Transformer high-voltage side live indicator

I. Product Introduction: Intelligent Live Line Warning Solution Designed for Overhead Lines

In modern power transmission networks, the safe operation of high-voltage overhead lines, especially in the "three-crossing" sections (crossing railways, highways, and important transmission corridors), is of utmost importance. Whether a line is energized is the primary basis for on-site workers, surrounding construction machinery, and the public to judge safety risks.

The TLKS-PDI current grading type live line indicator launched by Telcom Technology is an intelligent safety warning device based on equipotential design. It is directly hung on 10~220kV high-voltage overhead lines, visually displaying the line's energization status through high-brightness LED lights, and has a grading display function — the larger the line current, the higher the brightness of the LED lights. This device is small in size, light in weight, and easy to install, making it an optimal solution for improving the visual safety warning level of transmission lines and preventing external damage.

II. Core Functions: Intelligent Warning, Graded Visibility

1. Intuitive Live Line Display
   When the conductor carries operating current (≥3A), the device automatically triggers high-brightness LED lights to emit noticeable flashes, clearly warning that the line is energized and effectively preventing misjudgment.
2. Intelligent Current Grading Indication
   Innovative grading function: The device can automatically adjust the brightness or number of lit LED lights according to the current of the conductor. The larger the current, the stronger the light / the more lit lights, providing operation and maintenance personnel with a rough basis for judging load current.
3. Line-side Power Self-supply, Maintenance-free Operation
   Adopting advanced line-side induction power-taking technology, it directly obtains the required energy from the operating line, without the need for an external power source or battery, realizing long-term stable operation without maintenance.
4. High-light Visibility and Environmental Adaptability
   Using specially designed LEDs to ensure a visible distance of ≥100 meters at night, and still clearly distinguishable under strong outdoor light. The fully sealed insulation structure can adapt to harsh environments from -40℃ to 70℃.

III. Technical Advantages: Safe, Reliable, and Durable

• High-voltage Equipotential Design: Operates in equipotential with high-voltage lines, has no impact on the line itself, excellent insulation performance, and strong anti-electromagnetic interference capability.
• Fully Sealed and Sturdy Structure: The main unit and all components are filled and sealed with epoxy resin, achieving a fully enclosed, high-strength voltage-resistant protection, waterproof, dustproof, and corrosion-resistant, ensuring long-term stability and reliability in harsh outdoor environments.
• Lightweight and Convenient Installation: The overall weight is ≤500g, can be easily hung and installed by one person, no power outage required, greatly simplifying the deployment process.
• Ultra-long Service Life: Designed service life is >5 years, providing long-term, economical, and sustainable safety warnings for lines.

IV. Technical Parameters Overview

V. Typical Application Scenarios

The TLKS-PDI current grading type live line indicator is an ideal safety warning solution for the following scenarios:

• Key "three-crossing" sections: Line segments crossing railways, expressways, navigable rivers, important transmission corridors, etc.
• High-risk areas for external damage: Lines passing through construction sites, mining areas, forest areas, and other active construction areas.
• Dense populated areas: Lines adjacent to residential areas, parks, and roadsides.
• Operation and maintenance auxiliary criteria: Providing patrol personnel with remotely visible reference for the line's energization status and approximate load conditions.

VI. Conclusion

The TLKS-PDI current grading type live line indicator combines direct visual warning with intelligent current grading prompts, significantly improving the safety visibility and refined management level of high-voltage overhead lines. It is a reliable "electronic sentinel" for preventing electric shock to the public, avoiding accidental contact with construction machinery, and assisting in line operation and maintenance.