1.what is pg clamp？
A pg clamp（Parallel Groove Clamp） is an electrical accessory that is mostly used to join two or more conductors running parallel to each other. These clamps form a strong position for contact between the electrodes so that the Inter-electrode resistance is minimized to avoid loss of power.
| Section | Details |
| Evolution | PG Clamps have evolved with advanced materials and improved designs. |
| Materials Used | Older versions: Simple metal alloys – Modern versions: Aluminium, brass, bimetallic, copper |
| Benefits | Greater durability and enhanced electrical conductivity |
| PG Clamp Specification | Available in multiple configurations based on size and specific use. |
| Functions | Strong mechanical grip – High electrical conductivity – Corrosion-resistant materials – Compatible with various conductor sizes |
1.1 Evolution
PG Clamps have become more efficient over time, incorporating more advanced materials, and design composition. In older times, these clamps were made of simple metal alloys, but nowadays, manufacturers use much more expensive materials like aluminium, brass, bimetallic, and copper. Such materials allow for greater durability and conductivity of these clamps.
1.2 PG Clamp Specification
Depending on the size of the clamp and its specific use, PG Clamps is available in multiple configurations and variations. These pg clamp is used for:
– Strong mechanical grip
– High electrical conductivity
– Use of corrosion resistant material
– Usable with several sizes of conductors
2.Types of PG Clamp
To accommodate different electrical applications, PG Clamps are manufactured with varying materials:
| Section | Details |
| 2.1 Aluminium PG Clamp | Lightweight and highly conductive – Corrosion-resistant – Commonly used in overhead transmission lines and distribution networks – Must meet industry standards for durability and quality |
| 2.2 Bimetallic Clamps | Designed for connecting aluminium and copper conductors – Prevents corrosion between different metals – Used mainly in transmission and distribution lines |
| 2.3 Brass PG Clamps | Highly resistant to corrosion – Suitable for high-moisture environments – Strong mechanical properties and good electrical conductivity |
| 2.4 Copper PG Clamp | Excellent electrical conductivity – Used in high-voltage areas – Minimizes power loss |
JBL-H-2A Aluminium PG Clamp Dimensional Sketch
2.1 Aluminium PG Clamp
Due to their light weight, high conductivity and ability to withstand corrosion, aluminium PG Clamps are the most commonly used. These clamps are perfect for overhead transmission lines and distribution networks. If you need to buy a PG clamp from a aluminium pg clamp factory, make sure they check the durability and quality as per industry standards.
2.2 Bimetallic Clamps
The Bimetallic PG Clamps are intended for fastening aluminium and copper conductors together while preventing corrosion between metals. Their primary integration is seen on transmission and distribution lines where mixed metal conductors function.
2.3 Brass PG Clamps
The Brasses PG Clamps are known to corrode less and are more suitable in areas of high moisture. They are mechanically strong and good at conducting electricity.
2.4 Copper PG Clamp
Copper PG clamps have amazing conductivity and are often utilized in high voltage areas where power loss needs to be minimal.
3. Application of PG Clamp
PG Clamps find application in most electrical parts as given below.
| Section | Details |
| 3.1 PG Clamps in Transmission Line | Essential for power transmission systems – Provide electrical connectivity for four conductors – Ensure energy balance and transmission stability |
| 3.2 PG Clamp for Zebra Conductor | Used in electric power distribution – Requires strong electro-mechanical clamps – Ensures dependable electrical connections and system safety – Provides better mechanical stability and higher resistance to electric loss |
| 3.3 PG Clamp for Earth Wire | Vital in grounding systems – Helps connect earth wire securely – Prevents electrical faults and ensures power network safety |
| 3.4 PG Clamp for Distribution Lines | Secures conductors and ensures current flow – Used in distribution networks – Reliable quality provided by manufacturers |
| 3.5 PG Clamp for Substation Connections | Designed for high-voltage substations – Ensures robust and effective connections – Maintains reliable grounding and conductor integration |
3.1 PG Clamps In Transmission Line
PG Clamps are of utmost importance for systems involving transmission of power, as they are responsible for providing electrical connectivity to the four conductors. They take care of energy balance and transmission stability.
3.2 PG Clamp For Zebra Conductor
A zebra conductor used for electric power distribution requires tight electro-mechanical PG Clamps which can provide dependable and efficient electrical connections while ensuring system safety. PG Clamp for Zebra Conductor provides better mechanical stability while increasing resistance to electricloos.
3.3 PG Clamp for Earth Wire
In grounding systems, PG clamps have great significance because they help connect the earth wire which clamps so that electrical faults do not occur and safety is maintained in power networks.
3.4 PG Clamp for Distribution Lines
Along with other usages, PG Clamps in distribution networks assist in securing conductors and ensuring the flow of current. For these purposes, China PG Clamp manufacturers provide adequate quality PG Clamps.
3.5 PG Clamp for Substation Connections
PG Clamps used for Substations should be robust and effective in order to maintain reliable connections of high voltage conductors with the grounding system of the station.
PG Clamp for ACSR line
4. Install of PG Clamp
The steps to install a PG Clamp are very simple:
- Choose the specific PG Clamp which meets the size and material of the conductor.
- Open the clamp and place the conductors inside the grooves.
- Tighten the bolts to hold the conductors tightly.
- Movement and looseness must be eliminated to avoid electrical faults.
- Correct installation is the key to proper functioning and durability of the clamp.
5.Factors to consider when choosing a PG Clamp?
When selecting a PG Clamp, it is crucial to evaluate several factors to ensure optimum performance, durability, and reliability in electrical applications. Below are key aspects to consider when making a purchasing decision:
5.1 Material Composition
Aluminum PG Clamps – Lightweight, corrosion-resistant, and commonly used in overhead transmission lines.
Copper PG Clamps – Excellent electrical conductivity, ideal for high-voltage applications.
Bimetallic PG Clamps – Suitable for connecting different conductor materials (e.g., aluminum and copper) while preventing galvanic corrosion.
Brass PG Clamps – High resistance to corrosion, making them ideal for high-moisture environments.
5.2 Mechanical Strength & Durability
A high-quality PG Clamp must provide a strong mechanical grip to ensure long-term stability.
The clamp should withstand vibrations, extreme temperatures, and external mechanical stress without losing performance.
5.3 Electrical Conductivity & Performance
Ensure the PG Clamp minimizes resistance to avoid power loss and overheating.
The material should facilitate efficient current flow while maintaining electrical integrity.
5.4 Corrosion & Weather Resistance
For outdoor installations, PG Clamps should be made of corrosion-resistant materials like aluminum or coated bimetal.
Clamps in harsh environments (e.g., coastal areas, industrial sites) should have additional anti-corrosion coatings.
5.5 Compliance with Industry Standards
Choose PG Clamps that meet global electrical safety standards, such as:
IEC (International Electrotechnical Commission)
ANSI (American National Standards Institute)
NEMA (National Electrical Manufacturers Association)
Certified PG Clamps ensure safety, efficiency, and long-term reliability in electrical networks.
5.6 Ease of Installation & Maintenance
Select PG Clamps with simple installation mechanisms to reduce labor time and costs.
Bolts and tightening systems should be designed for easy adjustment and reusability.
Conclusion
In the world of electric systems, PG Clamps are essential components that ensure secure, efficient, and reliable electrical connections between conductors. Choosing the right PG Clamp is crucial for maintaining the safety and stability of transmission lines, earth wires, and substation applications.
To ensure compliance with global industry standards, professionals should refer to authoritative guidelines such as IEC 60999, which provides detailed specifications on electrical terminal connections and conductor fastening. You can access the official IEC standard for more technical insights here: IEC 60999: Electrical Terminal Connections & Conductor Fastening.
For the highest-quality PG Clamps that meet IEC and NEMA standards, SUNJ Electric offers precision-engineered solutions backed by decades of expertise. Contact us today for expert consultation and customized electrical solutions!