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Difino
| • | In an ill-fated gas turbine episode which marked the life of the first President Street Power Station, Johannesburg, supply tenders were invited, but although the cheapest was for steam driven plant, the consultants recommended a gas engine scheme that promised sufficient savings in fuel consumption to recover the increased capital cost within a few years. However, the Scottish contractors, Stewart and Company, supplied untested and experimental engines. There was a history of costly failure of gas engines in UK linked to the problem of bituminous coal and impurities that caused breakdowns. The estimated power needed by Johannesburg was almost10 MW, which required gas engines bigger than any previously built.
Mordey and Dawbarn recommended the following supplies which were adopted by the municipality:
· 500/600 volts DC (negative earthed) for the tramways.
Source: [wikipedia: president street power station, johannesburg]
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