Address
304 North Cardinal St.
Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
KYN28A-12 Armored Removable Metal- Enclosed Switchgear 12KV Medium Voltage Switchgear High Safety Reliable Distribution Solution
KYN28A-12 is an indoor AC armored withdrawable metal-enclosed switchgear, designed for 3-phase AC 12kV, 50Hz power systems. It is used for receiving, distributing power, and controlling, protecting & monitoring circuits.
Compliant with GB 3906, IEC 298 and other international standards, it is widely applied in power plants, substations, industrial enterprises, commercial buildings and other medium voltage distribution scenarios.
Model Meaning
K Y N 28A – 12 / □ □
- K: Metal-enclosed Armored Type
- Y: Removable (Trolley Center-mounted)
- N: Indoor Installation
- 28A: Design Serial Number
- 12: Rated Voltage (kV)
- □: Primary Circuit Scheme
- □: Environmental Code (TH/Tropical Humid, TA/Tropical Arid, G/High Altitude)
Key Structural Features
- Modular Compartment Design: 4 independent compartments (breaker, busbar, cable, relay room) to prevent fault spread
- High-Strength Cabinet: Aluminized zinc steel plate with CNC processing, anti-corrosion, high rigidity and beautiful appearance
- Interchangeable Trolley: Center-mounted withdrawable trolley with reliable interlock, easy for operation and maintenance
- Complete “Five Anti” Interlock: Fully meets safety requirements, prevents misoperation effectively
- Pressure Relief Device: Automatic pressure release in case of internal arc fault, ensures operator safety
- Large Cable Room: Center-mounted design provides enough space for multi-cable connection and maintenance
Main Technical Parameters
| Item | Unit | Specification |
|---|---|---|
| Rated Voltage | kV | 3.6, 7.2, 12 |
| Rated Frequency | Hz | 50 |
| Rated Current (Circuit Breaker / Switchgear) | A | 630, 1250, 1600, 2000, 2500, 3150 |
| Rated Short-Time Withstand Current (4s) | kA | 16, 20, 25, 31.5, 40, 50 |
| Rated Peak Withstand Current | kA | 40, 50, 63, 80, 100, 125 |
| Rated Short-Circuit Breaking Current | kA | 16, 20, 25, 31.5, 40, 50 |
| Power Frequency Withstand Voltage (1min) | kV | 24, 32, 42 |
| Lightning Impulse Withstand Voltage | kV | 40, 60, 75 |
| Protection Degree | – | IP4X (Enclosure), IP2X (Door Open) |
Normal Operating Conditions
- Ambient temperature: -10°C ~ +40°C, no severe vibration or shock
- Relative humidity: Daily average ≤95%, monthly average ≤90%
- Altitude: ≤1000m (above 1000m, derating required)
- No corrosive, flammable gas or obvious pollution in the air
- Seismic intensity: ≤8 degrees
Overall Dimensions (mm)
| Dimension | Configuration | Size |
|---|---|---|
| Height (B) | Standard | 2370 |
| Width (A) | Branch bus ≤1250A, 40kA | 800 |
| Branch bus ≥1600A | 1000 | |
| Depth (C) | Cable In/Out | 1500 |
| Overhead In/Out | 1660 |
Application Scenarios
KYN28A-12 switchgear is widely used in power substations, power plants, industrial factories, commercial buildings, residential areas, data centers and other 12kV medium voltage power distribution systems, providing reliable power control and protection.
We'd like to work with you！
Send us a message if you have any questions or request a quote.Our experts will give you a reply within 24 hours
and help youselect the right valve you want.