YIMAI KYN28-12 Medium-Voltage Switchgear | 12kV Metal-Clad Withdrawable Vacuum Circuit Breaker Cabinet
The YIMAI KYN28-12 Medium-Voltage Switchgear is a high-performance, metal-clad power distribution solution engineered for 12kV high-voltage electrical systems. Sold by Shanghai YIMAI Electric (一迈电气), this withdrawable-type switchgear features a modular compartmentalized design, vacuum circuit breaker, and intelligent protection relays, ensuring safe and reliable power distribution, protection, and
- Information
Product Overview
The YIMAI KYN28-12 Medium-Voltage Switchgear is a professional-grade high-voltage power distribution system designed for 12kV electrical networks. Featuring a metal-clad, compartmentalized structure and withdrawable vacuum circuit breaker, this switchgear integrates circuit breakers, instrument transformers, and protection relays into a robust enclosure, providing reliable power distribution, short-circuit protection, and equipment control. With a rated voltage of 12kV and currents from 630A to 3150A, it is the ideal solution for power substations, industrial plants, and infrastructure projects.
Core Technical Advantages
-
Metal-Clad Compartmentalized Structure
- Adopts a fully metal-clad design, divided into independent busbar chamber, circuit breaker chamber, cable chamber, and instrument chamber, preventing fault propagation between different units.
- Each compartment is equipped with pressure relief valves, releasing internal pressure in the event of a fault to protect personnel safety.
- The enclosure is made of high-strength galvanized steel with IP4X protection rating, resistant to dust and mechanical impacts, suitable for indoor industrial environments.
-
Withdrawable Vacuum Circuit Breaker
- Equipped with a high-performance vacuum circuit breaker (VCB), featuring long electrical lifespan (≥10,000 operations) and excellent arc-extinguishing performance.
- The withdrawable design allows for quick removal and replacement of the circuit breaker using a dedicated cart, minimizing downtime during maintenance.
- Mechanical interlocks prevent incorrect operation, ensuring safe switching and isolation of high-voltage circuits.
-
Intelligent Protection & Monitoring
- Integrates high-performance protection relays and a digital HMI display, providing real-time monitoring of voltage, current, power factor, and fault status.
- Supports over-current, earth fault, and over-voltage protection, with fault self-diagnosis and remote communication (RS485/Modbus) capabilities.
- Enables unattended operation and integration with SCADA systems for smart grid management.
-
Modular & Scalable Design
- Modular cabinet design allows for parallel connection of multiple units to form a complete high-voltage distribution system.
- Flexible configuration supports custom combinations of circuit breakers, transformers, and protection devices to meet specific project requirements.
- Easy access to internal components simplifies installation and maintenance, reducing operational costs.
Technical Specifications (Typical Values)
| Parameter | 12kV-630A Model | 12kV-1250A Model | 12kV-3150A Model |
|---|---|---|---|
| Model | YIMAI-KYN28-630A | YIMAI-KYN28-1250A | YIMAI-KYN28-3150A |
| Type | Metal-Clad Withdrawable Medium-Voltage Switchgear | Metal-Clad Withdrawable Medium-Voltage Switchgear | Metal-Clad Withdrawable Medium-Voltage Switchgear |
| Rated Voltage | 12kV AC (Three-Phase) | 12kV AC (Three-Phase) | 12kV AC (Three-Phase) |
| Rated Current | 630A | 1250A | 3150A |
| Rated Short-Circuit Breaking Current | 20kA (3s) | 31.5kA (3s) | 40kA (3s) |
| Circuit Breaker Type | Vacuum Circuit Breaker (VCB) | Vacuum Circuit Breaker (VCB) | Vacuum Circuit Breaker (VCB) |
| Busbar Material | Copper (T2) | Copper (T2) | Copper (T2) |
| Protection Degree | IP4X (Indoor High-Voltage Use) | IP4X (Indoor High-Voltage Use) | IP4X (Indoor High-Voltage Use) |
| Number of Compartments | 4 (Busbar/Circuit Breaker/Cable/Instrument) | 4 (Busbar/Circuit Breaker/Cable/Instrument) | 4 (Busbar/Circuit Breaker/Cable/Instrument) |
| Cooling Method | Natural Convection | Natural Convection | Forced Air Cooling (Optional) |
| Dimensions (W×D×H) | 800×1500×2300mm | 1000×1500×2300mm | 1200×1800×2300mm |
| Net Weight | ~500kg | ~800kg | ~1200kg |
| Operating Environment | -10°C~40°C, 20~90%RH (Non-Condensing) | -10°C~40°C, 20~90%RH (Non-Condensing) | -10°C~40°C, 20~90%RH (Non-Condensing) |
| Compliance | GB/T 3906, IEC 62271, CE, ISO 9001 | GB/T 3906, IEC 62271, CE, ISO 9001 | GB/T 3906, IEC 62271, CE, ISO 9001 |
Target Applications
- Power Substations: Primary and secondary high-voltage power distribution for urban and rural power grids.
- Industrial Manufacturing: High-voltage power supply and protection for large motors, rolling mills, and heavy industrial machinery.
- Mining & Quarrying: Power distribution for mining equipment, crushers, and conveyor systems in remote areas.
- Oil & Gas Platforms: High-voltage power management for drilling rigs, pumps, and control systems.
- Infrastructure: Power supply for water treatment plants, transportation systems, and public facilities.
- Renewable Energy: Grid connection and protection for wind farms and solar power plants.
Why Choose YIMAI High-Voltage Switchgear (Shanghai YIMAI)?
YIMAI (上海一迈电气) is a leading manufacturer of high-voltage power distribution equipment, with decades of experience serving global heavy industry and infrastructure customers. Our KYN28-12 medium-voltage switchgear is rigorously tested to meet national and international standards (GB/T 3906, IEC 62271, CE, ISO), ensuring exceptional safety, reliability, and performance. Purchasing directly from Shanghai YIMAI on Taobao guarantees genuine products, local fast shipping, and professional after-sales support for large-scale high-voltage projects.
After-Sales Service & Support
- 3-year warranty for all high-voltage switchgear products.
- Lifetime technical support via Shanghai YIMAI Taobao store, including on-site installation, commissioning, and maintenance.
- Custom solution design for specific voltage, current, and functional requirements.
- Fast response to emergency repair requests, minimizing downtime for critical operations.
FAQ (Frequently Asked Questions)
Q1: What is the difference between KYN28-12 and other high-voltage switchgear types?
A: KYN28-12 is a metal-clad withdrawable switchgear, featuring a modular compartmentalized design and vacuum circuit breaker, making it suitable for 12kV indoor high-voltage applications requiring high reliability and easy maintenance. Other types like XGN2 are fixed-type switchgear, with lower integration but simpler structure.
Q2: Can this switchgear handle a 630A load continuously?
A: Yes, the 630A model is rated for 630A continuous operation, with a short-circuit breaking current of 20kA (3s), ensuring stable operation under normal and fault conditions.
Q3: What is the maximum short-circuit current it can break?
A: The 630A model can break 20kA (3s), the 1250A model can break 31.5kA (3s), and the 3150A model can break 40kA (3s), providing reliable protection against short-circuit faults.
Q4: Is the circuit breaker withdrawable?
A: Yes, the vacuum circuit breaker is fully withdrawable, allowing for quick removal and replacement using a dedicated cart, minimizing downtime during maintenance.
Q5: Does it support remote monitoring?
A: Yes, it supports RS485/Modbus communication, enabling remote monitoring and control via SCADA or smart grid management systems.
Q6: What is the lifespan of the vacuum circuit breaker?
A: The vacuum circuit breaker has an electrical lifespan of ≥10,000 operations, ensuring long-term reliable performance.
Q7: Is this switchgear suitable for outdoor installation?
A: The standard enclosure is IP4X (indoor use). For outdoor installation, we offer custom IP65 enclosures with weatherproofing and temperature control.
Q8: What is the warranty period?
A: All YIMAI high-voltage switchgear products come with a 3-year warranty, and Shanghai YIMAI provides lifetime technical support, including on-site maintenance and emergency repair services.
Product Overview
The YIMAI KYN28-12 Medium-Voltage Switchgear is a professional-grade high-voltage power distribution system designed for 12kV electrical networks. Featuring a metal-clad, compartmentalized structure and withdrawable vacuum circuit breaker, this switchgear integrates circuit breakers, instrument transformers, and protection relays into a robust enclosure, providing reliable power distribution, short-circuit protection, and equipment control. With a rated voltage of 12kV and currents from 630A to 3150A, it is the ideal solution for power substations, industrial plants, and infrastructure projects.
Core Technical Advantages
-
Metal-Clad Compartmentalized Structure
- Adopts a fully metal-clad design, divided into independent busbar chamber, circuit breaker chamber, cable chamber, and instrument chamber, preventing fault propagation between different units.
- Each compartment is equipped with pressure relief valves, releasing internal pressure in the event of a fault to protect personnel safety.
- The enclosure is made of high-strength galvanized steel with IP4X protection rating, resistant to dust and mechanical impacts, suitable for indoor industrial environments.
-
Withdrawable Vacuum Circuit Breaker
- Equipped with a high-performance vacuum circuit breaker (VCB), featuring long electrical lifespan (≥10,000 operations) and excellent arc-extinguishing performance.
- The withdrawable design allows for quick removal and replacement of the circuit breaker using a dedicated cart, minimizing downtime during maintenance.
- Mechanical interlocks prevent incorrect operation, ensuring safe switching and isolation of high-voltage circuits.
-
Intelligent Protection & Monitoring
- Integrates high-performance protection relays and a digital HMI display, providing real-time monitoring of voltage, current, power factor, and fault status.
- Supports over-current, earth fault, and over-voltage protection, with fault self-diagnosis and remote communication (RS485/Modbus) capabilities.
- Enables unattended operation and integration with SCADA systems for smart grid management.
-
Modular & Scalable Design
- Modular cabinet design allows for parallel connection of multiple units to form a complete high-voltage distribution system.
- Flexible configuration supports custom combinations of circuit breakers, transformers, and protection devices to meet specific project requirements.
- Easy access to internal components simplifies installation and maintenance, reducing operational costs.
Technical Specifications (Typical Values)
| Parameter | 12kV-630A Model | 12kV-1250A Model | 12kV-3150A Model |
|---|---|---|---|
| Model | YIMAI-KYN28-630A | YIMAI-KYN28-1250A | YIMAI-KYN28-3150A |
| Type | Metal-Clad Withdrawable Medium-Voltage Switchgear | Metal-Clad Withdrawable Medium-Voltage Switchgear | Metal-Clad Withdrawable Medium-Voltage Switchgear |
| Rated Voltage | 12kV AC (Three-Phase) | 12kV AC (Three-Phase) | 12kV AC (Three-Phase) |
| Rated Current | 630A | 1250A | 3150A |
| Rated Short-Circuit Breaking Current | 20kA (3s) | 31.5kA (3s) | 40kA (3s) |
| Circuit Breaker Type | Vacuum Circuit Breaker (VCB) | Vacuum Circuit Breaker (VCB) | Vacuum Circuit Breaker (VCB) |
| Busbar Material | Copper (T2) | Copper (T2) | Copper (T2) |
| Protection Degree | IP4X (Indoor High-Voltage Use) | IP4X (Indoor High-Voltage Use) | IP4X (Indoor High-Voltage Use) |
| Number of Compartments | 4 (Busbar/Circuit Breaker/Cable/Instrument) | 4 (Busbar/Circuit Breaker/Cable/Instrument) | 4 (Busbar/Circuit Breaker/Cable/Instrument) |
| Cooling Method | Natural Convection | Natural Convection | Forced Air Cooling (Optional) |
| Dimensions (W×D×H) | 800×1500×2300mm | 1000×1500×2300mm | 1200×1800×2300mm |
| Net Weight | ~500kg | ~800kg | ~1200kg |
| Operating Environment | -10°C~40°C, 20~90%RH (Non-Condensing) | -10°C~40°C, 20~90%RH (Non-Condensing) | -10°C~40°C, 20~90%RH (Non-Condensing) |
| Compliance | GB/T 3906, IEC 62271, CE, ISO 9001 | GB/T 3906, IEC 62271, CE, ISO 9001 | GB/T 3906, IEC 62271, CE, ISO 9001 |
Target Applications
- Power Substations: Primary and secondary high-voltage power distribution for urban and rural power grids.
- Industrial Manufacturing: High-voltage power supply and protection for large motors, rolling mills, and heavy industrial machinery.
- Mining & Quarrying: Power distribution for mining equipment, crushers, and conveyor systems in remote areas.
- Oil & Gas Platforms: High-voltage power management for drilling rigs, pumps, and control systems.
- Infrastructure: Power supply for water treatment plants, transportation systems, and public facilities.
- Renewable Energy: Grid connection and protection for wind farms and solar power plants.
Why Choose YIMAI High-Voltage Switchgear (Shanghai YIMAI)?
YIMAI (上海一迈电气) is a leading manufacturer of high-voltage power distribution equipment, with decades of experience serving global heavy industry and infrastructure customers. Our KYN28-12 medium-voltage switchgear is rigorously tested to meet national and international standards (GB/T 3906, IEC 62271, CE, ISO), ensuring exceptional safety, reliability, and performance. Purchasing directly from Shanghai YIMAI on Taobao guarantees genuine products, local fast shipping, and professional after-sales support for large-scale high-voltage projects.
After-Sales Service & Support
- 3-year warranty for all high-voltage switchgear products.
- Lifetime technical support via Shanghai YIMAI Taobao store, including on-site installation, commissioning, and maintenance.
- Custom solution design for specific voltage, current, and functional requirements.
- Fast response to emergency repair requests, minimizing downtime for critical operations.
FAQ (Frequently Asked Questions)
Q1: What is the difference between KYN28-12 and other high-voltage switchgear types?
A: KYN28-12 is a metal-clad withdrawable switchgear, featuring a modular compartmentalized design and vacuum circuit breaker, making it suitable for 12kV indoor high-voltage applications requiring high reliability and easy maintenance. Other types like XGN2 are fixed-type switchgear, with lower integration but simpler structure.
Q2: Can this switchgear handle a 630A load continuously?
A: Yes, the 630A model is rated for 630A continuous operation, with a short-circuit breaking current of 20kA (3s), ensuring stable operation under normal and fault conditions.
Q3: What is the maximum short-circuit current it can break?
A: The 630A model can break 20kA (3s), the 1250A model can break 31.5kA (3s), and the 3150A model can break 40kA (3s), providing reliable protection against short-circuit faults.
Q4: Is the circuit breaker withdrawable?
A: Yes, the vacuum circuit breaker is fully withdrawable, allowing for quick removal and replacement using a dedicated cart, minimizing downtime during maintenance.
Q5: Does it support remote monitoring?
A: Yes, it supports RS485/Modbus communication, enabling remote monitoring and control via SCADA or smart grid management systems.
Q6: What is the lifespan of the vacuum circuit breaker?
A: The vacuum circuit breaker has an electrical lifespan of ≥10,000 operations, ensuring long-term reliable performance.
Q7: Is this switchgear suitable for outdoor installation?
A: The standard enclosure is IP4X (indoor use). For outdoor installation, we offer custom IP65 enclosures with weatherproofing and temperature control.
Q8: What is the warranty period?
A: All YIMAI high-voltage switchgear products come with a 3-year warranty, and Shanghai YIMAI provides lifetime technical support, including on-site maintenance and emergency repair services.
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