JUMO 14597 safetyM STB/STW Ex - Safety Temperature Limiter and Safety Temperature Monitor Operating Manual - Manual (Page 22)

4 Electrical connection
2013-04-01 16
4 Electrical connection
4.1 Installation notes
a
Checking to see if the safety temperature limiter is installed in a manner appropriate to the application (temperature mea-
surement) and that it is operated within the admissible plant parameters.
a
The device is intended to be installed in switch cabinets, machines, or plants.
Ensure that the customer's fuse rating does not exceed 20 A.
a
Isolate the device on all poles prior to starting service or repair work.
a
All incoming and outgoing lines without a connection to the mains supply must be laid with shielded and twisted cables.
Connect the screen on the device to ground.
a
Do not lay the input and output cables close to components or lines through which current is flowing.
a
Do not connect any additional loads the screw terminals for the voltage supply of the device supply.
a
Both the choice of cable material for the installation as well as the electrical connection of the device must conform to
the local requirements of VDE 0100 "Regulations on the Installation of Power Circuits with Nominal Voltages below
1000 V" or the appropriate regulations for the country.
a
Suitable measures must be taken to protect the relay circuit.
The maximum contact rating is 230 V/3 A (ohmic load).
a
The electromagnetic compatibility conforms to the standards and regulations cited in the technical data.
v
Chapter 9 "Technical data"
a
For startup we recommend that a trial run of the plant up to the temperature shutoff at the set limit is carried out.
V
Hybrid mixtures:
If a dangerous atmosphere could occur at the mounting site – an atmosphere that is potentially explosive due to a
mixture of gases, steam, or mist and at the same time through combustible dusts – then the safety-related charac-
teristic parameters of the gases, steam, or mist and the combustible dusts can change.
In such cases the suitability of the intended device is to be checked by an appropriate office.