CSPP Capacitor Charging Unit Operation Manual
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Page 40 of 59
7. Changing a Thyristor ‘Module’ in the Field
Ensure all mains voltages are switched off and disconnected from the unit before attempting any
maintenance or upgrades.
Only trained engineers or qualified technicians should attempt any maintenance or upgrades.
CAUTION: HV capacitors may contain some residual charge.
Tools
Flat Blade Screw Driver.
10mm Ring Spanner x 2.
Procedure
(A) Remove the connections to the HV Buzz Bars using the 10mm ring spanners.
Noting the wiring configuration.
(B) Remove the interface control cabling.
(C) Remove the upper clamp plate by removing the two M5 securing screws.
(D) The Thyristor Module can now be removed from the clamp.
(E) The Buzz Bars are interchangeable between modules.
(F) Fitting is the reverse of this procedure.
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