why we do occ & scc test in transformer ?how we can do it ?

2 Answers  

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WHY WE USE SIEMENS plC

3 Answers  

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A 200 KVA UPS's load current is 70 A. We want to provide a Generator back up. What capacity of DG required for this ?

1 Answers   Reliance,

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What are the temperature elements?

0 Answers  

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1ampear me kitna watts hota hai aur elcb ka pura naam kya hai

18 Answers   Al Khayyat, Alpha G, BEC, Bhel, CGS, Electrical, Fiem, Firmenich, HLG Habtoor Leighton Group, Jash, Kandia, Maruti Suzuki, Minda, NTPC, ONEIC, Pace Process Controls, SMTC, SR, Sunrise Electrical, Sushil Enterprises, Suzlon, Voltage,

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IN THE CASE OF AN ELCB, IF THERE IS ANY UNSTABILITY BETWEEN PHASE AND NEUTRAL IT MAY TRIP. BUT MY QUESTION IS WHEN A LOAD IS CONNECTED IN BETWEEN P AND N, THE LOAD CONSUMES SOME POWER AND THERE IS A DIFFERENCE IN NEUTRAL WITH RESPECT TO THE PHASE. THUS ACCORDING TO ME, THE ELCB WILL AUTOMATICALLY OPERATES WHEN EVER THE LOAD CONSUMES-- I KNOW IT IS WRONG. BUT THE SOLUTION IS?????????

1 Answers   KSEB,

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HT motors are generally connected in star, what will be the effect if we connect HT motor in Delta?

6 Answers   Equate, Ion Exchange,

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How many types of timer ?which timer are used star delta feeder

1 Answers   BMM Ispat,

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draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it

0 Answers  

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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.

0 Answers  

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how to select earthing conductor size of amy motor/panel etc.

1 Answers   Sony, VBB,

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why we use tapechanger in primary side of transformer

5 Answers   Bhel, L&T,

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