Electric Motor Coil Data Sheets Stimple and Ward are always working to improve our quality and capabilities for our customers. We have created a wide range of electric coil data sheets to help you communicate your coil requirements to us. Data Sheet EM-PMI300-T310 Electric machine, permanent magnet internal. Can be also used as starter motor for the ICE. Maximum winding temperature 150°C. Electric Machine Parameter and Testing — Part 2. Measure and record A-B, B-C, C-A line-line resistances and inductances. Hipot and surge test the stator after varnish at 1800VAC, max current leakage 5mA Before and after varnish, perform corona test (partial discharge) with pulse up to but not exceeding 3000V.