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Pole Transformer problem

Discussion in 'Off-Topic Forum' started by DavyL200, May 28, 2018.

  1. DavyL200

    DavyL200 DI Forum Luminary ★ Global Mod ★ ★ Moderator ★ Highly Rated Poster Showcase Reviewer

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    I know a few on here are knowledgable on this stuff so thought i would ask.
    A new couple bought a house close by and there is a 10kva pole transformer which came with the house which is not working. The last tenant had the fuse changed a couple of times but it blew again.
    Noreco attended and just looked and said it was an old transformer and that was it.
    I knew the people who built this house and the transformer is less than 10yrs old and im pretty sure noreco has some sort of repair service for these things bit they just didnt seem interested.
    Question is who do they see about getting this fixed as sure it cant be that big of a prob.
    Its playing havoc with their electric at the moment due to very low power in the area.
     
  2. Jack Peterson

    Jack Peterson DI Forum Luminary Highly Rated Poster SC Connoisseur Veteran Air Force

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    Polaris! That is where Noreco buy then From
     
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  3. Show Pony

    Show Pony DI Forum Patron Highly Rated Poster Showcase Reviewer

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    Noreco has a transformer test shop and meter calibration centre in Munganoa (sp). They should be able to do a megger (voltage test) and a ratio test to confirm the true condition of the transformer.
    10 years is not very old for a transformer. If the transformer is actually defective, maybe Noreco can recommend a rewind shop.
     
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  4. Jack Peterson

    Jack Peterson DI Forum Luminary Highly Rated Poster SC Connoisseur Veteran Air Force

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    They do in deed but I am not sure if they will test private transformers especially older models but a call to customer services may help, whatever, it is going to cost as I said before I am convinced that Polaris should be consulted as this no doubt where it came from, I know on occasions that they will lend out Transformers if they undertake to help and do any work for the OP and his neighbours. One can only hope a solution can be found as I know that particular area has more than enough problems :thumbsup:
     
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  5. furriner

    furriner DI Forum Adept Restricted Account

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    So the people basically own their 10KVA transformer. It seems to be in bad shape. NORECO does not offer to fix, or give any credit if customer fixes.

    Customer might be able to purchase a used xfmr for P25K or so. In Siquijor, due to our heavy AC and other appliance loads we installed a separate 15kva but PROSIELCO allows us to rent the separate transformer for a small monthly fee instead of buying. The reason we chose to lease was for the reason this thread was started: When you lease, the power company owns the transformer and they must fix on their nickel when lightning strikes etc.. When you own, you fix, you pay and it may take you much longer to fix, keeping you offline longer.

    So, if I were those people I would ask NORECO II if I could lease a 10 or 15kva. The price is low, maybe P500 per month in Siquijor.

    If NORECO does not lease, then they tell them they want to be connected to the community hookup like any regular customer (3 or 4 neighbors sharing a 10kva or so transformer). I assume they cannot require customers to buy or fix a private transformer for their hookup. Then see if your loading is a problem. If not, or just minor low voltage issues, then leave well enough alone. Personally I like a heavy 15kva capacity and usually do not get close to using that much, however my supply voltage is very stable and it is there when we need it (powering all AC for fiesta etc.).


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  6. Jack Peterson

    Jack Peterson DI Forum Luminary Highly Rated Poster SC Connoisseur Veteran Air Force

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    The Question was asked and answered as best I and others could anything else should be taken up with either Noreco or the supplier
     
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  7. PatO

    PatO DI Forum Luminary Highly Rated Poster Showcase Reviewer Veteran Marines

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    Noreco repaired my transformer when it blew a couple years ago, can’t remember if I was billed for their servive.
     
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  8. Plainspoken

    Plainspoken DI Forum Adept

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    If anyone could tell me how to get NORECO to fix a problem I would really like to know how. As I write my lights are blinking on and off, as they have been for a month. NORECO came out and tested and said the transformer needed to be replaced, they own it, and that the voltage was 167 volts. They said they did not have a transformer and that a supervisor had to order one. Since then nothing has happened. I have called and they say "it has been reported", but it seems the report has not garnered a response as yet. Does anyone know if a c0mplaint to the Energy Regulatory Commission does any good?
     
  9. Rye83

    Rye83 with pastrami Admin Secured Account Highly Rated Poster SC Connoisseur Veteran Army

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  10. ShawnM

    ShawnM DI Forum Patron ★ No Ads ★ Highly Rated Poster Showcase Reviewer Blood Donor Veteran Air Force

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    If your voltage is only 167 volts, then most likely the transformer is overloaded with too many houses coming off of it and/or your service drop is too long and/or undersized. If you rent then you are basically stuck, if you own then it is worthwhile to get your own transformer.

    Lights blinking on and off could be the low voltage or a loose connection on your secondary somewhere. I'd ask the other neighbors that are coming off the transformer if they are having the same issue with blinking lights, if so then it is most likely the voltage, if not then I would look at connections.

    In Tanjay we've had very good experiences dealing with NORECO. We own the transformer but part of the purchase price was for NORECO to hang it and make the connections. We had a large lizard climb across the bushings which blew the fuse at the cut out. We did not have a spare fuse but they went ahead and replaced it for nothing and we just called them after we bought one to replace the one they changed out. We also had an issue with our lights blinking; I checked all our secondary connections and they were straight so I figured the issue was the connection at the transformer. NORECO came out and confirmed the secondary connection at the transformer was loose so they tightened it up. Some snacks for the workers and everyone was happy.

    For the original poster...from what I've heard, Polaris can test the transformer. Meg the windings as well as check the oil; if you have excessive moisture or other contaminants in the oil you lose the dielectric strength and that can cause the transformer to blow fuses, low oil level could also be a culprit. 10 years is not that old for a transformer, but again I have seen them go bad earlier than 10 years but not very often.

    Shawn
     
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