The parallel groove clamp connects two conductors in parallel for power distribution and transmission systems. It enables non-bearing connections, branching, overhead line jumpers, and tap configurations up to 220 kV in substations, solar, wind, and renewable energy installations.
A patented universal groove design with blended radii accommodates conductor sizes from #8 AWG to 1750 MCM while minimizing electrical resistance. Interlocking fingers prevent mismatching, serrated grooves increase contact surface area, and an extended lip aligns the clamp during tightening. The base section forms a weather shield protecting the grooves. Constructed from high-strength, high-conductivity aluminum alloy, the clamp resists stress corrosion and galvanic action. Bolts use aluminum with hardened alumilite finish or galvanized steel with inhibitor coatings. Bimetallic variants connect aluminum and copper conductors.
The clamp accommodates aluminum, copper, Aluminum Conductor Steel Reinforced (ACSR), and Aluminum Alloy Conductor (AAAC) conductors with current ratings from 600 to 2000 amperes. Spring follow-up maintains high contact pressure through thermal cycles. Pre-filled with PENETROX joint compound, the design allows hot application without disassembly, reducing installation time. Specific models feature piercing teeth for insulated cables and dual rating for bare-to-bare or bare-to-insulated connections.
Installation uses one or two-wrench methods with rotational tightening, eliminating loose parts in field conditions. The clamp holds RUS Accepted status and complies with ISO standards, undergoing rigorous testing for mechanical pull-out, torque, and corrosion resistance.
High-Performance Parallel Groove Clamp Supplier
In the field of overhead power distribution, ensuring a reliable, secure, and durable electrical connection is essential. The parallel groove clamp is a key component for this purpose. RaxPower, a leading manufacturer located in Hebei Province, China, has been specialized in low tension (LT) and high tension (HT) line cable accessories for 21 years. Our Parallel Groove clamp offers unmatched performance and durability, designed for non-bearing connections and branching of conductors.
Key features and benefits of our Parallel Groove clamp include:
- Superior Conductivity: Made from high-strength, corrosion-resistant aluminum alloy for efficient energy transfer.
- Robust Design: Ensures firm grip and high mechanical strength, withstands environmental challenges.
- Easy Installation: Compact size and user-friendly structure for quick setup.
- Corrosion Resistance: Long-term durability with protective coatings.
Why Choose RaxPower? With 17,000 square meters of production workshops and strict quality control, we conduct in-house tests such as Mechanical Pull-Out, Torque/Clamp Force, and Corrosion Resistance to ensure every clamp meets the highest standards. Our quality-first philosophy means meticulous inspection and testing, with products passing SGS tests. We are committed to providing reliable solutions with competitive pricing.
Please don’t hesitate to contact us!
| Parameter | Value |
|---|---|
| General | |
| Application | For parallel connections and branching of conductors in power distribution and transmission systems, including non-bearing connections, overhead line jumper connections, and tap configurations |
| Material | High-strength, high-conductivity aluminum alloy |
| Current Rating | 600 to 2000 amperes |
| Type | Parallel Groove Clamp |
| RoHS Compliance | Yes |
| Installation Torque | Rotational tightening method (set finger tight and wrench tightened for specified turns, e.g., 1-1/4 turns) |
| Bolt Quantity | 1 to 3 |
| Bolt Size | M8, M10 |
| Bolt Material | Aluminum with hardened alumilite finish or high-strength galvanized steel, coated with inhibitor compounds |
| Dimensions | |
| Width | Up to 43 mm |
| Height | Approx. 50 mm |
| Length | Varies by model |
| Conductor Related | |
| Compatible Conductor Types | Aluminum, Copper, ACSR, AAAC 5005, AAAC 6201 |
| Conductor Size Range | #8 AWG to 1750 MCM |
| Certifications and Compliance | |
| RUS Accepted | Yes |
| ISO Compliance | Yes |
| RoHS Compliance | Yes |
| UL Listed | No |
Frequently Asked Questions (FAQS)
What is a parallel groove clamp used for?
Parallel groove clamps connect two conductors in parallel, maximizing contact surface area for superior fit. They are used in power distribution, transmission lines, and overhead line connections such as jumper applications.
Are the clamps compatible with different conductor types?
Yes, the clamps are dual-rated for aluminum, ACSR, and copper conductors, ensuring versatility without compromising performance.
What materials and construction features are used?
These clamps are made from high-strength, high-conductivity aluminum alloy with aluminum or galvanized steel bolts. Aluminum bolts feature alumilite finishes to reduce friction. Some models include interlocking fingers to prevent mismatching and are filled with joint compounds for enhanced durability. Design features include serrated or universal groove shapes for increased conductor contact and corrosion-resistant coatings that maintain high contact pressure during thermal cycling.
What conductor size range do the clamps accommodate?
The clamps accommodate conductors from #8 AWG to 1750 MCM, with specific models covering 16-120 mm², 30.58-246.9 kcmil for AAAC, and 8 AWG to 4/0 AWG for aluminum and copper strands.
How is installation performed?
Installation involves tightening bolts to the recommended torque (typically 240 in-lbs). Interlocking fingers prevent mismatching, and some models allow rotational tightening methods for accurate torquing, enabling quick and secure setup even in hot conditions.
Do the clamps meet industry standards?
Yes, the clamps are RUS Accepted and comply with industry standards. Some models may have ISO, CE, or UL certifications depending on the specific product.
What quality assurance testing do you perform?
Our clamps undergo rigorous in-house laboratory testing including Mechanical Pull-Out Tests, Torque/Clamp Force Tests, and Corrosion Resistance Tests to ensure they meet international standards for reliability in demanding environments.
What is your production capacity and lead time for large orders?
We operate large-scale facilities with standard models readily available. For bulk orders, delivery typically takes 15 to 45 days, ensuring on-time delivery to meet project schedules.
Do you offer OEM services and competitive pricing?
Yes, we provide competitive pricing and full OEM support, allowing for customization and cost-effective solutions that help reduce production costs while maintaining consistent quality.
What after-sales support and product variety do you offer?
We provide extensive after-sales support with prompt responses and expert technical guidance. Our product range includes a variety of parallel groove clamps and related accessories, catering to diverse market needs.
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