The Usune Kyn28 Switchgear 24kV is a core medium-voltage power distribution product from Zhejiang Youshun Electric Co., Ltd. It is compatible with 3.6~24kV three-phase AC 50/60Hz power systems, integrating reliability, safety, and ease of maintenance, and conforms to GB, IEC standards, and ISO systems. Based in China, and as a professional manufacturer and reliable supplier, it is widely used in various fields and is a preferred choice for high-performance medium-voltage power distribution systems supplied directly from the factory.
The Usune Kyn28 Switchgear 24kV is an indoor metal-clad withdrawable medium-voltage vacuum switchgear with rated
voltages covering mainstream levels of 13.8kV, 17.5kV, 20kV, and 24kV. Specifically designed for three-phase AC 50/60Hz
power systems, its core functions are efficient power reception and precise distribution, while also enabling real-time
circuit control, fault protection, and operational status monitoring. As a benchmark product from Usune's 14 years of
experience in the medium-voltage electrical field, its design integrates mature structure and advanced technology,
balancing electrical performance with ease of operation and maintenance, and fully meeting the essential medium-voltage
power distribution needs of the power, industrial, and building sectors.
Low voltage switchgear
Medium voltage switchgear
Execution Standards
The Kyn28 Switchgear 24kV strictly adheres to multiple authoritative domestic and international technical standards
to ensure compliance throughout the design, production, and testing processes. Core standards include:
- National Standards: GB3906-2006 "3.6-40.5kV AC Metal-Enclosed Switchgear and Controlgear", GB/T11022 "General
Technical Requirements for High Voltage Switchgear and Controlgear", DL/T404 "Technical Conditions for Ordering
Indoor AC High Voltage Switchgear"
- International Standard: IEC62271-200 "AC Metal-Enclosed Switchgear and Controlgear with Rated Voltage Above 1kV
and Below 52kV"
Environmental Operating Conditions
1. Temperature: -15℃~40℃; Humidity: Daily average ≤95%, Monthly average ≤90%
2. Altitude ≤1000m, Seismic intensity ≤8 degrees
3. Free from corrosive and flammable gases and frequent vibrations; special operating conditions can be customized
upon negotiation.
Core Structural Features
1. Armored Enclosed Structure: Independently partitioned functional rooms isolate electric arcs, enhancing safety.
2. Removable Handcart: Facilitates component replacement and maintenance, shortening uptime.
3. Double Interlocking: Provides five-proof protection, eliminating misoperation.
4. Vacuum Arc Extinguishing: Strong arc extinguishing capability, long lifespan, suitable for frequent operation.
5. Pressure Relief Channel: Directional pressure release in case of fault, protecting surrounding equipment.
Technical Specifications
Parameter Category
Core Indicators
Rated Voltage
13.8kV, 17.5kV, 20kV, 24kV
Rated Frequency
50Hz/60Hz
Rated Current
630A~3150A
Rated Short-Circuit Breaking Current
25kA~50kA
Protection Level
IP4X (Cabinet), IP2X (Between Compartments)
Item
Unit
Parameter
Rated voltage
kV
24
Rated frequency
Hz
50
Rated current of circuit breaker
A
630, 1250, 1600, 2000, 2500, 3150, 4000
Rated current of switch cabinet
A
630, 1250, 1600, 2000, 2500, 3150, 4000
Rated dynamic current (4s)
kA
16, 20, 25, 31.5, 40, 50
Rated steady current (peak)
kA
40, 50, 63, 80, 100, 125
Rated short circuit breaking current
kA
16, 20, 25, 31.5, 40, 50
Rated short circuit making current
kA
40, 50, 63, 80, 100, 125
1min power frequency withstand voltage
Pole-pole, pole-earth
kV
65
Across isolating distance
kV
79
Lightning impulse withstand voltage (peak)
Pole-pole, pole-earth
kV
125
Across isolating distance
kV
145
Protection level
IP4X for enclosure, IP2X for isolating room and circuit breaker room open
Note: short-circuit capacity of CT should be considered separately.
Typical Application Cases
Case 1: Power Distribution Project in a Large Chemical Industrial Park in Southeast Asia. Usune, as a professional
manufacturer, provided 82 switchgear panels for this park, suitable for heavy loads, with no performance degradation
after 3 years of continuous operation, becoming a local benchmark.
Case 2: Power Distribution Project in a Super High-Rise Commercial Complex in China. Applied to a 428-meter super
high-rise underground substation, its compact design and high protection adapt to the enclosed environment, ensuring
stable power supply for a daily flow of over 100,000 people.
Product External Dimension
Project Reference
Cas-space Rocket Launch Project
Test Report
Usune Brand and Service Advantages
1. Professional Strength: 14 years of deep cultivation, possessing independent R&D and customized production
capabilities.
2. Rigorous Quality Control: Full-process quality inspection, each device comes with a complete test report.
3. Efficient Delivery: Standard orders delivered in 15-20 days, adaptable to urgent needs.
4. Customization Services: Supports OEM, logo, and parameter customization to meet individual needs.
5. After-Sales Guarantee: 12-month warranty, after-sales response and resolution within 1-3 days.
The Usune Kyn28 Switchgear 24kV, with its mature technology and reliable performance, has become the preferred
choice for medium-voltage power distribution globally. Leveraging the advantages of the China supply chain and
direct factory supply, Usune positions itself as a professional manufacturer and reliable supplier, contributing to
the development of global power infrastructure.
Hot Tags: Kyn28 Switchgear 24kv, Medium Voltage Switchgear, 24kv Switchgear
If you have any inquiry about a quotation or cooperation, please feel free to email or use the following inquiry form. Our sales representative will contact you within 24 hours.
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies.
Privacy Policy