Gas Insulated Load Break Switch 24kV Outdoor Pole Mounted

Insulated Load Break Switch Overview

The DNSF6 outdoor pole-mounted SF6 Insulated load break switch is specifically designed for power distribution networks with a rated voltage of 12/24/40.5kV, a rated current of 400A/630A, and a frequency of 50/60Hz. It efficiently handles load current switching and overload protection while automatically isolating faulty distribution line sections.

This Insulated load break switch features a high-quality 304 stainless steel shell, ensuring excellent mechanical performance and an air leakage rate far superior to national standards. The advanced electronic controller allows for manual, electric, and remote operation, making it highly adaptable for diverse operational needs.

The stainless steel controller box ensures reliable performance under various climatic conditions, while optional wired and wireless modems enable real-time remote monitoring and control. Its simple pole-mounted installation reduces construction time and costs, making it a practical choice for both urban and rural power systems.

The DNSF6 is an ideal solution for modern power grids, offering versatile functionality, enhanced reliability, and cost-effective installation.

Insulated Load Break Switch Technical Parameter

Insulated Load Break Switch Features

• SF6 gas insulation: SF6 gas is non-toxic, non combustible electrical insulation gas, with excellent arc extinguishing characteristics.
• Sleeve diversity: porcelain sleeve or rubber insulated sleeve are optional.
• Visible open / closed state：it is easy to see color-coded switch to division and position indicator standing on the ground (Green – off; red -closed)
• The spring energy storage operating mechanism ensures fast closing and opening operation.
• It can realize remote control: it is equipped with electronic controller, which can be operated on the spot or on the console with FTU interface.

Insulated Load Break Switch Advantage

1、Versatile Operation

The DNSF6 load switch supports manual, electric, and remote operation, allowing seamless integration into both new and existing infrastructure, enhancing operational efficiency and safety.

2、Advanced Electronic Controller

Equipped with state-of-the-art technology, the DNSF6 features an electronic controller housed in a durable stainless steel cabinet, ensuring reliable performance under various climatic conditions while protecting critical electrical infrastructure.

3、Remote Monitoring

With wired and wireless modems for real-time remote monitoring and control, the DNSF6 reduces the need for on-site maintenance, improving ease of oversight and minimizing operational disruptions.

4、Superior Performance

Featuring SF6 gas insulation and high power frequency withstand voltage, the DNSF6 provides exceptional electrical insulation and arc-quenching performance, meeting stringent safety standards for high-demand environments. The robust design and stainless steel cabinet ensures reliable operation in extreme outdoor conditions, including high temperatures and humidity.

5、Cost-Effective Installation

Designed for easy pole installation, the DNSF6’s lightweight and compact structure (weighing between 115kg and 155kg depending on voltage level) significantly reduces construction costs and labor requirements.

6、Reliability and Longevity

The DNSF6 offers mechanical stability for up to 6,000 operations, with an SF6 gas leakage rate of less than 1% per year, ensuring long-term reliable performance with minimal maintenance.

What are the maintenance requirements for the DNSF6 switch?

The maintenance requirements for the DNSF6 Outdoor Pole-Mounted SF6 Insulated Load Break Switch are relatively minimal due to its robust design and advanced technology. However, to ensure optimal performance and longevity, the following maintenance practices are recommended:

1、SF6 Gas Monitoring

Regularly check the SF6 gas pressure to ensure it remains at the required level. The gas Load Break Switch is designed with a low leakage rate of less than 1% per year, but periodic checks will help identify any unexpected gas loss.

Monitor the SF6 gas moisture content, especially in humid climates, as moisture levels can affect insulation and arc-quenching performance. Ensure it stays within the prescribed range to prevent deterioration.

2、Mechanical Inspections

Inspect the switch’s mechanical components, such as hinges, joints, and moving parts, to ensure smooth operation. The switch is rated for up to 6,000 operations, so mechanical wear should be minimal, but occasional checks are advised.

Test the manual, electric, and remote operation functions periodically to ensure all modes of operation remain functional and responsive.

3、Controller and Electrical System Check

Ensure the electronic controller and all wired or wireless modems used for remote monitoring and control are functioning properly. Check connections for any signs of corrosion or wear, especially if the Insulated Load Break Switch is installed in harsh environmental conditions.

Test the remote monitoring and control systems periodically to ensure they are responsive and capable of real-time operation.

4、Visual Inspections

Conduct routine visual inspections of the stainless steel enclosure to detect any physical damage, corrosion, or signs of environmental wear. The high-quality 304 stainless steel should be durable, but regular checks will prevent issues from worsening.

Inspect the insulation and external surfaces of the switch for signs of wear, contamination, or damage, particularly after severe weather events.

5、Cleaning

Clean the switch and its components to remove dust, dirt, and other contaminants that may accumulate over time, especially in outdoor environments. This will help maintain the switch’s insulation properties and operational efficiency.

6、Operational Tests

Perform operational tests of the switch under different load conditions to ensure it functions correctly during load breaking and fault isolation. These tests will help verify the switch’s readiness in case of actual faults or overloads.

By following these maintenance practices, the DNSF6 load break switch will maintain its reliability and continue to provide efficient service with minimal interventions.