How To Examine Your Power Transformers - Miracle Electronics

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How To Examine Your Power Transformers - Miracle
Electronics
Power transformers in India are very important
for the reception of safe amounts of electricity
within homes, offices, and factories to help
appliances perform efficiently. These
transformers are divided into two categories
step up and step down transformers. Step up
transformers increase the voltage to the
required level if it is too low for an appliance
to run while step down transformers reduce the
voltage to an acceptable level if there is an
increase surge of power supply coming in, so
that the appliance is not damaged. Thus, both
step up and step down transformers are important.

• As much as these transformers are important,
  equally important is there efficiency and safety.
  The equipment must work up to the expected
  performance level, while keeping the operators
  and others around safe. While it is advisable to
  call in a technician to inspect your transformers
  in case of any errors or doubts of error, it is
  also advised that you keep a regular check on
  your transformers by making these simple yet
  important examinations.
• First and foremost, make sure that all the power
  sources have been shut down and the transformer
  to be checked is properly de-energized. If not,
  it could lead to accidents and outcomes that are
  unexpected.
• Next, you need to detach all the wires carefully.
  For this, you need to take a screw and unhook
  the wires from the transformer terminals. If the
  wires are labeled well such that

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• you can easily plug them back into the right slot
  after examination, its fine. But, if not, you
  need to use tapes, pens, and markers to note down
  every individual wire and the respective
  terminal each one needs to be plugged into again.
• The voltmeter will be having two lead wires red
  and black. You need to turn on the
• meter and place the red wire into the Ohms
  opening. Then, you need to switch on the
  voltmeter to read the resistance. Also, remember
  to touch the black wire to the metal frame of
  the transformer.
• Next, you must tests the transformers terminals
  and that too, in this order H1, H2, X1, and
  X2. With each terminal, the meter should read as
  infinite Ohms. Any resistance in the ohmmeter
  means that there is a conductive path from the
  winding to the transformers frame. This means
  that there is an internal problem with the
  windings and that the transformer will not
  function.
• Apart from testing the terminals, you also need
  to check the continuity of the coils. For this,
  you must touch the black wire to the H1 terminal
  and the red wire to the H2 terminal of the
  transformer. Doing this, the meter should give a
  resistance reading in Ohms. The same test should
  be performed on the X1 and X2 terminals. If any
  terminal shows infinite Ohms or Open on the
  screen, it means that wires are broken, and that
  the transformer will not function properly.
• Lastly, to test the isolation circuit, you need
  to touch the red wire to the H1 terminal, and
  the black wire to the X1 terminal to have the
  meter reading infinite Ohms. Similarly, the test
  must be performed on the H2 and X2 terminals. Any
  resistance means the isolation of the
  transformer has an issue, and that the primary
  and secondary are shorted together.
• For any of the above mentioned issues, once
  detected, you must immediately contact the
  transformer repair company to take care of the
  issue. While transformers are machineries and
  can ruin or damage at any point of time,
  purchasing standard quality transformers reduces
  the likeliness of this situation and increases
  the lifespan of the equipment. This is why you
  must get in touch with Miracle Electronics to
  get your hands on the best quality power
  transformers in India that are RoHS compliant
  and REACH compliant, and are also available with
  CE and UL marks on request.