Linear action spot and projection three-phase DC welders - 100-630 kVA

MAIN WELDER FEATURES - High mains power factor. - Reduced load on plant primary electrical service. - Balanced load distribution on the three phases. - Reduced effect of magnetic materials between arms on the welding current. - Reduced installation costs. Direct current three phase welder. In comparison with a traditional welder, it offers the following advantages: Welding control units with welding current direct reading. Six-phase silicon rectifier with device to check the diodes proper clamping. Protection of the diodes against excess voltages, and temperature. Synchronous SCR contactor insulated from the cooling water circuit with protection thermostat. Standard on all models: two-hand safety control with timer assuring the best safety, and removable key selector. The two-hand control push-buttons are standard on models and only (they are available on request on model ). Two-stage electric foot control for clamping the pieces only if correctly positioned. Preconnected for additional double stage electric foot control for the direct recalling of welding program No.2 (not on units equipped with the rotary selector recall). Emergency push-button to stop the machine immediately. Protection with automatic circuit breaker. Water-cooled transformer, plates, electrode-holders and electrodes; transformer with epoxy resin coated windings. Pneumatic cylinders with chrome plated stem and low friction seals which do not need lubrication (eliminates oil mist and to protect the environment). Adjustable double stroke with key control, cylindrical guided stems with ajdustable anti-rotation device, prismatic precision roller guides. Complex pneumatic cycle, with electrode low force squeeze. Pressure program with forge function on demand. Built-in compressed air filter unit and tank. Compressed air disconnecting device. Electrodes descent without pressure for both maintenance and set-up. Flow-switch which stops the machines if the cooling water does not flow (it works with either city water or recirculating water). Valve to stop the flow of the water cooling when the machine is off. Cooling water saver with control unit TE 1003.

TECHNICAL DATA

* Values subject to variations according to frame and L and D lengths
** Different voltages and frequencies on demand

AVAILABLE ON DEMAND:  

• Rotary selector for recalling the welding programs.
• Insulated serial interface RS232, enabling the connection with a serial printer or a personal computer for production data recording.
• Prismatic stem cylinder in tempered steel and roller guide.
• Additional foot control to recall program No. 2 (not available with rotary selector recall).
• Two-hand safety control on pedestal, adjustable height (standard on projection welders).
• Proportional valve.
• Pneumatic circuit with low force squeeze and forging.

MAIN WELDER CONFIGURATIONS

The combinations of: structure, power, cylinder and lengths L - D are to be agreed with our Technical Department

CYLINDERS
 

* On request

WELDING CONTROL UNITS

Three-phare welders can be equipped with the following contol units:

TE 183 - 16 programs, 16 parameters.Built-in ammeter with current or conduction angle limits.Welds counter.

TE 503 - 63 programs, 25 parameters. Built-in ammeter with current and conduction angle limits. Half cycle welding time.Welds counter.

TE1003 - 63 programs, 25 parameters. Built-in ammeter with current and conduction angle limits. Half cycle welding time.Welds counter. Memory card for programs saving.