To reduce overvoltages during the turning off of the gate turn off thyristors, {HEAD ~ which overvoltages} originate from {TAIL ~ stray inductances} in the feed lines, an overvoltage capacitor is connected in parallel with these thyristors via the reactor free wheeling diode 
To reduce overvoltages during the turning off of the gate turn off thyristors , { HEAD ~ which overvoltages } originate from { TAIL ~ stray inductances } in the feed lines , an overvoltage capacitor is connected in parallel with these thyristors via the reactor free wheeling diode
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH