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Low voltage-fused-switch disconnector system 403 Safety
B843
2.4 Dangers caused by the switching device
The possible danger sources of the switching device are outlined below. Thorough introductory ses-
sions and training for operators help minimise the danger to both people and equipment.
Carrying out regular checks on the knowledge levels and compliance with safety regulations contribu-
tes significantly to accident-free operation over the long term.
2.4.1 Danger due to moving parts
WARNING:
The switching device has moving components, some of which can be moved remotely
(electrically and/or mechanically) with significant force. Touching these parts poses a risk of personal
injury or material damage.
Before starting work, it is important to ensure that there is no danger from moving parts.
2.4.2 Danger due to electrical current / arc
WARNING:
When operating electrical switching devices, components in the immediate vicinity are
supplied with dangerous current. Touching these parts poses a risk of personal injury or material
damage.
In the case of a fault arc, extreme hazards arise (high thermal energy, pressure wave, electromagnetic
radiation, toxic / hot gases and particles).
The danger zone of the switching device may only be accessed by persons who are aware of the elec-
trical dangers thanks to specialist training, knowledge and experience and can implement the neces-
sary occupational health and safety measures.
Other people may only enter the danger zone when accompanied by the persons listed above.
2.5 Safety installations
For the protection of both personnel and the product, safety installations help prevent accidents or
material damage caused by moving parts and assemblies.
Safety installations are Insulating baffle plate (K), Cable insulating cover (L) and Flat spring (N).
The operator must ensure that trained personnel
• check all safety installations regularly.
• remove any problems on the safety installations immediately.
• secure the switching device against being switched on if not all safety installations are present and
working.