1
Introduction
Page 7
Stud welding unit
operating manual
Date:
July 2021
ALPHA 850
07.2021 / EN
Rev.:
A
1.8 Technical data
Device designation/type:
ALPHA 850 welding device
Version:
Europe standard
Input voltage:
3 ~ 400 V (± 10%); others on request
Grid frequency:
50/60 Hz
Power fuse:
per phase 35 A (at 400 V)
Connected load:
68 kVA
Output power:
max. 36 kW
No-load voltage:
96 V
Duty cycle:
3%
Welding current range:
100 A – 850 A
Welding time range:
Short cycle: 10 ms – 100 ms
Drawn arc: 100 ms – 1000 ms
Fuse elements:
Supply to PCB control:
F1: 1 A/250 V (slow)
Supply 18 VAC:
F2: 4 A/250 V (slow)
Supply to coil circuit:
F3: 4 A/50 V (slow)
Fan:
F4: 3.15 mA/250 V (slow)
Protection type:
IP 23
Protection class:
I
Storage temperature:
-25°C to +55°C
Operating temperature:
0°C to +40°C
Cooling type:
Fan (AF)
Relative humidity:
0% to 50% at 40°C
0% to 90% at 20°C
Dimensions (L x W x H):
555 mm × 335 mm × 415 mm
Weight:
64 kg
Power plug:
CEE; (3L+PE)
Power connection cable:
H07RN-F
Length:
3 m
Cable diameter:
4 × 6.0 mm
2
Minimum bending radius:
90mm
