Answer / ravi sekhar

its used for the high ratin of mcb its not tripped

What is mean by Sensitive Earth fault & what are the effects

1 Answers   Enteg Technologies,

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Energy metering: On the property I am renting, the supply voltage is 2 x 110 volts. These 2 x phases enter a energy meter which then exit the meter to over head lines to my house. Question 1. The meter is single phase 240 volts but is being used as 2 x phase(2 x 110volt), is this acceptable? if not, please give me the reasons. The meter details are as follows: 60Hz 15amp Imax 100 amp Kd 3,6 Wh/R 1 fase 3 hilos Model FX 231. I think it was manufactured in Brasil From this meter, the cables run along over head aluminum conductors,I estimate the cross sectional area to be 25mm diameter, but the neutral is only about 10mm square diameter, which cover a distance of 170 meters and then terminate with an underground cable of 65 meter length, total length = 235 meters. There must be a huge voltage drop over this length. This line is protected with 2 x 200 amp aluminum fuses after the meter, there is no main switch in the distribution board. These 2 phases connect directly onto 2 busbars. Surely the neutral should be the same size as the conductors if not more? Question2. What are your thoughts about this installation, should there be better protection, is the neutral too small? During the night, the lights dim then brighten all the time, this cannot be good for my electrical appliances. In my home, I only have a small electric geyser and fridge, my stove works off gas. But when i use other appliances like the washing machine or microwave oven, the light dim. The internal wiring of this house is done with solid hard drawn copper wires and of course, they have to be under rated. I am a retired electrician by trade, but not on the metering and over head mains side, my experience is on the factory maintenance side of things. Your expertise on these matters will be greatly appreciated. Please inform me how to rectify or make any improvements Kind regards, my power bill is very expensive, so I need to know how to bring it lower. Kind regards, Brian

1 Answers  

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how mass curve differs from hydrograph.

0 Answers  

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i have flexible wire. size of conductors is 0.190 mm & no.of conductors are 48. then size of wire comes 1.37 sqmm instead of 1.5 sqmm . the what is tolerance for this size.

0 Answers  

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Why Neutral Earthing pits and body earthing is interconnected

3 Answers   Taj Group,

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What is UJT PNP, NPN transistor & working principles?

1 Answers   TATA,

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i am getting to neutral earth voltage zero ,is this a perfect earthing ?

3 Answers  

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Sir Power transformer :- (in generating station) Alternator terminals side - Delta HT transmission line side - Star Why?

4 Answers   Kirloskar,

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What is Residual Voltage & Residual Current?

4 Answers  

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what is the purpose that we use PLC system in power system

2 Answers   Glatt, MTS,

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How to calculate no of EARTH PIT? Describe the formula as per IS standard?

0 Answers  

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what is the relation between the size of the machine and the frequency? (when the frequency increases the size of machine will increase,why?)

2 Answers  

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