I've heard that most of the substations are rated in multiples of 1.11 because of form factor.What is form factor?

3 Answers  

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I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase, before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???

1 Answers  

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when we start the tube light, then it takes initially 1100 volt, after glow it takes 120 volt?(when we give 220 volt a.c.)

3 Answers  

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why starting current is high and resistance is almost 0 during the starting of motor dc motor...?

0 Answers  

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heat can flow from a body at low temperature to a body at higher temperature only when ........ is supplied from an external source A). Voltage B). Current C). work D). Mass

7 Answers   BMRCL,

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Why the transformers are rated in KVA ? in new view

3 Answers  

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what is the basic principle of TV camera?

0 Answers   BZU,

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What do you mean by a voltage transformer?

0 Answers  

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electical engg basic question

1 Answers   Power Plant,

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How to calculate the rating of ELCB OR RCCB for an equipment?

2 Answers  

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What is the function of under voltage release ?

0 Answers  

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why we use tapechanger in primary side of transformer

5 Answers   Bhel, L&T,

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