PORTABLE SPOT WELDERS - ITEMS 7900-7902-7903 - 2 TO 6 kVA AT 50% 

HAND OPERATED SPOT GUN ITEM 7900 - 2 kVA
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bullet Light and proved spot gun for car body repair.
bullet Synchronous built-in electronic timer with SCR from 2 to 65 cycles.
bullet 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.
bullet Force adjustment with scale in daN.
bullet Additional arm couplings to provide larger opening between arms.
bullet All transformer are coated with F class insulation material that does not dry out and become brittle. Test are made using 4000 volts.
bullet Supplied complete with 125 mm arms.
bullet Large choice of arms and electrodes
 

HAND OPERATED SPOT GUN ITEM 7902 - 2.5 KVA
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bullet Versatile portable spot welder for auto body repair shops and maintenance shops.
bullet Synchronous built-in electronic timer with SCR from 2 to 65 cycles.
bullet 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.
bullet 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.
bullet Cos fi control.
bullet Force adjustment with scale in daN.
bullet Additional arm couplings to provide larger opening between arms.
bullet All transformer are coated with F class insulation material. Test are made using 4000 volts.
bullet Supplied complete with 125 mm arms.
bullet Large choice of arms and electrodes.
Pulsation weld time control available (P version). 

WATER COOLED PORTABLE SPOT GUN ITEM 7903 - 6 KVA
7903 image

bullet For high operating rate works in car body repair and light production works in Industry.
bullet Fully water-cooled portable spot gun to be used with arms item 7512 - 7513 - 7514 - 7515 on request.
bullet Versatile portable spot welder for auto body repair shops and maintenance shops.
bullet Synchronous built-in electronic timer with SCR from 2 to 65 cycles.
bullet 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.
bullet 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.
bullet Cos fi control.
bullet Force adjustment with scale in daN.
bullet Additional arm couplings to provide larger opening between arms.
bullet All transformer are coated with F class insulation material. Test are made using 4000 volts.
bullet 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
         
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
         
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
         
Water cooling  l/min 2.5 3.7 3.7
Water max. pressure bar - - 2.5
         
Aerial noise produced dB(A) < 70 < 70 < 70
Level of vibrations m/s2 < 2.5 < 2.5 < 2.5
Measure conditions        
welding time cycles 14 14 20
welding current kA 5 5 6
working rating in welds/min 2 2 6
         
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.