Ways of decreasing the accident rate of electric motors of mining machines
Abstract
Analysis of materials on the accident rate shows that the cause of failure of electric motors of mining machines is mainly damage to the insulation of stator windings (80%), much less often - rotor cells (11%), even less often mechanical damage (9%). This allows us to outline the main ways to reduce the accident rate of electric motors of mining machines. Improvement of their operational reliability and increase of service life can be achieved by: 1) improving the thermal regime of electric motors by intensifying their cooling; 2) increasing the heat and moisture resistance of insulation; 3) improving protection; 4) creating “constant power” drive systems ...
None
References
- A discussion on the problem of reliability of electrical equipment. Elektrichestvo, No. 11, 1964.
- Kaymakov A. A. Characteristic damages of electrical equipment at the mines of Kuzbass. Proc. VostNII, vol. III, 1963.
- Kiklevich N. A., Kiklevich Yu. N. Modes of operation of executive bodies and drive of coal combines. Nedra, 1965.
- Molotkov R. V. Epoxy resins and their application in electrical industry. VNIIEM, 1964.
- Tishchenko N. A. The problem of reliability of electric motors. Elektrichestvo, No. 11-12, 1961.
- Chebotaev N. I. Change of Active Resistance of Isolation of Mine Electrical Equipment in the Process of Operation. Electrical safety at the enterprises of mining industry. Nedra, 1965.
- Shteding S.A. Causes of accidents of electric equipment of coal combines at the mines of Vorkutugol Combine. Mining Machines and Automation, No. 45, 1964.