With heating cables installed pavements, foot-bridges and other ground surfaces can be kept free from snow and ice even during the cold period of the year.
The cables can be applied in many a different ways. The most common way is to apply the cable in a bed of sand, which is coated with cement plates, ground bricks or asphalt. You can also apply the heating cables on concrete, which is then covered with a surface coating of some kind. when the construction is made of concrete and is cast in one phase the heating cables are applied in the concrete by lashing them at the upper edge of the armouring.
Power required: Depending on the geographical position of the application, the local climate and the required operation of the required power varies between 250 – 400 W/m².
If you choose a high power the melting off will ge a faster start.
Y/D-change-over switch: If the application is dimensioned for 380V operating voltage you can obtain a lower basic power (1/3) in the Y-position with a Y/D-change-over switch.
Limitations in power depending on the type of cable:
|Type of cable||Concrete W/m||Asphalt (W/m)||Sand (W/m)|