High Voltage Electric Surge Arrester for Power Systems Protection

The Sangao High Voltage Electric Surge Arrester for Power Systems Protection Made in China provides essential overvoltage protection for high-capacity medium-voltage grids. Engineered as a Zinc Oxide Polymer Lightning Arrester, this high-performance wholesale component features an advanced liquid silicone rubber (LSR) outer jacket. When a lightning strike or switching surge hits the line, the inner metal oxide varistor blocks switch to a conductive state within milliseconds to safely dissipate energy into the earth, preventing internal electronic component operation errors across your power distribution system.

Advantages of Innovative Liquid Silicone Rubber

The composite outer jacket of this High Voltage Electric Surge Arrester for Power Systems Protection utilizes an innovative liquid silicone rubber (LSR) formulation that provides massive advantages over traditional rubber insulators. The low-pressure molding process used during production accelerates the filling speed of the mold cavity, ensuring a uniform, seamless jacket profile completely free of internal air gaps.

This advanced material prevents polymer breakdown under various types of overvoltage, including lightning and operational pulses. Its high elasticity allows the housing to withstand severe environmental conditions, physical pressure, and human damage.

At the same time, its persistent hydrophobicity and UV stability ensure stable outdoor protection for decades without cracking.

Product Performance Parameters 

Review the critical operating specifications for this High Voltage Electric Surge Arrester for Power Systems Protection:

• Applicable Voltage Range: 1 kV to 36 kV distribution systems.

• Environmental Temperature Boundaries: Performs flawlessly from minus 35°C to +40°C.

• Elevation Rating Envelope: Standard operation up to 1000 meters altitude.

• Alternating Current Frequency: Optimized for AC systems up to 100Hz.

• Jacket Material Innovation: Liquid silicone rubber (LSR) composite housing.

• Application Flexibility: Suitable for substations, transmission lines, and elbow type lightning arresters.

Rigorous Quality Control and Brand Backing

Sangao manufactures all surge protection equipment in compliance with global quality standards. Through decades of development and unremitting effort, our production lines utilize automated testing equipment to verify the leakage current and reference voltage of every single varistor block, providing a reliable guarantee for the energy market.

Versatile Power System Applications

This flexible High Voltage Electric Surge Arrester for Power Systems Protection is field-tested across diverse power engineering projects:

• All Overhead Applications: The Evolution lightning arrester variant can be used across all overhead lines to provide stable protection performance against lightning overvoltage.

• Pad-Mounted Transformers: Configured as specialized elbow type lightning arresters to protect underground cable terminators inside compact, fluid-filled transformers.

• Substation Overvoltage Control: Deployed at critical substation entry points to absorb high-energy switching surges generated by heavy circuit breaker operations.

Performance FAQ

Can this composite protection device handle extreme sub-zero weather conditions?

Yes. The high-elasticity liquid silicone rubber jacket maintains its flexibility and physical integrity down to minus 35°C, ensuring that extreme cold will not cause cracking or compromise the weather-proof seal.

What are the operational advantages of using elbow type configurations in a power distribution network?

Elbow type configurations allow the surge arrester to connect directly to the dead-front terminals of pad-mounted transformers and switchgear. This High Voltage Electric Surge Arrester for Power Systems Protection provides direct, space-saving overvoltage protection right at the cable termination point.

How does the low flammability of the LSR jacket improve substation safety?

In the rare event of a catastrophic grid failure, the low flammability of our liquid silicone rubber prevents the housing from supporting a fire. This self-extinguishing characteristic protects nearby substation equipment from secondary fire damage.