12kV Indoor Armored AC Metal Enclosed Switchgear

Overview 

The KYN28 medium voltage switchgear is a sophisticated indoor metal-clad withdrawable device, meticulously designed for 3.6kV to 12kV three-phase AC systems operating at 50/60Hz. This switchgear is integral to power transmission and distribution networks and is extensively utilized in the electrical infrastructure of industrial and mining enterprises, as well as in power plants and substations. It is engineered for both single bus and single bus sectionalized configurations, offering unparalleled control, protection, and monitoring capabilities for medium voltage power systems.

---

Environmental Conditions

• Ambient air temperature: maximum temperature +40℃, minimum temperature -15℃;

• Relative humidity: daily average relative humidity: ≤ 95%, daily average water vapor pressure does not exceed 2.2KPa; Monthly average relative humidity ≤ 90%; The average monthly steam pressure does not exceed 1.8KPa;

• Altitude: ≤ 1000m;

• Earthquake intensity: not more than 8 magnitude;

• The surrounding air should be free from corrosive or flammable gases, water vapor and other obvious pollution;

• No severe vibration site;

---

Product Features

• Enhanced Safety Measures: Complying with international standards such as  IEC60298 , the KYN28 switchgear incorporates advanced safety features. These include mechanisms to prevent accidental operations such as the misoperation of the circuit breaker's handcart under load, inadvertent closing or opening of the circuit breaker, engagement of the circuit breaker with the grounding switch activated, unauthorized access to energized compartments, and incorrect operation of the energized grounding switch.

• Broad Compatibility: This switchgear is designed to be compatible with a wide range of vacuum circuit breakers, from domestic models like the VCA and VS1 to globally recognized brands such as ABB's VD4-I2 and Schneider's EV 12S. This versatility ensures it can meet the diverse needs of customers across various sectors.

• Intelligent Control: Equipped to host several microprocessor-based relay protection devices, the KYN28 enables seamless integration with fieldbus control networks through the CAN communication interface. This facilitates sophisticated control functions, including remote control, telemetry, remote signaling, and remote adjustments, streamlining system management and enhancing operational efficiency.

• Compact Design and Easy Maintenance: Constructed from premium materials and utilizing state-of-the-art CNC machining, the switchgear boasts a compact and robust design that simplifies installation and maintenance. Its handcart components are modular, allowing for easy replacements and upgrades which contribute to lower maintenance costs.

• Superior Isolation and Cooling: Featuring a design that isolates different functional compartments, the switchgear ensures enhanced safety and reliability. It is also equipped with dedicated pressure relief channels and an effective cooling system, guaranteeing consistent performance even under prolonged operational periods.

  
  

Technical Data

Item		Unit	Data
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 closing current (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
	Between fractures	kV	46、70、85
Class of protection			The enclosure is IP4X, and the compartment and circuit breaker room doors are IP2X when opened.

Note: Customizable products (Rated Voltage:24kV), please consult our company for detailed data

---

Schematic diagram of structure

.

Mounting size (mm)

					mm
Height B					2300(2200)
Width A	Rated current up to 1250A				800
	Rated current 1600A and above  (altitude 4000m rated current 1250A)				1000
Depth C	Cable inlet and outlet				1500
	Overhead inlet and outlet line				166
					mm
Cabinet width A	Cabinet depth B	L1	L2	L3	L4
800	1500 Cable	530	630	150	490
	1660 Aerial	530	630	310	650
1000	1500 Cable	730	830	150	490
	1660 Aerial	730	830	310	650

---

Main circuit scheme diagram

{"json":"[{\"downloadUrl\":\"//rororwxhikjjlp5q-static.micyjz.com/KYN28+Armored+AC+Metal+Enclosed+Switchgear+Catalog-V1.0-+EN-aidlnBpjKmlllSRlkkjqojniq.pdf?dp=1\",\"encodeFileId\":\"lvfpAQUKyckZ\",\"fileId\":6008754,\"fileName\":\"KYN28 Armored AC Metal Enclosed Switchgear Catalog-V1.0- EN.pdf\",\"fileType\":\"pdf\",\"photoUrlNormal\":\"//jprorwxhikjjlp5q-static.micyjz.com/static/assets/widget/images/downloadNew/pdf.svg\",\"pname\":\"KYN28 Armored AC Metal Enclosed Switchgear Catalog-V1.0- EN.pdf\",\"name\":\"KYN28 Armored AC Metal Enclosed Switchgear Catalog-V1.0- EN.pdf\"}]","type":"1"}