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| Items 7900-7902-7903
- Portable spot welders 2-6 kVA
PORTABLE SPOT WELDERS - ITEMS 7900-7902-7903 - 2 TO 6 kVA AT 50%
HAND OPERATED SPOT GUN ITEM 7900 - 2 kVA
- Light and proved spot gun for car body repair.
- Synchronous built-in electronic timer with SCR from 2 to 65 cycles.
- Compensation circuit starts the timer only when there is a proper passage of current, which enables to perform on oxidised sheets, on surfaces with paint residues or on black sheets.
- Force adjustment with scale in daN.
- Additional arm couplings to provide larger opening between arms.
- All transformer are coated with F class insulation material that does not dry out and become brittle. Test are made using 4000 volts.
- Supplied complete with 125 mm arms.
- Large choice of arms and electrodes
HAND OPERATED SPOT GUN ITEM 7902 - 2.5 KVA
- Versatile portable spot welder for auto body repair shops and maintenance shops.
- Synchronous built-in electronic timer with SCR from 2 to 65 cycles.
- Compensation circuit starts the timer only when there is a proper passage of current, which enables to perform on oxidised sheets, on surfaces with paint residues or on black sheets.
- Current control with phase shift adjustment to carry out difficult welds, on very thin thickness, on rods with reduced diameter, on stainless steel sheet and similar.
- Force adjustment with scale in daN.
- Additional arm couplings to provide larger opening between arms.
- All transformer are coated with F class insulation material. Test are made using 4000 volts.
- Supplied complete with 125 mm arms.
- Large choice of arms and electrodes.
- Pulsation weld time control available (P version).
WATER COOLED PORTABLE SPOT GUN ITEM 7903 - 6 KVA
- For high operating rate works in car body repair and light production works in Industry.
- Fully water-cooled portable spot gun to be used with arms item 7512 - 7513 - 7514 - 7515 on request.
- Versatile portable spot welder for auto body repair shops and maintenance shops.
- Synchronous built-in electronic timer with SCR from 2 to 65 cycles.
- Compensation circuit starts the timer only when there is a proper passage of current, which enables to perform on oxidised sheets, on surfaces with paint residues or on black sheets.
- Current control with phase shift adjustment to carry out difficult welds, on very thin thickness, on rods with reduced diameter, on stainless steel sheet and similar.
- Force adjustment with scale in daN.
- Additional arm couplings to provide larger opening between arms.
- All transformer are coated with F class insulation material. Test are made using 4000 volts.
- Large choice of arms and electrodes.
- Pulsation weld time control available (P version).
TECHNICAL DATA
| ITEM |
7900 |
7902 |
7903 |
| Synchronous timer with SCR |
• |
• |
• |
| Time adjustment |
cycles |
2-65 |
2-65 |
2-65 |
| Current adjustment 40-100% |
- |
• |
• |
| Cooling |
Air |
Air |
Water |
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| Supply voltage 50Hz * |
V |
400 |
400 |
400 |
| Nominal power at 50% |
kVA |
2 |
2.5 |
6 |
| Maximum welding power |
kVA |
13 |
16 |
16 |
Short circuit current
with arms L= |
kA
mm |
7.2
125 |
8.2
125 |
8.2
125 |
| Thermal current 100% |
A |
610 |
700 |
1700 |
| No load secondary voltage |
V |
2.3 |
2.5 |
2.5 |
| Insulation class |
F |
F |
F |
| Cables section for L<15 m |
mm2 |
2.5 |
2.5 |
2.5 |
| Delayed fuses |
A |
16 |
16 |
16 |
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| Standard arms throat depth L |
mm |
125 |
125 |
- |
Max. electrode force
with arms L= |
daN
mm |
120
125 |
120
125 |
120
125 |
| Arms gap |
mm |
96 |
94 |
94 |
Max. electrodes stroke
with arms L= |
mm
mm |
55
125 |
55
125 |
70
150 |
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| Water cooling |
l/min |
2.5 |
3.7 |
3.7 |
| Water max. pressure |
bar |
- |
- |
2.5 |
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| Aerial noise produced |
dB(A) |
< 70 |
< 70 |
< 70 |
| Level of vibrations |
m/s2 |
< 2.5 |
< 2.5 |
< 2.5 |
| Measure conditions |
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| welding time |
cycles |
14 |
14 |
20 |
| welding current |
kA |
5 |
5 |
6 |
| working rating in welds/min |
2 |
2 |
6 |
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| Mains cable length |
m |
3.8 |
3.8 |
3.8 |
| Net weight with arms 125 mm |
kg |
10.5 |
11 |
- |
| Net weight with arms 150 mm |
kg |
- |
- |
12 |
| Net weight with arms 500 mm |
kg |
13 |
13.5 |
13.6 |
* Different voltages and frequencies on request
These welders have been designed to be used for a professional purpose in industrial environments. If the welder is used on public low voltage network which supplies buildings used for domestic purposes, version B should be ordered.
Specifications subject to change without notice.
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