Answer / 3nath

delta connection is used where high terminal voltage is required
star connection is used where high current is required

Answer / ashok mishra

star connection is used where nutral terminal is required
usually 11/.440 kv transformer

which bulb is greater iluminited, 60w and 100w are conected in series?

2 Answers  

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how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)

0 Answers  

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Am using an electronic digital display to see the RPM of ABB ACS 550 drive, which is showing negative value when the motor & drive in stop mode but it is showing correct value during the run mode. can anyone help me out??

2 Answers   Bala Power Solutions,

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what is the purpose of reactor in electrical substations ?

2 Answers  

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Why heat produce in AC machine higher than DC machine?

2 Answers  

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Difference between Earthing Truck & Earthing trolly for HT panel

0 Answers   Moolchand Medcity,

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diesel generator not getting start so whats problems will happen to DG and how we can start DG

1 Answers   Lodha,

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What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

0 Answers   Glenmark,

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How can we step up ac and dc ?

1 Answers  

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why transformer neutrol is grounding

6 Answers  

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How to model two generators into a single generator ? Eg. two generators connected to a bus, would like to model it as a single generator connected to a bus.

0 Answers  

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Three set (each phase contain 2 cable of 400 mmsq CU XLPE AWA) of single core cables are connected to 11 KV motor of 14 MW & the switch gear supplay is taken from 11kv feeder & this supplay taken from 275 KV substation. Problem is one pair cable(L3- 2 cable ) getting very hot & gland melted and damaged in switch gear side. the other two cable haven't any more hot(ambient temp only & L3 haveing 95- 100 Degree C. The same problem happened in 275 KV substation switch gear side also where the supply taken for 11 kv switch gear. But here L2 phese cable had problem. Why it is happening like this?. The cable having temperature different at different location from gland side inthe case of 11KV feeder of 275 kv substation. why ?

2 Answers  

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