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Copper Aluminium Terminal

Used for transition connection of aluminum cable or aluminum alloy cable with copper end of electrical equipment in low voltage.

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Product Description

Introduction:

The DTL-1 is a specialized bimetallic terminal lug, a critical component in electrical systems for creating a reliable and safe connection between copper and aluminum conductors.

The DTL-1 cable lugs is not just a simple connector; it is a precision-engineered solution that ensures the long-term safety, reliability, and efficiency of electrical connections in mixed-metal environments.

Material:Al≥99.5%,CU≥99.9%

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Drawings:

Specifications:

Type	φ±0.3	D±0.2	d±0.2	L±2	L1±2	W±0.2	S±0.2
DTL-1-10	10.5	9.2	5.2	66.2	30	16	2.2
DTL-1-16	10.5	10.6	6.2	66.2	30.4	16	2.2
DTL-1-25	10.5	12.4	8	74	35	17.5	2.6
DTL-1-35	10.5	13.6	8	80	37	20	3
DTL-1-50	13	16	10	90.2	44	23	3.4
DTL-1-70	13	18	12	98.4	45	27	3.8
DTL-1-95	13	21	13.8	106.4	49.4	28	4
DTL-1-120	13	22.4	14.8	114	53.8	30	4.8
DTL-1-150	13	25	17	126	56	34	5
DTL-1-185	13	27	19	133.2	59.6	37	5.6
DTL-1-240	13	29.2	20.8	140	63	40	6
DTL-1-300	13	33.2	23.2	162	69	50	7
DTL-1-400	17	38.4	26.8	166	76	50	7.1
DTL-1-500	17	40.4	28.8	185	75	54.8	7.9
DTL-1-630	17	54.6	33	201	81	59.6	9

Primary Function and Design:

Copper aluminium cable lugs’ core purpose is to serve as a transition point, effectively joining a copper cable to an aluminum busbar, cable, or terminal point (or vice-versa). The terminal is expertly manufactured with two distinct metal sections bonded together:

Copper Section (Reddish-Brown): This terminal connector is designed to be connected to a copper conductor. It typically features a cylindrical barrel that is crimped onto the copper wire.

Aluminum Section (Silver): This end is designed for connection to aluminum. It is formed into a flat, eyelet or lug shape with a hole, allowing it to be securely bolted to a terminal, such as on a circuit breaker, transformer, or grounding busbar.

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Key Technical Advantages:

Prevention of Galvanic Corrosion: This is the most important feature. When copper and aluminum are directly connected in the presence of an electrolyte (like moisture), they form a galvanic cell, leading to rapid oxidation, increased resistance, overheating, and ultimately connection failure. The DTL-1's bimetallic interface is engineered (often through a friction-welding or diffusion-bonding process) to create a permanent, low-resistance bond that isolates the two metals from direct electrochemical contact, thereby preventing this corrosive reaction.

Reliable Performance: By providing a dedicated and optimized connection for each metal type, it ensures a stable, low-resistance electrical path, minimizing voltage drop and power loss.

Mechanical Strength: The solid construction provides excellent mechanical strength, making the connection resistant to vibration and physical stress.

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Common Applications:

DTL-1 bimetallic cable lugs are essential in various electrical installations where a transition between copper and aluminum wiring is necessary, such as:

Power Distribution Systems: Connecting aluminum utility cables to copper wiring within buildings or switchgear.

Transformer Connections: Linking aluminum transformer windings to copper busbars or cables.

Grounding Systems: Creating a connection between copper grounding electrodes and aluminum grounding conductors.

Renewable Energy Systems: Used in solar and wind farms where different conductor materials meet.

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