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KYN28A-12 High Voltage Cabinet - 12kV Metal-Clad Switchgear from China Suppliers & Factory, IEC Certified
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
8 Ground switch
B Circuit breaker trolley room
9 Cable
C Cable room
10 Lightning arrester
D Relay instrument room
11 Grounding main busbar
1.1 Pressure relief device
12 Assembled and disassembled partition
1.2 Control small cable tray
13 Partition (valve)
1 Outer shell
14 Secondary plug
2 Branch small busbar
15 Circuit breaker trolley
3 Busbar sleeve
16 Heater device
4 Main busbar
17 Withdrawable horizontal partition
5 Static contact device
18 Ground switch operating mechanism
6 Static contact box
19 Bottom plate
7 Current transformer
Frequently Asked Questions (FAQ)
What are the normal temperature and humidity limits for this switchgear?
The switchgear operates under a maximum ambient temperature of +40℃ and a minimum temperature of -10℃. The daily average ambient humidity must not exceed 95%, and the monthly average must not exceed 90%.
What is the protection rating (IP code) of the switchgear cabinet?
The outer shell of the switchgear has a protection level of IP4X. When the doors of each individual compartment and the circuit breaker compartment are open, the protection level is IP2X.
What materials are used for the switchgear outer shell?
The outer shell is constructed from imported aluminum zinc coated thin steel plates. It is processed using high-precision CNC machines and multiple folding processes, providing strong corrosion resistance, oxidation resistance, and high mechanical strength.
Can the switchgear be installed against a wall?
Yes. The switchgear is designed to be installed, debugged, and maintained entirely from the front. This allows it to be arranged back-to-back in a double layout or installed directly against the wall to optimize and reduce floor space.
What are the available rated voltage options for this product?
This switchgear supports standard rated voltages of 3.6kV, 7.2kV, and up to 12kV, operating at a rated frequency of 50Hz.