Insulators

Line Arrester

Introduction

NGK Line Arrester is advanced solution for lightning protection of over-head transmission lines. It protects insulators on the transmission tower from lightning strike to the tower or the shielding wire, within a half cycle. Therefore, no service interruption can be expected.

The solution with line arrester for over-head transmission lines is proven technology in Japan and some another countries with lightning problem. More than 70,000 sets are in service in this 15 years, and contribute to improvement of power supply quality.

The followings are outstanding features of NGK Line Arresters.

  • External Gap Type to ensure compact design, excellent reliability and free of maintenance
  • Zinc Oxide for current interrupting device
  • Polymeric Housing (Silicone Rubber) for light weight and easier handling
  • Pressure Relief Mechanism in case of arrester failure

Typical expected lightning performance, operating principal, applications in service, structure of arrester unit and characteristics etc. are provided for further detailed information.

Brochure:NGK Release No.105

Lightning Protection Performance

insulator-lightning

Operating Principle

insulator-principle

Applications in Service

insulator-applications

69kV Line Tension Tower

insulator-applications

500kV Line Suspension Tower

Structure of Arrester Unit

insulator-structure

Characteristics of NGK Line Arrester

insulator-characteristics

A Field Performance

insulator-field

Inquiry about Line Arrester

Please apply with the contact form and give us your comments or questions.

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