Applicable Scope
HD series, HS series open-type knife switch and knife-shaped transfer switch (hereinafter referred to as switch) are suitable for the complete set of power distribution equipment with AC 50Hz, rated voltage up to 380V, DC up to 220V, rated current up to 3000A, as an infrequent manual connection It can be used for passing and breaking AC and DC circuits or as an isolating switch. in:
1.1 The central handle switch is mainly used in the power station, it does not cut off the circuit with current, and it is used as an isolating switch.
1.2 Side front lever operating mechanism switches are mainly used in switch cabinets with front operation and front maintenance, and the operating mechanism can be installed on both sides of the cabinet.
1.3 The central front lever operating mechanism switch is mainly used in the switchgear with front operation and rear maintenance, and the operating mechanism is installed in the front.
1.4 The side-operated handle switch is mainly used in the power box.
1.5 The switch equipped with an arc extinguishing chamber can cut off the appropriate current load, and other series of knife switches are only used as isolating switches.
This product complies with IEC60947-3 GB14048.3 standard.
Working And Installation Conditions
1. The ambient air temperature is not higher than +40°C and not lower than -5°C.
2. The altitude of the installation site shall not exceed 2000m.
3. Humidity. When the highest temperature is +40°C, the relative humidity of the air should not exceed 50%. Higher relative humidity is allowed at lower temperatures, for example, 90% at 20°C. Special measures should be taken for occasional condensation due to temperature changes.
4. The pollution level of the surrounding environment is level 3.
5. The switch should be installed in a place where there is no significant shaking, shock vibration, and no rain or snow; at the same time, the installation site should have no explosive medium, and there should be no gas and dust in the medium that can corrode metal and damage insulation.
The Main Parameters
1. Rated working voltage and current 380V, DC 220V.
