Planning and Installation Guidelines 11
Planning and
Installation Guidelines
Technical Description
Wireless Proximity Switches / Issue: 03.2005
V 6
1.5 Installation of the primary loop cables
Normally, the primary loops are made of only one winding of the primary loop cable. Only for small
primary loops with a size of 1 m x 1 m two windings of the primary loop cable are necessary. The
windings can be installed without any distance to each other.
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The primary loop cables can be laid open or in armored plastic conduits, plastic cable ducts (open
or closed types), etc.
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The primary loop cable parts of the loop itself must not be laid in armored steel conduits or similar
electrically conductive materials.
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For the installation of the primary loops glas fibre reinforced plastic conduits may be used
conveniently due to their self supporting property at large lenght
Fig. 1.7: Normally, the primary loop cable is laid in one winding, as shown on the left.
Two windings are only necessary for small primary loops (1000 mm x 1000 mm to 1000 mm x 1200 mm).
Primary loop cable
Primary loop cable
2CDC352019F0003.EPS