TECNA 3664P Auto Body Spot Welder

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Auto Body Spot Welding System

Any Weld – Any Vehicle

TECNA 3664

Major OEM Approvals

Smart-Plus Technology

Automatic Sensing & Adjustment

No Operator Input Required

Easily Updated – Never Obsolete

Manufactured By The World Leader In Resistance Welding

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The 3664P Smart Plus

The TECNA 3664P

The 3664P Is a 14,000 Amp Inverter Spot Welder With Integrated Transformer Gun

Featuring “Intelligent” Control Which Can Produce Factory Grade Welds On Any Vehicle, With Any Combination Of Alloys And Number Of Panels Automatically, With Absolutely No Operator Input Needed

Modes Of Operation

4 Modes:

SMART PLUS – Your tech can make OEM quality welds regardless of alloy combinations or number of panels. The 3664P automatically determines the components of the weld, selects the best parameters and monitors them during the weld to ensure perfect results.

SMART – Panel guage, number of panels and HSS alloys being welded are entered via touch-screen to produce the exact weld desired.

EASY – In this mode, the tech selects all parameters: Current, time, pressure, etc. This mode is used to provide the technician with complete control over the weld. This mode is commonly used for restorations.

EXPERT – All factory OEM weld settings are stored in these programs. They may not be altered, ensuring that exact OEM requirements are met.

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TECNA Brochure


Resistance spot welding system, controlled by a microprocessor, designed for car body repair shops. The welding control unit with digital touch-screen enables to display and check all the welding parameters according to the type of tool, the type and thickness of the sheets to be welded.

The welder's main features are: system that automatically acknowledges the tool connected to the machine; Welding tool equipped with built-in transformer that is connected to the machine by means of an industrial plug and quick connection devices. Thus, it is possible to easily change the tool avoiding the use of keys, tools and screws; fully water-cooled welding tool, transformer, arms and electrodes, by means of a closed circuit cooling system placed on the trolley of the machine.

Technical data


ITEM 3664
Mains voltage/frequency* 400V 50Hz
Phases nr. 3
Mains protection (delayed) A 25-32
Protection degree IP21
Weight kg 130

* Different voltages and frequencies on request


ITEM 8679T 8679TS 8679TS7
Nominal power at 50% kVA 12 12 12
Maximun welding power kVA 17 17 17
Maximum secondary current kA 14 14 14
Thermal current 100% kA 1.8 1.8 1.8
No load secondary voltage V 8.7 8.7 8.7
Max. electrode force daN 450 450 700
Recognition sensor - S S
Protection degree IP21 IP21 IP21
Weight kg 12.5 12.5 12.5


Specifications subject to change without notice.

Standard or upon request accessories

Photo Description


8679t Item 8679T
standard 8679ts Item 8679TSfor SMART PLUS mode
standard 8679ts7 Item 8679TS7for SMART PLUS mode

standard=Standard onrequest=Upon request