CN tower elevator machine rooms

[@Sirenenwolfi]

Great! Very impressive machinery. How many kilowatts/horsepower does one of these gearless machines have, and at which DC voltage do they operate?

[@TheTheo58]

These gear less DC traction machines have an MG set which changes AC to DC (motor generator) the DC voltage at the communicator could be upwards of 480V DC. The HP rating is probably over 100 +.

[@mrmattandmrchay]

I like that sway detection device - quite simple

[@davidhorner5655]

What's the control type? Otis UCL? AUL? Or has it been moded?

[@qeelevators2960]

The 339, they actually have it in the Stratosphere Las Vegas.

[@TheTheo58]

This machine room is well designed with safety, with the steel cages around the machines. Which is probably the same for the over speed govenor pulley.

[@douro20]

Very uncommon practice.

[@qeelevators2960]

Yes and also useless and annoying to engineers. The motor room must be locked soooo...

[@LegendaryRadioJock]

Should have filmed this in landscape mode.

[@QEElevators]

Would love to see another video of this motor room, but in wide angle.

[@mmkenny1694]

im guessing that sway detection bar doesn't have the ability to make the elevators go slower than 500fpm or in the event of seismic activity disable the elevator does it? yes we do get earthquakes here in Toronto. Small ones but we can get up in to the sixes

[@arricammarques1955]

This technology was from the early 1970's. Suspect the systems have been restored since then during restoration.

[@qeelevators2960]

Why does the motor sound so weird when leveling! (Thanks for the explanation!)

[@TheTheo58]

One of those traction machines might have been powered by a DC Drive instead of an MG Set, which creates harmonics in the field/armature/often the bearings. Unlike with the MG set which cuts out when the leveling field cuts in "the chock" from the DC Drive can cause these noises, when the elevator is leveling.

[@QEElevators]

@@TheTheo58 I know it is a scr drive. Thanks for explaining that noise. If I ever visit the cn tower I will try to plan a tour of the mechanical in advance.

[@woodey028]

VVDC?

[@freightjohnson2546]

What Is Cn

[@gwr1475]

+Freight Johnson Canadian National

[@freightjohnson2546]

Sorry