What are objectives of energy managements ?

1 Answers   Kirloskar, RR,

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how to minimize earth resistance upto 2Ω, if the resistance is 6 Ω ?

0 Answers  

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Why is the diffrential protection in DG. What if the CT polarity is reversed while connecting for the same type of protection? How polarity can be made ok?

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What is mean by retrofitting of machine tool please brief.

1 Answers  

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What is the resonant peak?

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what is ac servomotor??

7 Answers  

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why delta delta connection generally not use in transformer

4 Answers   Lanco,

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what is the difference between old fan regulator and new fan regulator

1 Answers  

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If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.

0 Answers  

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in three phase circuit neutral failure what happend in homes

4 Answers  

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Normally the starter used to reduce the starting current.but the dol starter do not it,so why we use it?

4 Answers  

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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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