Pegasar 500 accu HBS CD Welder

Pegasar 500 accu – Battery-Powered Stud Welding Unit

For CD stud welding (capacitor discharge welding/contact welding) according to current standards.



  • Especially suitable for thin sheets (at least 0.5 mm)


Process variants

  • Contact welding
  • Gap welding



  • Automation (series)


Technical Data


Automation Series
Welding range Studs (steel) #4 to 1/4” (M3 to M6),
Studs (aluminum) #4 to #8 (M3 to M4)
Welding material Mild steel, stainless steel, aluminum
Welding rate M3 = 40 studs/min. (Charging voltage 55 V)
M6 = 20 studs/min. (Charging voltage 95 V)
Capacitance 100 000 μF
Welding time 1 to 3 msec
Energy 500 Ws
Charging voltage 50 to 100 V (stepless voltage regulation)
Primary power 100 V to 240 V, 50/60 Hz, 10 AT, in battery operation: 25.55 V
Power source Capacitor
Cooling type F (temperature controlled cooling fan)
Protection class With inserted battery: IP 44, without battery: IP 23
Operational and storage conditions According to current standards
Dimension L x W x H 18.70” x 11.81” x 13.98” (475 x 300 x 355 mm) with handle
Weight 26.46 lbs (12 kg) incl. battery, 23.59 lbs (10.7 kg) without battery
Order No. 92-12-0500 (Pegasar 500 accu)





  • Microcontroller – for precise process times, optimal functional reliability and maximum operating convenience
  • Function monitoring – automatic function test following power-up; monitoring of all internal system functions
  • Display of error codes – on LCD display
  • Lift test – for gap welding guns and stud welding heads
  • Library function – 8 programs (charging voltages) can be stored; library with stored welding parameters; additional
    customer-specific entries possible; user interface available in various languages; display of charging voltage in volts
  • Process monitoring – recording and analysis of factors affecting the welding process by means of the process-analysis
    factor (PAF); after each weld, the reference PAF value is compared with the actual value; display of the actual and
    reference values; switchable automatic welding stop, if limits are exceeded; limits selectable in increments; manual entry
    of PAF value possible
  • RS232 interface – for data output; data and time of day are stored; welding parameters of each weld are logged



  • Extremely easy to operate
  • Compact
  • Robust – metal housing withstands rough treatment in shop and on site



  • With integrated mains filter (protection against voltage peaks)
  • Optimal for construction sites with large mains voltage fluctuations – safe to operate with mains voltages ranging between 85 to 265 V (wide range power supply); use even with critical voltage supply
  • EMC test
  • High-voltage test with log
  • Retriggering lock-out – prevents welding on a welding element that has already been set
  • Thermal monitoring of transformer and internal temperature of stud welding unit- automatic shutdown in case of overheating
  • Temperature-regulated ventilator – reduces noise and dust in the stud welding unit (greater system reliability)
  • Control unit galvanically separated from welding lines – high degree of functional safety
  • Optimal protection against external interferences



  • Display – infinitely adjustable power setting (charge reversal via set-point switch); easy monitoring of all functions via LCD display; user-friendly operation via large LCD display
  • Powerful – built-in power reserves
  • Electronic regulation of charging – allows high clock rates
  • Trouble-free changing of welding voltage polarity possible by reconnecting welding current and ground cables
  • Use of special capacitors (developed for stud welding)
  • Capacitance switching – 66,000 F or 132,000 F


Suitable Welding Guns

  • C 08
  • CA 08
  • PAH-1
  • KAH 412
  • KAH 412 LA


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