Integrated High-Voltage Switchgear Units for Prefabricated Substations (KYN28A Series)
Integrated High-Voltage Switchgear Units for Prefabricated Substations (KYN28A Series)
Voltage Range: 3.6kV to 40.5kV (Three-Phase AC System) Application: Ideal for power receiving, distribution, control, protection, and monitoring. Compliance: Fully complies with IEC 62271 standards. Customization: OEM/ODM available to meet specific grid requirements.
Product Details
Our High-Voltage Switchgear Series: Covering 12kV to 40.5kV Applications
Main Models
KYN28A-12 (12kV), KYN61-40.5 (40.5kV), compatible with VS1/VD4 vacuum circuit breakers.
KYN28A Series (Up to 24kV): The industry standard for medium-voltage primary distribution, optimized for space and operational efficiency.
KYN61 Series (40.5kV): Designed for high-voltage transmission and distribution, featuring superior insulation performance and higher breaking capacity for demanding power systems.
This unit is a core component of our custom-engineered prefabricated substation solutions. We provide end-to-end integration services.
Core Features
| Parameter | Specifications |
|---|---|
| Rated Voltage | 3.6kV - 40.5kV (Compatible with KYN28A & KYN61 series) |
| Rated Frequency | 50Hz / 60 Hz |
| Rated Current | 630A - 4000A |
| Short-time Withstand Current | 16kA - 50kA (3s) |
| Protection Degree | IP4X (Enclosure) / IP2X (Internal Compartments) |
| Standards | IEC 62271-200, GB/T 3906 |
| Environment | Indoor, -15℃ to +40℃ |
Armored Structure
The cabinet is divided into circuit breaker compartment, busbar compartment, cable compartment and low-voltage compartment. Grounded metal partitions isolate each compartment to prevent fault spread.
Removable Design
The circuit breaker trolley is drawable and switchable between working, test and isolated positions. Maintenance and replacement can be realized without busbar power cut, greatly reducing downtime.
Safety & Reliability
Equipped with standard five-prevention interlock, pressure relief channel and viewing window. Protection level reaches IP4X, complying with GB/T 3906, IEC 62271-200 and other international standards.
Our Integration Capabilities
Seamless Compatibility: We ensure perfect electrical coordination between KYN28A/KYN61 switchgear, transformers, and low-voltage distribution units.
Turnkey Design: From site-specific technical drawings to final factory integration and testing.
Project-Ready Delivery: All units are pre-wired and tested to ensure "plug-and-play" simplicity upon arrival at your site.
Application Scenarios
The KYN28A unit is precision-engineered to be seamlessly integrated into our compact prefabricated substations. We manage the full electrical assembly, ensuring optimized space utilization, thermal management, and safety coordination between the MV switchgear, transformer, and LV distribution units.
Widely used in power plants, substations, industrial and mining enterprises, commercial buildings and secondary power distribution of power grid, serving as the mainstream equipment for medium voltage power distribution.
High-Voltage Switchgear Comparison: Choosing the Right Solution for Your Project
Different projects require different levels of reliability, maintenance capability, and space efficiency. Use this comparison table to identify which switchgear technology best fits your substation requirements.
| Feature | KYN28A (Metal-Clad) | XGN15-12 (SF6 RMU) | Solid-Insulated RMU |
|---|---|---|---|
| Primary Advantage | High Raliability | Cost-Effective & Compact | Maintenance-Free & Eco-friendly |
| Rated Current | Up to 4000A | Up to 630A | Up to 1250A |
| Maintenance | Easy (Draw-out design) | Periodic (SF monitoring) | Minimal (Fully sealed) |
| Footprint | Large | Small | Minimal |
| Insulation Type | Air-Insulated | SF6 Gas-Insulated | Solid-Dielectric |
| Ideal Environment | Power Plants, Industrial Sites | Urban Grids, Commercial | Harsh / Humid / High-Altitude |
Every substation unit undergoes a full Factory Acceptance Test (FAT) before shipment to ensure 100% reliability.
Engineering Insights
KYN28A (Metal-Clad Switchgear): The industry standard for heavy-duty power distribution. Its modular, draw-out design allows for rapid maintenance and is the ideal choice for primary substations requiring high current capacity and operational flexibility.
XGN15-12 (SF6 Ring Main Unit): A reliable, space-saving solution for secondary distribution networks. It provides excellent performance in standard indoor environments where space is at a premium.
Solid-Insulated RMU: Our most environmentally friendly solution. With a fully sealed primary circuit, it is immune to environmental factors like humidity, dust, and altitude, making it the perfect choice for challenging locations where maintenance is difficult.
Still unsure which solution fits your project?
Every substation project is unique. Let our senior engineers analyze your electrical requirements and recommend the most cost-effective, high-performance configuration.
