Hot Line Clamp

Q: How to avoid galvanic corrosion when using Hot Line Clamps

Match the clamp material with the conductor material. For dissimilar metal connections such as copper to aluminum, choose bimetallic hot line clamps to prevent electrochemical corrosion and extend service life.

Q: Do your Hot Line Clamps support long-term outdoor use

Yes. All hot line clamps adopt high-strength alloy materials and anti-corrosion surface treatment. They can withstand wind, rain, salt spray and thermal cycling for stable long-term outdoor operation.

Q: What is the difference between aluminum and copper hot line clamps

Aluminum alloy clamps are lightweight, cost-effective and ideal for aluminum conductor connections. Copper or bronze clamps offer higher conductivity and better corrosion resistance, perfect for high-current and coastal corrosive environments.

Q: What conductor types are compatible with your Hot Line Clamps

Our hot line clamps are versatile and fit common overhead conductors, including AAC, AAAC, and ACSR conductors, suitable for most distribution and transmission line tapping projects.

Q: Can Hot Line Clamps be used on live energized lines

Discover the core advantages of CONWELL live-working products: superior dielectric strength, international standard compliance, and rugged durability for high-voltage safety.

Hot Line Clamp Manufacturer & Supplier from China – Conwell

CONWELL is a premier Chinese manufacturer of hot line clamps designed for secure, energized connections in overhead power distribution. Our high-performance live-line connectors enable essential tapping and current transfer without power interruptions, ensuring operational continuity for low and medium-voltage distribution systems.

Engineered from high-strength, corrosion-resistant aluminum alloys, our clamps feature precision-machined contact surfaces for superior electrical conductivity and mechanical stability.

Every product is manufactured under ISO 9001 certified systems and complies with international IEC standards, providing the safety and reliability trusted by power utilities, electrical contractors, and grid maintenance teams worldwide.

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Live Working Series

Line Hose & Covers Hot Line Clamp

Insulator/Arrester

Insulator Surge Arrester

Name	Model	Characteristics
Hot Line Clamp AH	AH-4	50-240mm²/25-150mm²
Hot Line Clamp YZ	YZ-1T	35-95mm²/25-70mm²
JH Hot Line Clamp	JH16-120	35-120mm²
FST Hot Line Clamp	FST-P50-240	50-240mm²
FST Hot Line Clamp	FST-V50-240	50-240mm²
Live Drain Wire Clamp GA	GA-103	8.16-15.75mm²
Double-ear live working drainage wire clamp	SR-300/150	50-300mm²/10-150mm²
Special Shaped Shunt Live Working Line Clamp	DJBL-50/240	35-240mm²/35-70mm²

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Hot Line Clamp Introduction

Features of Hot Line Clamp

Features	Description
Live-Line Operation	Allows installation/removal without de-energizing the grid, ensuring continuous service.
Corrosion Resistance	Constructed from high-strength alloys to withstand harsh outdoor environments, salt spray, and humidity.
High Conductivity	Optimized for low electrical resistance to minimize power loss and prevent overheating.
Mechanical Strength	Built to withstand physical stress from line tension, wind, and thermal cycling.
Versatile Compatibility	Designed to accommodate a wide range of conductor diameters (AAC, AAAC, or ACSR).
Anti-Fatigue Design	Includes features like spring-loaded mechanisms to maintain constant pressure despite thermal expansion.

Hot Line Clamp Applications

Tapping: Connecting service lines or branch circuits to primary transmission or distribution lines.
Transformer Connections: Interfacing distribution transformers with the main grid.
Maintenance & Repair: Performing repairs or replacing components without affecting power supply to customers.
Grid Expansion: Adding new loads to the system while keeping the existing network operational.

Materials Of Hot Line Clamp

Aluminum Alloy: Lightweight and cost-effective. Best for aluminum-to-aluminum connections to prevent galvanic corrosion.
Copper/Bronze Alloy: Offers superior electrical conductivity and mechanical strength. Ideal for high-current applications or highly corrosive environments (e.g., coastal areas).
Bimetallic/Composite: Often features an aluminum body with tinned bronze or stainless steel components (like the eye-bolt or spring) to mitigate bimetallic corrosion and increase durability.

How to Choose Hot Line Clamp

When selecting a Hot Line Clamp, evaluate the following factors:

Galvanic Compatibility: Ensure the clamp material matches the conductor material. If connecting dissimilar metals (e.g., copper to aluminum), use a specialized bimetallic connector.
Conductor Size Range: Verify that both the Main Line and Tap Line diameters fall within the clamp’s specified working range.
Current Rating: Select a clamp rated for the anticipated electrical load to ensure the connection remains cool under peak demand.
Environmental Conditions: In aggressive environments, prioritize bronze or tinned-coated materials for maximum longevity.
Tool Compatibility: Ensure the clamp’s eye-bolt design is compatible with the standard hot sticks used by your field team.
Compliance: Always verify that the hardware meets relevant industry standards (e.g., IEEE, NESC, or regional power standards).

Safety Warning

Installation and operation of Hot Line Clamps must only be performed by certified professionals using appropriate personal protective equipment (PPE) and insulated hot line tools.