💡 Basic Information
Protection Relay
Chinese Brand
Breaking Capacity
25ka 31.5ka
Production Capacity
100/Month
📦 Packaging & Delivery
Package Size
90.00cm * 170.00cm * 250.00cm
Package Type
Wooden Package
🛠️ Product Description
KYN28A-10KV Switchgear: Vacuum Circuit Breaker Drawout Type Metal-Clad HV Switchgear
The KYN28A-12 Indoor AC Metal-Clad Drawout Switchgear is a state-of-the-art medium-voltage (MV) switchgear designed for 3-10KV three-phase AC 50Hz power distribution systems. This 10KV switchgear integrates advanced vacuum circuit breaker technology with robust metal-clad construction, ensuring reliable performance in power generation, transmission, and distribution networks.
Main Technical Parameters
| Item |
Unit |
Numbers |
| 1 min frequency withstand voltage (phase-to-ground/outlet) | kV | 42/48 |
| Lightning impulse withstand voltage (phase-to-ground/outlet) | kV | 75/85 |
| Rated Voltage | kV | 6.3KV 10KV 12KV 13.8KV 15KV 20KV 24KV |
| Rated Frequency | Hz | 60/50HZ |
| Rated current | A | 630~3150 |
| Rated current of main busbar | A | 1250, 1600, 2000, 2500, 3150 |
| Rated short-time withstand current(4s) | kA | 16, 20, 25, 31.5, 40, 50 |
| Rated peak withstand current | kA | 40, 50, 63, 80, 100, 125 |
| Protection class | - | IP4X for enclosure, IP2X for breaker door opening |
| Dimension(W×D×H) | mm | 800(1000)×1500(1300, 1670, 1800)×2200 |
Core Design Advantages
- Metal-Clad Construction: Fully enclosed metal structure with separate compartments enhances safety by isolating live components.
- Drawout Mechanism: VCB is mounted on a withdrawable trolley for quick disconnection and maintenance without de-energizing the whole system.
- Five Anti-Misoperation Interlocks: Comprehensive safety interlocks to prevent accidental operation, loaded withdrawal, and unauthorized access.
Applications and Use Cases
- Power Generation: Control generator output in thermal, hydro, and renewable plants.
- Industrial Distribution: Ideal for manufacturing, mining, and data centers.
- Commercial Infrastructure: Management of electrical loads in hospitals, malls, and offices.
- Utility Substations: Key component for power transformation in urban/rural grids.
Installation & Maintenance
Installation: Floors must support 800kg/m². Requires a clean, dry indoor environment with adequate ventilation.
Maintenance: Daily inspections for abnormal sounds or overheating; monthly checks for busbar cleanliness; annual overhauls for VCB contact resistance and vacuum integrity.
🖼️ Product Gallery
❓ Frequently Asked Questions
What are the main applications for KYN28A-12 switchgear?
It is widely used in power plants, industrial manufacturing, data centers, and utility substations for controlling and protecting medium-voltage electrical systems (3-10KV).
What are the "Five Anti-Misoperation Interlocks"?
These are safety mechanisms designed to prevent accidental circuit breaker operation, loaded withdrawal/insertion of the trolley, closing earthing switches with live circuits, energization with closed switches, and unauthorized access to live compartments.
Does the switchgear comply with international standards?
Yes, it strictly adheres to IEC 62271-203, GB 3906-2006, and DL/T 404-2007 standards, ensuring global quality and safety compliance.
What is the advantage of the drawout mechanism?
The drawout mechanism allows the vacuum circuit breaker (VCB) to be easily withdrawn for maintenance or replacement without shutting down the entire distribution system, minimizing downtime.
What are the protection ratings for the KYN28A cabinet?
The enclosure provides a protection class of IP4X, and IP2X for the breaker compartment when the door is open.
What is the rated short-time withstand current?
Depending on the configuration, it ranges from 16kA to 50kA for a duration of 4 seconds.
Zago Electric
