Simultaneous trip of incoming and outgoing breakers of 400kv/220kv trnasformer. What are the probable causes?

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how to calculate cable size

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How to calculate per unit impedance of transformer?

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What size cable (based on voltage drop) is required to supply a 40 A three phase boiler if the wiring system is 75V single insulated cables installed in non-metallic rigid conduit 56m from the main switchboard? Voltage drop in the consumer's mains is 8V.

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define transient state &steady state

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how many types are their in switchyard or substation(like D,I TYPE), what is differant between them

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what are the types of towers in HT transmission

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what are the main Parts of VCB

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what is the working principle of ceiling fan and table fan?

10 Answers   ABC, Tata Steel Limited,

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As we use capacitior bank in 3ph ckt for improvement of PF, why not we use capacitor in single phase domestric use, at our house their are many inductive equipments,like fan,mixer,tube choke,air conditioner they also draw PF... by using capacitor can they improve PF. if yes--what are advantage and how to connect a capactor in single ph,and which type of capacitor if no- what are disadvantages.

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What are capacitive,resistive,inductive surge absorbation? What is ferranti surge absorber? What is lagrangian cost? What is Px operator?

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How to calculate Voltage regulation of 22 KV Over head Line.

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