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Thread: Coherent RTZ GROUNDING BOX

  1. #91
    Join Date: Jan 2009

    Location: Essex

    Posts: 31,853
    I'm openingabottleofwine.

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    Quote Originally Posted by Ali Tait View Post
    I am lol, that’s how I know. One of the engineers used to live near me, he says it’s always been high due to an old local trannie with a buggered tap changer. Won’t be changed until it reaches the end of its operational life.
    Ah - I hadn't realised the tap changer was a mechanical switch. I assumed it would be done by literally re-selecting the transformer tap by hand.
    Barry

  2. #92
    Join Date: Mar 2008

    Location: Galashiels

    Posts: 13,669
    I'm inthescottishmafia.

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    Yes it’s both usually, it’s common for them to go faulty though, for certain makes of transformer. We are talking about gear that’s often 40-50 years old though.

    The new 90MVA grid transformers we installed in the main substation have motorised tap changers that tap automatically depending on demand. One was found to be faulty during commissioning and had to be replaced.

    The old transformers had been in service since 1952 so I guess they’d had their money’s worth!
    “Music has always been a matter of energy to me, a question of fuel. Sentimental people call it inspiration, but what they really mean is fuel. I have always needed fuel. I am a serious consumer. On some nights I still believe that a car with the gas needle on empty can run about fifty more miles if you have the right music very loud on the radio”

    Hunter S Thompson

  3. #93
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 37,779
    I'm Martin.

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    Quote Originally Posted by Ali Tait View Post
    The old transformers had been in service since 1952 so I guess they’d had their money’s worth!
    Pah! I remember when if a transformer didn't last at least a hundred years we demanded our money back!
    Current Lash Up:

    TEAC VRDS 701T > Sony TAE1000ESD > Krell KSA50S > JM Labs Focal Electra 926.

  4. #94
    Join Date: Mar 2008

    Location: Galashiels

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    I'm inthescottishmafia.

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    LOL those days are gone, can’t see these new transformers lasting as long as the old ones.

    Things used to be built to a standard, now they’re built to a price.
    “Music has always been a matter of energy to me, a question of fuel. Sentimental people call it inspiration, but what they really mean is fuel. I have always needed fuel. I am a serious consumer. On some nights I still believe that a car with the gas needle on empty can run about fifty more miles if you have the right music very loud on the radio”

    Hunter S Thompson

  5. #95
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 99,005
    I'm Grant.

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    Quote Originally Posted by Ali Tait View Post
    LOL those days are gone, can’t see these new transformers lasting as long as the old ones.

    Things used to be built to a standard, now they’re built to a price.
    True. over in France on a dig, they pulled up a ww1 valve up and it was still as smooth operating as it was when made.
    Last edited by struth; 24-02-2019 at 11:37.
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  6. #96
    Join Date: Mar 2008

    Location: Galashiels

    Posts: 13,669
    I'm inthescottishmafia.

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    Aye, since it was all privatised, gotta keep the shareholders happy. Still, keeps me in work.
    “Music has always been a matter of energy to me, a question of fuel. Sentimental people call it inspiration, but what they really mean is fuel. I have always needed fuel. I am a serious consumer. On some nights I still believe that a car with the gas needle on empty can run about fifty more miles if you have the right music very loud on the radio”

    Hunter S Thompson

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