power (P) consumed by the machine and its power factor (pf) then you can calculate VA by:

    VA=P/pf

    Again choose a transformer with he same or higher VA rating.
     
    Last edited: Jan 12, 2009
    #3 Reply
  4. Jan 12, 2009 #4
    eblc1388

    AAC Fanatic!

    Nov 28, 2008
    1,543
    102
    VA rating = RealPower/pf :confused:
     
    #4 Reply
  5. Jan 12, 2009 #5
    mik3

    Senior Member

    Feb 4, 2008
    4,846
    67
    Ohhh yes, you are right. Just got confused. ;)
    I corrected it too.
     
    #5 Reply
Loading...
Related Forum Posts:
  1. europlugs

    Transformer selection for Power Supply

    Posted by europlugs in forum: General Electronics Chat
    Replies:
    0
    Views:
    246
  2. BastiaanMDC

    MAX17595A Transformer selection Bipolar secundary

    Posted by BastiaanMDC in forum: The Projects Forum
    Replies:
    1
    Views:
    183
  3. tahir mehmood

    industrial transformer selection

    Posted by tahir mehmood in forum: The Projects Forum
    Replies:
    8
    Views:
    1,102
  4. vead

    selection of transformer

    Posted by vead in forum: The Projects Forum
    Replies:
    2
    Views:
    3,864
  5. vead

    selection of capacitor

    Posted by vead in forum: Homework Help
    Replies:
    10
    Views:
    4,818
  6. handyalbert11

    Transformer selection

    Posted by handyalbert11 in forum: General Electronics Chat
    Replies:
    8
    Views:
    1,843
You May Also Like:

  1. Servo Motor Control with an Arduino

  2. IoT-Based Parking Designed to Save Users Time and Money

  3. Use an Arduino to Control a Motor


Load More