Electrical Connection - Bosch PSU 5000 Series Instructions For Assembly And Operation Manual

11 Electrical connection

1070 078 224- -108
PSU 5000 / PSG 3000
Instructions for Assembly and Operation
The MF welding inverter is connected to the supplying mains.
WARNING!
!
-- Working with system voltage may result in death, severe bodily injury or consi-
derable damage to property unless the appropriate precautionary measures
are taken.
Therefore, you should carefully read the safety instructions at the beginning of
this manual where you will find a description of a number of features to be strictly
observed! The system voltage is associated with considerable dangers!
-- The possible consequences of inappropriate handling include death or most se-
vere 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!
The equipment must be appropriately fused at the mains side!
-- Danger of life through electrical voltage!
The protective earth for the negative pole of the PSG can be interrupted by
opening the protective earth conductor connection at the PSG. In order to pro-
tect the operating personnel against dangerous electrical voltages in the event
of a possible break--down of the primary side of the transformer to the second-
ary side, in this case, a suitable protective measure is to be provided in accor-
dance with EN 60 204 Part 1 (e.g. by earthing the electrode gun)! In addition, the
transformer must be marked accordingly (cf. also dimension drawing of the
transformer, Section 10.2).
-- Danger of life through electrical voltage!
The PSU 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 protective earth-
ing circuit must be verified in accordance with EN 60204 Part 1.
-- Danger of life through electrical voltage!
When working at the mains system or making connections involving the welding
plant it must be ensured that the inverter has been safely isolated from the sup-
ply for at least 5 minutes (capacitor discharge time).
-- Suitable insulated tools must be used for all electrical connection work!
ATTENTION!
Compatibility with residual--current devices to EN 50178:
!
If a residual--current device is used at the mains side of the inverter to protect per-
sons in the event of direct or indirect contact, a type B device must be used. The
residual--current device must additionally be capable of safely detecting a possible
residual current with a frequency of 1 kHz / 1.2 kHz.
Electrical
connection
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