| The LHF 400/630/800 rectifiers are designed
to meet the highest expectations in terms of robustness
and operational performance and reliability. The alu/zinc
sheet-metal casing is corrosion-resistant and the transformers
and switches have been specially chosen to withstand the
toughest conditions. Dynamic characteristics, current range,
''anti-stick'' function and power capacity make the LHF
a tool for contractors and fabricators who require top performance.
LHFs are also good for TIG scratch starts or with TIG add-on
units. The 630 and 800 have been optimized for carbon arc
gouging.
Delivery includes
Two OKC welding cable connectors.
| |
LHF 400 |
LHF 630 |
LHF 800 |
| External dimensions, LxWxH, mm |
1300x750x700 |
1300x750x700 |
1300x750x700 |
| Weight, kg |
195 |
235 |
275 |
| Enclosure class, protection |
IP 23 |
IP 23 |
IP 23 |
| Mains supply, V/Hz |
400/50 |
400/50 |
400/50 |
| Fuse, slow, A |
25 |
50 |
63 |
| Mains cable, Ø mm2 |
4x4 |
4x10 |
4x10 |
| Max output at 35% duty cycle, A |
400 |
630 |
800 |
| Max output at 60% duty cycle, A |
315 |
500 |
630 |
| Max output at 100% duty cycle, A |
250 |
400 |
500 |
| Active power, P kW |
10.3 |
17.9 |
26.8 |
| Apparent power, S kVA |
13.8 |
26.3 |
34.8 |
| No load power, W |
400 |
600 |
650 |
| Open circuit voltage, V |
80-87 |
65-72 |
69-76 |
| Power factor at max current |
0.95 |
0.90 |
0.80 |
| Efficiency at max current |
71 |
75 |
79 |
| Setting range, A |
8-400 |
8-630 |
8-800 |
| Choke taps, no:s |
No |
No |
No |
| Current/Voltage/Frequency, 3 ph A/V/Hz |
21/380/50 |
40/380/50 |
53/380/50 |
|
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