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The APG series aluminium parallel groove connectors are purpose-built conductor connection fittings for overhead power distribution networks. Designed for both straight connection and branching of overhead lines, these cable clamps serve as a core component in power transmission and distribution construction, line maintenance, and grid upgrade projects. The product fits multiple common types of overhead aluminium conductors, providing a standardised connection solution for commercial users and engineering teams working on power infrastructure.
Built with a forging-based production process and an adjustable structural design, the APG series adapts to variable on-site installation conditions and conductor specifications. For outdoor overhead line scenarios, the clamps support long-term operation without additional protective enclosures, helping project teams streamline installation workflows and reduce overall material and labour costs for commercial procurement. This series covers a wide range of conductor cross-sections, making it suitable for both small-scale distribution line repairs and large-scale grid construction projects.
All APG series cable clamps are manufactured from aluminium alloy processed through closed-die forging technology, with a bright surface treatment applied as the final finish. The forging process forms a dense, uniform internal metal structure that supports the mechanical load and electrical conductivity requirements of overhead conductor connections.
Aluminium alloy as the base material offers consistent electrical conductivity and weather adaptability, matching the thermal expansion characteristics of aluminium-based overhead conductors. This material compatibility reduces fluctuations in contact resistance during long-term load cycling, supporting stable electrical performance across the service life of the line. The bright surface treatment provides basic corrosion resistance for outdoor exposure, adapting to most regional climate conditions in global markets.
Each clamp body is designed with slotted mounting holes, which allow position adjustment for bolts and clamping blocks. This structure enables the clamp to accommodate conductors of different cross-sections on each side, as long as both conductors fall within the rated range of the specific model.
This adjustable design brings practical benefits for industrial applications: it reduces the number of clamp models required for a single project, lowers inventory management costs for distributors and procurement teams, and reduces on-site material matching time for installation crews. During installation, technicians can adjust the clamping position according to the actual conductor diameter to ensure uniform contact pressure across the connection surface, which supports stable electrical contact performance.
The APG series aluminium parallel groove connectors are engineered for use with AAC, AAAC, and ACSR overhead conductors. Each model corresponds to a defined range of conductor cross-sections to ensure proper clamping force and electrical contact.
These cable clamps are suitable for a broad range of industrial applications, including urban and rural overhead distribution network construction, ageing power line renovation projects, temporary power supply line setup for construction sites, outdoor power system maintenance for industrial and mining enterprises, and rural grid upgrade programmes. For power engineering contractors and electrical equipment distributors, the full APG product line covers most conventional conductor connection demands in low and medium voltage overhead lines, supporting bulk procurement and project inventory preparation.
Model | Conductor Cross-section (mm2) | Bolts |
APG-A1 | Al 16-70 | 1×M8×40 |
APG-A2 | Al 16-150 | 1×M8×45 |
APG-B1 | Al 16-35 | 2×M6×35 |
APG-B2 | Al 16-70 | 2×M8×45 |
APG-B3 | Al 16-150 | 2×M8×50 |
APG-B4 | Al 25-185 | 2×M10×60 |
APG-C1 | Al 16-70 | 3×M8×45 |
APG-C2 | Al 16-150 | 3×M8×50 |
APG-C3 | Al 25-240 | 3×M10×60 |
APG-C4 | Al 35-300 | 3×M10×70 |
The type test of the APG series parallel groove connectors is performed in accordance with IEC 61238-1, a widely recognised international standard for conductor connection fittings used in power systems. This standard specifies test methods and acceptance criteria for mechanical strength, temperature rise, cyclic current loading, and other core performance indicators of compression and mechanical connectors for power conductors.
Products that meet the requirements of IEC 61238-1 can satisfy the access requirements of most international power engineering projects. For enterprise customers, this compliance reduces communication and review costs during project qualification submission. Full type test reports are available upon request for procurement teams to use in project audit and qualification verification processes.
APG series clamps are designed for connecting or branching AAC, AAAC, and ACSR overhead conductors. Each model supports a specific range of aluminium conductor cross-sections, with full details provided in the specification table.
Yes. The type test of the APG series is conducted in accordance with IEC 61238-1, the standard specification for mechanical and electrical performance testing of power conductor connectors.
Yes. The slotted hole structure of the clamp allows for position adjustment of the clamping assembly, enabling the connection of conductors with different cross-sections, provided both conductors fall within the rated range of the selected model.
All APG series aluminium cable clamps receive a bright surface treatment, which provides basic corrosion resistance for outdoor overhead line installation scenarios.
