Siemens TL.. Instrucciones de operaciones descargar pdf (Pagina 45)

Installation

4.3 Electrical installation

Installation of cables

Cables that can cause disruptions or are themselves vulnerable to disruption, must be moved as far apart

from each other as possible.

The resistance to errors is improved by installing the cables close to the ground potential. Therefore, you

should move these cables to corners and the ground surface.

Unused wires should be grounded at least at one end.

Low-voltage cables are divided into at least four classes. Each cable class is laid in a different way, and

these cables are bundled only with (or close to) cables of their own class. Cables of different classes

must intersect at right angles, especially when they carry sensitive, interference-prone signals.

• Class 1:

unshielded cables for ≤ 60 V DC

unshielded cables for ≤ 25 V AC

shielded cables for analog signals

shielded bus and data cables

• Class 2:

unshielded cables for > 60 V DC and ≤ 230 V DC

unshielded cables for > 25 V AC and ≤ 230 V AC

• Class 3:

unshielded cables for > 230 V AC/DC and ≤ 1000 V AC/DC

• Class 4:

unshielded cables for AC/DC > 1000 V

CAUTION

Danger of mechanical damage

The cable must be laid so that it is short-circuit-proof

The cables must be bundled (three phases in a bundle) and because of the electrodynamic forces caused by short circuit

currents, they must be secured.

It is recommended that laid cables are attached every 30 cm.

WARNING

To ensure the safe operation of the devices, they may be installed and commissioned only by qualified personnel in full

compliance with the warnings referred to in this manual.

In particular, the general and regional installation and safety regulations regarding work on dangerous voltage installations

(e.g. EN 61800-5-1) and the relevant provisions regarding the use of proper tools and personal protective measures must

be observed.

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Siemens TL.. Instrucciones de operaciones Pagina 45