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530kW motor checks? !!

Former Community Member
Former Community Member
Hello to all, and I do hope that people can advise me on this?


Firstly: what checks can I best do for a possible purchase of a single ABB - AMB 630 LC16 ABA C 530kW pump unit, which is unable to be properly tested (powered up) as the plant it was operating in has been decommissioned, and is currently being scrapped.


The unit appears to be mostly self contained, with a separate 'powercap' capacitor cabinet.

There are 8 in total, in various conditions and all look like this:
200fe3153df9ce950ab8d3220e14538c-huge-1.jpg
b9f52bfa5dd0afd26e92e2d1d4f97d2c-huge-2.jpg
9b08e6def31b626893d8d9e9b05b139f-huge-3.jpg
acf1cd9e473f756f328529e5cb2fc6d0-huge-4.jpg


Secondly: No switching gear is 'included', however I could always ask the company (who's pulling the site apart) if it's possible to obtain the original starter systems maybe???

But would this be a good idea, considering again it's in an unknown condition.


From the 8 available, I've selected 2 that appear to be the most suitable for hopefully reusing again (not bashed about, leaking oil etc) and thus generally look ok, so possibly from that can choose the final one.... but it would be great to know how best to maybe pick the best from any testing that could be done where they stand now, without any power.


Obviously with big industrial machine as this, it's not your average consumer second-hand electrical goods....

....that one just plugs in, and then hopes it works when power is applied!



(Thanks in advance to any replies)
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  • Former Community Member
    0 Former Community Member
    These big motors really do sound like a jet aircraft in operation!


    Here's another testing video just found

    It's odd as I thought most induction types had to be 'load' tested only, because running it unloaded ...was a nono?


    When at Tech college we did large 3 phase motor starting, and it had a huge friction belt setup because the lecturer said that without loading the motor could easily overheat due to high starting winding current, and even over-speed and then could possibly fly apart.


    I remember this weird but huge 'Frankenstein panel' where you had to get the phases inline and then after doing something else that I can't now recall ...pull over a huge switch that then set the motor into a running state from an initial starting mode?

    ...or something like that


    Anyway sadly can't go back and check because I did try to revisit the college about 5+ years or so ago (for old times sake as it was such a wonderful place that taught me so much over 4 years), but on exiting the main building to go into the next, the ENTIRE technical block (the machine shop, vehicle repair and entire indeed the whole electrical + engineering section) had been...

    demolished


    Nothing there anymore!

    I could not believe it


    Anyway, I'm thinking now motor testing is possibly best done by a specialist, certainly as the 11kv power requirements are not exactly easy to get hold of, and it's very likely the National Grid won't even allow an untested motor to be just 'connected up' anyway.

    If there are any UK based specialist motor testers who see or find this thread please get in touch and post a reply if you can take in a large motor for proper testing!

    I could check the pump out ok, but now don't really think motor testing is possibly something I really should even attempt myself, and it would be far better to send any pumpmotors I can obtain off to be properly tested.


    It may also upset the motor if the pump was actually disconnected creating a no load while trying to prevent the dry running of the impeller and/or seals?

    Not really sure.


    Just trying a motor and hoping for the best it seems can have major drawbacks......!

Reply
  • Former Community Member
    0 Former Community Member
    These big motors really do sound like a jet aircraft in operation!


    Here's another testing video just found

    It's odd as I thought most induction types had to be 'load' tested only, because running it unloaded ...was a nono?


    When at Tech college we did large 3 phase motor starting, and it had a huge friction belt setup because the lecturer said that without loading the motor could easily overheat due to high starting winding current, and even over-speed and then could possibly fly apart.


    I remember this weird but huge 'Frankenstein panel' where you had to get the phases inline and then after doing something else that I can't now recall ...pull over a huge switch that then set the motor into a running state from an initial starting mode?

    ...or something like that


    Anyway sadly can't go back and check because I did try to revisit the college about 5+ years or so ago (for old times sake as it was such a wonderful place that taught me so much over 4 years), but on exiting the main building to go into the next, the ENTIRE technical block (the machine shop, vehicle repair and entire indeed the whole electrical + engineering section) had been...

    demolished


    Nothing there anymore!

    I could not believe it


    Anyway, I'm thinking now motor testing is possibly best done by a specialist, certainly as the 11kv power requirements are not exactly easy to get hold of, and it's very likely the National Grid won't even allow an untested motor to be just 'connected up' anyway.

    If there are any UK based specialist motor testers who see or find this thread please get in touch and post a reply if you can take in a large motor for proper testing!

    I could check the pump out ok, but now don't really think motor testing is possibly something I really should even attempt myself, and it would be far better to send any pumpmotors I can obtain off to be properly tested.


    It may also upset the motor if the pump was actually disconnected creating a no load while trying to prevent the dry running of the impeller and/or seals?

    Not really sure.


    Just trying a motor and hoping for the best it seems can have major drawbacks......!

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