4
Connection and installation
Page 23
Stud welding unit
operating manual
Date:
July 2021
ALPHA 850
07.2021 / EN
Rev.:
A
•
Transformer version: Europe standard
System voltage
400 V
Power supply fuse
T 35 A
System voltage
500 V
Power supply fuse
T 35 A
•
Transformer version: France/Norway
System voltage
230 V
400 V
Power supply fuse
T 63 A
T 35 A
When connecting to a 230 V delta circuit [ ] / 400 V star circuit [ ] the phases must
be assigned as follows and the following connection terminals must be linked:
Primary voltage
L1
L2
L3
Link
230 V
1
2
3
1 4 2 5 3 6
400 V
2
4
6
1 3 3 5
