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KYN28A-12 High Voltage Cabinet | 12kV Metal-Clad Switchgear from China Suppliers and 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
Air Quality
The ambient air should not be contaminated by corrosive and flammable gas such as water vapor
Vibration
Suitable for installation in places without frequent severe vibration
* Note: 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
Compartments
ABusbar room
BCircuit breaker trolley room
CCable room
DRelay instrument room
Components
1Outer shell
1.1Pressure relief device
1.2Control small cable tray
2Branch small busbar
3Busbar sleeve
4Main busbar
5Static contact device
6Static contact box
7Current transformer
8Ground switch
9Cable
10Lightning arrester
11Grounding main busbar
12Assembled & disassembled partition
13Partition (valve)
14Secondary plug
15Circuit breaker trolley
16Heater device
17Withdrawable horizontal partition
18Ground switch operating mechanism
19Bottom plate
Frequently Asked Questions
What is the protection rating of this switchgear?
The switchgear features a protection level of IP4X for the outer shell. When the doors of each compartment and the circuit breaker compartment are open, the protection level is IP2X.
What are the standard ambient temperature limits for normal service?
The normal ambient operating temperature ranges from a minimum of -10℃ to a maximum of +40℃.
Can this switchgear be installed against a wall?
Yes, because the switchgear is designed to be installed, debugged, and maintained from the front, it can be arranged back-to-back or installed directly against the wall to save space.
What material is used to construct the switch cabinet body?
The outer shell is constructed using imported aluminum zinc coated thin steel plates, processed by high-precision CNC machines and multiple folding processes.
What is the maximum altitude limit for standard operation?
The standard design is rated for altitudes ≤1000m. If your operational requirements exceed this limit, please contact us for customized consultation.
Is this switchgear resistant to seismic activity?
Yes, the structure is designed to safely withstand seismic intensities of up to 8 degrees.