12kv Metal-oxide Surge Arrester for Overvoltage Protection

Managing Voltage Stress Across Distribution Assets

Electrical equipment installed on outdoor networks is frequently exposed to temporary voltage increases caused by lightning activity, switching events, and system disturbances. These transient conditions can place stress on insulation systems and affect the long-term performance of transformers, switches, and line equipment.

The Reacon Polymeric Housed Gapless Zinc Oxide Arrester is designed to manage temporary overvoltage conditions within utility distribution infrastructure. By limiting surge energy before it reaches connected equipment, the arrester supports system insulation coordination and helps utilities maintain stable network operation.

This product is commonly installed near transformers, feeder exits, pole-mounted devices, and network transition points where surge exposure is most likely to occur.

Product Information

Polymer Housing Combined with Metal Oxide Technology

Modern surge arresters rely on zinc oxide varistor blocks to respond rapidly to abnormal voltage conditions. The gapless design allows the arrester to operate without traditional spark gaps, providing continuous protection under a wide range of operating conditions.

Product features include:

• Gapless zinc oxide technology

• Polymeric weather-resistant housing

• Suitable for outdoor utility environments

• Designed for medium-voltage systems

• Compatible with transformer installations

• Suitable for feeder protection applications

• Lightweight construction

• Multiple voltage ratings available

Parameter

Common Utility Applications

This arrester is frequently used in:

• Pole-mounted transformer protection

• Distribution feeder circuits

• Overhead utility lines

• Rural electrification projects

• Renewable energy collection networks

• Industrial distribution systems

• Utility switching locations

• Substation outgoing feeders

Supporting Insulation Coordination Programs

Surge arresters play an important role in insulation coordination strategies throughout modern electrical networks.

Typical objectives include: 

• Limiting temporary overvoltage levels

• Supporting transformer insulation systems

• Reducing surge-related equipment stress

• Improving feeder reliability planning

• Assisting utility asset management programs
  

Rather than acting solely as a lightning protection device, the arrester functions as part of a broader voltage management strategy used throughout distribution infrastructure.

Suitable for Utility Infrastructure Projects

The Reacon Polymeric Housed Gapless Zinc Oxide Arrester is suitable for:

• Utility companies

• EPC contractors

• Distribution network projects

• Transformer installations

• Renewable energy facilities

• Industrial power systems

• Grid modernization programs

• Electrical infrastructure developments

Customized voltage ratings and project-specific configurations are available.

FAQ

What is a gapless zinc oxide arrester used for?

It is used to control temporary overvoltage conditions and support protection of transformers and distribution equipment.

Why use a polymer housing?

Polymeric housings are lightweight and widely used in outdoor utility environments.

Where is this arrester commonly installed?

It is commonly installed on transformers, feeder circuits, overhead lines, and utility switching locations.

What is the benefit of gapless technology?

Gapless MOV technology responds rapidly to transient voltage events without relying on traditional spark-gap structures.

Can customized voltage ratings be supplied?

Yes. Reacon can provide customized specifications according to project requirements.