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-graded live line indicator launched by Telikang Technology is an intelligent safety warning device based on equipotential design. It is directly hung and installed on 10~220kV high-voltage overhead lines, intuitively displaying the live status of the lines through high-brightness LEDs, and has a grading display function — the larger the current on the line, 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 enhancing 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 LEDs to emit a noticeable flash, 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 LEDs according to the current of the conductor. The larger the current, the stronger/brighter the lights, providing operation and maintenance personnel with a rough basis for judging load current.
3. Line-side Power Supply, Maintenance-Free Operation
   Adopting advanced line-side induction power-taking technology, it directly obtains the required energy from the operating line, no external power supply or battery is needed, achieving long-term stable operation without maintenance.
4. High Light Visibility and Environmental Adaptability
   With specially designed LEDs, it ensures a night visibility distance of ≥100 meters and is still clearly visible 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 at the same potential as high-voltage lines, has no impact on the lines themselves, and has 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, and a single person can easily complete the hanging installation without power outage, greatly simplifying the deployment process.
• 超长使用寿命：设计使用寿命>5年，为线路提供长期、经济的可持续安全警示。

IV. Technical Parameters Overview

V. Typical Application Scenarios

The TLKS-PDI current-graded 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 active construction areas such as construction sites, mining areas, and forest areas.
• Dense populated areas: Lines adjacent to residential areas, parks, and roads.
• Auxiliary operation and maintenance reference: Provides line patrol personnel with remotely visible reference for the live status and approximate load of the line.

VI. Conclusion

The TLKS-PDI current-graded 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 sentry" to prevent electric shock of the public, avoid accidental contact of construction machinery, and assist in line operation and maintenance.