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Thread: Hendey wiring

  1. #1
    Join Date
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    Default Hendey wiring

    Out of interest , a few pics of the Hendey wiring setup.

    A friend of mine who is an eletronics guru, has suggested the motor is of the type that changes from Delta to Star or vise versa as it is running .

    There are two devices in a box under the bed , one of which appears to be a change over relay , and down the end , on the leg , is what i think is an overload trip .

    I'm pretty sure the motor is original and 72 years OLD ! I am dubious about the insulation inside it

  2. #2
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    Default

    1st pic is the Star/ Delta contactors, 2nd is the run contactor and thermal overload and the 3rd pic is an isolator (on/off switch). Get an electrician to megga the wiring and motor before powering up. That will test the insulation of the motor windings and the control wiring.
    Built: a Bench,a Desk,an Archery Display,

    Those were the droids I was looking for.

  3. #3
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    Default more

    OK

    In the first pic above (HENDEY1) , both devices are relays

    behind the relay on the left is this , it is a manual switch ... four copper strips , go into ceramic contatcs ..does this lock it in either mode ..delta eg

  4. #4
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    Default

    Hi Mike,

    I think you might have to consider rewiring the machine, I wouldn't be tempted to power it up without megger testing.

    Old insulation can become crumbly and short out, can be dangerous.

    What details do you have on the motor?
    I can't remember if you have 3 phase power or not?

    Star delta starters are readily available if you wanted.

    Regards
    Ray

  5. #5
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    Default

    Not sure what it switches but it may isolate the control supply. Is that a transformer above it with a small glass fuse on top or is that just a catch?
    You wouldn't lock it in Star or Delta. It starts in star to reduce starting current then switches to Delta after a preset time period usually a couple of seconds. Long enough for it to run up to speed.
    A contactor is just a higher current rated relay with three or four poles to switch all three phases at once.
    Built: a Bench,a Desk,an Archery Display,

    Those were the droids I was looking for.

  6. #6
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    Default

    Hi NCarcher,

    Yes, looks like a transformer for the control voltage, I can't see any coil voltage ratings on the contactors, could also possibly be for a work light?

    Regards
    Ray

  7. #7
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    Default Ok

    I posted the pics out of interest .

    My plan is to strip the whole thing and rewire it .

    The motor in it is 3 HP .... I will buy a new ( or good used ) 3HP 240 / 415 3 phase motor and run the VFD .

    I don't like the thought of the 72 year old wiring inside that motor

    I spotted a megger at the hamfest ....

    MIKE

  8. #8
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    Default

    Quote Originally Posted by RayG View Post
    Hi NCarcher,

    Yes, looks like a transformer for the control voltage, I can't see any coil voltage ratings on the contactors, could also possibly be for a work light?


    Regards
    Ray
    Or a coolant pump?

    Quote Originally Posted by morrisman View Post
    I posted the pics out of interest .

    My plan is to strip the whole thing and rewire it .

    The motor in it is 3 HP .... I will buy a new ( or good used ) 3HP 240 / 415 3 phase motor and run the VFD .

    I don't like the thought of the 72 year old wiring inside that motor

    I spotted a megger at the hamfest ....

    MIKE
    Handy items to have. Grab one if it's cheap enough. I have an awesome bakelite wind up one. In new condition. I couldn't resist it.
    Built: a Bench,a Desk,an Archery Display,

    Those were the droids I was looking for.

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