Bimetallic Parallel Groove Clamp - CAPG Series | Non-Tension Al-Cu Connector

Bimetallic Parallel Groove Clamp | CAPG Series | Telexc

Bimetallic Parallel Groove Clamp – CAPG Series | Non-Tension Al-Cu Connector

Key Features

Non-tension connector for parallel conductor connections
Bimetallic Al-Cu design with a welded copper insert for the tap groove
Hot-compressed CUPAL plate for low resistance and anti-corrosion
Cross-grooved channels for enhanced mechanical grip
Spring/Belleville washers to compensate for thermal expansion
Pressure pad for uniform contact along the conductor length
Fast and easy installation with standard tools
Wide conductor size compatibility

Category: Mechanical Connectors Tags: Al-Cu Connector, Bimetallic Parallel Groove Clamp, Bimetallic PG Clamp, IEC 61284 Clamp, Non-Tension Clamp, Overhead Line Fittings, Parallel Groove Clamp, Telexc PG Clamp

The Telexc Bimetallic Parallel Groove Clamp (CAPG Series) is a non-tension electrical connector designed for reliable parallel connection of aluminum-to-aluminum or aluminum-to-copper conductors. It is widely used in overhead transmission and distribution networks, substations, and service lines.

The clamp features a hot-compressed Cu-Al (CUPAL) bimetallic plate on the tap side, ensuring excellent electrical conductivity while preventing galvanic corrosion between dissimilar metals. Cross-grooved clamp channels, pressure pads, and spring washers provide uniform contact pressure, high mechanical pull-out strength, and stable performance under temperature variations.

Manufactured from high-strength, corrosion-resistant aluminum alloy with Grade 8.8 hot-dip galvanized or stainless steel fasteners, the CAPG Series PG Clamp delivers long service life, low contact resistance, and consistent current-carrying capacity without reducing conductor performance.

International Standard Compliance

IEC 61284 – Design and testing of overhead line fittings
VDE 0210 / VDE 0212
GB/T 2314-1997 – Mechanical performance
GB/T 2317.3-2000 – Heat cycle testing
GB/T 13140.4-1998 – Insulation & waterproof performance
ISO 9001 / ISO 14001 / ISO 45001 management systems

Construction & Materials

Upper Jaw: High-strength aluminum alloy with welded copper insert
Lower Jaw: High-strength aluminum alloy with welded copper insert
Bimetal Plate: Hot-forged Cu-Al (CUPAL) sheet
Fasteners: Grade 8.8 hot-dip galvanized steel or stainless steel
Washers: Spring/Belleville type for pressure retention

Mechanical & Electrical Performance

Slip strength: ≥ 10% of reference conductor tensile strength
No reduction in conductor current-carrying capacity
Connector resistance ≤ 1.1 times equivalent conductor length
Temperature rise at joint ≤ reference conductor temperature

Installation Guide

Clean conductor surfaces and apply oxide-inhibiting compound.
Place the main and tap conductors into their respective parallel grooves.
Ensure the correct positioning of the bimetallic copper insert on the Cu side.
Tighten bolts evenly using recommended torque values.
Verify firm grip and uniform contact before energizing.

Bimetallic parallel groove clamp for Al-Cu conductors offers high strength, low resistance, and is IEC compliant.

Model No.	CU Range (mm²)	AL Range (mm²)	L (mm)	B (mm)	H (mm)	Bolt Size (M)	Bolts Qty.
TX-CAPG-A1	6–50	16–70	25	42	40	8	1
TX-CAPG-A2	10–95	25–150	30	46	50	8	1
TX-CAPG-B1	6–50	16–70	40	42	45	8	2
TX-CAPG-B2	10–95	25–150	50	46	50	8	2
TX-CAPG-B3	16–185	35–240	62	58	60	10	2
TX-CAPG-C1	6–50	16–70	60	42	45	8	3
TX-CAPG-C2	10–95	16–150	70	46	50	8	3
TX-CAPG-C3	25–185	35–240	90	58	60	10	3
TX-CAPG-C4	35–240	35–300	105	65	70	10	3

Applications

Overhead transmission and distribution lines
LV & MV power distribution networks
Substation and transformer connections
Service line and tap-off connections
Renewable energy systems (solar & wind)
Railway electrification networks

Product Advantages

High electrical efficiency with minimal power loss
Strong mechanical performance in harsh environments
Long-term corrosion resistance
Reduced maintenance and downtime
Competitive pricing with consistent quality

Frequently Asked Questions (FAQs)

Q1: What is the primary function of the TX Series Bimetallic Parallel Groove Clamp?
The TX Series CAPG clamp is designed to create a secure, non-tension parallel electrical connection between aluminum-to-aluminum or aluminum-to-copper conductors in overhead and distribution networks.

Q2: Is this clamp suitable for aluminum to copper connections?
Yes. The clamp includes a hot-forged bimetallic Cu-Al plate on the tap side, which ensures stable conductivity and prevents galvanic corrosion when connecting copper and aluminum conductors.

Q3: Does the clamp reduce the current-carrying capacity of the conductor?
No. The TX Series PG Clamp is engineered so that electrical resistance and temperature rise at the joint are equal to or lower than the reference conductor, ensuring no reduction in ampacity.

Q4: Is the clamp considered a tension or non-tension connector?
It is a non-tension connector, intended for electrical continuity rather than mechanical load bearing.

Q5: What type of conductors can be used with this clamp?
The clamp is compatible with bare aluminum conductors (AAC), aluminum conductor steel-reinforced (ACSR), copper conductors, and jumper conductors.

Q6: How does the clamp maintain stable contact under temperature changes?
Spring (Belleville) washers are used to maintain consistent contact pressure, compensating for thermal expansion and contraction of conductors.

Q7: What materials are used for corrosion protection?
The connector body is made from corrosion-resistant aluminum alloy, while fasteners are available in hot-dip galvanized steel or stainless steel. An oxide-inhibiting compound further enhances protection.

Q8: Is special tooling required for installation?
No special tools are required. Standard torque wrenches or spanners are sufficient, making installation quick and field-friendly.

Q9: Are different conductor size combinations available?
Yes. The TX Series covers a wide range of aluminum and copper conductor cross-sections, suitable for various LV and MV applications.

Q10: Can this product be customized?
Yes. Telexc offers OEM and customization services including size range, fastener material, surface treatment, and branding.

Q11: Are samples available for evaluation?
Yes. Samples can be provided free of charge; customers only need to cover the freight cost.

Q12: Is there a minimum order quantity (MOQ)?
There is no MOQ for the first order.

Our Services

Rich experience in ODM & OEM production
Excellent one-stop solution for telecom and power hardware
High-quality precision casting and forging capabilities
Factory-direct pricing with fast delivery
Strict quality control and inspection at every stage
Warm welcome to visit our factory for cooperation opportunities

About Us

Telexc is a high-tech enterprise specializing in the manufacturing of hardware equipment for the telecommunications and electric power sectors. With production and sales centers in Tianjin and Hebei, China, our products are successfully operating in over 30 countries and have been trusted in power systems for more than 20 years. We are an approved and certified supplier to major telecom companies worldwide and have earned excellent references from numerous utility departments. Our facilities are equipped with modern machinery, advanced testing equipment, and a skilled engineering team.

Telexc is certified under:

ISO 9001 (Quality Management)
ISO 14001 (Environmental Management)
ISO 45001 (Occupational Health & Safety)

With innovation, reliability, and customer satisfaction at our core, Telexc continues to lead the way in transmission and telecommunication line hardware manufacturing.

Why Choose Telexc

Proven supplier for LV & MV EPC projects worldwide
Strict quality control and full performance testing
OEM & customization support available
Complete tender documentation provided
Fast quotation and reliable after-sales support