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Hydro-electric Generators,

St. Margaret’s Bay  System, Nova Scotia

How It Works

"A hydraulic turbine converts the energy of flowing water into mechanical energy. A hydroelectric generator converts this mechanical energy into electricity. The operation of a generator is based on the principles discovered by Faraday. He found that when a magnet is moved past a conductor, it causes electricity to flow. In a large generator, electromagnets are made by circulating direct current through loops of wire wound around stacks of magnetic steel laminations. These are called field poles, and are mounted on the perimeter of the rotor. The rotor is attached to the turbine shaft, and rotates at a fixed speed. When the rotor turns, it causes the field poles (the electromagnets) to move past the conductors mounted in the stator. This, in turn, causes electricity to flow and a voltage to develop at the generator output terminals."

The Generator in the photo to the left was made by General Electric Co limited from Peterborough, Toronto,Ontario, Canada.

The data tags on the generator in the foreground (see below) show the specifications for the generator.

The lower blue plate shows that the generator was rewound by Thompson Electrical Works Limited, Montreal, Quebec, Canada in 1965 and produces:-

2900 KVA

13,200 Volts

127 Amps

Click For Larger Image Of Data Tags

Photo - Tidewater Power Plant,

St. Margaret’s Bay, Nova Scotia

Generator at Mill Lake Power Plant

Generator at Mill Lake Power Plant