The wiring system task is a reliable mechanical and electrical connection to the wire today to introduce the four elements of the terminal:

A contact pressure

In the terminals, the contact force is one of the basic elements. If you do not have enough contact pressure, no matter how good the conductive material is useless. Because, if the contact force is too low to produce displacement between the wire and the conductive film, resulting in oxidation of pollution, so that the contact resistance increases and result in overheating. 2.5 Pressure Wdu wireframe components, for example, only applied to the screw with 0.8 Nm of torque, can produce up to 750 N contact force, the force size and wire cross-section has nothing. Therefore, the Weidmüller pressure wireframe to have a permanent connection without any environmental impact, the large contact area, a large contact force.

Two voltage drop

One point of contact voltage drop size is to identify the quality of the wiring Block scale. Even if the screw is subjected to a small torque, voltage drop value is still substantially lower than that required in VDE 0611 boundaries. At the same time, the applied torque changes in a wide range of voltage drop is almost constant. Thus, although the size of the torque used by different operators, but does not affect the connection quality. This is a further evidence of the Weidmüller pressure wireframe reliability.

The self-locking function

The only lasting effect of contact force on the wire makes sense. The Weidmüller pressure the wireframe with the greatest reliability in this regard. Wireframe above the pressure in the process of tighten the screws in the threaded tabs pop up, and the resulting reaction force on the screw. Due to changes in temperature caused by the wire diameter to offset the pressure wireframe elasticity of, so no need to re-tighten the screw. Pressure on the pressure on the wire wireframe in 130oC the environment mainly as a 168-hour aging test for 168 hours of vibration test, and then again 20 times the acceleration due to gravity. VDE 0611 are even more stringent test, the pull-out strength of the wire from the pressure wireframe still six times higher than to VDE 0611 specified value, the voltage drop will remain the same. This unequivocally shows the the Weidmüller pressure wireframe maintenance-free.

4 air-tightness

A variety of environmental factors, such as temperature, air humidity, etc. for many years the role of the terminals, terminals must have the ability to withstand the test of adverse environmental factors to DIN 41.64 thousand provisions of Chapter 76 by the test and practical experience has proved, even if soft wire connection without crimping the ends of the case, the pressure wire frame to