EL CID Core Testing

• The Electromegnetic Core Imperfection Detector or EL CID, was designed and used to detect insulation failures between laminations of stator cores in generators. We have been using this equipment to test large Generator and High Voltage motors of all sizes.
• It has the advantage that it does not require a large energy source to test the largest machines, it requires only 4% of a machines rated flux using a toroidal winding of a few turns. A 3kva supply at 110volt is sufficient to excite a machine of several hundred MVA.