KYN28-12 New type of armored withdrawable AC metal-enclosed switchgear

Overview

The KYN28-12(72) (G7S1 tvpe armored withdrawable Ac metal-encosed switchgear (hereinafter refered to as “switchgear”) is suitable for three.phase AC 50Hz power systems, used for receiving and distributing electrical energy, as well as controling, protecting, and monitoring circuits.

This product complies with the following standards: GB3906 “3~35kV AC Metal-Enclosed Switchgear,” GB/T11022 “Common Technical Requirementsior High-voltage Switchaear and Control Eouipment” and lEC60298 “AC Metal-Enclosed Switchgear and Control Eauipment with Rated voltage o1kV and Above.”

Model Meaning

Terms of Use

▪ Ambient air temperature: Maximum temperature +40’℃ , minimum temperature -15℃C :

▪ Relative humidity: Daly average relative humidity: ≤95%, daly average water vapor presure not exceding 2.2 kPa; monthly average relative humidity ≤ 90%; monthly average water vapor pressure not exceeding 1.8 kPa;

▪ Altitude: ≤ 1000 m;

▪ Earthquake intensity: Not exceeding 8 on the Richter scale;

▪ The surrounding air should not be significantly contaminated by corrosive or flammable gases, water vapor, et..

▪ No locations with severe vibration;

▪ When used under conditions exceeding the normal conditions specified in GB3906, the user and our company shall negotiate.

Main technical parameters

Item		Unit	Argument
Rated voltage		kV	3.6、7.2、12
Rated frequency		Hz	50
Circuit breaker rated current		A	630、1250、1600、2000、2500、3150
Rated current of switchgear		A	630、1250、1600、2000、2500、3150
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 short circuit closingcurrent(peak)		kA	50、63、80、100
Rated insulation level 1min power frequency withstand voltage	Between poles,poles to the ground	kV	24、32、42
	Between fractures	kV	24、32、42
Lightning impulse withstand voltage(peak)	Between poles,poles to the ground	KV	40、60、75
Lightning impulse withstand voltage(peak)	Between fractures	KV	46、70、85
Class of protection			The enclosureis IP4X,and the compartment and circuit breaker room doors are IP2X when opened.