Specification

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What is Dry-type Cable Bushing Outdoor Termination?

Dry-type Cable Bushing Outdoor Termination for high-voltage cable systems requires reliable insulation and protection in outdoor conditions without using liquid or gas insulation. In contrast to mainstream porcelain or composite bushings, the dry-type bushing is based on solid insulation materials that simplify maintenance and cut down on the risks for the environment resulting from fluid leaks. For installations having critical long-term stability, low maintenance, and environmental resilience, this is the ideal termination. The rugged outer shell of the bushing is UV resistant, temperature, moisture, and contamination-proof. The solid dielectric material, e.g. specially formulated polymeric insulators, has both good electrical insulation and mechanical strength. This dry-type design enables minimum surface tracking and flashover with stable performance in heavily polluted or high-humidity areas.

Features

1. Optimized Shed Design—One-Piece Molded Structure

The single molding process meant that the bushing was crafted seamlessly, robustly, and without weak points. Its shed configuration minimizes creepage distance and protects areas against water and pollutants to keep insulation performance going for years, even in difficult outdoor conditions.

2. Shed Distribution Across High Electric Field Zones

Across regions with the highest electric field stress, sheds are strategically placed to provide consistent insulation and reduce electrical discharge. The thoughtful placement of sheds increases the bushing’s reliability in high-voltage applications immensely.

3. Improved Shielding and Sealing through Dual Metal Termination

A double-ended, dual metal termination structure of the bushing is provided to improve the electrical shielding and to provide a tight seal. It improves the bushing’s reliability and durability while offering secure resistance to moisture ingress and dust creation.

4. Pre-Expanded Technology for Versatile Installation

This Dry-type Cable Bushing Outdoor Termination is equipped with pre-expanded components to accommodate several installation methods, giving field flexibility to some installations. It maintains stable performance and insulation regardless of what position the bushing is, i.e.; vertical, horizontal, or angles.

5. Unique Tail-End Fixing for Optimal Mechanical Stability

Its mechanical stability is reinforced from the tail-end by a specific fixing mechanism of the bushing, and attached under various operating conditions securely. This innovation adds structural integrity and resilience in high-vibration or heavy-load environments.

Main Components

1. Terminal Connector

The terminal connector is made of T2 copper, featuring high conductivity that assures an effective electrical connection of the cable to the system. It minimizes power loss and overall improves performance.

2. Shielding Cover

The shielding cover is constructed from cast aluminum and provides effective electric field control, spanning the bushing, such that electric fields are dispensed evenly. It is intended to reduce the risk of discharge to protect unstable insulation at high voltage.

3. Outdoor Terminal

The outdoor terminal is composed of liquid silicone rubber with good weather-resistant insulation properties. This protects the termination from high humidity, UV radiation, and high pollution and it’s ideal for outdoor environments.

4. Stress Cone

The stress cone is also made of liquid silicone rubber, to evenly distribute electrical stress within the bushing. This minimizes the stress concentrations, resolving the insulation system from stress concentration failure.

5. Current Collecting Ring

The termination is made of copper and the current collecting ring improves electrical stabilities by allowing a uniform current distribution within the termination. Potential hot spots are thereby reduced and the overall electrical performance improves.

6. Tail Tube

The tail tube was constructed of copper and serves as both a structural support and additional environmental protection, keeping the bushing intact.

7. Grounding Busbar

The grounding busbar is made of copper, an assurance of having a strong and stable grounding connection, more crucial to safely redirecting fault currents and consequently the overall safeness of the installation.

Certificate

Factory

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