Bimetallic Cable Lugs – ADTL2

Code: N/A
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Description

Bimetallic Lugs are designed to join two different types of metals, typically aluminium and copper, in electrical installations. These lugs are used to establish a secure connection between cables and electrical equipment, such as circuit breakers, transformers, or switchgear.

The use of bimetallic lugs is essential due to the incompatibility of aluminium and copper when they are in direct contact. When these metals come into contact, a galvanic corrosion process occurs due to the potential difference in the metals. This corrosion can lead to increased electrical resistance, causing overheating, potential equipment failure, and even fire hazards.

To avoid these problems, Axis Bimetallic Lugs are made with two distinct sections:

  1. Aluminium Barrel: The aluminium barrel is designed to connect to the aluminium conductor. Aluminium is lightweight, highly conductive, and more affordable compared to copper, which is why it’s widely used in power transmission lines and electrical installations.
  2. Copper Palm: The copper palm is designed to connect to the copper conductor or equipment terminal. Copper has excellent electrical conductivity, mechanical strength, and corrosion resistance, making it an ideal choice for electrical connections.

The two sections are joined together using a friction welding process, which creates a strong bond between the two metals without introducing any additional materials that could compromise the electrical or mechanical properties of the connection.

Applications of Bimetallic Lugs

    1. Electrical power distribution: Bimetallic lugs are used in power transmission and distribution systems to connect aluminium conductors to copper equipment terminals in substations, transformers, and switchgear. They ensure reliable and efficient energy transfer between different components of the electrical grid.
    2. Solar photovoltaic (PV) systems: Bimetallic lugs are utilized in combiner boxes of solar installations, where they connect aluminum conductors from multiple solar panels to copper equipment terminals or busbars. This helps to consolidate the output from the solar panels into a single electrical output that is then connected to the inverter. By using bimetallic lugs in combiner boxes, the risk of galvanic corrosion, increased electrical resistance, and overheating is minimized, ensuring the safe and efficient operation of the solar PV system.
    3. Industrial electrical installations: In manufacturing plants, factories, and other industrial facilities, bimetallic lugs connect aluminium cables to copper busbars or terminal blocks, ensuring proper electrical connections for machines and control systems.
    4. Commercial buildings: Bimetallic lugs are employed in commercial buildings such as offices, shopping centres, and hotels to connect aluminium conductors in the main electrical panels to copper branch circuits or equipment terminals.
    5. Residential electrical systems: In residential buildings, bimetallic lugs can be used to connect aluminium service entrance conductors to copper terminals in the main distribution panel, ensuring a secure and safe connection between different parts of the home electrical system.
    6. Renewable energy systems: In solar or wind energy installations, bimetallic lugs are often used to connect aluminium conductors from the power generation equipment to copper conductors in inverters, transformers, or other system components.
    7. Electric vehicle charging stations: Bimetallic lugs can be used in electric vehicle charging stations to connect aluminium conductors in charging cables to copper equipment terminals or busbars, ensuring proper electrical connections for efficient and safe charging.
    8. Telecommunications: In telecommunications infrastructure, bimetallic lugs can be used to connect aluminium grounding conductors to copper grounding bars or equipment terminals, ensuring proper grounding and reducing interference.

 

It is crucial to select the appropriate type and size of bimetallic lug for each specific application, considering factors such as conductor size, insulation type, temperature rating, and environmental conditions. Proper installation and maintenance practices are also essential to ensure the safe and reliable operation of electrical systems using bimetallic lugs.

 

Cable Size mm2 Dimensions in mm Code
∅E ∅d ∅D ∅W S L1 L
16 8.5 5.5 16 24 4 47 90 ADTL21608
10.5 ADTL21610
13 ADTL21612
25 8.5 6.5 16 24 4 47 90 ADTL22508
10.5 ADTL22510
13 ADTL22512
35 8.5 8.5 16 24 4 47 90 ADTL23508
10.5 ADTL23510
13 ADTL23512
50 8.5 9.5 20 24 5 50 98 ADTL25008
10.5 ADTL25010
13 ADTL25012
70 8.5 11 20 24 5 50 98 ADTL27008
10.5 ADTL27010
13 ADTL27012
95 8.5 12.5 20 24 5 50 98 ADTL29508
10.5 ADTL29510
13 ADTL29512
120 10.5 15 25 30 6 60 117 ADTL212010
13 ADTL212012
17 35 6.5 124 ADTL212016
150 10.5 16 25 30 6 60 117 ADTL215010
13 ADTL215012
17 35 6.5 124 ADTL215016
185 10.5 17 32 30 6 60 117 ADTL218510
13 ADTL218512
17 35 6.5 124 ADTL218516
240 10.5 20 32 30 6 60 117 ADTL224010
13 ADTL224012
17 35 6.5 124 ADTL224016
300 10.5 23.3 34 30 6 60 117 ADTL230010
13 ADTL230012
17 36 7 62 130 ADTL230016
400 13 26 40 36 8 90 160 ADTL240012
17 ADTL240016
21 ADTL240020
BL ADTL2400BL
500 17 29 47 SQ 60 x 60 10 94 200 ADTL250016SQ
21 ADTL250020SQ
BL ADTL2500BLSQ
17 36 8 90 160 ADTL250016
21 ADTL250020
ADTL2500BL
630 17 32.5 47 SQ 60 x 60 10 94 200 ADTL263016SQ
21 ADTL263020SQ
BL ADTL2630BLSQ
17 50 8 90 160 ADTL263016
21 ADTL263020
BL ADTL2630BL