Chat Falls Power Station, page 4
Installed Westinghouse generator
Another view of machine. The operational lights are on top, below that is
a pilot exciter, below that the main exciter, fellowed by the Kingsbury
thrust bearing, with the stator at the bottom.
The pilot exciter commutator ring, on top of the pilot exciter rotor, which
is ot top of the main exciter commutator ring, which rests on the main exciter.
Since these are dc generators, they need comutator rings to rectify their
output. All dc generators would be ac generators if they did not have a commutator
(or other rectifier). If this needs clarifying, see the WVIC explanation.
Examination of the commutator of the main exciter. You can see the large
number of commutator bars, a few turns of the winding are connected between
The Kingsbury thrust bearing on top, the stator
(below) which is viewed through the air passages. The red-brown color on
all the windings is a Glyptal coating.
Provision for new machine. Half the machines in this station are owned by
OPG, half by Hydro Quebec. Each has a provision to expand by one generator
if desired. This is a common feature in power houses.
A view of the generator floor.
End view of generating station transformers.
Spark gap to control over voltage. If lightning strikes, the gap will arc
over. Once the air is ionized the gap is almost a short circuit and lowers
the voltage drastically. When one of these fires near you, you will
begin to appreciate the word megawatt.
View of the switch yard. This allows one to change which sources feed which
lines. There are line coming from Paugan (Lowe QC), lines to other statrions
in the Arrnprior area, and lines to Ottawa and Toronto.
Control panel for a generator
A final view of the generator floor. The blue walls around the generators
are sound barriers.
Go back to the ELEC9706 page
Go on to Chat Falls_1,
Glyptal(R) is a red-brown varnish
like coating made by General Electric, and used to cover many electric motors
and generators, and also internal combustion engines. It is a good insulator,
and resists moisture oil and high temperatures