Answer / sewagudde

the automatic voltage regulator (AVR) senses changes in
voltage and sends a signal to the controller on the tap
changer to either raise or lower the tap.it should be noted
that the tap changer is always located on the HV side of
the transformer inorder to interrupt smaller currents as
compared to the LV side

Answer / debasis

There is controler which sence the voltage & give command
to a stepper motor that how many step(s) & what direction
have to go for achiving the required voltage.
And the changeover held inside a oil chamber to avoid
sparking.

i will applied in 1U-1W on 440 volt primary delta side. what is the result of magtic balance test

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does buccholz in a transformer use batteries

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What is difference between start imitation and start interlock for 3 phase motor protection ?

0 Answers   Siemens,

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How to check the specific gravity of the two 12 V batteries connected in series to a 24 V UPS and inverter ? will we have to disconnect all the connections and turn off the UPS and inverter or not ? will we have to check specific gravities in each cell of the two batteries ? what is the name of the instrument that is used to check the specific gravity and whats the procedure to check the specific gravity with it ? thanks

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How to connect frequency meter in metering circuit?(single phase and three phase frequency meter)phase to phase or phase to neutral

7 Answers   ABB,

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list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.

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what are upstream faults and downstream faults in power system

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What is the difference between MCCB & ACB Where it can be used

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What is shutdown of electrical sub station?

0 Answers   UCEP Bangladesh,

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why the rating of transformer in only KVA not in others?

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What is the advisble power factor to be maintained in grid connecting power generation plnats without any effecting the generator.

1 Answers  

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Why we use Fuse in transformer in secondary side.Why we dont use fuse in primary side?

1 Answers   Care,

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