What type of enameled wire and insulation material is used for the compressor
Motor insulation class The insulation class is divided according to the permissible limit temperature of the insulation material used for the motor. There are Y, A, E, B, F, H, C and several other levels, the allowable limit temperature at all levels as shown in the table below. The so-called permissible limit temperature refers to the permissible maximum operating temperature of the motor insulation material, which reflects the heat resistance of the insulating material. Insulation material is divided into Y grade, A grade, grade E, grade B, grade F, grade H, grade C, permissible temperature (℃) 90,105,120,130,155,180, 180 ℃ or higher.
Closed compressor, or semi-enclosed compressor, motor stator coil, and refrigerant, frozen oil have direct contact, refrigerant, frozen oil will not damage the insulation of the coil, enameled wire insulation material problems The Small to the refrigerator, freezer compressor, air conditioning compressor, large to semi-closed, fully enclosed chillers, are related to the coil insulation material. To tell the truth I only demolished medium-sized compressors (semi-enclosed compressors for cold storage). Large semi-enclosed high-pressure refrigeration compressor (6KV, 10KV) I only seen in the manufacturer, did not break
Small and medium-sized closed, semi-enclosed refrigeration compressors are used for the specific enameled wire specifically (QF) series.
Enclosed wire and insulation materials for fully enclosed compressors: 1) Refrigerant R12, enameled wire with high strength polyester QZ, insulated with 6400 epoxy resin Insulation H34-4, Polyurethane film for insulating material Green paper (DMD ) Insulation paper; 2) refrigerant R22 and R502, with QF, QXY polyamide imide enameled wire, insulation treatment with EIU epoxy modified impregnated varnish, insulating material with polyimide film and poly Fiber composite foil, F-class insulation DMD insulation paper.
