Answer / ramprasad sharma

We can check any transformer with meggar for ground fault
it means resistance value between winding and body. we can
check insulation value between primary winding and
secondary winding.

presently I am working in private sector.In powergrid interview recruiter asked me why you join this organization.

0 Answers   Power Grid,

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what type of loads are inductive load & resistive load ?how they different between each other ?

5 Answers  

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Why Two Transformers aside shoud be supperated by concreted wall?

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A 230V, 60W bulb when connected to 230v supply what current and power will consume, if same bulb is connected to 200v what purrent and power will consume?

3 Answers  

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what is Over current, earth fault (O/C+E/F) ?

2 Answers  

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I need to calculate the Battery bank back up for below configuration:- UPS - 120 KVA Battery Bank - 200Ah Volt of each cell - 12 V Total No of cell - 34 No's Can you please help me to get the battery back up time for above configuration...? along with formula

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Differnce between earthing and nuetral

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how to 2 phase supply from 3 phase

1 Answers  

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From what on-site components does the HT panel monitoring the bus-bars in a 11kV system take inputs?

0 Answers  

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

0 Answers  

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Please tell me what is the difference between online UPS & OFF line UPS?

2 Answers   HAL,

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What current can be carried by 25 sqmm copper cable safely?

6 Answers   Bharti,

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