The design of H level thermal-conductivity composite insulation structure for explosion-proof motor with high efficiency and low voltage

When an electric motor is running for a long time, its winding temperature increases due to ohmic heating in the copper wire. Because the winding is covered with insulating paint, heat dissipation is difficult and this can reduce the service life of electric motor. In view of the difficult problem of heat dissipation with insulation structure, this paper developed a new type of high thermal insulation structure (H level) to reduce the motor temperature rising, and had a high thermal conductive insulation test and calculation analysis of efficiency for YB2132-5.5kW-4P electric motor. The results showed that the H level insulation structure could make the electric motor temperature reduced significantly, and it can also achieve the purpose of improving the electric motor efficiency.