Скачать с ютуб Will It Run? 100 Year Old Three Phase AC Electric Motor 415v в хорошем качестве

Will It Run? 100 Year Old Three Phase AC Electric Motor 415v

I've acquired this lovely old three phase 415v AC motor made by Brook Motors in Huddersfield (England, UK). The previous owner said it was 1920's and although there is no date on it, I still believe him because not only are the threads all Whitworth, they are the older type with the wider nuts, which started to fall out of favour in manufacturing not long after the 1st world war. He said he had it for years and years but never tried to run it. Something to do with a plan to convert it into an alternator to run off a traction engine but he never got around to it. It's a three horse power unit, and clearly a four pole as it runs at 1400 rpm on the UK's 50hz supply. If it was two pole it would run at 2800 rpm. It's made of cast iron and is remarkably heavy for it's size, a testament to how well made these things were back in the day. This video shows it being wired up and energised for the first time in literally decades. It also includes some simple electrical-resistance tests to check that the three stator windings have continuity and that there is still strong insulation from them to ground/earth. These tests give an indication as to the electrical health of the unit. I would like to point out this isn't an instructional video on wiring up three phase motors. If it was, the terminals would be cleaned to bright, the cables would be the correct colours, and the neutral bus on the top much prettier. And I've have conducted a PAT test. It's just a lash-up rig to test it with a level of electrical safety that satisfies me as appropriate for my needs. Please don't replicate this test if you've no idea what you're doing...