T200 User's Manual SECTION 2: SAFETY INSTRUCTIONS
PAGE 2-10
2.3.3 Safety Requirements for Cables
a) Requirements - Conductors and Cables
All cables and conductors used shall be specified as compliant with the requirements of European Standard EN 60204-1
and other known National and International Standards for the environment in which they are installed and for the voltage
and current carried.
Conductors and cables shall be specified and selected so as to be suitable for the operating conditions (e.g. voltage,
current, protection against electric shock, grouping of cables) and external influences (e.g. ambient temperature,
presence of water or corrosive substances, mechanical stress) which can exist.
Wherever possible, insulated conductors and cables which have flame-retardant properties shall be used.
Where insulated conductors and cables can constitute a fire hazard due to the propagation of a fire or the emission of
toxic or corrosive fumes (e.g. PVC), guidance from the cable supplier should be sought. In particular it is important to
maintain the integrity of circuits having a safety function (e.g. emergency stop) for as long as possible under these
conditions.
The mechanical strength and thickness of the insulation shall be such that the insulation cannot be damaged in operation
or during laying, especially for cables pulled into ducts.
The voltage drop on cables and conductors shall not exceed 5% of the nominal voltage. The current carrying capacity of
the conductors and cables is determined by both:
• the maximum allowable conductor temperature under the highest possible steady state current under normal
conditions; and
• the ultimate allowable short-time conductor temperature under short circuit conditions.
b) Wiring Practices - Connections and routing
All connections, especially those of the protective bonding circuit, shall be secured against accidental loosening.
c) Wiring Practices - Conductor and cable runs
Conductors and cables shall be run from terminal to terminal without splices or intervening joints
Where it is necessary to connect and disconnect cables and cable assemblies, sufficient extra length shall be provided for
this purpose.
The terminations of multicore cables shall be adequately supported where undue strain can be exerted on the
terminations of the conductors.
Wherever possible, the protective conductor shall be placed close to the associated live conductors in order to decrease
the impedance of the loop.
User's whose machine installations require CE-
Compliance should read Section 2.3.3.
Required for
CE-Compliance
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