Siemens MOBILETT Plus - Page 57

HT and single tank error diagnosis 6 - 11
Siemens-Elema AB SPR8-215.898.01 Page 11 of 12 MOBILETT Plus / - E/ - M
Solna, Sweden Rev. 05 01.02 SPS-UD
CH1: 20 mV/div, (100 A/div), 10 µs/div (Inverter current);
CH2: 500 mV/div, 20 kV/div (HT)
CH1: Inverter current 50 A/div, 10 µs/div
Fig. 8 High speed HT discharges (Defective tube, transformer, capacitor)
Fig. 9 Abnormal inverter current (Defective single tank)
CH1
CH2
Inverter
current
HTPOS
on D1
T
Inverter
current