Substations
Transformers
DC Connections
CAD Design
Trains & Tunnels
100
This converts voltage from AC to DC.
What is the Rectifier?
100
This is the incoming AC voltage value that the transformer would have to step down in Brooklyn.
What is 26.4KV?
100
In Traction Power, this term is used to define a crossing point of two rails.
What is a frog?
100
This is the folder path to get to the Traction Power Standard Drawings.
What is I:\standards\dc_power?
100
What it means when you find a red and white striped sign along the subway wall.
What is "No Clearance"?
200
These are used to step down the heavy line currents to a more manageable and measurable value by an Ammeter.
What is a Current Transformer?
200
This is the stepped down voltage leaving a Substation Transformer.
What is 490VAC?
200
A break in a run of third rail to allow for the rail to enlarge due to heat.
What is an expansion gap?
200
The microstation file from which all design drawings should start from.
What is the seed file? (pwrseed.dgn or dcseed.dgn)
200
This is the newly revised minimum voltage needed for a Traction Power Train to run in the system.
What is 480VDC?
300
This is where Con Edison's High Tension meets NYCT, outside of the substation.
What is a Property Line Box?
300
Eddy Currents and Hysteresis typically fall under this type of Transformer Losses.
What are Iron Losses?
300
Comprised of an Steel Rail with aluminium on the sides to reduce overall impedance.
What is 84C Contact Rail?
300
The people signing a contract drawing under these two sections must have a P.E. licence.
What is "Checked by" &"Approved by"?
300
Markers used in the subway system to identify locations and distances between locations.
What is stationing?
400
ANSI Device number used in association with protective relays to shut down or "lock-out" equipment when problems occur.
What is 86?
400
Not requiring an Interphase Transformer, this type of Transformer can comes apart in two pieces.
What is ANSI Circuit 25/26?
400
This is usually placed on the track to allow both running rails to act as return rails.
What is an Impedance Bond?
400
The name of the folder within the contract where you would place the project's Specifications.
What is "Non-DGN files"?
400
The name of the standard for Extra Heavy Traction service used to find the Substation capacity under contingency conditions.
What is NEMA RI-9?
500
Usually located on the ceiling, this provides a manual interruption between the DC breakers and the cables leaving the Substation.
What is a Disconnect Switch?
500
Replacing the formerly used Cast Coil Transformers, these are the newly accepted Dry-Type Transformer.
What is VPI or VPE?
500
According to Design Guideline 256, the resistance of 4.35 mΩ/1000ft refers to this.
What is 150lb contact rail?
500
The only way to change attributes of a reference is the use this function.
What are Level Overrides?
500
This is the model number of the AC Propulsion Trains used on the Division B Lines.
What is R160?
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