Page 10 - dehn-catalogue-safety-equipment_0

Working According to The Five Safety Rules

When working in and on electrical installations, the following five safety
rules must be observed to prevent electrical accidents:

Five safety rules:

1. Disconnect completely
The electrical installation must be disconnected from live parts on all
poles.

2. Secure against re-connection
Re-connection must be reliably prevented to ensure that an installation
where work is in progress is not accidentally re-connected.
This is achieved, for example, by replacing the unscrewed fuses in
low-voltage installations by lockable lock-out devices.

3. Verify that the installation is dead
Suitable measuring / test equipment such as voltage detectors must be
used to verify on all poles that the installation is dead.

4. Carry out earthing and short-circuiting
After verifying that the installation is dead, the cables and the earthing
system are connected to short-circuit-proof earthing and short-circuiting
devices. It must be observed that the relevant parts must be earthed
before they are short-circuited.

5. Provide protection against adjacent live parts
According to the five safety rules, adjacent parts are parts located in the
vicinity zone. If parts of an electrical installation in the vicinity of the
work location cannot be disconnected, additional precautions must be
taken before work starts as is the case with work in the vicinity of live
parts.

8