The 15kV composite Tension insulator consists of five grey silicone rubber sheds, an 18mm-diameter fiberglass core rod, and Ball/Socket end fittings. It is mainly used for medium-voltage overhead transmission and distribution lines
This composite pin insulator represents a modern, high-performance solution for reliable 33kV power distribution, particularly in challenging environments where pollution resistance and reduced maintenance are critical.
The 11kV Polymer Tension Insulator consists of four grey silicone rubber sheds, an 17mm-diameter fiberglass core rod, and Tongue/Clevis end fittings. It is designed for medium-voltage overhead power transmission and distribution lines.
This distribution class surge arrester is designed for 12kV (system voltage) applications, capable of discharging high-energy transient surges up to 10kA (standard 8/20μs impulse current).
24kV Suspension Composite Insulator is designed for medium-voltage overhead power lines or substation applications, featuring a robust composite construction for durability and electrical performance.
This is a Horizontal Line Post Insulator, primarily designed for use in 33kV electrical systems, commonly found in substation applications (e.g., supporting busbars, disconnect switches, transformer connections) where horizontal mounting is required.
This device is a Drop Out Fuse Cutout (DO Fuse), a critical overcurrent protection component widely used in medium-voltage (MV) distribution networks, specifically designed for 11kV (11,000 Volt) systems with a rated current of 100 Amperes.
Zhejiang Langao Power Technology Co., Ltd. is a professional manufacturer for medium & high voltage electric power equipments such as composite insulator,zinc oxide lighting arrester,drop out fuse,core rod of composite insulator,isolating switch,vaccum circuit breaker,eletric power fittings,insulation sleeve,load switch,and etc. It’s a modern enterprise with high starting point, strong technical strength,and strong financial strength.
We specialize in producing high-quality composite insulators, surge arresters (lightning arresters), and drop-out fuses, ensuring reliable performance in power transmission and distribution systems.
Customized Product Solutions
We offer tailored product designs to meet specific project requirements, including material selection, voltage ratings, and mechanical strength adjustments for diverse environmental conditions.
Flexible Packaging Options
Customers can request customized packaging (e.g., anti-corrosion, moisture-proof, or branded packaging) to ensure safe transportation and storage.
Comprehensive Product Guidance
Our team provides detailed usage instructions, installation manuals, and maintenance tips to optimize product performance and longevity.
Project Acceptance Support
We assist clients in on-site testing, compliance verification, and project handover, ensuring products meet industry standards (e.g., IEC, ANSI) and local regulations.
Technical Training for Customer Factories
For partners establishing their own production lines, we offer factory setup guidance, staff training, and process optimization to enhance efficiency and quality control.
One-stop
Electrical Protection Solutions
Electric power station
The rapid development of photovoltaic energy has increased thedemand for insulator lightning arresters in the field of substations
● IEC 61109: Standard for Composite Insulators for AC Overhead Lines with Nominal Voltage >1,000V. ● ANSI 29.11: American National Standard for Composite Insulators. ● GB/T 19519: Chinese National Standard for Composite Insulators.
Surge Arresters (MOA – Metal Oxide Arresters)
● IEC 60099-4: Standard for Metal-Oxide Surge Arresters Without Gaps. ● GB 11032: Chinese National Standard for AC Surge Arresters.
Drop-Out Fuses
● IEC 60282-1: High-Voltage Fuses – Part 1: Current-Limiting Fuses. ● GB/T 15166: Chinese Standard for High-Voltage Fuses.
