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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: RE: New power company transformer posted by fxbill on November 12, 2008 at 17:45:22:
fxbill,I just don't believe that the poster referred to what you describe.I understand completely what it is that you refer to.If a transformer goes bad some night,or such, and there are breakers on the secondary between 2 transformer feeds,and the load is such that a couple, or a few more houses can be handled by an existing transformer on the same lateral (primary pulloff),then a crew can and will jumper across the breakers as a temporary measure to restore service to those services fed by the bad transformer (tx.)in order to avoid replacing the bad tx., that night ,usually if the tx. is in the 'rear of',inaccessible, in other words.However that condition is only temporary,and should not be employed for extended period of time.If your voltage is reading 105,you should call the power company asap.Perhaps a voltage regulator in the substation,or on the line,depending on how far you are from the substation regulators is 'stuck'.Step regulators occasionally malfunction and 'stick' on a particular tap.They move up and down throughout the day as load demand merits.I occasionally have to answer calls which require that I have to go to the substation and check the 'regs'.The distribution dispatcher has 'scada' telemetry which indicates what the 'regs' are putting out.Trust me,105 volts is below the allowable margin of variance a power company is allowed to permit.If it is not regulator malfunction,then your power company needs to immediately address the situation,which would require more capacitor banks,etcetera,installed.I cannot feel that the company would not be on top of the load situation in your area,but anything is possible.Also,regarding your specific case,for example a 25 kva tx. would typically feed 4 normal sized home services.A 37.5 kva tx. would feed perhaps 6 or maybe 7 homes of 'normal' size.I refer to average neighborhood houses,such as 4bdr/2bth type residences.A 50kva tx. might feed 8 or nine such residences.This is of course generally speaking.And,yes ,there is 'line loss', depending on how far a load might be along a secondary buss from the tx.This is calculated by the engineering department of a power company,and should be implemented accordingly.Sorry if I bored you with the obvious.Cheers.....S/V.
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Follow Ups
- RE: New power company transformer - strata-various 17:31:55 11/13/08 (0)
- RE: New power company transformer - strata-various 18:19:13 11/13/08 (0)
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