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What are the transformer losses?

Answer: TRANSFORMER LOSSES – Transformer losses have two sources-copper loss and magnetic loss. Copper losses are caused by the resistance of the wire (I2R). Magnetic losses are caused by eddy currents and hysteresis in the core. Copper loss is a constant after the coil has been wound and therefore a measurable loss. Hysteresis is loss …

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Define IDMT relay?

Answer: It is an inverse definite minimum time relay. In the IDMT relay, its operating is inversely proportional and also a characteristic of the minimum time after which this relay operates. It is the inverse in the sense, the tripping time will decrease as the magnitude of fault current increases.

Which power plant has high load factor?

Answer: All base load power plants have a high load factor. If we use high efficiency power plants to supply the base load, we can reduce the cost of generation. Hydro power plants have a higher efficiency than thermal & nuclear power plants.

What is the difference between earth resistance and earth electrode resistance?

Answer: Only one of the terminals is evident in the earth’s resistance. In order to find the second terminal, we should recourse to its definition: Earth Resistance is the resistance existing between the electrically accessible part of a buried electrode and another point of the earth, which is far away. The resistance of the electrode …

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Why we do 2 types of earthing on transformer (i.e. :) body earthing & neutral earthing, what is function. i am going to install a 5oo kva transformer & 380 kva DG set what should the earthing value?

Answer: The two types of earthing are Familiar as Equipment earthing and system earthing. In Equipment earthing: body (non-conducting part) of the equipment should be earthed to safeguard the human beings. System Earthing: In this neutral of the supply source (Transformer or Generator) should be grounded. With this, in case of unbalanced loading neutral will …

Why we do 2 types of earthing on transformer (i.e. 🙂 body earthing & neutral earthing, what is function. i am going to install a 5oo kva transformer & 380 kva DG set what should the earthing value? Read More »

What is ferrantic effect?

Answer: Output voltage is greater than the input voltage or receiving end voltage is greater than the sending end voltage.

What is SF6 Circuit Breaker?

Answer: SF6 is Sulphur hexa Fluoride gas. If this gas is used as arc quenching medium in a Circuit breaker means SF6 CB