Distribution Xmer

yes he is telling right.but check the working voltage range of your refrigarator by yourself on the name plate details of refrigarator or in catalogue.

because every equipment has +/- range of working voltage.pls check it.

then should i use stabliser for maintaing voltage profile??

First ask some one to check up the actual voltage. If it is a distribution transformer for residential supplies, the act will not permit 254V.

Contact the electricity board/ supply corporation if the voltage is actually of the 250V order. The question is not whether the equipments will stand or not (it is likely to except the bulbs and electronics) It is when you are supposed to get 230V why you aren't getting it.

Stabiliser is always a good concept with modern equipments (the old ones were rugged and didn't need it I have some 20Yrs old still working without electrical fault still, of course the gas refill I had to to once). Whereas my friends who went for replacement and bought the latest were forced to put stabilisers after breakdown.

In india the voltage is 415 V+- 5%.At 415 the phase voltage is 254 almost.Normally these transformers will have tapping +-5% so at the lowest tap -5% of415 you will get 230 V Phase Voltage.The stabilizer is good idea.Now a days most of them have in built stabilizers .So this must be cutting off the equipment when voltage above or below permitted range.Check this .Also check voltage variations through out a period of 24 hours this will give the pattern.

That means should i inform the electricity Board person regarding the overvoltage?will this overvoltage effect my other equipments??

mainly which equipments like TV, AC, ???

The insulation levels are high .Most of them will be made with wires and cables suitable 1100V .Howver built in stabllizer will cut off the equipment depending upon the variation high or low.To avoid this on AC and Refrigirator use external stabilizers .Howver it is surprising that u get high voltage .may be u are near a substation.You can ask the local electricity board person to correct which he can by changing the taps on the transformer.

Buddy, go look for a local electrician and get your socket voltage checked by his multimeter, most of them support upto 750 V AC. Also if you would like to have one, you can get for around Rs.100 to 150.

If you find the voltage above the working range of your Refrigerator, better go buy a voltage stabilizer and put it to use. Although you will get an automatic voltage stabilizer, still verify before buying. Also assure if it caters for your voltage fluctuation range (you can get that range after monitoring your socket voltage for a day). But most stabilizers will satisfy your requirements.

Connect the stabilizer and get your Ice cubes ready... coz I dont think its wise to have your domestic electrical equipments like refg. n TV running without Stabilizer is any wise..

yes, it is true but check the applied actual voltage of the 11kv side of the transformer

i think he is fooling u. Normally rated 1le phase vtg is 230 V. but almost all equipment are designed to withstand 250V. U check ur equipment rating it must be 230 to 250V. definitely 254V is more but not on very higher side. If u experiance vtg more than this den u should inform ur area's distribution agency its ur right to get good quality of power.

It depends on the country you are in

In Australia our supply is a nominal 240/415 V +/- 6 % with in metro areas in the bush can change because of voltage drop over long distances.

So 254 V is on the limit 240+14.4 = 254.4

It depends on your location, distance and load in relation to the distribution transformer

If your supply system is 220/380 V, 254 V is too high

Most equipment sold with in the local country should be rated to take the +/- fluctuation of 6 %

I know that in some countries the supply can change by more than 20%

I hope this helps

dear friend, the distribution transformer near your house will be of rating 11kV/415Volts. I think you have choosed 440Volts as a general speaking term but actually the transformer output is 415volts. Now this comes out to be around 240V between any phase & neutral. This is an ideal situation, but practiccally the output load on transformer tends to reduce the supply voltage & thus the supply actually is lower than 240volts. But if the supply is still at a higher volts, the refrigerator works as the tolerances are provided while designing any product & thereby your electrician is simply fooling you. thnx

Please check the Neutral connection at both side(Transformer neutral and your home incoming).

Normally distribution trafo neutral and earth connection are loose due to poor maintenance. Phase over voltage is due to poor neutral connection if Trafo is healthy.

he might be telling the truth or not.....first get the vltg checked by a multimeter.....coz of tolerance in transformers, the output wont be exactly 440.....also check the voltage capacity of yo refrigerator...is yo other appliances working? i mean tv,ac?

the transformer voltage you are describing has nominal voltages of 480/277v. The 277v (254v) on your system is a phase to neutral voltage. 240/120v systems are 240v (230v) phase to phase or line to line, not line to neutral. Sounds like the wrong transformer for your home.

According to wiring code sans 10142 (south african national standard) 230V

is a standard voltage and the tolarance of +-10% is allowed meaning 253V is still okay.