Your Professional Medium Voltage Switchgear Supplier
Perfect(Jiangsu) Electrical Group Co., Ltd. is located in Zhenjiang New District, Jiangsu Province. It is a National High-Tech Enterprise, a Jiangsu Province Key Software Enterprise, a Jiangsu Province Private Technology Enterprise, an AAA Credit Enterprise, and a Director Unit of the China Power Supply Association. The company is committed to providing smart power system solutions for large-scale industrial customers in sectors such as power generation, transportation, and new energy.
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![KYN28A-12 Medium Voltage Switchgear]()
KYN28A-12 Medium Voltage SwitchgearRated Current: 600-5000A. Rated Voltage: 10-12KV. Certificate: CCC CE ISO. Protection Level: IP42. Rated frequency: 50Hz--60Hz. Conductor: Copper or Aluminum. Application: Power Distribution
Why choose us
Sales Market
Our products are exported to Europe, the Americas, the Middle East, Southeast Asia, and other regions, where they have received widespread recognition and praise from customers.
Certifications
We have obtained ISO 9001 Quality Management System certification, ISO 14001 Environmental Management System certification, ISO 27001 Information Security Management System certification, and OHSAS 18001 Occupational Health and Safety Management System certification. Our products have passed multiple standards certifications, including GB, IEC, and CE. The company holds numerous invention patents, more than 60 utility model patents, and over 10 software copyrights.
Service
We provide on-site installation, commissioning, and maintenance services for busway systems, switchgear, and transformers, ensuring stable and reliable operation of each system. Our professional teams are experienced in handling complex site conditions and provide comprehensive support throughout the full life cycle of customers’ power distribution equipment.
Technical Data
|
Name |
Unit |
Data |
|
Rated voltage |
KV |
3.6 7.2 12 |
|
Rated power-frequency withstand voltage(1 min) |
KV |
18 23 42 |
|
Rated lightning impulse withstand voltage |
KV |
40 60 75 |
|
Rated frequency |
Hz |
50 |
|
Main busbar rated current |
A |
2500*, 3150*, 4000* |
|
Branchal busbar rated current |
A |
2500*, 3150*, 4000* |
|
Rated short-time withstand current(rms), 4S |
KA |
16, 20, 25, 31.5, 40*, 50* |
|
Rated peak withstand current |
KA |
40, 50, 63, 80, 100*, 125* |
|
Enclosure protection level |
IP4X |
|
|
Height |
2300mm |
|
|
Width |
Rated current down to 1600A |
800.(650*)mm |
|
Rated current up to 2000A |
1000mm |
|
|
Depth |
Front maintenance Double-face maintenance |
1350mm 1500/1660mm |
|
Weight |
800~ 1200kg |
|
SF6 insulation, vacuum arc extinction, micro-positive pressure 0.02 MPa.
Superior insulation performance, meeting insulation performance requirements at zero gauge pressure, with the entire unit's partial discharge less than 10 pC.
Compact and reliable structure, saving 60% of space compared to switch cabinets.
Special heat dissipation structure, meeting 1.1×2500A natural cooling temperature rise requirements.
Advanced technical control, including robotic laser welding and helium leak detection, ensures gas tank sealing performance.
Fully enclosed gas tank, unaffected by the environment, moisture-proof, dust-proof, pollution-proof, with altitude adaptability up to 5000 m.
High performance, with a mechanical lifespan of up to 20,000 operations, maintenance-free, and a product lifespan of up to 30 years.
Fully electric operation mechanism, reliable, convenient, and fast operation.
Benefits of MV Switchgear
Safety
The primary benefit is safety. MV switchgear protects both the equipment and the people working with it. By preventing faults, it reduces the risk of injury or damage.
Reliability
Switchgear ensures that the electrical system continues to operate smoothly, even during faults. This means less downtime and more consistent power distribution.
Space Efficiency
Modern MV switchgear, especially GIS, is designed to save space. This is perfect for applications where space is limited, like in urban or industrial areas.
Ambient air temperature: Upper limit ≤ 40 ºC, lower limit ≥ -10 ºC.
Sunlight radiation < 1000W/m²
Altitude ≤ 1000m
Ice coating ≤ 20mm
Wind speed < 35m/s
Humidity: Daily average relative humidity ≤ 95%; Monthly average relative humidity ≤ 90%; Daily average relative water vapor pressure ≤ 2.2kPa; Monthly average relative water vapor pressure ≤ 1.8kPa
Earthquake intensity ≤ 8 degrees
Locations must be free from fire, explosion hazards, severe contamination, chemical corrosion, and severe vibrations.
Note: For special use conditions, please consult the manufacturer during the ordering process.
Testing & Certification
Routine Tests
Dielectric, contact resistance, insulation, control wiring continuity
Type Tests (optional)
Short circuit withstand, temperature rise, mechanical operations
Certified to
ANSI C37, UL 347A, IEEE C37.20.2, CSA C22.2 No. 31
Available Configurations
Main-Tie-Main
1
>>
Main-Feeder-Feeder
2
>>
Ring Bus & Loop Switchgear
3
>>
Redundant Utility and Generator Inputs
4
>>
With or without Transformer Integration
5
Medium Voltage Switchgear Components
Circuit breakers
The switchgear circuit breaker disconnects equipment from the power supply. There are two main types of circuit breakers used in MV switchgear: air, oil, and vacuum circuit breakers. These can be either manually or automatically operated.
Fuses
A switchgear fuse helps to protect against overloads by melting strip of material (metal) to break an electrical path. They work by “blowing” when too much current flows through them. This interrupts the circuit and prevents further damage.
Switches
Switchgear switches include electrical devices that make, carry, and break currents under normal circuit conditions and also meet the specified requirements when making, carrying, and breaking specified abnormal circuit conditions.
Relays
A switchgear relay is an electrically operated switch. During an electrical fault, its contacts close to send a signal to the circuit breaker. The signal causes the breaker to stop power transmission to a circuit or load. As such, it’s often called a protective relay.
Grounding Switches
Grounding switches are used to connect equipment to a ground. This is done to dissipate any static electricity that may have built up on the equipment. Grounding switches are typically manually operated.
Isolators
The switchgear isolator or disconnector switch connects or disconnect an electrical circuit. It effectively isolates a faulty circuit from the healthy ones, or it can be used when a circuit has to be isolated for maintenance purposes.
Surge Arresters
A surge arrester is a device that helps to protect electrical equipment from voltage spikes. A voltage spike is a sudden increase in voltage that can damage equipment. The arrester works by diverting the extra voltage away from equipment and into the ground.
Instrument Transformers
These include current and voltage transformers. A switchgear transformer can act as a metering and protection device, enabling switchgear to perform its function. Current transformers lower current, while voltage transformers, also called potential transformers, lower voltage.
Auto Reclosers and Sectionalizers
An auto-recloser in medium voltage switchgear automatically reconnects a power line or circuit after an electrical fault has been cleared. A sectionalizer’s function, on the other hand, is to isolate a section of a circuit so that it can be repaired without affecting the rest of the circuit.
Our Certificate
FAQ
We are one of the most professional medium voltage switchgear manufacturers and suppliers in China, also support customized service. Please rest assured to buy high quality medium voltage switchgear made in China here from our factory. Welcome to view our website for more information.
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