1. Overview of KYN high-voltage switchgear
Switch cabinet (also known as a complete set of switches or a complete set of power distribution devices): It is an electrical equipment mainly based on circuit breakers; it refers to the manufacturer's installation of relevant high and low voltage electrical appliances (including control appliances, protection appliances, etc.) according to the requirements of the electrical primary main wiring diagram. Electrical appliances, measuring appliances) as well as busbars, current-carrying conductors, insulators, etc. are assembled in closed or open metal cabinets as a device for receiving and distributing electrical energy in the power system.
2. Normal use conditions
Ambient temperature: The ambient air temperature does not exceed 40℃ (upper limit), in general areas it is -5℃ (lower limit), and in severe cold areas it can be -15℃. If the ambient temperature is too high, the conductivity of the metal will decrease, the resistance will increase, and the surface oxidation will intensify; on the other hand, if the temperature is too high, the life of the insulating parts in the cabinet will be greatly shortened and the insulation strength will decrease. On the contrary, the ambient temperature If it is too low, internal stress will be generated in the insulating parts, which will eventually lead to the damage of the insulating parts.
Altitude: generally not more than 1,000 meters. For equipment installed at an altitude higher than 1,000 meters, the insulation level of the external insulation should be the required insulation withstand voltage multiplied by the correction factor Ka [ka=1÷(1.1-H× 10-4)] to decide. Since the air in high-altitude areas is thin, the external insulation of electrical appliances is prone to breakdown. Therefore, reinforced insulation electrical appliances are used to increase the air insulation distance, or to add insulation protection measures in the switch cabinet.
Environmental humidity: The daily average value is not greater than 95%, and the monthly average value is not greater than 90%.
Earthquake intensity: no more than 8 degrees.
Other conditions: There is no risk of fire, explosion, serious pollution, chemical corrosion and severe vibration.