What is the High Voltage Switchgear?
Definition of the High Voltage Switchgear
It has a voltage rating of 3.6-550KV.
Composition and Structure of the High Voltage Switchgear
The high voltage switchgear cabinet contains high-voltage circuit breaker, high-voltage isolation switch, high-voltage explosion-proof power distribution device, high-voltage operating mechanism, high-voltage automatic overlap and segment device, grounding switch, high-voltage load switch.
Overview of the High Voltage Switchgear
The main function of the high voltage switchgear is to cut off the circuit. The manufacturer shall assemble various circuit equipment in the metal cabinet according to the drawings.
Circuit equipment is mostly control appliances, protection appliances, measuring appliances, bus, load conductor and insulators. Metal cabinets are open and enclosed.
Service Conditions of the High Voltage Switchgear
⬤ Higher temperature can lead to reduced conductivity and increased resistance, which seriously affects the use of the high-voltage switchgear.
⬤ Secondly, too high temperature will lead to shortened life of insulation materials, reduced insulation strength, too low temperature will lead to insulation damage.
⬤ The altitude of high voltage switchgear is generally not more than 1000 meters
⬤ Environmental humidity: not more than 90%
⬤ Earthquake intensity: It can only be installed in areas of less than 8 degrees
⬤ Other conditions: installed in a safe place where there is no fire and explosion, chemical corrosion and violent vibration.
Application Field of the High Voltage Switchgear
High Voltage Switchgear appears in various places of our lives.
Enterprises and public institutions, schools and hospitals, residential communities, transportation hubs and other places will use high-voltage switchgear.
But the high-voltage switchgear is generally hidden in the substation.
So we can see it very rarely.
Technical theory of the High-Voltage Switchgear
⬤ Heat Heating Theory of Switching Electrical Appliances
⬤ Arc theory of switching electrical appliances
⬤ Electrical contact theory of switching electrical appliances
⬤ Theory of electromagnetic system for switching electrical appliances
⬤ Electrodynamic theory of switching electrical appliances
KEEP READING
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