12kv Metal-oxide Surge Arrester for Overvoltage Protection

The Polymeric Housed Zinc Oxide Surge Arrester Without Gaps is a modern gapless lightning protection device designed to protect electrical equipment from lightning overvoltage and switching surges. This zinc oxide surge arrester without gaps adopts advanced metal oxide varistor (MOV) blocks combined with a high-quality polymer housing, ensuring fast response, low residual voltage, and excellent sealing performance. Compared with traditional gapped arresters, the gapless design offers higher reliability and maintenance-free operation for power distribution systems.

Features:

1）Silicone polymer housing composite metal oxide surge arrester and porcelain housing metal Oxide surge arresters are available.

2）Easy installation and maintenance.

3）Good sealing capability to ensure reliable operation.

4）Protection and reliability of the surge arrester have been greatly enhanced.

Product Advantages:

• Gapless design for instant surge response

• Low residual voltage, excellent protection level

• Polymeric housing with strong pollution resistance

• Lightweight and high mechanical strength

• Excellent sealing and moisture resistance

• Maintenance-free and long service life

• Widely used in overhead and substation systems
  

Parameter

Applications & How to Apply:

• Overhead power distribution lines

• Substations and transformer protection

• Pole-mounted transformers

• Medium and high voltage power networks

• Areas with frequent lightning activity

How to Apply : 

• Install the polymeric housed zinc oxide surge arrester without gaps close to the protected equipment, such as transformers or line terminals.

• Connect the arrester in parallel between the phase conductor and ground.

• Ensure proper grounding to guarantee effective discharge of surge current.

• Regularly inspect appearance and grounding condition, no routine maintenance required.

Quality Assurance :

• High-quality zinc oxide varistor blocks

• Strict electrical performance and aging tests

• Reliable polymer housing materials

• Designed for long-term outdoor operation

• Factory inspection before shipment

FAQ :

Q1: What does “without gaps” mean for a surge arrester?

A1: It means the arrester uses metal oxide varistors directly without spark gaps, providing faster and more reliable protection.

Q2: Why choose a polymeric housed surge arrester?

A2: Polymeric housings offer better pollution resistance, lighter weight, and improved safety.

Q3: Is this surge arrester suitable for outdoor installation?

A3: Yes, it is specially designed for outdoor power distribution systems.

Q4: Does this arrester require regular maintenance?

A4: No, the gapless design allows maintenance-free operation under normal conditions.

Q5: What equipment can it protect?

A5: It protects transformers, cables, switchgear, and overhead lines from surge damage.