Aluminum wire connect easily

Using the advantages of aluminum cable / aluminum wires - Professional connection of aluminum wires in terminal blocks

Aluminum wire connect easily

Aluminum cable / aluminum wire as a new trend

Economic development and industrialization in most emerging countries are causing raw material prices on the world market to rise rapidly. The price ratio between copper and aluminum has risen to a factor of 1:4, which in turn makes aluminum an interesting wire material for many industries.

The ease of handling and, in particular, the laying of the up to 70 percent lighter aluminum wires / aluminum cables make customers rethink their approach, especially when it comes to wire cross-sections larger than 16 mm². When connecting such aluminum conductors in electrical connection technology, a number of general conditions must be met in order to ensure that the conductor is contacted safely and with long-term stability at the clamping point.

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CONDUCTIVITY

The electrical conductivity "kappa" applies to copper (56 m/(Ω ∗ mm²)) and aluminum (36 m/(Ω ∗ mm²)).

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PRICE

The world market price (status December 2022) between copper and aluminum.

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DENSITY

The density of copper is 8920 kg/m³ and aluminum 2700 kg/m³.

Proper connection and termination of aluminum wires

Aluminum conductor for indirect connection (by using)

- Ring cable lugs

- Press connection bolts

- Cu/Al washer (CUPAL)

Aluminum conductor for direct connection(3-steps)

- Scratching

- Greasing

- Connecting

Pretreatment and direct connection in WPD terminal blocks

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Transition from aluminum to copper

Weidmüller's WPD terminal blocks enable a simple, safe and cost-effective transition from aluminum wires or aluminum cables to copper wires within the switchgear.

For example, a supply line of the switchgear can be implemented from aluminum conductors on one side of the WPD terminal block and the further wiring on the opposite side of the terminal block with copper conductors.

The pretreatment of the aluminum conductor and the required torques can be found in the respective product data sheets.

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