DL/DT/DTL series connectors are common power connectors, which are widely used in power systems, power distribution systems, transformers, cable connections and other fields to meet different power transmission needs.
Why choose Chalco Aluminum, copper, copper-aluminum connecting terminals?
The production complies with the standard of the national "Execution Standard for Terminal Blocks GB-T 14315-2008".
We select excellent materials and manufacture them with advanced friction welding technology.
The Specs of aluminum, copper, copper-aluminum connecting terminals (DL, DT, DTL)
| Model | d (mm) | D (mm) | L (mm) | L1 (mm) | L2 (mm) | B (mm) |
| DL-4 | 2.5 | 5 | 45 | 24 | 15 | 12 |
| DL-6 | 3.0 | 6 | 45 | 25 | 20 | 12 |
| DL-10 | 4.5 | 9 | 55 | 30 | 20 | 15 |
| DL-16 | 5.5 | 10 | 65 | 35 | 22 | 16 |
| DL-25 | 7.0 | 12 | 70 | 35 | 25 | 19 |
| DL-35 | 8.0 | 14 | 75 | 42 | 25 | 21 |
| DL-50 | 9.0 | 16 | 80 | 42 | 27 | 23 |
| DL-70 | 11.5 | 18 | 95 | 50 | 31 | - |
| DL-95 | 13.5 | 21 | 100 | 50 | 34 | 30 |
| DL-120 | 15.0 | 23 | 110 | 55 | 37 | 34 |
| DL-150 | 16.5 | 25 | 115 | 55 | 40 | 36 |
| DL-185 | 18.5 | 27 | 125 | 60 | 43 | 40 |
| DL-240 | 21 | 31 | 130 | 60 | 46 | 45 |
| Model | d (mm) | D (mm) | L(mm) |
| DT-4 | 2.8 | 5 | 14 |
| DT-6 | 3.5 | 66 | 14 |
| DT-10 | 4.5 | 8 | 16 |
| DT-16 | 6.0 | 9 | 18 |
| DT-20 | 7.0 | 10 | 18 |
| DT-35 | 8.0 | 11 | 23 |
| DT-50 | 10 | 13 | 23 |
| DT-70 | 11 | 15 | 28 |
| DT-95 | 13 | 18 | 28 |
| DT-120 | 15 | 20 | 35 |
| DT-150 | 17 | 23 | 35 |
| DT-185 | 19 | 25 | 42 |
| DT-240 | 21 | 27 | 42 |
| Model | Main Size（mm） | |||||
| Φ | D | d | L | L1 | A | |
| DTL-16 | 8.4 | 10 | 5.5 | 70 | 32 | 16 |
| DTL-25 | 8.4 | 12 | 7 | 75 | 34 | 18 |
| DTL-35 | 10.5 | 14 | 8.5 | 85 | 40 | 20 |
| DTL-50 | 10.5 | 16 | 9.5 | 90 | 42 | 23 |
| DTL-70 | 12.5 | 18 | 12 | 102 | 47 | 26 |
| DTL-95 | 12.5 | 21 | 13 | 112 | 50 | 28 |
| DTL-120 | 14.5 | 23 | 15 | 120 | 53 | 30 |
| DTL-150 | 14.5 | 25 | 16 | 126 | 55 | 34 |
| DTL-185 | 16.5 | 27 | 18 | 133 | 58 | 37 |
| DTL-240 | 16.5 | 30 | 20 | 140 | 60 | 40 |
Chemical composition of aluminum, copper, copper-aluminum connecting terminals (DL, DT, DTL)
| Chemical composition | |||
| 1060 | T2 | ||
| Si | 0.051 | Cu+Ag | 99.98 |
| Fe | 0.2495 | Bi | 0.001 |
| Cu | 0.0165 | Sb | 0.002 |
| Mn | 0.025 | As | 0.002 |
| Mg | 0.01 | Fe | 0.001 |
| Cr | - | Pb | 0.005 |
| Zn | 0.0195 | S | 0.005 |
| Ti | 0.02 | ||
| Al | REM. | ||
The property of aluminum, copper, copper-aluminum connecting terminals (DL, DT, DTL)
| Tensile strength σb (MPa) | 60-100 |
| Elongation δ/（%） | ≥23 |
| Elongation 50mm/（%） | ≥25 |
DL series aluminum terminals are pressed by (L3) aluminum rods.
| Tensile strength σb (MPa) | ≥275 |
| Elongation δ10 (%) | ≥5 |
| Elongation δ5 (%) | ≥10 |
DT series copper terminals are pressed by (T2) copper rods.
| Tensile strength Rm (Mpa) | 128 |
| Yield Strength Rp0.2 (Mpa) | 271 |
| Elongation (%) A | 31.8 |
| Hardness (HB) | 68/25 |
DTL series copper-aluminum terminals use aluminum as L3 and copper as T2.
Characteristics of DL/DT/DTL (aluminum, copper, copper-aluminum) series connectors
The DL in the DL terminal stands for aluminum material. Aluminum is lightweight, conductive, and corrosion-resistant, making it suitable for connections in power transmission and distribution systems.
DT in DT terminal stands for copper material. Copper has excellent electrical and thermal conductivity and is suitable for high power transmission and high temperature environments.
The DTL in the DTL series connectors stands for copper-aluminum composite material. The copper-aluminum composite material combines the advantages of copper and aluminum, has high electrical conductivity and low resistance, and also has good corrosion resistance.
High reliability: DL/DT/DTL series connectors adopt reliable connection design to ensure the stability and safety of power transmission.
Easy installation: these connectors are usually threaded or plug-in connections for easy installation and removal.
Wide application: DL/DT/DTL series connectors are widely used in power systems, power distribution systems, transformers, cable connections and other fields to meet different power transmission needs.
It should be noted that the specific characteristics of DL/DT/DTL series connectors may vary with different manufacturers and specifications, and the above characteristics are only general overviews. When selecting and using joints, the selection should be based on specific application requirements and relevant standards.
Uses of DL/DT/DTL (aluminum, copper, copper-aluminum) connecting terminals
DL/DT/DTL series connectors (aluminum, copper, copper-aluminum) are widely used in power transmission and distribution systems, and their specific uses include the following aspects.
Cable connection: DL/DT/DTL connectors can be used to connect cables of different specifications to realize power transmission and distribution.
Transformer connection: DL/DT/DTL connectors can be used to connect the input and output lines of the transformer to ensure the effective transmission of electric energy.
Power distribution equipment connection: DL/DT/DTL connectors can be used to connect power distribution equipment, such as switchgear, circuit breakers, load switches, etc., to achieve power distribution and control.
Overhead line connection: DL/DT/DTL connectors can be used to connect overhead transmission lines to ensure stable power transmission.
Underground cable connection: DL/DT/DTL connectors can be used to connect cables buried underground to realize underground transmission of power.
Power generation equipment connection: DL/DT/DTL connectors can be used to connect power generation equipment, such as generators, solar panels, etc., to connect the power generated by power generation to the power system.
Copper-aluminum transition wire noses are widely used in the industry. They are made of two materials, copper and aluminum, and are cheaper than copper noses. It is processed by friction welding, which is not easy to break and has strong electrical conductivity. Some cables cannot be connected directly with copper lugs when connecting, so copper and aluminum terminals are needed to achieve the transition connection.
Generally, copper lugs are commonly used when connecting copper wires or copper bars and other equipment. If the connected cable aluminum core cable is connected to the copper bar, copper-aluminum transition wire lugs are needed, which can improve the electrical reliability of the connection. it is more secure to use.
DL/DT/DTL series connectors have different material options, such as aluminum, copper, copper-aluminum composite materials, and the appropriate connector material can be selected according to specific application requirements. These joints have good electrical conductivity, corrosion resistance and reliability, ensuring the normal operation and safety of the power system.
Items for purchasing DL/DT/DTL (aluminum, copper, copper-aluminum) connecting terminals
Material selection: DL/DT/DTL series joints are available in three materials: aluminum, copper and copper-aluminum. According to specific application scenarios and requirements, select suitable materials. Aluminum joints have the characteristics of light weight and good electrical conductivity, and are suitable for general low-voltage electrical connections; copper joints have better electrical conductivity, and are suitable for high-voltage or high-current connections; copper-aluminum joints combine the advantages of copper and aluminum, and are suitable for copper, the connection of two conductors of aluminum.
Specifications and sizes: DL/DT/DTL series connectors are available in various specifications and sizes, make sure to choose the correct specifications and sizes that match the cable or wire. The size of the connector should match the outer diameter of the cable or wire to ensure a secure connection and good electrical performance.
Electrical performance: the electrical performance of the connector is a very important consideration. Make sure the connector has good electrical conductivity and low resistance to ensure the efficiency and stability of current transmission. In addition, it is also necessary to pay attention to the withstand voltage and insulation performance of the connector to ensure that it can operate safely within the required voltage range.
Quality and certification: when purchasing, you should choose a high-quality connector product to ensure its reliable quality. You can choose a supplier or manufacturer with good reputation and experience, and check whether its products have passed relevant certification standards, such as International Electrotechnical Commission (IEC) standards or other industry standards.
Installation and connection method: understand the installation and connection method of terminal blocks to ensure correct installation and connection. Different types of joints may have different connection methods, such as crimping, threading, clamping, etc. Make sure you choose a terminal block that is compatible with the desired connection method and has features that facilitate installation.
Environmental adaptability: according to the use environment of the terminal block, select products with corresponding environmental adaptability. For example, if the terminal block will be used in a wet or corrosive environment, you can choose a connector with waterproof, anti-corrosion coating or anti-corrosion material.
Cost and budget: finally, consider the cost of terminal blocks against your budget. Make sure to select products within a reasonable price range on the premise of quality and performance requirements.
