How can we calculate ngr resistance for a generator and Transformer ? What type of transformer requires ngr ?

5 Answers   Welspun,

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How to calculate per unit impedance of transformer?

0 Answers  

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Does induction motor start with dc power supply????

4 Answers   Essar,

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what are effects of harmonics in the three phase a.c power system ?

2 Answers   AIIMS,

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differentiate between c curve and d curve MCBS?

1 Answers  

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wich type of cable is selected for wiring of 20hp motor?

5 Answers   Alchemist,

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Hi everyone, I'm Lachuu, recently joined automation company as PLC Engineer. I have certain basic question, I request all big gurus and seniors to answer these question. Because this will be very helpful to me as well starters like me. How to design a control circuit (ex: pick & place - my current project) Yamaha robot PxYx series controller RCX222, using 6 cylinder double acting, plc keyence kv p16r 2 expansion unit for input and output each. How to select panel terminal mcb elcb powersupply. My main concern in some projects how to select dc power supply, mcb rcb(I came across dif bt b c d curves, but stil confusing, pls help me :-(. I would really appreciate all who are going respond to this question.

0 Answers  

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we are operationing 3NOs 800 Kva generators by singronyus.specialey evening time our panel trip. the panel showing generator earth fault

4 Answers   RRB,

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How to determine earth fault level to set relay for a normal distribution system of 11 kV , 100 A load????????

1 Answers   TCS,

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why induction motors are rated at 0.8 power factor.

0 Answers   Bhel, TN,

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What is meant by Guard relay ?

2 Answers  

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We have a 33/11kv switchyard having 12.5 MVA power transformer. We export & import power through this transformer. When we export power, the PF will be depend on GRID PF & when we import power the PF will be depend on our load PF. but the problem is that,when neither we export nor import but our 33KV vCB is in close position,our meter read the power factor 0.14 to 0.25 at that moment. So how can be we improve the power factor at that moment.

3 Answers  

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