2.1 The Power Source
The power source consists of a one-phase transformer, a capacitor accumulator, a welding thyristor, a dis-
charge resistor, a charging connection with a rectifier, and an electronic control system. The standard model
is laid out for a 230 V mains input voltage.
2.2 Technical Data of KST 108 and KST 110 Power Sources
tip ignition stud welding (gap or contact welding),
welding range Ø (mm)
loading voltage range (infinitely adjustable) app. (V)
max. studs/min. for ... Ø (mm)
mains power supply 50/60 Hz, 1-phase current (V)
mains connection plug for 230 V (A)
mains connection cable, 3-pole, for 230 V (m/mm
2
)
mains time-lag fuse for 230 V (A)
operational temperature range (°C)
housing dimensions (L x W x H) mm without
handles and legs
Approved for operation under increased electrically hazardous
conditions, CE labelling according to EN 60974-1
Issue 4/2019 ver. 2.0 page 10 of 42
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