pplicable scope HD series and HS series open type knife switches and knife shaped conversion switches (hereinafter referred to as switches) are suitable for AC 50Hz, rated voltage up to AC400V, and rated current up to 3000A In a complete set of power distribution equipment, it is used for infrequent manual connection and disconnection of AC circuits or for isolation and shutdown The central handle type switch is mainly used for power stations and does not cut off circuits with current, serving as an isolation switch The central lever operated mechanism switch is mainly used in switchgear for front operation and rear maintenance, with the operating mechanism installed directly in the front The side front lever operated mechanism switch is mainly used for side front operation and front maintenance in switchgear. The operating mechanism can be installed on both sides of the cabinet The switch equipped with an arc extinguishing chamber can cut off the current load, while other series of knife switches are only used for isolationSwitch usage This product complies with the IEC60947-3GB14048.3 standard
Normal working and installation conditions The ambient air temperature shall not exceed 40 ℃ and not be lower than -5 ℃.The altitude of the installation site shall not exceed 2000m. Humidity: When the maximum temperature is 400C, the relative humidity of the air does not exceed 50%. Higher relative humidity can be allowed at lower temperatures, such as reaching 90% at 20 ℃. Measures should be taken to address occasional condensation cau sed by temperature changes. The pollution level of the surrounding environment is level 3. The switch should be installed in a place without significant shaking, impact vibration, and invasion of rain and snow. At the same time, the installation location should be free of exp losive hazardous media, and there should be no gas or dust in the media that can corrode metals and damage insulation.
