Component Set Basic Electrical Circuits
1 General prerequisites for operating the devices
General requirements for safe operation of the devices:
•
National regulations for operating electrical systems and equipment must be observed in commercial
and industrial facilities.
•
The laboratory or classroom must be overseen by a supervisor.
–
A supervisor is a qualified electrician or a person who has been trained
in electrical engineering, knows the respective safety requirements and safety regulations and
whose training has been documented accordingly.
The laboratory or the classroom must be equipped with the following devices:
•
An emergency-off device must be provided.
–
At least one emergency-off device must be located inside and one outside the laboratory or
the classroom.
•
The laboratory or classroom must be secured so that operating voltage and compressed air supply
cannot be activated by any unauthorized persons.
–
e. g. a key switch
–
e. g. lockable shut off valves
•
The laboratory or classroom must be protected by residual current devices (RCDs).
–
Type B residual current circuit breakers with residual current ≤ 30 mA.
•
The laboratory or classroom must be protected by overcurrent protection devices.
–
Fuses or circuit breakers
•
No damaged or defective devices may be used.
–
Damaged devices must be barred from further use and removed from the laboratory or classroom.
–
Damaged connecting cables, pneumatic tubing and hydraulic hoses represent a
safety risk and must be removed from the laboratory or classroom.
18
© Festo Didactic 8111817