JUMO 602021 Panel-Mounted Thermostat EM Series Up to 500C Operating Manual - Manual (Page 18)

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4 Installation
4.1 Regulations and notes
4.2 Electrical connection
■ Terminals and connections are suitable for internal conductors
■ The connection is suitable for fixed wiring.
■ Cable entry without strain relief
■ The electrical connection must only be carried out by qualified personnel.
■ The choice of cable, the installation and the electrical connection must
conform to the requirements of VDE 0100 “Regulations on the Installation
of Power Circuits with Nominal Voltages below 1000 V” or the appropriate
local regulations.
■ If contact with live parts is possible while working on the instrument, it must
be completely disconnected from the electrical supply.
■ Earth the instrument at the PE terminal to the protective earth conductor.
This cable must have at least the same cross-section as used for the supply
cables. Earthing cables must be wired in a star configuration to a common
earth point that is connected to the protective earth conductor of the
electrical supply. Do not loop earthing cables, i.e. do not run them from one
instrument to another.
■ Apart from faulty installation, incorrect settings on the thermostat may also
affect the proper functioning of the subsequent process or lead to damage.
Setting up must therefore be restricted to qualified personnel. Please
observe the relevant safety regulations for such matters.
■ The thermostat conforms to Protection Class I.
Capillary tube has no protective conductor function!
With respect to the probe and capillary, the user himself is responsible for
taking the necessary protective measures against electric shock.