Equipment Overview
The KYN28A-12 Armored Drawout AC Metal-Clad Switchgear is a switchgear system specifically designed for 3-10kV three-phase AC 50Hz single busbar systems. It is primarily used for receiving and distributing electrical energy, as well as controlling, protecting, and monitoring circuits.
Applicable Standards
This product strictly complies with the following standards:
• GB3906 "3-35kV AC Metal-Enclosed Switchgear"
• GB/T11022 "Common Technical Requirements for High-Voltage Switchgear and Control Equipment"
Model Meaning
• KYN28A-12(Z): Here, "K" represents metal-enclosed switchgear, "Y" represents withdrawable, "N28A" is the design serial number, '12' indicates a rated voltage of 12 kV, and "Z" may indicate a specific version or additional functionality.
Main Functions
• Receiving electrical energy: Receiving electrical energy from the power system.
• Power Distribution: Distributes electrical energy to various electrical devices.
• Circuit Control: Controls the on/off operation of circuits.
• Circuit Protection: Provides protection in case of circuit faults to prevent equipment damage.
• Circuit Monitoring: Monitors circuit status in real-time to ensure safe operation.
Technical Parameters
|
Rated voltage |
3.6kV, 7.2kV, 12kV |
|
Rated frequency |
50Hz |
|
Rated current of circuit breaker / switchgear system |
630A, 1250A, 1600A, 2000A, 2500A, 3150A |
|
Rated short-time withstand current (4s) |
16kA, 20kA, 25kA, 31.5kA, 40kA |
|
Rated peak withstand current |
40kA, 50kA, 63kA, 80kA, 100kA |
|
Rated short-circuit breaking / making current |
Breaking 16kA–40kA, Making 40kA–100kA |
|
1-minute power frequency withstand voltage |
Between poles / between pole and ground 24kV–42kV, Between breakers 24kV–48kV. |
|
Lightning impulse withstand voltage |
40kV-75kV between poles / between poles and ground, 46kV-85kV between breakers. |
|
Protection rating |
IP4X for the enclosure, IP2X between compartments / when the circuit breaker room door is open. |
Environmental Conditions
Temperature range
-15°C to +40°C, with an average daily temperature not exceeding 35°C.
Altitude limit
10kV system ≤1000m, 6kV system ≤3000m.
Humidity Requirements
Daily average relative humidity ≤95%, monthly average ≤90%; corresponding water vapor pressure daily average ≤2.2 kPa, monthly average ≤1.8kPa.
Environmental Requirements
No corrosive or flammable gases, no salt fog contamination, no severe contamination, and no severe vibration.
Structural Features
-
• All-metal construction: Modular assembly structure ensures the stability and durability of the equipment.
• Materials and processes: The cabinet body is made of imported aluminum-zinc-coated thin steel plates, processed by CNC machine tools, using multiple folding processes, and connected by rivet nuts and high-strength bolts, featuring high precision, corrosion resistance, light weight, high strength, and strong versatility.
Circuit Breaker Configuration
Can be equipped with the ZN63A-12 (VS1) series or imported VD4 series vacuum circuit breakers, offering wide applicability, high reliability, and maintenance-free operation.
01
Circuit breaker drawer design
Features working and testing positions, each with positioning and display devices to ensure safe and reliable operation.
02
High interchangeability
Drawers of the same specification can be freely interchanged, facilitating equipment maintenance and upgrades.
03
Cable compartment capacity
The cable compartment can accommodate up to 9 single-core cables, meeting various wiring requirements.
04
Interlocking devices
Equipped with reliable mechanical and electrical interlocking devices to meet the "five-prevention" requirements, ensuring safe operation.
05
High-voltage compartment safety
The high-voltage compartment is equipped with a pressure relief channel to effectively ensure the personal safety of operators.
06
Observation window design
The front door is fitted with an observation window for easy monitoring of the operational status of internal components.
07
Convenient maintenance
The equipment supports front-access maintenance and can be wall-mounted, saving space and facilitating operation.
08
Ordering Instructions
Main Circuit Information
• Specify the main circuit scheme number when placing an order.
• Provide a detailed main wiring diagram.
• Attach an arrangement diagram and floor plan.
• Auxiliary and Control Circuit Information.
• Submit auxiliary circuit and control circuit wiring diagrams.
• Include a terminal arrangement diagram for reference.
Cabinet Configuration Requirements
Cabinet Components
Clearly specify the model, specifications, and quantity of all components inside the cabinet to ensure accurate configuration.
Busbar Bridge Requirements
If busbar bridges are required (including between two rows of cabinets and between wall cabinets), provide the height dimensions across cabinets and to ground to ensure precise installation.
Cabinet colour
The cabinet colour must be customised according to the user's requirements. If no special requirements are specified, the company's standard colours will be used.
Operating environment
Special operating environment conditions, such as temperature, humidity, dust protection rating, etc., as well as other special requirements, must be specified to ensure the cabinet is suitable for the operating environment.
Note: If the project's operating conditions exceed the above specifications, please contact us for a customised solution. We are committed to providing the best solution tailored to your unique needs.
Product Images
Product Certificate
Customer Collaboration Case
In September 2023, Shangrao Yanshan Extreme Company commissioned our company to customise a batch of KYN28-12 high-voltage switchgear for its newly constructed power system. The project was completed from order confirmation to delivery in just 20 days, with on-site installation completed and accepted within five days, ensuring safe power supply. This fully demonstrates our company's rapid response and efficient execution capabilities in the field of high-voltage distribution equipment.
Jizhi Company highly praised our company's integrated 'design-production-installation' service, particularly commending the technical team's swift resolution of an on-site ground fault (restoring power within 2 hours), and suggested expanding future collaboration to projects at its other subsidiaries.
This project validated the reliability of the KYN28 series switchgear in industrial applications and laid the foundation for further collaboration. For further technical details or similar project solutions, please feel free to contact our technical support team at any time.
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