The power station itself, 2 km from Loch Ness and containing the turbine and generator units, is housed in a large cavern a quarter of a kilometre below the hillside, adjacent to a smaller cavern containing the main transformer.
42.
The biodegradable ester cooled inverters with GTO thyristors and the also ester cooled main transformer of the DBAG Class 145 was derived from those of the DBAG Class 101, but with less components for the lower maximum power, providing for individual bogie control rather than individual axle control.
43.
To gain the " buck / boost " feature, all that is required is two separate switches so that the AC input can be connected to one of the two primary taps, while the load is connected to the other, thus using the main transformer's primary windings as an autotransformer.
44.
End strobes, new marker lights and a new pilot were installed on the cab ends, and the key operated locks were all standardized to match the Erie Lackawanna coach keys as used on the Arrow III . Finally, the main transformers were cleaned of PCBs and replaced with an EPA approved substitute.
45.
Set comprised : 1 x Porsche 911, 1 x Chevrolet Corvette, 8 x 90 degree 9 " Curve, 1 x 9 " 6V Track Terminal, 1 x 9 " Straight, 2 x 6 " Straight . 6V Mains Transformer and 2 x Hand Controllers . 8 Crash Barriers, Sticker Sheet & Bridge supports.
46.
Set comprised : 1 x Jaguar XJ Series, 1 x BMW 320i, 6 x 90 degree 9 " Curve, 1 x 9 " 12V Track Terminal, 1 x 9 " Straight, 2 x 15 " Straight . 12V Mains Transformer and 2 x Hand Controllers . 6 Crash Barriers, Sticker Sheet & Bridge supports.
47.
Set comprised : 1 x Renault Elf, 1 x Porsche 936, 10 x 90 degree 9 " Curve, 1 x 9 " 12V Track Terminal, 1 x 6 " Straight, 1 x 24 " Flying Jump, 1 x 9 " Crossover . 12V Mains Transformer and 2 x Hand Controllers . 8 Crash Barriers, Sticker Sheet & Bridge supports.
48.
Set comprised : 1 x Porsche 936, 1 x Renault Alpine, 11 x 90 degree 9 " Curve, 1 x 9 " 6V Track Terminal, 2 x 45 degree 9 " Curve, 11 x 9 " Straight, 2 x 6 " Straight . 6V Mains Transformer and 2 x Hand Controllers . 12 Crash Barriers, Sticker Sheet & Bridge supports.
49.
Set comprised : 1 x Jaguar XJ Series, 1 x BMW 320i, 9 x 90 degree 9 " Curve, 2 x 45 degree 9 " Curve, 1 x 9 " 6V Track Terminal, 5 x 9 " Straight, 2 x 6 " Straight . 6V Mains Transformer and 2 x Hand Controllers . 12 Crash Barriers, Sticker Sheets & Bridge supports.
50.
Consequently these techniques are used even where a mains transformer could be used; for example, for domestic electronic appliances it is preferable to rectify mains voltage to DC, use switch-mode techniques to convert it to high-frequency AC at the desired voltage, then, usually, rectify to DC . The entire complex circuit is cheaper and more efficient than a simple mains transformer circuit of the same output.
