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| Why 50 hz? | ||
| Author z315 Views 2 Posted at 2008/8/26 05:51 [View In Forum] | ||
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Does anyone know why frequency of power line is 50-60 hz?drdztlc drdztlc drdztlc We accept that as basic rule. |
| Reply No. | Replier | Total Replies 18 [View All Replies] [New Reply] | Replied at |
| 1 | edu | Why 50 hz? because if it were below 50Hz, we would see an annoying flicker in bulbs. and it gets expensive to generate and transmit above 60Hz. |
2008/8/26 05:51 |
| 2 | chdd | Why 50 hz? |
2008/8/26 05:51 |
| 3 | htc2498 | Why 50 hz? increasing poles means more cost, icreasing speed means more losses and more wear-n-tear. Also higher the freq, higher the line-loss (higher impedance,more skin effect, more corona losses etc etc) |
2008/8/26 05:51 |
| 4 | netlgc | Why 50 hz? i don't think we would choose the same frequency again if we could choose it. But nowadays all devices work on this frequency so we're stuck with it. |
2008/8/26 05:51 |
| 5 | spacebac | Why 50 hz? I think, it's a mechanical problem, cause turbines in power engines, can not rotate too high. speed So people decide some time ago (I think more than 100 years ago) to use 60Hz in some countries, and 50hz in other countries. Nowadays, it's become an universal frequency in all power lines. |
2008/8/26 05:51 |
| 6 | gao51755775 | Why 50 hz? Its always a tradeoff between a few parameters. One problem rises with frequency, the other decreases. You have to select a tradeoff point. The fact that people in different locations chose close freqs of 50 and 60 hz proove that this is the right frequency range. if we were to choose it again, we would still choose the same range |
2008/8/26 05:51 |
| 7 | mxg330 | Why 50 hz? I don't think any explanation has ever been given about the choice of 50Hz as power tx freq. The above discussions above have been mere speculations only. The choice of freq seems merely historical. |
2008/8/26 05:51 |
| 8 | wy830115 | Why 50 hz? magnetra wrote: The above discussions above have been mere speculations only. The choice of freq seems merely historical. |
2008/8/26 05:51 |
| 9 | zunwang | Why 50 hz? Hello people, I don't believe 100Hz suffers from skin effect neither 200Hz. The problem is that, a diesel engine driving a generator at 1500rpm produces 50Hz, so for 100Hz 3000rpm are needed and for 200Hz, 6000rpm. That means, lower efficiency of engine and more wear of all parts. So at the time a decision was to be taken, the 50Hz was a good compromise. |
2008/8/26 05:51 |
| 10 | ct731 | Why 50 hz? Some historical aspects about mains frequency are here: http://en.wikipedia.org/wiki/Utility_frequency |
2008/8/26 05:51 |
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