Product Description

The DTL-2 copper-aluminum transition terminal (commonly known as a copper-aluminum lug) is a connection component specifically designed to join dissimilar metal conductors, such as copper and aluminum. Offering stable and reliable performance, it meets the demands of long-term operation in various rigorous environments, including indoor and outdoor power systems, power distribution networks, and high-voltage equipment.

Its structural design takes into account the distinct physical properties of copper and aluminum, effectively resolving common issues associated with traditional conductors or connection methods and preventing electrochemical corrosion at the connection interface; it is particularly well-suited for connecting aluminum conductors to copper equipment.

This series offers a comprehensive range of specifications, accommodating aluminum cables from 10 mm² to 300 mm². Distinguished by its high safety, strong reliability, low energy consumption, and long service life, the product has become the preferred solution for copper-aluminum connections within power systems.

Product Specification

Item Parameter	Technical Standard	Performance Description
Executive Standard	GB/T 14315-2010	National standard for power fittings, suitable for domestic high and low voltage power distribution projects
Main Material	Connection end: T2 high-purity copper Crimping end: 1060 high-purity aluminium	Free of impurities, high conductivity and good toughness
Manufacturing Process	Integrated composite forming by friction welding	No gaps, delamination or fracture at copper-aluminium joint
Contact Resistance	≤20 μΩ	Extremely low resistance, no heating when energized, low energy consumption
Rated Operating Temperature	-40℃ ~ +125℃	Tolerates high and low temperatures, long-term service in harsh outdoor environments
Short-time Withstand Current	Complies with the national standard ampacity for corresponding cable sizes	Strong overload capacity, resistant to burnout
Anti-corrosion Performance	Electrochemical isolation anti-corrosion treatment	Eliminate galvanic corrosion caused by copper-aluminium potential difference, anti-oxidation and rust-proof
Mechanical Tensile Strength	≥ Rated tensile force of cable	Firm connection after crimping, anti-pull and anti-drop
Vibration Resistance	No loosening or temperature rise under power frequency vibration	Suitable for switchgears and equipment under high-frequency vibration conditions
Applicable Voltage	0.6/1kV low voltage power distribution system	Widely used in general industrial, construction and grid renovation projects
Insulation Compatibility	Compatible with heat shrink tubes and insulating sleeves	Convenient construction and reliable insulation protection
Service Life	≥15 years outdoors, ≥25 years indoors	Integrated forming structure with stable and durable performance

Operating Environment Conditions

Ambient temperature: -40℃ ~ +125℃
Altitude: ≤1000 m (customized design available for high-altitude areas)
Relative humidity: ≤95% at 25℃, non-condensing
Surrounding atmosphere: Free of severely corrosive gas and explosive dust
Vibration condition: No violent mechanical vibration
Installation location: Indoor or outdoor

Product Packing

FAQ

Q1: What is the primary application of the DTL-2 bimetallic terminal lug?

R1: This product is used for the transition connection between aluminum cables and copper equipment (such as transformers, switchgear, or copper busbars), designed to prevent electrochemical corrosion caused by direct contact between copper and aluminum.

Q2: What manufacturing process is used?

R2: We employ an integrated process combining friction welding and composite forming; this creates a strong metallurgical bond between the copper and aluminum, ensuring the product is free from defects such as pitting, delamination, or cracking.

Q3: What materials are used?

R3: The copper section of the terminal is made of high-purity T2 copper, while the aluminum barrel is made of high-purity 1060 aluminum. These materials offer excellent electrical conductivity and mechanical strength.

Q4: Is this product suitable for coastal or high-humidity environments?

R4: Yes. The product features electrochemical isolation and anti-corrosion treatment, effectively resisting oxidation and electrochemical corrosion in humid or coastal areas.

Q5: Can samples be provided?

R5: Yes, we provide samples for quality testing; the customer is responsible for sample costs and shipping fees.

Q6: What are the Minimum Order Quantity (MOQ) and lead time?

R6: The MOQ for in-stock items is low. Mass production is typically completed within 7 to 15 working days after receipt of the deposit.

Q7: What is the expected service life of the product?

R7: Under normal operating conditions, the service life exceeds 15 years for outdoor use and 25 years for indoor use.

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