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| Thread ID: 97475 | 2009-02-17 09:15:00 | What does "out of spec capacitor" mean? | 2sons (14628) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 748678 | 2009-02-23 00:18:00 | The technician who fixed the unit will probably not have written the phrases above, in my experience, to save precious technician time he/she will just write down a number corresponding to the type of fault found ie say 27 for "out of spec capacitor", then when the front office processes the paperwork they will look up in book the number 27 and write out the fault report and charge as you have seen, that is how we did it at Sedley Wells anyway, believe it comes from Philips Holland procedures. | zqwerty (97) | ||
| 748679 | 2009-02-23 03:59:00 | Can't follow that anything that is just a capacitor can actually change the timing of the phases or cycles (Hz) in your electricity . I can see taking the top off the PEP and reducing the EMF/REMF - we try to knock off the top 7 . 73% of the phase peaks here - it's just a heat generator and consumes and wastes energy . But I guess that your 220 VAC single-wired, the-ground-is-just-a-rod-in-the-dirt may have somewhat different operating circumstances . I could run a medium sized iron ore smelting plant on your ground eddy effect . Such a waste! :stare: Well Joe, it seems we've found the outer limits of your font of knowledge . In AC circuits the capacitor is used in a phase-shifting function . Keeping it very simple, current in an inductor (motor or transformer) is 90 degrees out of phase with the voltage, and current in a capacitor is also 90 degrees out but in the opposite direction (lagging/leading) . Use of a capacitor can be for enhanced starting torque initially, then for power factor correction to minimise the loss due to leading or lagging current vs voltage . BTW, the supply system you describe is the old single wire-earth return system used for remote areas where there might be just one house several kilometres from the source of supply . That system uses a very good ground as the return conductor and is quite efficient but tends to show voltage drop on heavy loads, especially in very dry weather . Our electrical system is in fact not all that dissimilar to yours, apart from the fact that we don't p around with low voltages which are inefficient and require heavier cables, and we are standardised on 230 volts . Our MEN system (multiple earthed neutral) is grounded at the supply point as well as having a safety ground on each installation, so if the supply neutral goes open-circuit, say because a visiting yank forgets which side of the road to drive on and bowls a power pole and drops a neutral, then the local ground at each installation prevents connected appliances from rising to the full supply voltage, which might be a tad hazardous . It is a very reliable and safe system, generally known as TCNS (or multiple earthed neutral) if you care to look it up, and you couldn't run a light bulb off our ground eddy effect, we don't have such a thing . Cheers Billy 8-{):thumbs: |
Billy T (70) | ||
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