Page 9 - Contactors_Catalogue

ABB MOTOR CONTROL AND PROTECTION FOR ROLLING STOCK APPLICATIONS 1/7
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Freedom of movement

Even under the most extreme conditions

Always on the go in heat, cold, humidity – the environmental conditions for rolling

stock are usually much more extreme than those for industrial facilities. All rolling
stock products are tested and documented on the basis of safety standards.

Climatic conditions Mechanical conditions
A key factor is the changing climatic conditions. All devices Resistance to shock and vibrations is essential. All the cable
used in rolling stock must prove that they can continue to connections must be completely tight, and no screw connec-
perform when there are major temperature variations or a tion may slacken due to vibrations. The vibration resistant
rapid temperature increase. Humidity limit values set high Push-in Spring terminals, as offered by ABB are highly effica-
standards, so that no failures occur, particularly in tunnels. cious here.

Electrical conditions Easy Connect technology Push-in Spring terminals
Voltage variations are common in rail travel. They range Several types of terminals are available to connect cables
from roughly -30 % to +25 % of the rated voltage and can be with standard ferrules or ring tongue ferrules in regards
the cause of major damage. All the electrical components with material design requirements.
used in the train must provide prior proof that they can work In case of standard ferrule use, Push-in Spring terminals
safely within this range. 2-in-1 connection allows to use ferruled and rigid cables
However, interference emissions from cables or radiation (Push-in mode) or cables without ferrule (Spring mode)
can also impair the function of the electronic devices. Before in the same terminal. In Push-in mode, cables can be inserted
the devices can be used in rail applications, they must, by just simply pushing them in by hand.
among other things, prove their electromagnetic compati- For de-wiring, only one screwdriver size is needed for the
bility according to the testing and measuring principles, to entire range. No twisting or turning is required avoiding
show that they do not cause any high frequency fault above damages to the terminals and to your installation as a whole.
a specified value. Push-in Spring terminals are completely secure, making your
equipment the perfect solution for environments with high
levels of vibrations.