Sealed winding conformance test / submersion test
Next week I will have the opportunity to see a sealed winding conformance test (per NEMA MG-1 section 20.18) on one of our newly-rewound 13.2kv motors. The motor stator will be thoroughly wetted with water (including a wetting agent like detergent), and then will have ac voltage of 115% of line-to-line voltage applied line to ground applied. Pretty much an underwater mini hi-pot.
I haven't ever seen that before... it promises to be an interesting test.
Has anyone ever seen this done before? Any tips or suggestions?