📑 Basic Information
| Model NO. |
KYN28A-12 |
| Voltage Level |
Medium Voltage |
| Installation |
Removable |
| Structure |
Withdrawable |
| Rated Voltage |
3.6kv/7.2kv/12kv |
| Rated Frequency |
50Hz |
| Protection Class |
IP4X(Cabinet)/IP2X(with Door Open) |
| Ambient Air Temperature |
40°C Max, -10°C Min. |
| Altitude |
≤1000m |
| Compatible Circuit Breakers |
Vs1, Zn12V, Vd4 |
| Production Capacity |
100 Set/Sets Per Month |
📘 Product Description
KYN28A-12 Armoured Withdrawable AC Metal-Enclosed Switchgear
The KYN28A-12 armoured withdrawable AC metal-enclosed switchgear is used for receiving and distributing electrical energy in 3-12 kV power networks and for circuit control, protection, and monitoring. Various types of microprocessor-based integrated protective relays can be installed on the relay compartment panel, enabling intelligent system control with remote control, remote measurement, remote signaling, and remote adjustment functions. On-site network control is realized via a CAN bus with communication interfaces.
The switchgear is equipped with comprehensive interlocking functions to prevent incorrect operation, including the "five-prevention" interlocking system. It can be fitted with VS1 (ZN63) and ZN22B vacuum circuit breakers, as well as VD4 and 3AH vacuum circuit breakers and VC series vacuum contactors.
📸 Detailed Product View
⚡ Electrical Characteristics
| Project |
Unit |
Data |
| Rated Voltage |
kV |
3.6, 7.2, 12 |
| Rated Frequency |
Hz |
50 |
| Circuit Breaker Rated Current |
A |
630, 1250, 1600, 2000, 2500, 3150 |
| Rated Dynamic Stability Current (4s) |
kA |
16, 20, 25, 31.5, 40, 50 |
| Rated Short-circuit Making Current (Peak) |
kA |
40, 50, 63, 80, 100, 125 |
| 1-minute Power Frequency Withstand Voltage |
kV |
24, 32, 42 |
| Lightning Impulse Withstand Voltage |
kV |
40, 60, 75 |
| Protection Level |
- |
Enclosure IP4X, Compartments IP2X |
🚀 Product Advantages
High Flexibility & Easy Maintenance
The handcart design allows for isolation from the main circuit and control circuit, facilitating the extraction and replacement of high-voltage components. This significantly reduces power outage time.
Excellent Safety Protection
The fully enclosed metal structure isolates high-voltage live parts from the operating environment, effectively preventing accidental contact and intrusion of external pollutants.
Intelligent Control
Equipped with reliable mechanical and electrical interlocks to ensure correct operation. Integrated monitoring and protection functions achieve real-time system stability.
🌍 Operating Environmental Conditions
- Ambient Temperature: Upper limit +40ºC, lower limit -10ºC.
- Altitude: ≤1000m.
- Humidity: Daily average ≤95%; Monthly average ≤90%. Water vapor pressure: Daily average ≤2.2KPa.
- Hazard Levels: No fire, explosion hazards, or severe contamination sufficient to corrode metals or damage insulation.
- Mechanical Stress: No severe vibration or bumps; vertical tilt not exceeding 8°.
🏢 Professional Manufacturer Profile
Established in 2005, the enterprise is a national high-tech manufacturer specializing in intelligent power transmission, distribution, and industrial electrical control. The facility is certified with ISO 9001 Quality Management, ISO 14001 Environmental Management, and ISO 45001 Occupational Health and Safety systems.
Products are designed and manufactured in strict accordance with IEC (International Electrotechnical Commission) standards. Multiple product lines have obtained CCC, CQC, and CE certifications. The manufacturing infrastructure includes advanced flexible production lines with CNC turret punching, laser cutting, and busbar processing centers to ensure lean manufacturing and full-process quality control.
📦 Packaging & Shipping
Frequently Asked Questions
1 Are you a factory or a trading company?
We are a direct factory. We can guarantee that our prices are first-hand, highly competitive, and cost-effective.
2 What are your payment terms?
We accept T/T. Generally, it is 100% TT for smaller orders. For larger values, customers pay 30% in advance and 70% before shipment after final confirmation.
3 How long is the delivery time?
It depends on your order quantity, but normally the production cycle takes about 15-20 days.
4 What is your quality guarantee period?
Our quality guarantee period is 12 months. We hold ISO9001, ISO14001, and ISO45001 certifications, and our equipment strictly complies with international standards like IEC and ANSI.
5 Do you accept customized products?
Yes. You can provide detailed technical specifications, Single Line Diagrams (SLD), or relative drawings for our engineering team to review and provide a quotation.
6 What products do you mainly manufacture?
We specialize in medium and high voltage switchgear, low-voltage switchgear, and distribution panels such as ATS, GCS, GCK, and GGD for industrial and residential use.
Zago Electric
