Answer / mrudang

it is not OT

it is OTI (oil temperature indicator )
which we are using in transformer to knnow the temperature
in transformer tank which is controlled by radiator
its temperature limit is 50 degree celcius

Answer / ranjan maithan

OT means oil temperature of transformer.
The limit is maximum ambient temperature of your site of
installation+50 deg C

principle of power export and import in captive power plant.Is it depends upon voltage,current or frequency?Plz explain briefly.

1 Answers  

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what happens if dc supply is given to the transformer?

10 Answers  

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1)Why potential transformer primary site grounded? 2)can be loop between neutral & body for grounding? 3)What is the difference between ELCB &RCCB? 4)Why we use iron core in transformer insted of wooden core? 5)what is the principle of excitation? 6)Why we test the core balance test for transformer? 7)what is creepage?What is the creepage length for insulators at different voltages? 8)How much type of relays used for differential protection of generator,transformer & busbar protection?

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What are test signals and their significance?

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Why we find the sensitivity for the CT's to check?

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Why the transformers are rated in kva?

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what will be the neutral to earth voltage while checking by the Digital multimete? and why?

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why motors are rated in HP?

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