Physical description

Digital copy of a 9 page report by the MMTB, titled Project 3-75 - Replacement of Substation Equipment", proposing to replace the rotary converters installed between 1924 and 1930 with silicon rectifiers. Gives the locations, costs, schedule of replacement commencing 1975, in particular South Melbourne, Malvern and Young St Fitzroy.

Gives a background to the system, a list of all the substations at the time, including date of installation, type, replacement of HV equipment, costs, reliability, maintenance costs, and benefit to cost ratio.

Inscriptions & markings

Has the stamp of "Joint Ministry of transport and Tramways Library" and a "Plan & EPA Library barcode"