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HERO 23D / Hero 23 / SF 23 Pro
Contents of BGV A3: The test as per BGV A3 is divided into a visual and a metrological test.
Visual inspection:
- Protective conductors (protection class I )
- Insulating parts
- Housing
- Connecting cables
- Typeplate
- Machine-specifi c components
Metrological test:
- Short-circuit test
- Protective conductor resistance (RSL)
- Equivalent leakage current (IEA)
- Insulation resistance (Riso)
- Functional test
Attention!
If one of the above-specifi ed criteria cannot be fulfi lled, then the test is
considered a failure.
If the customer refuses the necessary repair, he must be informed in writing to this eff ect. Clear reference must
be made to the fact that safe operation of the system cannot be assured. This must be counter-signed by the
operating company.
You must fulfi l this obligation as you, as an expert, will be required to produce evidence in the event of dama-
ge.
1.5
FIVE SAFETY RULES
The Five Safety Rules are more than just rules. They are the precondition for working on electrical systems and appliances. Please
take these rules seriously - they are essential for your safety.
Isolation
Isolation means all-pole disconnection of a system from live parts.
All live cables must be disconnected at all poles at the place of work before starting work. This can be done by means of main
switches, expert removal of fuses, disconnection of plug connectors etc.
Protecting against restarting
In order to prevent inadvertent restarting of a system on which work is being carried out, restarting must be prevented reliably
and safely. For example the unscrewed fuse elements can be replaced with lockable disabling elements or circuit-breakers can be
masked with adhesive fi lm. A "Please do not switch on - work in progress" sign can also be affi xed. For appliances which are con-
nected to the network by a plug connector, it is suffi cient to store the unplugged connector on the machine in such a way that it
cannot be mixed up with another connector. In addition, the connector must always be kept in the worker's immediate vicinity.
Verifi cation of safe isolation from the supply
Verifi cation of safe isolation from the supply in low-voltage networks, i.e. systems with operating voltages below 1000 V, must
only be carried out using devices or equipment suitable for this purpose. A two-pole measuring instrument must be used. The
voltage detectors used must comply with the respective rated voltage and must be tested before and after verifi cation of safe
isolation from the supply. I.e. the function of the detectors must be tested on a reliable live source.
GB
