Tecna 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

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

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.

 

DOWNLOADS

Available downloads for this product:

 

 

Specifications subject to change without notice.