Bosch L 309 Series, Technical Information

Page: 11 / 36

Safety instructions
Type L 309
Power Supply Module
I−6
1070 078 131-104 (00.05) GB
Electrical connection
The power supply modules are connected to the supplying mains.
WARNING!
- The mains voltage is associated with many dangers!
The possible consequences of inappropriate handling include death or most
severe injuries (personal injuries) and damage to property.
For this reason, the electrical connection must always be made by an electrical
expert in compliance with the valid safety regulations, the mains voltage and the
maximum current consumption of the individual units of the equipment.
The mains voltage must be identical with the nominal voltage given on the
nameplate of the product!
Appropriate electrical fusing equipment must be available on the mains side!
- Danger of life through electrical voltage!
Changing the system voltage of the power supply module, if necessary, may
only be performed when the system is de-energized. In any case, suitable insu-
lated tools should be used for this purpose.
- Danger of life through electrical voltage!
The power supply modules must be connected to the protective earthing (PE)
circuit of the system. Please ensure that a sufficient conductor cross-section is
used for wiring the protective conductor. The electrical continuity of the protec-
tive earthing circuit must be verified in accordance with EN 60204 Part 1.
NOTE
We recommend operating the complete welding system on a separate welding
grid. For smaller welding powers, smoothing reactors may be used to achieve cer-
tain improvements.
!