Tecna Three-Phase spot and projection welding machines, direct current 6101D..6103D, nominal power at 50% d.c. 100kVA.
DC treephase welding machines, offering the following additional 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.
Welding control unit TE553 with welding current direct reading.
Six-phase silicon rectifier with device to check the diodes proper clamping.
Protection of the diodes against overload, over voltages, and temperature.
Synchronous SCR contactor insulated from the cooling water circuit with protection thermostat.
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.
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.
Adjustable double stroke with key control, cylindrical guided stems with adjustable anti-rotation device.
Complex pneumatic cycle, with electrode low pressure squeeze.
Built-in compressed air filter unit and tank, compressed air disconnecting device.
Electrodes descent without pressure for both maintenance and set-up.
Arranged for 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 6101D, 6102D only and are available on request on model 6103D.
Flow-switch which stops the machines if the cooling water does not flow (it works with either city water or recirculating water).