Tecna 7900-7902-7903 - 2-6 kVA

Portable spot welders - Items 7900-7902-7903 - 2-6 kVA

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.
  • Cos fi control.
  • 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.
  • Cos fi control.
  • 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

ITEM790079027903
Synchronous timer with SCR
Time adjustmentcycles2-652-652-65
Current adjustment 40-100%-
CoolingAirAirWater
     
Supply voltage 50Hz *V400400400
Nominal power at 50%kVA22.56
Maximum welding powerkVA131616
Short circuit current
with arms L=
kA
mm
7.2
125
8.2
125
8.2
125
Thermal current 100%A6107001700
No load secondary voltageV2.32.52.5
Insulation classFFF
Cables section for L<15 mmm22.52.52.5
Delayed fusesA161616
     
Standard arms throat depth Lmm125125-
Max. electrode force
with arms L=
daN
mm
120
125
120
125
120
125
Arms gapmm969494
Max. electrodes stroke
with arms L=
mm
mm
55
125
55
125
70
150
     
Water coolingl/min2.53.73.7
Water max. pressurebar--2.5
     
Aerial noise produceddB(A)< 70< 70< 70
Level of vibrationsm/s2< 2.5< 2.5< 2.5
Measure conditions    
welding timecycles141420
welding currentkA556

 working rating in welds/min

 

 2

2

6

     
Mains cable lengthm3.83.83.8
Net weight with arms 125 mmkg10.511-
Net weight with arms 150 mmkg--12
Net weight with arms 500 mmkg1313.513.6

* 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.

 

DOWNLOADS

Available downloads for this product:

 

 

Specifications subject to change without notice.