Frequency converter protection device

• Main Authors: SHAN XIAOCHEN, LI HONGHUA
• Format: Patent
• Language: Chinese; English
• Published: 18.10.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; BLASTING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; LIGHTING; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; PRINTED CIRCUITS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a frequency converter protection device. The frequency converter comprises a frequency converter body, the frequency converter protection device further comprises a bottomplate, a supporting plate and a housing. Four guide columns distributed in an array mode are welded and fixed to the upper end face of the bottom plate. The upper end of each guide column movably penetrates through the supporting plate and then is in threaded connection with a nut. A first spring sleeves the outer part of the guide column between each nut and the support plate; a second spring sleeves the outer part of each guide column between the support plate and the bottom plate, the frequency converter body is fixed on the upper end surface of the support plate, the housing covers the outer parts of the frequency converter body and the support plate, the lower end of the housing is fixed with the support plate, and gaps are reserved between the inner wall of the housing and the support plate and between the i