Initially many countries had V, since it was considered safer for humans. In the US, there were so many V appliances in use, that it was deemed an unreasonable waste to switch to V and render them useless.
This is more of political issue than pure engineering or economic problem. We went through an interim solution, i. Suppose wires A, B, and C are coming in to your house, and wire B is grounded.
If you use A-C, you get V which is good for new appliances. Now, the entire country is V. It took more than 10 years. Activity points 5, Unless you are talking about designing transformers? The deciding factors are current v cable thickness. I tried to gather info. Lets start from Edison who invented Electricity. According to some sources Edison's original lightbulb was designed to work with around V DC. More voltage means more insulation required. More current means more heating generated.
You have to choose one of them. And hence the equipment cost reduces. Of course this is the single phase voltage, while the real power is delivered at 3-phase. Keeping in mind the higher the voltage the better, the limit was the VIR vulcanised india rubber insulation used on cables at the time.
Overhead transmission lines carry very high voltage to reduce heating loss in transmission. As I said earlier more voltage means less current and less current means less heat generated, and less heat means less loss of energy. The Hz doesn't make any difference. At volts you need to draw twice the current for the same power. Wiring heats up with current so you have more heat with the lower voltage.
This could lead to more fires. I think because of more current more no. But the increased voltage will push more current through your body if you accidently contact live wires. This has a greater potential of causing a death. Can any one tell me which is easier? The requirements on insulation are actully more stringent for the V system. However, when the switch occurred, the electrical companies and the regulatory bodies made sure that the test voltage was the same, i.
But if there is no voltage difference, you could at your own risk try to use the appliance for a short time. Be especially careful with moving, rotating and time related appliances like clocks, shavers and electric fan heaters.
To be sure, check the label on the appliance. Some appliances never need a converter. This socket also works with plug E and plug F. This socket only works with plug D. When we increase the frequency of the generation, simultaneously, the output voltage also increases. Hence the insulation strength to increase the increasing voltage. Corona Losses also decrease when the frequency of the system decreases.
So that 50 Hz power system have less corona losses. Much of Southern California operated on 50 Hz and did not completely change the frequency of their generators and customer equipment to 60 Hz until around Some projects by the Au Sable Electric Company used 30 Hz at transmission voltages up to , volts in In Mexico, areas operating on 50 Hz grid were converted during the s, uniting the country under 60 Hz.
Westinghouse Electric decided to standardize on a lower frequency to permit operation of both electric lighting and induction motors on the same generating system. Although 50 Hz was suitable for both, in Westinghouse considered that existing arc-lighting equipment operated slightly better on 60 Hz, and so that frequency was chosen. Frequencies much below 50 Hz gave a noticeable flicker of arc or incandescent lighting.
In General Electric Corporation, which was affiliated with AEG in Germany, built a generating project at Mill Creek, California using 50 Hz, but changed to 60 Hz a year later to maintain market share with the Westinghouse standard. Note : Us decided to change their supply system, but they dropped their plan, because of large home appliances works in 60 Hz, if you apply 50 Hz, it does not work well.
But for the higher load such as induction stove, heater, geyser etc they use frequency converter. Save my name, email, and website in this browser for the next time I comment.
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