EL3060 CONTINUOUS GAS ANALYZERS | OI/EL3060-EN REV. A 11
Information for the installation, maintenance and repair of
electrical installations in hazardous areas
Installation to IEC/EN 60079-14 (VDE 0165 Part 1)
The electrical apparatus must be installed according to IEC/EN 60079-14
(VDE 0165 Part 1) "Electric Apparatuses for Potentially Explosive Gas At-
mospheres" Part 14: Electrical equipment in hazardous areas".
Equipotential bonding
With respect to the equipotential bonding, the requirements of
IEC/EN 60079-14 and DIN VDE 0100 Part 410 "Protection against electric
shock" and part 540 "Earthing, PE conductors, equipotential bonding con-
ductors" must be complied with.
Electrostatic charging
Electrostatic charging must be avoided. In this respect, the trade associa-
tion regulations for the "Avoidance of ignition hazards due to electrostatic
charges" (BGR 132) must be complied with.
Monitoring and testing
Electrical equipment in hazardous areas must be monitored for its correct
condition. It must be checked by a qualified electrician as required, or at
least every three years, unless it is permanently monitored by a responsible
engineer.
Carrying out work on electrical installations
Electrical installations in hazardous areas must be disconnected from the
power supply before any maintenance work is carried out on them. The iso-
lation point must be provided with a suitable warning sign e.g. "Do not
switch on - explosion hazard".
This does not apply to apparatus which may be opened under normal oper-
ating conditions, e.g. recording instruments, or for which it is expressly
noted in the type examination certificate.
Carrying out work on intrinsically safe circuits
Work may also be carried out under voltage on intrinsically safe circuits in
hazardous areas.
However, the electrical data of the relevant test equipment (inductance,
capacitance, current value and voltage values) must be considered.
Particular attention is required when carrying out work on intrinsically safe
circuits, which have been installed in conjunction with zone 0.
Explosion hazard
The explosion hazard must be eliminated before carrying out any repair
work.
Qualified personnel
Repair work may only be carried out by qualified personnel.
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