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Medium-Voltage Switchgear
Medium Voltage Automatic Transfer Switchgear
Medium Voltage Automatic Transfer Switchgear(MV ATS)

 Product Overview:Medium Voltage Automatic Transfer Switchgear is designed for use in AC 50Hz, rated voltage 12kV, rated current up to 630–1250A dual-power supply systems. In the event of a power loss or under-voltage in one source, it automatically transfers the load to the other healthy power source, ensuring highly reliable and continuous electrical supply.

Scope of Application:It is an “auto-transfer and auto-reset” type dual-power automatic switching system designed to be used in conjunction with high-voltage vacuum circuit breakers. Major applications include hospitals, shopping malls, banks, chemical plants, metallurgical facilities, high-rise buildings, military installations, firefighting systems, and other vital locations where power interruption is not permitted.

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Incoming-Line-Switchgear
10-15KV Incoming Line Switchgear

Product Introduction:This device is a key component in 10-15 kV power systems, distributing high-voltage electricity in substations while providing protection and control. Compliant with IEC/ANSI standards, it’s used in industrial, commercial, and utility networks.

Rated Voltage: 15kV ,12KV,11KV,10KV
Rated Current: 630A–4000A (configurable per load requirements)
Short-Circuit Breaking Capacity: 25kA–50kA (IEC standard)
Insulation Level: 28kV power frequency withstand/75kV lightning impulse
Ingress Protection: IP4X (enclosure)/IP2X (internal compartments)
Operating Mechanism: Spring-charged/motorized/manual

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11kV Switchgear
11kv Medium-Voltage Switchgear
Scope of Application:11kV switchgear Typical applications include main distribution rooms in factories, substations in commercial complexes, backup power systems in hospitals, and grid connection points in photovoltaic power plants. The design accommodates various operational configurations, including radial, ring-main, and double-busbar systems.
 
Rated Voltage: suitable for 15KV/12KV/11kV/10KV distribution systems
Rated Current: Standard ratings of 630A, 1250A, 1600A, 2000A, 2500A, and 3150A
Short-Circuit Withstand Current: 20kA/1s, 25kA/1s, 31.5kA/1s, and 40kA/1s
Insulation Medium: Air-insulated (AIS) or SFgas-insulated (GIS)
Circuit Breaker Type: Vacuum circuit breaker (VCB) or SFcircuit breaker
Operating Mechanism: Spring-operated or motor-driven spring-operated
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Ring Main Unit (RMU)
Ring Main Unit (RMU)

Scope of Application:The Ring Main Unit (RMU) is a compact switchgear device used in medium-voltage power distribution systems (typically 10kV–35kV). It is suitable for urban power grids, industrial parks, commercial buildings, rail transit, renewable energy generation, and other applications, enabling ring-network power supply, line protection, and power distribution.

Parameters:Rated Voltage: 10KV/11KV/12kV / 24kV / 40.5kV
Rated Current: 630A / 1250A / 2500A
Short-Circuit Breaking Capacity: 20kA / 25kA / 31.5kA
Protection Level: IP67 (gas compartment) / IP4X (cabinet)
Insulation Medium: SF6 / Vacuum / Dry Air / Solid Insulation

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KYN28-12 Metal-Clad Withdrawable Medium Voltage Switchgear
KYN28-12 Metal-Clad Withdrawable Medium Voltage Switchgear

Scope of ApplicationThe KYN28-12 metal-clad withdrawable switchgear is designed for three-phase AC power systems (50Hz or 60Hz, rated voltages of 3.6kV, 7.2kV, 10kV, 11kV, 12kV and 15kV), and is used for power distribution, control, and protection in power plants, substations, industrial plants, and critical infrastructure. It is especially suitable for frequent switching and high-reliability applications.

Rated Current: 630A, 1250A, 1600A, 2000A, 2500A, 3150A
Icw: 25kA/4s, 31.5kA/4s, 40kA/4s
Ipk: 63kA, 80kA, 100kA
IP Rating:IP4X P2X

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INDUSTRY NEWS More
Switchgea
Development Directions of Switchgear under New Quality Productive Forces
      Enhancing development quality and transitioning from the previous extensive economic growth model to intensive, high-quality development are equally crucial for the evolution of switchgear.         The switchgear industry suffers from severe homogenization, with low-quality products proliferating unchecked through simple repetition, competing solely on price and cost while neglecting quality. This approach consumes vast material resources without regard for sustainability, prioritizing short-term compliance over long-term reliability.
2025/09/09
Marine Switchboard
Marine Switchboard Market Share Analysis and Development Trend Analysis
Conclusion: European players maintain short-term dominance in premium segments, but Chinese manufacturers are rapidly gaining ground through cost and scale advantages. Future competition will center on smart functionalities, green compatibility, and modular innovation, with technological agility determining market repositioning.
2025/07/17
Switchgear
The market share of Chinese switchgear exported to Indonesia
China holds 60-70% of Indonesia's switchgear imports, led by cost-competitive LV/MV products. Key drivers: Indonesia's power demand growth (6-7%/year) and infrastructure projects. Challenges include local content rules (TKDN) and certification. Growth areas: renewables and smart grids. Chinese firms advance via tech upgrades and localized production.
2025/07/16
Control-Switchgear
Chinese-Developed Intelligent Power Distribution Switchgear Debuts at Munich Event
Munich, Germany – From June 24th to 27th local time, the 27th Laser World of Photonics was held at Messe München. ShengLong Electric showcased its self-developed AI-iPanel, the world's first artificial intelligence power distribution switchgear, attracting significant attention from global professionals.
2025/07/15
technical knowledge More
Medium-Voltage Switchgear
Medium-Voltage Switchgear Retrofit Solutions
   The typical service life of medium-voltage switchgear is approximately 20 years. After prolonged operation, various issues may arise, such as insulation aging, increased temperature rise, circuit breaker mechanism jamming, and loss of vacuum, all of which pose significant risks to continued operation. Replacing entire units requires substantial financial investment and time, whereas retrofitting offers a rapid solution to address safety hazards, revitalize the equipment, and ensure continued safe operation.
2025/09/01
Medium-Voltage Switchgear
Common Voltage Ratings and Insulation Levels for Medium-Voltage Switchgear
 Even for the same voltage level, different standards may require verification of both power frequency withstand voltage and lightning impulse withstand voltage. For instance, some regions like Southeast Asia and Australia require 11/12 kV switchgear with a power frequency withstand voltage of 28 kV but a lightning impulse withstand voltage of 95 kV. Standard domestic 12 kV switchgear cannot meet this requirement; enhanced insulation type, high-altitude type products, or using a higher-rated switchgear (e.g., 24 kV) to substitute for a lower one ("using a higher rating to cover a lower one") may be necessary.
2025/08/28
Medium-Voltage Switchgear
Application of Wireless Communication in Medium-Voltage Switchgear
  High-voltage electrical equipment carries voltages ranging from several thousand to millions of volts. These high voltages are conducted through busbars, which must be isolated from the ground and supported by non-conductive insulation components. In addition to the normal operating voltage, high-voltage systems are subject to switching overvoltages and lightning impulse overvoltages, which can be 3 to 8 times the operating voltage. Insulation components must therefore withstand both the normal operating voltage and these overvoltage conditions while maintaining insulation integrity.
2025/08/28
Miniaturizing 36kV Switchgear
Challenges in Miniaturizing 36kV Switchgear
  The miniaturization of switchgear is a common demand in the IEC market. For instance, the standard dimensions for 13.8kV (17.5kV), 1250A switchgear are typically 600mm in width and 2100mm in height, while 3150A versions are generally only 900mm wide.
2025/11/21
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