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Wiring a 3 phase nvr switch

I am trying to wire a 3 phase bench saw that has Klockner-Moeller PKZM 0-6 NVR switch. I am using a Transwave rotary 3 phase converter. The L1, L2 and L3 outputs form the converter are obvious and I think they go to the termnals labelled 2, 4 an 6 on the NVR switch. There appears to be a neutral terminal as well on the NVR switch and I'm wondering what should be connected there as it seems that it had bee used in the past. At the moment with just the L1, L2 and L3 connected the NVR does not seem to latch or indeed do anything. There is an additional output on the Transwave labelled 240. Is this a neutral that could be connected to teh neutral terminal of the NVR?

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  • glyndwr210 Sep 27, 2009

    Details on Transwace and Klockner Moeller sites insufficient. The NVR module is older than those that are now sold by the company.

  • glyndwr210 Sep 27, 2009

    I'm not clear on whether the line labelled 240 on the Transwave converter is indeed a neutral and nned advice form someone familiar with these converters.

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What is the voltage from the converter? Look at the 'contactor coil voltage' rating for the saw. What is the voltage for the coil? I'm trying to determine if you need a neutral or some other voltage other than the line to line voltage for the control circuit the saw needs to operate.

Posted on Sep 27, 2009

  • Craig Butler
    Craig Butler Sep 27, 2009

    I am familiar with converters. I need the line to line voltage? The coil voltage for the contactor?

  • Craig Butler
    Craig Butler Sep 27, 2009

    What is the voltage rating of the motor you're feeding? I am trying to help you, can you give me any more info that I'm asking for?

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Try hooking up the neutral, but then measure each leg before powering up saw so as not to have a voltage imbalance from the wild-phase due to the neutral now in circuit and ruin a motor, I would see if you can use an isolated voltage for the contactor from another breaker or power source depending what contactor voltage is required on the machinery

Posted on Sep 27, 2009

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  • Expert
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Hi There,
I'm not an electronics expert but I thought I might be able to find a manual for your switch or the 3 phase converter.

I found the Klockernermoeller web site that has a Toll free number and a live internet chat portal as well as a support email. Perhaps one of those contacts will be able to provide you with a wiring diagram or a description of what connections to use.
http://klocknermoeller.com/about-moeller.htm

I did a search for your converter and found this page
http://www.powercapacitors.co.uk/Power_Capacitors_Site/Converter_Downloads_files/MT%20OI.pdf

It describes the connections but I don't really understand it.
Again have a dig around the sight you might find some more useful information.

Sorry not a direct answer but if may help you on your way.

Doug.

Posted on Sep 26, 2009

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