Tap Changing Switch Animation

Tap Changing Switch Animation

Animation of an on-load transformer tap changer, illustrating how taps can be selected without either interrupting supply or short-circuiting winding turns.

The tap changer starts at tap position 2, with load supplied directly via the right hand connection. Diverter resistor A is short-circuited, diverter B is unused.

If the tap changer is moved to tap 3, the following sequence occurs:

  1. Switch 3 closes, an off-load operation.
  2. Rotary switch turns, breaking one connection and passing load current through diverter resistor A.
  3. Rotary switch continues to turn, connecting between contacts A and B. Load now supplied via diverter resistors A and B, winding turns bridged via A and B.
  4. Rotary switch continues to turn, breaking contact with diverter A. Load now supplied via diverter B alone, winding turns no longer bridged.
  5. Rotary switch continues to turn, shorting diverter B. Load now supplied directly via left hand connection. Diverter A is unused.
  6. Switch 2 opens, an off-load operation.

The animation then shows the tap changer returning to its starting position by reversing the above sequence of operations.

Engineering Tutorial Keywords:

  • content
  • three phase tap changer diagram

You May Also Like :

Shunt Vs Series Capacitors Advantages

Shunt Vs Series Capacitors Advantages

Shunt Vs Series Capacitors Advantages Capacitors aid in minimizing losses and helps in reducing operating expenses. Capacitors should be placed where the reactive power demand ...