AC Metal Switchgear Panel

KNY28A-12 high voltage AC Metal Switchgear Panel High-voltage switchgear: It is an electrical equipment based on circuit breakers.According to the requirements of the primary electrical wiring diagram, assemble the relevant high and low voltage appliances (including control appliances,...

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Description

KNY28A-12 high voltage AC Metal Switchgear Panel

High-voltage switchgear: It is an electrical equipment based on circuit breakers.According to the requirements of the primary electrical wiring diagram, assemble the relevant high and low voltage appliances (including control appliances, protection appliances, and measuring appliances), as well as bus bars, current-carrying conductors, insulators, etc., in a closed or open metal cabinet. As a device for receiving and distributing electrical energy in the power system.

Main technical parameters
Rated voltage	.....................................	kV	3.6,7.2,12
Rated frequency	.....................................	Hz	50
Rated current of circuit breaker	.....................................	A	630/4000
Rated current of switchgear	.....................................	A	630/4000
Rated short-time withstand current (4S)	.....................................	kA	20,25,31.5,40
Rated peak withstand current (peak)	.....................................	kA	50,63,80,100
Rated short-circuit breaking current	.....................................	kA	20,25,31.5,40
Rated insulation level 1min power frequency withstand voltage	Pole-to-pole, pole-to- ground	kV	24,32,42
	Between open contacts	kV	24,32,48
Lightning impulse withstand voltage (peak)	Pole-to-pole, pole-to- ground	kV	40,60,75
Lightning impulse withstand voltage (peak)	Between open contacts	kV	46,70,85
The shell is IP4X, and it is IP2X when the compartment door and circuit breaker chamber door are opened

Conditions of Use

1. Ambient temperature: The ambient air temperature does not exceed 40° (upper limit), -5° (lower limit) in general areas, and -15°C in severe cold areas.

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, an excessively high temperature will also cause internal stresses in the insulating parts in the cabinet, which will eventually lead to the destruction of the insulating parts.

2. Altitude: Generally no more than 1000 meters

3. Ambient humidity: The daily average value is not more than 95%, and the monthly average value is not more than 90%

4. Earthquake intensity: No more than 8

5. Other conditions: There is no place with fire, explosion hazard, serious pollution, chemical corrosion and severe vibration.

AC Metal Switchgear Panel