High-voltage circuit 15 - 3
Siemens-Elema AB Register 6 SPR8-215.850.02 Page 3 of 4 MOBILETT Plus/ Plus E
Solna, Sweden Rev. 01 01.02 SPS-UD
High - voltage signal ”HT PEAK” curve for a short - time exposure of about
2.5 ms.
Fig. 2
The current converter T3 on board D13 picks up the high-voltage inverter current passing
through the high-voltage transformer in the single tank, where it is checked by a compara-
tor with reference to a threshold voltage value corresponding to a current of max. 290 A.
If the high-voltage inverter current exceeds this threshold value — such as due to a surge
or a discharge in the tube of the single tank — the signal ”OVERCURRENT” is generated
at the output of the comparator.
This signal is then fed to the microprocessor SAB 80C166 on the CPU board D1, which
interprets the signal as an error message.
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