Advantages And Benefits Of Medium- -Frequency Welding - Bosch PSU 5000 Series Instructions For Assembly And Operation Manual

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Advantages and benefits of medium- -frequency welding

50 Hz
20 ms
Frequency
1000 Hz
1 ms
1070 078 224--- 108
PSU 5000 / PSG 3000
Instructions for Assembly and Operation
The Bosch medium--frequency welding system uses direct current as the welding
current. As a result, the welding process can be controlled more thoroughly and
faster and becomes more steady. The "good" welding range becomes larger.
The medium--frequency welding current is clocked at 1 kHz. Current control is defi-
nitely faster and more accurate than with 50 Hz welding systems.
Comparison of 50 Hz and medium- -frequency welding
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` A direct current flows in the secondary welding circuit of the transformer. As a
result, the inductive resistance of the secondary window loses its influence on
the welding current with different immersion depths of the electrode gun into the
workpiece.
` The weight of the welding transformer is reduced. Due to the higher operating
frequency, the iron content required as well as the volume are reduced while the
performance data is maintained.
` The more steady welding current without any gaps and the possibility of weld
time variation in ms intervals allow for the metered application of energy to the
spot weld and a steady growth of the spot.
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Inverter out-
put voltage
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Advantages
Benefits
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Welding current
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