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Change in Frequency

Why do we maintain 50hz frequency? What happens when we change this frequency to any other value?
Asked by: anil.yelamarthi | Member Since Dec-2009 | Asked on: Dec 11th, 2009

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Showing Answers 1 - 5 of 5 Answers
singh_harsh

Answered On : Dec 31st, 2009

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Appliances may not operate efficiently or even safely if used on anything other than the intended frequency.

  
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anilsabaji

Answered On : Jan 8th, 2010

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If the question is for changing the frequency of Power supply to Induction Motors, then, it will lead to (1) Increased Iron losses (2) run at a differenct speed close to its new synchronous speed (120F/P), (3) lead to reduction in Torque capacity.

  
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napster.zatac

Answered On : Jan 23rd, 2010

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It has been set as standard 50Hz for india and 60Hz at many other places. Either you believe this or not but FREQUENCY IS NEVER CONSTANT. It keeps on changing with load at the generation unit. As the load increases freq decreases, this is only because of the change in torque angle due to change in load, to fulfill the requirement of the load we provide more input and hence freq. changes normal to 50Hz. this constant frequency is useful for parallal operation of generators such as in power grids. Any change in freq. of two units will cause harmonics and heavy transients which may cause critical damage! To avoid this all the power generation units or power plants are synchronized with each other having const freq 50 Hz. if any power plant looses its synchronism it is notified immediately or it will be disconnected from every other unit!! to avoid losses!

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sankar_jkpm

Answered On : Feb 3rd, 2010

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In our India, all the electrical power generation is based on 50 Hz. (50 cycles per second) with respect to the production of flux in alternator. So the electrical utility products are designed for 50 Hz in our india.The frequency variation may be occur in generation side only not on load side.If the frequency can vary from 50 Hz means, the AC waves should be change and it tends to malfunction / damage for utilities.

  
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maxandrean

Answered On : Jul 5th, 2010

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AC Electrical Network need to have a syncron phase for them to work. Any differences in term of frequency will shift out this syncronisation and lead the whole system to fail.

  
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