Solid insulation cabinet ly2015.3 before use, and for personal safety equipment must be carried out following an inspection, check the main circuit and the ground circuit is connected correctly. 2. Check the mechanical interlock is correct and reliable. 3. Check the solid insulation cabinet load switch and earthing switch operation is flexible, correct. 4. Check the high voltage cable connection is correct and reliable. Note: If the solid insulation cabinet is faulty, do not attempt to use the drilling machine, cutting machine, or other tool to open repair, these operations can only be undertaken by a professional company personnel. Company Website: http: //www.jilinshengye.com