Type of switch fitted to Melbourne W class trams for switching the line breaker on or off. This switch controls power to the line breaker activated by the tram controller. Had been fitted to the Restaurant tram No. 3 or Cuthberts 939. Was found to be defective - the power was available to the controller even when switched to the OFF position, that is, failed unsafe. Was replaced 4/11/2015 from a spare. Has the name of the manufacturer on the cover. Demonstrates a switch that failed unsafe.Tramcar equipment - line breaker switch - fibre material box and cover containing electrical switch and 10Amp Cartridge fusew class trams, cuthberts 939, switches, line breakers, faulty equipment, safety

This protection relay apparatus (a large electrical fuse), which permits the easy monitoring and disconnection of faulty electrical apparatus connected to the large SEC Victoria Hydro Scheme's electrical power producing generators. These generators are powered by the hydro force of "stored" water at a higher altitude. The establishment of both the NSW and Victorian Hydro Schemes was achieved from the early 1900's to the 1960's. At this point in time the need for additional power sources to quench both an industrial and domestic demand for electricity was purely an economic and not and environmental (carbon reduction) factor. This hydro scheme was instigated by "the Government of the day" as a bold move and was the major force of the World War II refugee and "technical" workforce inclusion of skilled and unskilled migration into the Australian environment. Although this mass "invasion" of workers with families was thought of in some circles as intrusive, the expansion of population post war years and its integration into the Australian rural sector, produced the multi- lingual multi-cultural diversity of later years.This protection relay is very significant to the Kiewa Valley as its use was introduced during the Kiewa Hydro Scheme. Although only a small apparatus it was part of the explosion of human resources into the valley. This influx of population transformed the region from that of a basically quiet rural region to one which evolved into both an industrial and a larger residential community. This evolution in the valley created a change, not only in the "physical" landscape but also the socio-economic expansion which permitted other "tourist" based industries into the valley.This protection relay unit has a black painted metal shell with four copper enclosed "prongs" fastened to the rear of the housing(from a bake-lite plate) . Between these "prongs" are four "empty" points allowing additional "screw on" bases. The front glass enclosed meter and recorder allows for the identification and automatic disconnection of any faulty equipment connected to the main power generator. This equipment acts similarly to a modern day circuit breaker found on the electrical circuit boards of residential homes.On the top section of the front panel "ASEA" to the left "Made in Sweden" and to the right "Frabrique en Suede" below this "RIS" below this a graph and next to it two columns of numbers and a pointer for each setkiewa hydro electricity scheme, victorian state electricity commission, relays, generators

Digital Memory module, or Portable Memory Key, equivalent in type to a USB stick, black plastic with sliding mechanism to protect 8 copper contact strips with a digital memory area at one end. Stamped into the memory area part number "109 13858 512K KDM", indicating it had a memory storage of 512Kb. Above the number are the remains of a white bar-code label. Has as key type appearance. .1 - Numbered in white numerals "08330705" .2 - ditto "120703350" Advised by Adam Chandler 20-11-2017: They were used by tram and bus drivers. The PM (portable memory) key was issued to each driver. At the start of a shift, the driver would put it into a cream-coloured terminal at the sign-on point (starter's office in the depot) and transfer their shift information onto the key. Once the driver reached the vehicle, they put the key into the black-coloured terminal (tram driver's keypad - TDKP or bus driver's keypad) to upload the shift data to the vehicle. This was also the method used to transfer the 'blacklist' of periodical passes that had been stolen or misappropriated to each vehicle. IE if an annual Metcard had been stolen, once the holder reported it to Metcard they would blacklist the ticket number and this would be sent out to every depot and piece of equipment. From memory there were 100 slots in the blacklist. When a tram driver was finishing their shift (either being taken or running in) they would transfer all of the validations and ticket sale information to the PM key by inserting it a few minutes before the end of shift and downloading all of this data from the vehicle. They would then be required, on arriving back at the starter's office, to insert the key in the cream coloured terminal once more and copy all of the information across to the main system. Bus drivers also issued tickets from their BDKPs so the black PM key was also used for ensuring the accounting information was copied across to the main system. My memory might be faulty but I recall using them at railway stations with the Booking Office Machines (for starting and finishing shifts). No transfer of ticket issuance data however, as there was a computer equipment cabinet at each railway station with a DSL or cable link back to the OneLink central computers (in the revenue clearing house) I don't know what happened with the MTH cars on the Stony Point rail line but I could presume that there was a cabinet with a TDKP equivalent in it and a similar procedure for start and finish of shift.trams, tramways, ticket machines, metcard