KYN28A-12 High Voltage Switchgear - 12kV Metal-Clad, IEC Certified, China Suppliers & Factory for Reliable Energy Distribution
Model Meaning
Normal Service Condition
- Ambient temperature: maximum temperature +40℃, minimum temperature -10℃
- Ambient humidity: daily average doesn't exceed 95%, monthly average doesn't exceed 90%
- Altitude: ≤1000m
- Seismic intensity: The seismic intensity does not exceed 8 degrees
- The ambient air should not be contaminated by corrosive and flammable gas such as water vapor
- In places without frequent severe vibration
- When used beyond the normal service conditions specified as GB3906, the user shall negotiate with our company
Product Characteristics
The switchgear is designed according to the armored metal enclosed switchgear in GB3906-91. The overall structure consists of two main parts: cabinet body and mid-mounted withdrawable component (i.e. trolley). The cabinet is divided into four separate compartments, with protection level of IP4X for the outer shell. When the doors of each compartment and circuit breaker compartment are open, the protection level is IP2X. It's a power distribution device with various functional solutions such as overhead incoming and outgoing lines, cable incoming and outgoing lines and others after being arranged and combined. This switchgear can be installed, debugged and maintained from the front, so it can be arranged back-to-back into double arrangement and installed against the wall, improving the safety and flexibility of the switchgear and reducing the floor space.
The outer shell of the switchgear is made of imported aluminum zinc coated thin steel plate, processed by CNC machine and subjected to multiple folding processes. This not only makes the entire cabinet have high precision, strong corrosion and oxidation resistance, but also, due to the use of multi-layer folding technology, makes the cabinet lighter in weight, higher in mechanical strength, and more aesthetically pleasing than other similar cabinets. The cabinet adopts assembled structure, connected by riveted screws and high-strength bolts. This makes the processing and production cycle shorter, the parts more versatile, the floor space less, and production organization easier.
Technical Parameter
| Item | Unit / Argument | ||||
|---|---|---|---|---|---|
| Rated voltage | kV | 3.6 | 7.2 | 12 | |
| Rated frequency | Hz | 50 | |||
| Rated current of circuit breaker | A | 630、1250、1600、2000、2500、3150、4000 | |||
| Rated current of switchgear | A | 630、1250、1600、2000、2500、3150、4000 | |||
| Rated thermal stability current(4s) | kA | 16、20、25、31.5、40、50 | |||
| Rated dynamic stability current(peak value) | kA | 40、50、63、80、100、125 | |||
| Rated breaking current | kA | 16、20、25、31.5、40、50 | |||
| Rated short-circuit making current(peak value) | kA | 40、50、63、80、100、125 | |||
| Rated insulation level | 1min power frequency withstand voltage | kV | 24 | 32 | 42 |
| Lightning impulse withstand voltage | kV | 40 | 60 | 75 | |
| Protection level | IP4X/IP2X | ||||
Switch Cabinet Structure Diagram
- A. Busbar room
- B. Circuit breaker trolley room
- C. Cable room
- D. Relay instrument room
- 1.1. Pressure relief device
- 1.2. Control small cable tray
- 1. Outer shell
- 2. Branch small busbar
- 3. Busbar sleeve
- 4. Main busbar
- 5. Static contact device
- 6. Static contact box
- 7. Current transformer
- 8. Ground switch
- 9. Cable
- 10. Lightning arrester
- 11. Grounding main busbar
- 12. Assembled and disassembled partition
- 13. Partition (valve)
- 14. Secondary plug
- 15. Circuit breaker trolley
- 16. Heater device
- 17. Withdrawable horizontal partition
- 18. Ground switch operating mechanism
- 19. Bottom plate
Frequently Asked Questions (FAQ)
What are the normal ambient temperature limits for this switchgear?
The switchgear is designed to operate under normal service conditions with a maximum ambient temperature of +40℃ and a minimum ambient temperature of -10℃.
What is the protection level of the outer shell and compartments?
The overall protection level of the outer shell is IP4X. When the doors of each compartment and the circuit breaker compartment are open, the protection level is IP2X.
What materials and manufacturing processes are used for the cabinet shell?
The outer shell is made of imported aluminum zinc coated thin steel plate, processed by CNC machines and subjected to multi-layer folding technology. This ensures high precision, strong corrosion resistance, and high mechanical strength.
Can this switchgear be installed directly against a wall?
Yes. The switchgear can be installed, debugged, and maintained entirely from the front. This design allows it to be arranged back-to-back or installed against the wall to optimize floor space.
What are the rated voltage options available for this technical model?
Based on the technical parameters, the equipment supports rated voltages of 3.6 kV, 7.2 kV, and 12 kV at a rated frequency of 50 Hz.