How does overhead catenary system work?
In our world, a catenary is a system of overhead wires used to supply electricity to a locomotive, streetcar, or light rail vehicle which is equipped with a pantograph. The pantagraph presses against the underside of the lowest overhead wire, the contact wire.
What are the different types of catenary system?
Different type of high-speed catenaries implemented in the world: (a) stitch wire catenary; (b) simple catenary; (c) sinkansen catenary. The quality of the current collection of high-speed trains is dependent on the compatibility of the catenary and pantograph dynamics and on its implications on the contact force.
What is an OCS pole?
Overhead Catenary System (OCS) poles provide power to light rail trains through overhead wires. On Olson Memorial Highway (OMH), the Blue Line LRT Extension design team is considering options to enhance the OCS poles.
What does OCS stand for in railway?
(a) On subdivisions, portions of subdivisions or other tracks specified in special instructions, movements will be governed by Occupancy Control System (OCS) Rules.
What is long time clearance of overhead line?
23.1 All overhead power line crossings upto and including 33 kV – provided with guarding under the power line….17. Clearance between the overhead line & railway track:
| Normal System Voltage (kV) | Min. Safe clearance (In metre) |
|---|---|
| 220 | 3.50 |
| 400 | 6.00 |
| 500 | 7.25 |
| 800 | 11.50 |
How do you calculate a catenary?
The catenary is described by the equation: y=eax+e−ax2a=coshaxa. where a is a constant. The lowest point of the catenary is at (0,1a).
What does catenary mean in English?
1 : the curve assumed by a cord of uniform density and cross section that is perfectly flexible but not capable of being stretched and that hangs freely from two fixed points. 2 : something in the form of a catenary.
What is a OCS structure?
Carbonyl sulfide is the chemical compound with the linear formula OCS. Normally written as COS as a chemical formula that does not imply its structure, it is a colourless flammable gas with an unpleasant odor. It is a linear molecule consisting of a carbonyl group double bonded to a sulfur atom.
What is a general bulletin order?
A TOP issued within limits of a movement(s) that has passed or will be identified by the foreman as having passed the foreman’s location. GENERAL BULLETIN ORDER(S) (GBO) Instructions regarding track condition restrictions and other information that affect the safety and operation of a movement.
What is an office car special?
Several railroads today have what is called an ‘Office Car Special’, a term used for the executive train. Often the call sign or train symbol for this type of train is OCS.
What is the minimum ground clear distance for 11KV overhead line?
Clearance above ground of the lowest conductor As per IE Rule 77
| Over head Line Across Street | |
|---|---|
| Low and Medium Voltage | 5.8 Meter |
| Low/Medium /HT line up to 11KV If Insulated Conductor | 4.0 Meter |
| Above 11 KV Line | 5.2 Meter |
| Above 33KV Line | 5.8 Meter + Add 0.3 meter for every additional 33KV |
Which is a part of overhead line?
An overhead line consists of conductors and ground wires, towers, insulation, hardware, and foundations.
What is the standard height of power lines?
Power lines with a voltage above 300 volts require a minimum height of 15 feet. Public and commercial areas, especially those that feature over-size truck traffic, need greater clearance for safety’s sake and the National Fire Protection Association suggests a height of at least 18 feet.
What are overhead utility lines?
Overhead lines or overhead wires are used to transmit electrical energy to trams, trolleybuses or trains. Overhead line is designed on the principle of one or more overhead wires situated over rail tracks. Feeder stations at regular intervals along the overhead line supply power from the high-voltage grid.
What is overhead contact system?
Rigid Catenary (or Overhead Contact System) The rigid catenary is an Overhead Contact System (OCS) that can replace, with many advantages, the contact wire with sustentation wire, the third rail or the suspended bimetallic T-rail.
What is overhead power line?
An overhead power line is a conductive line used for the transmission of power from a generating station to an end destination.
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