Overview
KYN28A-12(Z) Armored Removable AC Metal-Enclosed Switchgear(hereinafter referred to as "switchgear") is designed for 3–10kV three-phase AC 50Hz single busbar systems. It is mainly used for receiving and distributing electrical energy, as well as controlling, protecting, and monitoring electrical circuits.
This equipment is a highly reliable three phase switchgear solution widely applied in modern power distribution systems. It complies with international standards such as GB3906 (3–35kV AC Metal-Enclosed Switchgear) and GB/T11022 (Common Technical Requirements for High-Voltage Switchgear and Controlgear).
Environmental Adaptability
- Ambient temperature: -15°C to +40°C (daily average ≤ 35°C)
- Altitude:
≤1000m for 10kV systems
≤3000m for 6kV systems
- Humidity:
Daily average RH ≤ 95%, vapor pressure ≤ 2.2kPa
Monthly average RH ≤ 90%, vapor pressure ≤ 1.8kPa
- Seismic intensity: ≤ Grade 8
- No exposure to corrosive gases, flammable gases, steam, or salt mist
- No severe pollution or frequent vibration
Custom conditions can be negotiated if requirements exceed the above.
Technical Specifications
| Item | Unit | Data |
|---|---|---|
| Rated Voltage | kV | 3.6 / 7.2 / 12 |
| Rated Frequency | Hz | 50 |
| Breaker Rated Current | A | 630–3150 |
| Switchgear Rated Current | A | 630–3150 |
| Short-Time Withstand Current (4s) | kA | 16–40 |
| Peak Withstand Current | kA | 40–100 |
| Short-Circuit Breaking Current | kA | 16–40 |
| Short-Circuit Making Current | kA | 40–100 |
| Power Frequency Withstand Voltage | kV | 24 / 32 / 42 |
| Lightning Impulse Voltage | kV | 40 / 60 / 75 |
| Protection Degree | - | IP4X (IP2X when door open) |
Core advantages of the product
1. Military-Grade Durability
Manufactured with modular all-metal structure using high-quality aluminum-zinc coated steel plates. CNC machining ensures high precision, corrosion resistance, and long service life even in harsh environments.
2. Premium Component Compatibility
Compatible with domestic ZN63A-12 (VS1) or ABB VD4 vacuum circuit breakers, ensuring high reliability and maintenance-free operation for three phase switchgear systems.
3. Intelligent Drawout Design
Clear working/test positions with interlocking system. High interchangeability improves operational safety and maintenance efficiency.
4. Flexible Cable Configuration
Spacious cable compartment supports up to 9 single-core cables, meeting high-density power distribution needs.
5. Five-Prevention Interlocking
Advanced mechanical and electrical interlocking system prevents misoperation and ensures safety.
6. Safety Pressure Relief
Built-in pressure relief channels protect operators during internal arc faults.
7. Front Maintenance Design
Fully front-accessible design allows wall installation, saving space and improving layout efficiency.
Product Structure Diagram
OCustomization and Selection Guide
When placing an order, please provide the following information to help us offer the most suitable product configuration:
Main circuit scheme number, main wiring system diagram, layout diagram, floor plan.
Schematic diagram for auxiliary and control circuits, terminal block layout.
Model, specification, and quantity of components inside the cubicle.
Requirement for surge arresters (e.g., if equipped with circuit breaker truck).
Enclosure color requirement (if not specified, our standard color will be applied).
Applications
This KYN28A-12(Z) Armored Removable AC Metal-Enclosed Switchgear is widely used in:
- Power plants & substations
- Industrial manufacturing and mining
- Data centers & hospitals
- Commercial buildings & infrastructure
- Renewable energy systems (solar, wind, water treatment)
Our Company
Zhejiang Gangheng Electric Co., Ltd., established in 2004, is a high-tech enterprise specializing in R&D, manufacturing, and sales of high and low voltage electrical equipment including switchgear and transformers.
The company is equipped with advanced CNC machines, laser cutting systems, and complete testing facilities. Products are certified with ISO9001, ISO14001, and OHSAS18001, and exported to multiple countries.
We are committed to delivering high-quality, cost-effective three phase switchgear solutions with full lifecycle service support.
FAQ
FAQ
Q: 1. What is KYN28A-12(Z) switchgear used for?
A: KYN28A-12(Z) switchgear is used for receiving and distributing electrical energy in 3–10kV systems. It also provides control, protection, and monitoring functions, making it a key component in three phase switchgear systems.
Q: 2. What type of circuit breakers are compatible?
A: It is compatible with ZN63A-12 (VS1) vacuum circuit breakers and ABB VD4 breakers, ensuring high reliability and maintenance-free performance.
Q: 3. What are the main advantages of this switchgear?
A: Key advantages include modular metal-enclosed design, high safety interlocking system, strong environmental adaptability, and easy front maintenance. It is ideal for modern three phase switchgear applications.
Q: 4. Can it be customized for specific projects?
A: Yes, the switchgear can be customized based on circuit diagrams, component specifications, installation layout, and special environmental conditions.
Q: 5. Where is this switchgear commonly installed?
A: It is widely installed in power plants, substations, industrial facilities, data centers, hospitals, and renewable energy projects.
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