Thanks a lot for your reply, MedMartin.
In spite of spending a lot of hours on reading 60601-1 some general issues still have stayed unclear.
The reason for the 1 MOP in J.1 is that there has to be an isolation for the applied part to limit patient currents from secondary voltage. And in from figure J.7 there is also the requirement for 1 MOP for mains voltage (mains on applied part). But since your device has no applied part there is also no requirement
As I tried to show in Qstn_MOP_bwn_SP&enclosure.pdf the limitation of patient currents from secondary voltage depends on quality of the separation of the MAINS PART and the SECONDARY CIRCUIT (i.e from a transformer TR, clearances and creepages etc.). Therefore, I claim we there is no need to provide MOPs between the SECONDARY CIRCUIT and the PROTECTIVELY EARTHED ENCLOSURE.
As I've understood from the standard Figure J.7 concerns to F-TYPE APPLIED PARTS which is not my case.
Also, I want to add that despite the capacitor charger has no APPLIED PARTS it is a part of ME DEVICE and this ME DEVICE may has APPLIED PARTS and these APPLIED PARTS may have an electrical connection with the enclosure of our capacitor charger.
The operator and patient may touch the enclosure connected to protective earth without risk and is even in case of an error protected by 2 MOPP.
I'm sorry, but I'm not sure I've understood this sentence correctly. Could you explain what you wanted to say?
Den