*Supplementary equipment
2.2 Connection to the external protective earthing system
Protection against electric shock is provided by:
A: Protection by enclosures.
The power supply converting from mains to the charger, is housed in an IP 67 enclosure, and
equipped with class II transformer using double reinforced insulation.
This transformer does not normally have to be equipped with a protective earth connection.
The remaining Low Voltage power circuits are housed inside the metal structure of the lift.
B: Protection by PELV. (Protective Extra-Low Voltage)
All circuits on the lift are supplied from 24 Volts batteries and converted by SMPS’s fulfilling
PELV. The lift, including the metal structure shall, depending on national safety regulations,
be connected permanently to the protective earthing system with a minimum 18AWG /
0.75mm
2
wire.
To Next Page
