EWR-Portal

IFC for Rail ontology is being developed by Building Smart as a OpenBIM standard

We are working towards a collaboration with Building Smart to use IFC as the ‘master framework’ for our BIM, AIM and Digital Twin and extend this ontology to address national needs and ways of working.

IFC Rail Phase 1 Final Report

Requirement Analysis Report

Abstract

Conceptual Model Report

Context & Approach (Readme file)

Data Requirement Report

IR-CS-WP2-UML_Model_Report_Part 4_Railway.pdf (local)

Data Dictionary

BSDD IFC Search:

2.1

TRACK

2.1.1

RTR_OT_TR-200

Ballast bed

Consists of broken stones which are called ballast.

Main purpose: ensures stability of track, transfers forces from sleepers to substructure and allows to readjust the track geometry according to the correct alignment.

Wear and dirt reduce stability.

2.1.2

RTR_OT_TR-210

Ballast bed strengthening

Structural elements which are usually applied to the sides of ballast bed.

Reinforces the cross-resistance of the superstructure. Can also be ballast bonding or similar.

2.1.3

RTR_OT_TR-380

Banquet element

Usually at ballast level.

Outside of structure gauge.

Function: walkway, service path.

Access to track.

2.1.4

RTR_OT_TR-600

Bias loaded inspector

Equipment installed on track to inspect whether the load of vehicles is biased.

2.1.5

RTR_OT_TR-440

Blade

Movable machined rail often of special section, but fixed and/or joined at the heel end to a rail to provide continuity of wheel support.

"Half set of blades" is composed of one blade and one stock rail. Only replaceable as one unit during railway maintenance. Where blade or stock rail can be replaced separately (i.e.Metro) the objects are assigned as "blade elementary" and "stock rail elementary" in the conceptual model.

2.1.6

RTR_OT_TR-580

Blocking device

Equipment installed on classification yard (also named as shunting yard) to block rolling vehicles.

2.1.7

RTR_OT_TR-70

Bonded joint

Transition between two neighbouring running rails.

Electrically connected.

Used for Continuous Welded Rails (CWR).

Inhomogeneity in the supporting strength of the running rail (longitudinal, vertical and lateralforces).

Inhomogeneity in the stability of the track panel.

Origin of noise emissions.

2.1.8

RTR_OT_TR-390

Bumper

Buffer, object at end of track.

Function: prevents driving over; can be fixed on rails or the track panel - Can also be a natural element (rock, sand).

2.1.9

RTR_OT_TR-350

Cess between rails

Covering between rails for internal maintenance purposes.

Can be walked on.

Situated in the track.

Not public.

2.1.10

RTR_OT_TR-20

Check Rail

Rail laid close to gauge face of a running rail which does not carry a railway wheel but ensures, by guidance of the wheel, the safe passage of both wheels of the axle through small radius curves, turnouts, crossings by not allowing the flange of either wheel to ride up over the running surface of the running rails.

2.1.11

RTR_OT_TR-570

Controllable retarder

Equipment installed on classification yard (also named as shunting yard) to regulate the speed of rolling vehicles.

2.1.12

RTR_OT_TR-1030

Dilatation panel

Sliding transition in the longitudinal direction between two neighbouring running rails.

Device which permits longitudinal relative rail movement of two adjacent rails (i.e. due to themical expansion forces), while maintaining correct guidance and support.

Electrically connected

Inhomogeneity in the supporting strength of the running rail (longitudinal and lateral forces)

Inhomogeneity in the stability of the track panel

Special design with reinforcing elements in the track panel

2.1.13

RTR_OT_TR_1008

Dilatation superstructure

Dilatation superstructure is one subtype of track part with Dilatation panel.

2.1.14

RTR_OT_TR-220

Earth mat

Located between the ballast bed and the top foundation layer.

Not necessarily required. Often used to control the elasticity of the whole track and prevents the ballast fast degradation (if there is a hard subgrade).

2.1.15

RTR_OT_TR-540

Earthing Terminal

Object used for earthing.

Installed in track slab or concrete slab.

Welded to reinforcing bar in track slab or concrete slab.

2.1.16

RTR_OT_TR-330

Embedded track for traffic

Tracks recessed into road surface.

Superstructure type usually specific (slab track/grooved rail).

Covering can be driven on in all directions.

Usually used in public areas.

Combined drainage systems normally used.

2.1.17

RTR_OT_TR-480

Emergency fish plate

A temporary joint with fishplate for safty reason i.e. to prevent rail breakage in case of damage on rail running surface or within the rail.

2.1.18

RTR_OT_TR-120

Fastening

Assembly of components which secures a rail to the supporting structure and retains it in the required position whilst permitting any necessary vertical, lateral and longitudinal movement.

Essential for stability of the track panel.

Absorbes the shear forces from the rail.

Depending on the construction type the different effects regarding vertical and horizontal forces.

Proper contact prevents dynamic impacts on the track pannel (e.g. hits from the rail to the sleepers or risk of losing holding force in the sleepers due to dynamic loads from the trafficloads (hole bearing etc.)

Note: The major part of the vertical force absorbtion happended throught a direct contact of the rail an the track slab (fastening on the sleeper) or to the sleeper itself (depending on the type)

2.1.19

RTR_OT_TR-40

Frog

Arrangement ensuring the intersection of two opposite running edges of turnouts or diamond crossings having crossing vees (single or double) and wing rails.

Direct contact with wheel (with running surface and wheel flange depending on the design)

2.1.20

RTR_OT_TR-140

Gauge tie rod

Device to ensure rail distance for simple track panel.

Can assure the function of a rail fastening or a sleeper.

Often used at build conditions oder in temporary solutions.

Also popular in forms of construction for driveable surfaces (e.g. tramways).

2.1.21

RTR_OT_TR-30

Guard Rail

Non-running rail mounted either inside or outside the running rail to protect vehicle, bridge, viaduct and other structures in the event of a derailment.

2.1.22

RTR_OT_TR-50

Half set of blades

"Half set of blades" is composed of one blade and one stock rail. Only replaceable as one unit during railway maintenance.

It is right or left hand as seen by an observer in the centre of the track facing the turnout heel from the turnout toe.

Function: change the direction.

2.1.23

RTR_OT_TR-170

Hollow sleeper

Special type of sleeper. Contains technical equipment (e.g. safety installations)

Protects equipment elements (e.g. turnout-setting mechanisms)

Allows equipment (e.g. cables) to safely run across the track panel

Limited absorption of force from running rail (via rail fastenings)

Limited dissipation of vertical load into ballast or supporting plate

Limited dissipation of longitudinal and lateral forces caused by friction/dovetailing (ballast) or supporting plate (slab track)

Can also be installed between normal sleepers.

2.1.24

RTR_OT_TR-60

Insulated joint

Transition between two neighbouring rails.

Electrically insulated for use of track circuits (incl. return electric traction circuit)

Usage has relevance for operations.

Used for Continuous Welded Rails (CWR).

Inhomogeneity in the supporting strength of the running rail (longitudinal, vertical and lateralforces).

Inhomogeneity in the stability of the track panel.

Origin of noise emissions.

2.1.25

RTR_OT_TR-460

Insulated joint with fish plate

Transition between two neighbouring running rails but in not continuous rail zone.

Electrically insulated.

Used for jointed track.

Inhomogeneity in the supporting strength of the running rail (longitudinal, lateral and vertical forces).

Inhomogeneity in the stability of the track panel.

The gap between the rails is the origin of noise emissions.

2.1.26

RTR_OT_TR-110

Lubrication

Prevent wearing of the rails throught the flange of wheel.

Reduce noise emissions.

Often located at inner side of the outer rail in a curve or near turnouts (depends from function wearing or noise reduction)

2.1.27

RTR_OT_TR-470

Not Insulated joint with fish plate

Transition between two neighbouring running rails.

Electrically connected.

Used for jointed track.

Inhomogeneity in the supporting strength of the running rail (longitudinal, lateral and verticalforces).

Inhomogeneity in the stability of the track panel.

The gap between the rails is the origin of noise emissions.

2.1.28

RTR_OT_TR-190

Panel strengthening

Used in transitions of diffrent types of superstructure (e.g. from ballast to slab track or bridges/tunnels with diffrent stiffness in the substructure).

Distributes the dynamic load peaks.

Improves stability and minimize shocks on the substructure.

2.1.29

RTR_OT_TR-1006

Plain track super structure

Plain track super structure is one subtype of track part without turnout panel or dilatation panel.

2.1.30

RTR_OT_TR-100

Rack-rail

Building module for enhancing traction and break performance (mountains)

Reinforces the track panel.

Located centrical in the track panel on the rail axes.

(Formerly also known as "Rack".

2.1.31

RTR_OT_TR-10

Rail

Absorption of force in the wheel/rail system (running surface and wheel flange), hunting oscillation

Distribution of force in the longitudinal direction (static and dynamic traffic loads)

Absorption of force in the longitudinal direction (temperature)

In case of a Switch: Special components are modeled seperately.

Depending from location/panel function: differnet specifications are possible (eg Wing rail)

2.1.32

RTR_OT_TR-490

Rail brace

Device to prevent rails from tipping and twisting.

Ensures track spacing between two running rails.

2.1.33

RTR_OT_TR-130

Rail-pads

Non-metallic pad placed between rail and baseplate or rail and sleeper, bearer or slab.

Frequent replacemets are necessary.

Absorbing shocks and reduce vibrations in the rail (leads to a better wheel-rail contact).

Reduce damages to the rail, wearing and noise issues.

Often used on heavy-load routes and/or curves.

2.1.34

RTR_OT_TR-340

Railway crossing

Railway crossing covering for roads (secured/unsecured).

Superstructure type also possible with ballast.

Covering can be driven on in the transverse direction.

Usually used in public areas.

Often entails changes to the stiffness of the superstructure/substructure.

2.1.35

RTR_OT_TR-160

Sleeper

Transverse components of the track which control the gauge and transmit loads from the rail to the ballast or other sleeper support.

Dissipation of longitudinal and lateral forces caused by friction/dovetailing (ballast) or supporting plate (slab track).

When it's used for turnouts and crossings, it's also called "bearer".

Often a special sleeper spacing is used under joints (i.e. insulated joint).

2.1.36

RTR_OT_TR-180

Sleeper Cap

Main function: Increasing the lateral stability (Often used in low radius curves in the case of continuous welded rail.)

Dovetailed with ballast.

Assigned to a sleeper.

2.1.37

RTR_OT_TR-150

Sliding chair

Part which supports and retains the stock rail and a flat surface upon which the foot of the switch rail slides.

Only used in turnouts.

Different types of construction (rollsbearing plates, lubricated or dry-running).

2.1.38

RTR_OT_TR-370

Sound absorption

Components in the track for sound absorption.

May also absorb vibrations.

Not included noise barriers at track side.

Often used in combination with slab track.

2.1.39

RTR_OT_TR-560

Speed regulator

Equipment installed on railway hump and classification yard (also named as shunting yard) to regulate the speed of rolling vehicles.

2.1.40

RTR_OT_TR-260

Spring-Damping system

Elastic elements are inserted between the superstructure (track and plate on slab track or ballast bed with ballast inserted in) and concrete structure (tunnelbridge or others). Some of the elastic elements have a partial decoupling effect between the superstructure and underground due to vibrations. Both helical springs and elastomer blocks or elastomer strips can be used as suspension systems.

2.1.41

RTR_OT_TR-450

Stock rail

Fixed machined rail, ensuring the continuity on the main or diverging track with the switch in the open position. The machined part of the stock rail supports its switch rail in the closed position giving continuity of line through this switch rail.

"Half set of blades" is composed of one blade and one stock rail. Only replaceable as one unit during railway maintenance. Where blade or stock rail can be replaced separately (i.e.Metro) the objects are assigned as "blade elementary" and "stock rail elementary" in the conceptual model.

2.1.42

RTR_OT_TR-520

Track Adjustment Layer

Track adjustment layer is a concrete layer or mortar layer cast or paved in-situ, which is used for supporting track slabs or track concrete slabs.

Track adjustment layer shall only appear in ballastless track structures.

2.1.43

RTR_OT_TR-530

Track Base

Concrete base is a kind of reinforced foundation cast in-situ, which is used for supporting track slabs or track concrete slabs.

Concrete base shall only appear in ballastless track structures.

2.1.44

RTR_OT_TR-510

Track Elastic Cushion

Track elastic cushion is a kind of layer set on grooved sides of a concrete base, which is used for mitigating the impact of longitudinal and lateral load on track structures.

Track elastic cushion shall only appear in ballastless track structures.

2.1.45

RTR_OT_TR-500

Track Isolation Layer

Track isolation layer is a structure layer placed on top surface of track bases. It may implement functions of damage repair of track superstructure under special circumstances and coordinate temperature deformation.

Track isolation layer shall only appear in ballastless track structures.

2.1.46

RTR_OT_TR-240

Track concrete slab

Track concrete slab is an integral reinforced concrete layer cast in-situ, in which bi-block sleepers, concrete turnout sleepers or other sleepers are embedded.

Track concrete slab shall only appear in ballastless track structures.

2.1.47

RTR_OT_TR-400

Track element at end of alignment

Alignment stop

Special functional installations such as axle-gauge changeover point; transporter wagon loading point.

2.1.48

RTR_OT_TR-1010

Track panel

The track panel is a functional view made up of the running rail, rail fastening and sleeper. One property of the track panel is that the components are permanently assembled and cannot be moved independently.

The track panel as a whole absorbs and transfers the forces into the superstructure. This may consist of a ballast bed or a slab track. In extreme cases (on simple railways), the track panel may lie on bare soil.

The track panel follows the routing in 3D space. It is uniquely identified by the track centre (routing/alignment) and the track centre's characteristics. It runs in the centre between the upper edges of the running rail. The track panel therefore has parameters regarding the horizontal and vertical routing and also carries information regarding cant.

In processes, the track panel is often considered as one unit not just when planning for projects but also as part of numerous superstructure maintenance measures.

A track panel may consist of the following object types but does not necessarily have to have all of them according to the conceptual model:-

Running rail
Rail fastening
Sleepers
Rail joints
Other objects

2.1.49

RTR_OT_TR-1005

Track part

Track part is the basic volume object for all objects of track superstructure. It refers to a segment of track system engineering which is part of the track system and has a unique structural type and functional type.

2.1.50

RTR_OT_TR-430

Track reference marker

Generally bolts which are firmly fixed to permanent components such as foundations, platform edges or civil engineering structures. Their position and elevation are known to thenearest mm (planar, x/y/z coordinates).

Serve as a reference for inspecting or ensuring (e.g. by mechanical tamper) the ideal location and elevation of the track panel and other installation elements.

Serve to hold technical measuring elements (e.g. prism mirrors)

2.1.51

RTR_OT_TR-590

Track scale

Equipment installed on track of freight yard to measure the weight of vehicles.

2.1.52

RTR_OT_TR-230

Track slab

Track slab is prefabricated reinforced concrete slab or prestressed reinforced concrete slab, which is a main element of slab track.

It transfers the load from rails and fastenings to sub-structures uniformly and longitudinal and lateral load of track structures to displacement-stopping structures.

Track Slab shall only appear in ballastless track structures.

The line where install track slab provide the place for installing fastening system. No sleeperis needed.

2.1.53

RTR_OT_TR-1000

Track system

Track System refers to a functional track with the explicit terminals. It refers a continuous sequence of track parts.

2.1.54

RTR_OT_TR-1020

Turnout panel

Like the track panel, the turnout panel is a functional view made up of the running rail, rail fastening and sleeper. Turnout panels also include specific turnout objects such as frogs, check rail, half set of blades etc.

One property of the turnout panel is that the components are permanently assembled and cannot be moved independently. Often, "turnout panels" are even supplied and installed as a single unit.

The turnout panel as a whole absorbs and transfers the forces into the superstructure. This may consist of ballast or a slab track. In extreme cases (on simple railways) the turnout panel may lie on bare soil. The internal geometric restrictions on turnout between the tip of the turnout and the last continuous sleeper (no bends, curvatures etc.) must be taken into account for the Placement of the objects.

The turnout panel follows the routing in 3D space. It is uniquely identified by the track centre and the track centre's characteristics. It runs in the centre between the upper edges of the running rail. The turnout panel therefore has parameters regarding the horizontal and vertical routing and also carries information regarding cant.

In processes the turnout panel is often considered one unit, not just when planning for projects from a topological point of view but also as part of numerous superstructure upgrade measures.

The turnout panel has an internal reference system which is recorded in the "Installation plan".

The entire rail system is defined as a seamless sequence of track and turnout panels which follows the topology and routing.

2.1.55

RTR_OT_TR-1007

Turnout superstructure

Turnout superstructure is one subtype of track part with turnout panel.

2.1.56

RTR_OT_TR-80

Welded joint

Continuous transition between two neighbouring running rails.

Electrically connected.

Special quality requirements for ensuring the continuous supporting strength of the running rail (primarily temperature fluctuations in the continuously welded track).

2.2	SIGNALLING

2.2.1

RSI_OT_AX

Axle counting equipment

System using counting points with a wheel detector and a counter which detects the occupancy of a section of track by comparing the number of axles which enter the section with the number of axles which leave the section parity of the numbers being necessary to give a clear indication.

2.2.2

RSI_OT_BA

Balise

Apparatus in the track by means of which data are transmitted to a train to update the train borne automatic protection equipment regarding the track and signal conditions of the lineahead.

2.2.3

RSI_OT_BAT

Battery

A device that stores and releases electrical energy. When charging, electrical energy can be converted into chemical energy and when discharging, chemical energy can be converted into electrical energy to power the load equipment.

2.2.4

RSI_OT_BO

Box

1. Housing for placing equipment/objects and and having protective functions.

2. It is used to place outdoor signal devices/objects and realize wiring electrical connection and protection of the device (with certain protection functions)

2.2.5

RSI_OT_CA

Cabinet

The equipment cabinet is usually made of cold-rolled steel or alloy for storing computer and related control equipment and provides protection against electromagnetic interference.

2.2.6

RSI_OT_CW

Cable and Wire

A cable segment is a flow segment used to carry electrical power, data, or telecommunications signals. A cable segment is used to typically join two sections of an electrical network or a network of components carrying the electrical service.

2.2.7

RSI_OT_CRO

Crocodile

Component of a train protection system. It is an electrical contact placed between the rails which in case of a danger situation may cause a warning horn to beep in the driver's cab.

2.2.8

RSI_OT_DER

Derailer

Fixed device which, when placed on the rail, derails the wheels of a vehicle and serves to protect a converging line.

2.2.9

RSI_OT_DET

Detector

Generic element for all kind of sensors which detect e. g. the passage of a wheel, falling rocks, strong wind etc.

2.2.10

RSI_OT_EL

External locking device

An external locking device is a mechanical device that locks the switch machine in acertain position from the outside.
The hook type external locking device locks the basic rail and the turnout sharp, the movable rail and the wing rail safely, and ensures the safety, stability and reliability of the switch under the lock state (in the process of high-speed and heavy-duty train running).

2.2.11

RSI_OT_FI

Fixing

Physical structure that supports equipment (e. g. signal frames as components of a signal the foundation of signalling equipment.

2.2.12

RSI_OT_FEEU

Full Electronic Execution Unit

Full-electronic execution unit is the execution and expression circuit of Computer based Interlocking which is composed of different electronic modules with different functions. e.g. signal module turnout module etc.

2.2.13

RSI_OT_IT

Impedance transformer

In the AC electrified section track circuit, the impedance transformer makes the traction current cross the rail insulation and connects the track circuit transmitting and receiving equipment to the rail by transformer coupling. It is installed at the connection between the traction backflow and the rail used to conduct the traction current and balance the traction current of the up and down track circuit so that the traction current circuit and track signal circuit form a conducting circuit respectively and do not interfere with each other.

2.2.14

RSI_OT_INI

Induction loop

Equipment for detection of the presence of a vehicle where a cable in the form of a loop between the rails, energized by alternating current derived from a local generator detects the metallic mass of a vehicle by its influence on the field of the loop, in order to provide an electric signal.

2.2.15

RSI_OT_IOTC

Input/Output device of track circuit

e.g. Track circuit receiver Track circuit transmitter

2.2.16

RSI_OT_IJ

Insulating joint

It is set at the boundary of a track circuit to achieve electrical insulation with an adjacent rail. It can be "mechanical" insulation or "electrical" insulation.

2.2.17

RSI_OT_LCE

Level Crossing Equipment

A level crossing is an intersection where a railway line crosses a road or path at the same level. The purpose of LCSE is to prevent vehicles or pedestrians from crossing the railway after the train has been notified. It includes: LC Traffic signal, LC Traffic sign, LC Barrier, LC Engine, Obstacle detector, etc.

2.2.18

RSI_OT_LOD

Local operation device

Installation providing push buttons, indicators and switching devices, lever for local operation.

2.2.19

RSI_OT_LO

Lock

Mechanical device to fix an element (point, derailer, level crossing) in a certain position.

2.2.20

RSI_OT_LCO

Lock combination

Mechanical device for release of several dependent keys by a main key.

2.2.21

RSI_OT_LDE

Lockable device release

Electro-mechanical device related to the interlocking to include locally operated elements. The lockable device release checks the presence of a key and releases the key by command.

2.2.22

RSI_OT_MA

Marker (Sign)

A sign on the side of a rail track that provides information for driver and staff.

2.2.23

RSI_OT_PETC

Passive electronic component of track circuit

Generic passive two-terminal electronic component. e.g. Tuning & matching unit, Outdoor Compensation capacitor, Impedance transformer.

2.2.24

RSI_OT_SCD

Point closure detector

device checking the position of a blade.

2.2.25

RSI_OT_PO

Point machine

The point machine is a device that can switch and lock the turnout and indicate its position.

2.2.26

RSI_OT_PMD

Point machine mounting device

A device used to install a point machine and to connect the point machine to a turnoutcomponents (to fix the point machine and connect it to the turnout)

2.2.27

RSI_OT_RD

Railway detonator

Explosive capsule placed on the rail to give an audible danger signal to driver.

2.2.28

RSI_OT_REL

Relay

1. It is an electromagnetic device that is remotely or automatically controlled to switch on the state of the circuit and converting other devices (such as converters, current circuit breakers) in the same circuit or different circuits. 2. Relays are usually used in automated control circuits. They are actually "automatic switches" that use small currents to control the operation of large currents. It can control multiple loops and multiple control objects, and can also control remote objects. It plays the role of automatic regulation, security protection, conversion circuit and so on in the circuit.

2.2.29

RSI_OT_SI

Signal

Apparatus by means of which a conventional indication is given.

2.2.30

RSI_OT_AS

Signal aspect

Single information shown to the train driver.

2.2.31

RSI_OT_SF

Signal frame

Trackside component most often part of a signal that sends a message to the driver.

2.2.32

RSI_OT_TC

Track Circuit

Electric circuit of which the rails of a track section form a part, with usually a source of current connected at one end and a detection device at the other end for detecting whether this track section is clear or occupied by a vehicle. In a continuous signalling system, the track circuit can be used to transmit information between the ground and the train.

2.2.33

RSI_OT_TVBA

Trackside vehicle barring devices

Device stopping any accidental vehicle movement.

2.2.34

RSI_OT_TVBR

Trackside vehicle braking devices

A train stop is a set of pneumatic, mechanical or electric components causing a breaking in the case the train is passing at danger.

2.2.35

RSI_OT_TR

Transformer

A transformer is an inductance device that transfers electric energy from one circuit to another. It is used for voltage transformation, current change, impedance transformation, isolation, voltage regulation and so on.

2.2.36

RSI_OT_TH

Turnout heating

A series of devices used to remove snow from railways. E.g. electric heating device, sensor of rail temperature, eelectric control cabinet, isolating transformer etc.

2.2.37

RSI_OT_UPS

UPS

Uninterruptible power supply refers to the power supply equipment which will not be interrupted due to short power outages, and can always supply high-quality power, and effectively protect precision instruments. It provides continuous, stable and uninterrupted power supply for load equipment.

2.3

TELECOMS

2.3.1	RTC_OT_ABSTO	Abs_Telecom object	A general telecom object with some general property groups, which can be inherited by its sub-classes.
2.3.2	RTC_OT_AP	Access point	In a network, a point at which wireless devices may connect to the network. Access point allows a Wi-Fi device to connect to a wired network.
2.3.3	RTC_OT_ANE	Anemometrograph	Device used to measure wind speed and direction.
2.3.4	RTC_OT_ANT	Antenna	Antenna is a device that effectively radiates or receives electromagnetic waves, coupling a transmission line to space or other media.
2.3.5	RTC_OT_AG	Automatic gate	An equipment for ticket inspection and processing. Passengers are allowed or forbidden to pass according to the validity of tickets.
2.3.6	RTC_OT_BTS	Base transceiver station	Base transceiver station (BTS) is a network component which serves one cell. It completes the conversion between BSC and wireless channel and realize the wireless transmission and related control functions between BSC and MS through the air interface. BTS has the functions of rate matching, channel coding/decoding, modulation/demodulation and other air interface physical layer.
2.3.7	RTC_OT_BBU	Baseband unit	A component of a distributed base station for implementing baseband processing functions.
2.3.8	RTC_OT_CABLE	Cable	This class collects all the objects which describe type of cables, containing either fiber or copper wire used in telecom or power supply systems. Always contained in a linearly placed object, thus it is generally positioned with respect to local reference.
2.3.9	RTC_OT_CFIT	Cable fitting	Installed in a rack, used for arranging the wires.
2.3.10	RTC_OT_CABAC	Cabling accessory	This class collects all the required accessories in cabling work.
2.3.11	RTC_OT_CLO	Closure	Box to contain a cable junction, a component for the uninterrupted connection of two pipes or cables.
2.3.12	RTC_OT_COAX	Coaxial cable	Coaxial cable, a subtype of copper cable, is a copper cable with a variable number of copper coaxial pair conductors used to transmit data by means of electrical signals, especially at radio frequency.
2.3.13	RTC_OT_COMITF	Communication interface	An interface of an active telecom equipment, used for data input or output. It is a subtype ofconnection interface.
2.3.14	RTC_OT_CON	Connector	Mechanical connector used to couple two cable endpoints, or to connect a cable endpoint to an equipment port. It is the supertype of telecom connector.
2.3.15	RTC_OT_COPCAB	Copper cable	Copper cable is a subtype of telecom cable, with a variable number of copper coaxial conductors or pair conductors used to transmit data by means of electrical signals.
2.3.16	RTC_OT_COPCON	Copper connector	Mechanical connector used to terminate a wire pair end point so as to allow mechanical connection to another connectorized wire pair end point or to a connectorized telecomequipment port. It can realize electric coupling between two wire pair endpoints.
2.3.17	RTC_OT_COPPC	Copper patch cord	Copper patch cord, a subtype of copper cable, is a copper cable capped at either end with copper connectors that allow it to be rapidly and conveniently connected to other cable or to distribution panels.
2.3.18	RTC_OT_COPSPCAB	Copper symmetric pair cable	Telecom copper symmetric pair cable, a subtype of copper cable is a copper cable with a variable number of copper twisted symmetric pair conductors used to transmit data by means of electrical signals.
2.3.19	RTC_OT_DTU	Data transmission unit	Device used to transfer data to on-site control unit, which can be fixed near the rain gauge, snow depth meter, foreign object dual power network sensor or earthquake accelerometer. The data are amplified and modulated and then sent to the on-site unit.
2.3.20	RTC_OT_DCONS	Desktop console	A desktop terminal equipment used by railway dispatching system, mainly realizing dispatching voice communication.
2.3.21	RTC_OT_DF	Distribution frame	Distribution frame is used to interconnect and manage wiring between active equipment and subscriber.
2.3.22	RTC_OT_DPORT	Distribution port	Port of distribution frame.
2.3.23	RTC_OT_DUC	Duct	A concrete/metallic/plastic duct that contains tubes and/or cables.
2.3.24	RTC_OT_eNB	E-utran node B	An eNB is a logical network component which serves one or more E-UTRAN cells. It is the hardware connected to the EPC (Evolved Packet Core), more specifically to the MME (Mobility Management Entity), which communicates directly with UEs (User Equipment) in wireless way. On the basis of the original functions of Node B, eNB added the physical layer, MAC layer, RRC, scheduling, access control, load bearing control, mobility management and wireless resource management of adjacent cells of RNC, providing functions equivalent to the original RLC/MAC/PHY and RRC layer.
2.3.25	RTC_OT_EA	Earthquake accelerometer	Device used to detect the seismic wave and measure the seismic intensity in case of earthquake.
2.3.26	RTC_OT_EQAZONE	Equipment access zone	Space that allows to access to the equipment. It is defined by the side, top, rear and front access zones.
2.3.27	RTC_OT_FANO	Fan out	Provide a safe transition from multi-fiber cable units to individual fibers.
2.3.28	RTC_OT_FED	Feeder	Feeder is the radio-frequency transmission line interconnecting an antenna and a transmitteror receiver, it is a subtype of coaxial cable.
2.3.29	RTC_OT_FIB	Fiber	Optical fiber is used in telecommunication systems to transmit data by means of optical signals.
2.3.30	RTC_OT_FEP	Fiber endpoint	The termination point of an optical fiber. Each optical fiber has two termination points.
2.3.31	RTC_OT_FTU	Fiber tube	A very small radius, semi-rigid hollow plastic tube that houses and protects a certain number of optical fibers. An optical fiber cable may contain many loose fiber tubes.
2.3.32	RTC_OT_FOS	Foreign object dual power network sensor	Device which can alarm when foreign objects shock and break the dual power network.
2.3.33	RTC_OT_FSPORT	Front side port	The front side port of the distribution frame.
2.3.34	RTC_OT_GUT	Gutter	Metallic or plastic support for passing cables.
2.3.35	RTC_OT_IPN	IP network equipment	Generic IP network equipment can represent all kind of IP network equipment, which provide IP data transmission channel for telecom subsystems or other subsystems e.g., routers, network switches or firewalls.
2.3.36	RTC_OT_IP	Intelligent peripheral	Under the control of SCP, IP offers a variety of specialized resources according to the corresponding service logical program. And these resources contain the receiver of DTMF(Dual-Tone Multi-Frequency, signal generator, record notice, etc. IP provides dedicated resource functions in the intelligent network, allocates, controls and manages various dedicated resources, communicates with other entities in the network, and completes SRF resource functions as well as the maintenance, management and statistics functions of resources.
2.3.37	RTC_OT_LCX	Leaky coaxial cable	Leaky coaxial cable is a coaxial cable whose outer conductor is not completely closed, it is a subtype of coaxial cable. Part of the electromagnetic energy transmitted along the cable can be radiated or coupled to a wireless transmission system consisting of the outer conductor and the surrounding environment through a slot or gap on the outer conductor or in the opposite direction as mentioned above.
2.3.38	RTC_OT_MAH	Manhole	Concrete covered opening used to install cable junctions or reserve cable.
2.3.39	RTC_OT_MU	Master unit	A component of a repeater for coupling base station signals.
2.3.40	RTC_OT_MOD	Modem	Modem is a device that converts data into a format suitable for a transmission medium which can be copper cables or optical fibers.
2.3.41	RTC_OT_OCU	On-site control unit	Device used to receive monitoring data from data transmission unit and send the monitoring data to central system, usually located in telecom equipment room.
2.3.42	RTC_OT_OADP	Optical adapter	Optical adapter is used to convert one type of optical port to another type of optical port.
2.3.43	RTC_OT_OFC	Optical fiber cable	Cable containing a variable number of optical fibers.
2.3.44	RTC_OT_OFCON	Optical fiber connector	Mechanical connector used to terminate a fiber end point so as to allow mechanical connection to another connectorized fiber end point or to a connectorized telecom equipmentport.
2.3.45	RTC_OT_OFPTC	Optical fiber patch cord	Optical fiber patch cord, a subtype of optical fiber cable, is an optical fiber cable capped at either end with connectors that allow it to be rapidly and conveniently connected to other cable or to distribution panels.
2.3.46	RTC_OT_ONU	Optical network unit	A kind of optical transmission network connection equipment which is installed at user side.
2.3.47	RTC_OT_OPTL	Optical pigtail	Optical pigtail, a subtype of optical fiber cable, is a specific hardware connection used forcable termination. On a fiber pigtail, one end of the wire is simply exposed fiber and the other end has a pre-installed connector on it. Fiber pigtails are commonly spliced onto individual strands of a multi-fiber trunk cable.
2.3.48	RTC_OT_OSP	Optical splitter	A passive device used to split the optical signal.
2.3.49	RTC_OT_POL	Pole	Metallic or concrete pole used to hold up cables or antennas.
2.3.50	RTC_OT_PSITF	Power supply interface	Power supply interface of a telecom active equipment, using which the equipment can be powered through power supply cables.
2.3.51	RTC_OT_PSPORT	Power supply port	A subtype of power supply interface.
2.3.52	RTC_OT_RACK	Rack	Metal frame container for equipment.
2.3.53	RTC_OT_RSIV	Railway self service identity verification gate	Railway Self-service Identity Verification Gate: An equipment for consistency check of tickets, id card and face image. Passengers are allowed or forbid to pass according to the check result.
2.3.54	RTC_OT_RG	Rain gauge	Device used to collect and indicate rainfall related information.
2.3.55	RTC_OT_RSPORT	Rear side port	The rear side port of the distribution frame.
2.3.56	RTC_OT_REC	Recording equipment	Records telephone calls between the railway telephony operators. It also provides the function of archiving and immediate replay. It can support the IP, SIP and RTP protocols.
2.3.57	RTC_OT_RRU	Remote radio unit	A component of a distributed base station that converts digital baseband signals into highfrequency (rf) signals and sends high-frequency (rf) signals to the antenna for radiation.
2.3.58	RTC_OT_RU	Remote unit	Remote unit is used to amplify a base station signal.
2.3.59	RTC_OT_SENSOR	Sensor	Supertype of all different kinds of sensors, collecting different kinds of information.
2.3.60	RTC_OT_SDM	Snow depth meter	Device used to measure the depth of snowfall.
2.3.61	RTC_OT_SRAC	Subrack	Part of a rack.
2.3.62	RTC_OT_TAEQ	Telecom active equipment	This class regroups all the telecommunication equipment that must be powered in order tobe able to function.
2.3.63	RTC_OT_TCAB	Telecom cable	Cable containing either fiber or copper wire used to transmit telecom signals, this class is a supertype of optical fiber cable and copper cable.
2.3.64	RTC_OT_TCON	Telecom connector	Mechanical connector used to couple two telecom cable endpoints or to connect a telecom cable endpoint to a telecom equipment port. This class is a supertype of optical fiber connector and copper cable connector.
2.3.65	RTC_OT_TLAYINF	Telecom laying infrastructure	This class collects all the objects related to laying infrastructure aimed to support or contain cables.
2.3.66	RTC_OT_TLAYINFZONE	Telecom laying infrastructure zone	Space that is reserved for laying telecom cables.
2.3.67	RTC_OT_TO	Telecom outlet	Telecom plug allowing telephone or network access.
2.3.68	RTC_OT_TEL	Telephone	A terminal device that realizes bidirectional voice communication by means of electrical signals.
2.3.69	RTC_OT_TVM	Ticket vending machine	A self-service device with functions of choosing ticket, payment and ticket making etc. With this device, passengers can buy and collect tickets themselves. Ticket vending machine shall provide a stable, reliable, friendly self-service environment for passengers to purchase or collect tickets conveniently and effectively.
2.3.70	RTC_OT_TOW	Tower	Metallic framed structure used to hold antennas or cables.
2.3.71	RTC_OT_TSTEX	Trackside telephony exchange	A device that ensures the routing of trackside telephone calls and communications.
2.3.72	RTC_OT_TRMD	Transceiver module	A device that can convert electric signal to optical signal at the sender, and convert optical signal to electric signal at the receiver.
2.3.73	RTC_OT_TRANS	Transport equipment	Generic transport equipment can represent all kind of transport equipmen, which provides transmission channel for telecom subsystems or other subsystems.
2.3.74	RTC_OT_TUB	Tube	Plastic or metallic tubes that contain cables.
2.3.75	RTC_OT_WP	Wire pair	A pair of conductors contained in a copper cable, the pair is always used together to form a circuit to transmit data by means of electric signals.
2.3.76	RTC_OT_WPEP	Wire pair endpoint	The termination point of a wire pair. Each wire pair has two termination points.
2.3.77	RTC_OT_WCPORT	Wired communication port	Port of a telecom active equipment, used for wired connection.

2.4

ENERGY

2.4.1	REN_OT_EN-10102021	AC control panel	According to different electrical equipment and different power consumption, the AC power distribution panel generally controls the distribution cabinet by a branch switch consisting of a voltmeter, an ammeter, a switch (or an automatic switch), an insurancea signal light, and aline.
2.4.2	REN_OT_EN-1010203020	Actuator	The part of the actuating system to which an external actuating force is applied which used for operating the switches.(IEC 60050-441-15-22)
2.4.3	REN_OT_EN-1010101086	Anchoring bar	Used to connect stay from pole to the foundation.
2.4.4	REN_OT_EN-1010431	Anti trespassing guard	Equipment provided to deter entry to a restricted area, structure or building by an unauthorized person.
2.4.5	REN_OT_EN-1010426	Anti-Fall device	Protection against operator falling.
2.4.6	REN_OT_EN-1010427	AntiClimbing	Protection against climbing.
2.4.7	REN_OT_EN-10102026	Automaton	Self-acting artificial system the behaviour of which is governed either in a stepwise mannerby given decision rules or continuously in time by defined relationships, while the output variables of which are created from its input and state variables.(IEC 60050-351-42-32)
2.4.8	REN_OT_EN-101020432	Autotransformer	A transformer in which at least two windings have a common part (IEC 60050-811-26-03;60050-421-01-11)
2.4.9	REN_OT_EN-1010207011	Auxiliary electric cabinet	Cabnet for different lowvoltage services (signalingtelecom..)
2.4.10	REN_OT_EN-10102070	Auxiliary services	Provide Energy port for different lowvoltage services (signaling, telecom..)
2.4.11	REN_OT_EN-101020433	Auxiliary transformer	In a substation, a transformer intended to provide supply to the auxiliary equipment (IEC60050-605-02-46)
2.4.12	REN_OT_EN-1010101060	Balance weight tensioner	Automatic tensioner attached to a mast to ensure constant tension in conductors by means of balance weights.(UIC R 791-2006)
2.4.13	REN_OT_EN-1010205010	Battery	One or more cells fitted with devices necessary for use, for example case, terminals, marking and protective devices. (IEC 60050-482-01-04)
2.4.14	REN_OT_EN-1010207010	Battery charger	Equipment used to charge the battery, which is storaging electric energy for substation.
2.4.15	REN_OT_EN-1010101038	Bearer Structure	Insure the function of holding registration component in tunnel context.
2.4.16	REN_OT_EN-1010430	Bird protection	Avoid a sitting down of the birds at electrically critical points of the catenary system. Thus the birds are protected against electrical shocks and disturbances by short circuit are avoided.
2.4.17	REN_OT_EN-101020431	Booster transformer	A transformer of which one winding is intended to be connected in series with a circuit in order to alter its voltage and the other winding is an energizing winding (IEC 60050-811-26-0560050-421-01-12)
2.4.18	REN_OT_EN-10106040	Boosting cable	Cable used to connect between rail and return line.
2.4.19	REN_OT_EN-101023	Box type substation	Pre build substation.
2.4.20	REN_OT_EN-10103013	BusBar	A low impedance conductor to which several electric circuits can be separately connected.(IEC 60050-605-02-01)
2.4.21	REN_OT_EN-10103012	Cable	Assembly consisting of: one or more cores, their individual covering(s) (if any), assembly protection (if any), protective covering(s) (if any). (IEC 60050-461-06-01)
2.4.22	REN_OT_EN-10105021	Cable Chamber	An opening to a confined space such as a shaft, utility vault, or large vessel, used as an access point for underground cable, allowing inspection, maintenance and system upgrades. It's also called a manhole.
2.4.23	REN_OT_EN-10105022	Cable Gantry	Horizontal cable supports fixed at one end only, spaced at intervals, on which cables rest.(IEC 60050-826-15-10)
2.4.24	REN_OT_EN-10105020	Cable Sheathing	Flexible accessory or a part of a component placed around the cable to minimize flexing of the cable at the point of entry into the component.
2.4.25	REN_OT_EN-1010101040	Cantilever assembly	Assembly of components attached to the main support structure that supports and registers the overhead contact line.(CENELEC - EN50119) Support consisting of one or more transverse members projecting from a mast orstructure.(IEC 60050-811-33-30/UIC R 791-2006)
2.4.26	REN_OT_EN-1010205011	Capacitor	Assembly of one or more capacitor elements assembled in the same housing with lead terminals.
2.4.27	REN_OT_EN-1010101090	Catenary system	The longitudinal wire that supports the contact wire, including catenary wire dropper and stich wire.
2.4.28	REN_OT_EN-1010101053	Catenary wire	Longtitudinal wire supporting the grooved contact wires either directly or indirectly.(IEC60050-811-33-06/UIC R 791-2006)
2.4.29	REN_OT_EN-101020424	Combined transformer	An instrument transformer consisting of a current and a voltage transformer in the same case(IEC 60050-321-01-03)
2.4.30	REN_OT_EN-1010418	Common protecting facility	Basic protection against electric shock.
2.4.31	REN_OT_EN-10102027	Common supplying	Power distribution facilities for low-voltage equipments or auxillary equipments.
2.4.32	REN_OT_EN-1010206030	Compensator equipment	A device that is used to 'fix' the parameter of electric energy, such as voltage loss, power factor and so on.
2.4.33	REN_OT_EN-1010101052	Contact wire	Electric conductor of an OCL with which the current collectors make contact. Carries the electricity which is supplied to the train by its pantograph. (IEC 60050-811-33-15/UIC R 791-2006)
2.4.34	REN_OT_EN-1010101036	Cross beam	Rigid cross span structures consist of bending resistant beams which are fixed onto the structures either by hinges or by bending resistant joints.(EN 50119) Support consisting of a transverse beam and masts situated on either side of tracks.(IEC60050-811-33-38/UIC R 791-2006)
2.4.35	REN_OT_EN-10106079	Cross bond	Electrical connection intended to connect in parallel the conductors of the return circuit.
2.4.36	REN_OT_EN-101020421	Current transformer	An instrument transformer in which the secondary current, in normal conditions of use, is substantially proportional to the primary current and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections.(IEC 60050-321-02-01)
2.4.37	REN_OT_EN-10102022	DC control panel	A cabinet that distributes and outputs DC power. The complex power distribution panel also configures the battery pack and monitoring unit.
2.4.38	REN_OT_EN-101020434	Decoupler transformer	Phase separation transformer.
2.4.39	REN_OT_EN-1010101057	Dropper	Component used to suspend a registration, an auxiliary catenary or a contact wire from a head-span or a longitudinal catenary wire.(IEC 60050-811-33-22/UIC R 791-2006)
2.4.40	REN_OT_EN-10106074	Earth	Part of the Earth which is in electric contact with an earth electrode and the electric potential of which is not necessarily equal to zero.(IEC 60050-195-01-03)
2.4.41	REN_OT_EN-10106072	Earth Electrode	Conductive part, which may be embedded in a specific conductive medium, e.g. concrete or coke, in electric contact with the Earth.(Grounding rod)(IEC 60050-826-13-05)
2.4.42	REN_OT_EN-10106076	Earth Grid	Part of an earthing arrangement comprising only the earth electrodes and their interconnections.(IEC 60050-826-13-06)
2.4.43	REN_OT_EN-10106070	Earthing circuit	All conductors which form the intended path for the earthing.
2.4.44	REN_OT_EN-10106071	Earthing conductor	Conductor which provides a conductive path, or part of the conductive path, between a given point in a system or in an installation or in equipment and an earth electrode.
2.4.45	REN_OT_EN-10106073	Earthing terminal	Grounding terminal provided on equipment or on a device and intended for the electric connection with the earthing arrangement.
2.4.46	REN_OT_EN-10105019	Electric Gutter	Electrical conduit used to protect and route electrical wiring in a building or structure.
2.4.47	REN_OT_EN-1010207012	Electric distribution board	Electric distribution board used to dispatch electric power.
2.4.48	REN_OT_EN-101020410	Electric power converter	An electrical or electro-mechanical device for converting electric energy from one form to another such as converting between AC and DC; or changing the voltage or frequency; or some combination of these.
2.4.49	REN_OT_EN-10102050	Electric storage device	A Device that stores electric energy.
2.4.50	REN_OT_EN-1010101058	Electrical conductor	A wire or combination of wires not insulated from one another, suitable for carrying an electric current.(IEC 60050-466-01-15)
2.4.51	REN_OT_EN-101030	Electrical connector	Permanent and switched electrical connections are used in the overhead contact line system to provide electrical current transfer.
2.4.52	REN_OT_EN-1010101025	Elementary sector	Smaller catenary element that can be isolated from the elements supervisors by one or more interruption devices.
2.4.53	REN_OT_EN-1010203034	Emergency switch off	Opening operation of a switching device intended to remove electric power from an electrical installation to avert or alleviate a hazardous situation. (IEC 60050-826-17-03)
2.4.54	REN_OT_EN-10102040	Energy conversion device	Electric energy converting device to change the parameter of electrical energy, such as voltage, frequency, and so on.
2.4.55	REN_OT_EN-1010428	Environnemental protection	Equipement and system dedicated to environnement protection.
2.4.56	REN_OT_EN-1010101064	Feeder line	In traction power system, overhead conductors besides overhead contact line include feeder line, reinforcing feeder, return line, positive feeder, protective wire, lightning protective wire, earth wire and so on.
2.4.57	REN_OT_EN-1010101065	Feeder wire	Electrical connection between the contact line and sub-station or the switch station.(IEC60050-811-36-08/UIC R 791-2006)
2.4.58	REN_OT_EN-1010101023	Feeding section	Electric section of the routed fed by individual track feeder circuit-breakers within the area supplied by one or more substation.(IEC 60050-811-36-25)
2.4.59	REN_OT_EN-1010206010	Filters	Linear two-port device designed to transmit spectral components of the input quantity according to a specified law, generally in order to pass the components in certain frequency bands and to attenuate those in other bands (IEC - 151-13-55)
2.4.60	REN_OT_EN-1010203035	Fuse disconnector	A disconnector in which one or more poles have a fuse in series in a composite unit. (IEC60050-441-14-15)
2.4.61	REN_OT_EN-10106075	Ground Bus	Grounding grid consisting of horizontal grounding bodies.
2.4.62	REN_OT_EN-10106077	Ground Module	Grounding Composed of nonmetallic minerals with good conductivity and stability.
2.4.63	REN_OT_EN-1010420	Guard pile	Pile or barrier provided for mechanical protection.
2.4.64	REN_OT_EN-1010206032	High voltage booster (HVB)	Range extender for increasing the voltage supplied so that the spply distance could be extended.
2.4.65	REN_OT_EN-10102028	Human computer interaction terminal	Panel or interface for engineers to control the equipment.
2.4.66	REN_OT_EN-1010101062	Hydraulics tensioner	Automatic tensioner attached to a mast to ensure constant tension in conductors by means of Hydraulics.
2.4.67	REN_OT_EN-1010205012	Inductor	Electrical appliances used in circuits or power systems due to their inductance.(IEC 60050-811-26-19)
2.4.68	REN_OT_EN-101020420	Instrument transformer	A transformer intended to transmit an information signal to measuring instruments, meters and protective or control devices.(IEC 60050-321-01-01)
2.4.69	REN_OT_EN-10103014	Insulated cables	Common insulated cable
2.4.70	REN_OT_EN-1010101083	Insulator	Device intended for electrical insulation and mechanical fixing of equipment or conductors which are subject to electric potential differences.(IEC 60050-471-01-10)
2.4.71	REN_OT_EN-10102029	Interlocking device	A device which makes the operation of a switching device dependent upon the position oroperation of one or more other pieces of equipment. (IEC 60050-441-16-49) Equipment for interdependent liaison between the control levers or the electric control circuits of different apparatus such as points and signals, which makes it impossible to place them in positions which are unsafe.
2.4.72	REN_OT_EN-1010423	Level crossing protection	Equipment dedicated to level crossing protection.
2.4.73	REN_OT_EN-1010415	Lightning arrester	Surge arrestor: Device intended to protect the electrical apparatus from high transient overvoltage and to limit the duration and amplitude of the follow-on current.(UIC R 791-2006)
2.4.74	REN_OT_EN-1010101085	Mooring system	Mooring equipement for overheadline.
2.4.75	REN_OT_EN-1010101072	Natural section insulator	Neutral sections are required as phase separations with a neutral gap, when individual feeder sections are connected to different phases of the national electricity supply grid.
2.4.76	REN_OT_EN-1010101022	Neutral section	Section of a contact line provided with a sectioning at each end to prevent successive electrical sections differing in voltage, phase or frequency being connected together by the passege of current collectors. A length of electrically isolated or non-conducting material incorporated into the contact wire to completely separate electrical sections of OLE. It may take the form of a short insertion in the contact wire or that of an extended overlap.(IEC60050-811-36-16)
2.4.77	REN_OT_EN-10103010	Non insulated conductor	A wire or combination of wires not insulated from one another, suitable for carrying an electric current.(IEC 60050-466-01-15)
2.4.78	REN_OT_EN-1010101039	OCS Suspension	The group which used to support directly contactline, feeder or earthwire, contains all the parts installed between supports and conductors (including insulators).
2.4.79	REN_OT_EN-1010101086-1	OCS fastening	Fastening device that mechanically joins or affixes two or more objects together for OCS equipment.
2.4.80	REN_OT_EN-1010101073	OCS fitting	Clamps and fittings provide the mechanical and structural connection of components and provide electrical connections in contact line systems and within cross-span structures. They have to withstand both operating currents and short-circuit current loads in the energised part of the overhead contact line system. In addition to the mechanical stresses, short-circuit current loads occur in the passive part of the overhead contact line system, at rigid and flexible terminations and also in cross-span equipment.
2.4.81	REN_OT_EN-1010101031	OCS foundation	Construction, usually of concrete or steel, completely or partly buried in the ground on which the support is mounted. The foundation must provide stability to all loads borne by the support.(UIC R 791-2006)
2.4.82	REN_OT_EN-1010101032	OCS supporting elements	Parts which support the conductors and the associated insulators of an OCL.(UIC R 791-2006/IEC 60050-811-33-19)
2.4.83	REN_OT_EN-1010101030	OCS supporting system	Include foundation, supporting elements and suspension.
2.4.84	REN_OT_EN-1010429	Oil retention tray	Retention tray for environnemental protection against oil.
2.4.85	REN_OT_EN-1010101051	Overhead contact line	Contact line placed above the upper limit of the vehicle gauge and supplying vehicles with electrical energy through pantographs.(UIC R 791-2006)
2.4.86	REN_OT_EN-10101010	Overhead contact line system	Contact line above the upper limit of the train using an overhead contact line to supply current for use by traction units.
2.4.87	REN_OT_EN-101014	Overhead line	An electric line whose conductors are supported above ground, generally by means of insulators and appropriate supports.(IEC 60050-466-01-02) Note - Certain overhead lines may also be constructed with insulated conductors.
2.4.88	REN_OT_EN-1010101034	Pole	Vertical support in solid wood, concrete or steel, or of steel lattice construction, with one end planted in the ground at the side of the track, either directly or through a separate base or foundation(IEC 60050-811-33-20) A main vertical support construction with one end embedded in the ground adjacent to the track, tensioning and registion of the OCL. (UIC R 791-2006)
2.4.89	REN_OT_EN-10102010	Power control system	Control the entire network and manage protection control and auxiliaries services of traction power system.
2.4.90	REN_OT_EN-101020	Power supply system	To supply electric traction system from high voltage.
2.4.91	REN_OT_EN-101020430	Power transformer	A static piece of apparatus with two or more windings which, by electromagnetic induction, transforms a system of alternating voltage and current into another system of voltage and current usually of different values and at the same frequency for the purpose of transmitting electrical power (IEC 60050-811-26-01)
2.4.92	REN_OT_EN-1010419	Profile gate	Profile gate.
2.4.93	REN_OT_EN-101040	Protection element	Protection against electric shock for people and equipments.
2.4.94	REN_OT_EN-1010421	Protective barrier	Part providing protection against direct contact from any usual direction of access.(IEC60050-195-06-15)
2.4.95	REN_OT_EN-1010424	Protective boarding	Non-conducting barrier to protect persons from coming into direct contact with the live conductor rail.
2.4.96	REN_OT_EN-1010422	Protective canope	Conductive screen used to separate an electric circuit and/or conductors from hazardouslive-parts.
2.4.97	REN_OT_EN-1010425	Protective obstacle	Part preventing unintentional direct contact, but not preventing direct contact by deliberate action.(IEC 60050-195-06-16)
2.4.98	REN_OT_EN-10106050	Rail joint bond	Conductor ensuring the electrical continuity of rails at a joint.(UIC R 791-2006/IEC 60050-811-35-07)
2.4.99	REN_OT_EN-10102060	Regulating devices	A device that is used to reguate electric energy.
2.4.100	REN_OT_EN-10106060	Return busbar	Busbar in return current circuit.
2.4.101	REN_OT_EN-10106030	Return cable	Insulated return conductor forming part of the return circuit and connecting the rest of the return circuit of the sub-station.(UIC R 791-2006)
2.4.102	REN_OT_EN-10106010	Return circuit	The electric circuit comprising the running rails or a return current rail, their electrical connections and the return cables to the sub-station.(UIC R 791-2006) All conductors which form the intended path for the traction return current and the current under fault conditions Note 1 to entry: The conductors can be for example: running rails; return conductor rails; return conductors; return cables. (IEC 60050-811-35-01)
2.4.103	REN_OT_EN-10106020	Return conductor	Conductor paralleling the track return and connected to the running rails at periodic intercals.(IEC 60050-811-35-13)
2.4.104	REN_OT_EN-1010101043	Rigid support	Method of attaching an overhead contact line rigidly to its supports.(IEC 60050-811-33-32/UIC R 791-2006)
2.4.105	REN_OT_EN-1010206020	Ripple control	The remote control of a switch by electrical impulses.
2.4.106	REN_OT_EN-1010101071	Section insulator	Sectioning point formed by insulators inserted in a continuous run of a contact line, with skids or similar devices to maintain continuous electrical contact with the current collector.(IEC60050-811-36-15)
2.4.107	REN_OT_EN-1010101070	Sectioning device	The division of the contact line into electrical sections, each of which may be isolated from the adjacent sections e.g. by means of a switch.(UIC R 791-2006)
2.4.108	REN_OT_EN-1010101026	Sector	A section of supply zone which can be energized by closing a feeder circuit breaker at the substation.
2.4.109	REN_OT_EN-10105015	Sign and signal	Authorised sign that conveys, to vehicular and pedestrian traffic, a prohibition, restriction, requirement or warning or information.
2.4.110	REN_OT_EN-10103014-1	Solid conductor	A conductor consisting of a single wire.(IEC 60050-466-10-01)
2.4.111	REN_OT_EN-1010101020	Span	1. Overhead contact line from one support or suspension point to the next.(IEC 60050-811-33-40) 2. The part of a line between two consecutive points of support of a conductor.(IEC 60050-466-03-01)
2.4.112	REN_OT_EN-1010412	Spark gap	Device used to connect a circuit to earth in the event of a fault in live circuits.(UIC R 791-2006)
2.4.113	REN_OT_EN-1010101061	Spring tensioner	Automatic tensioner attached to a mast to ensure constant tension in conductors or in crossspan registration cables by means of springs.(UIC R 791-2006)
2.4.114	REN_OT_EN-1010203033	Start and stop equipment	Switch for alternatively closing and opening one or more electric circuits.(IEC 60050-151-12-23)
2.4.115	REN_OT_EN-1010101033	Stay	Rod, wire or cable, with a tensioner, to anchor a mast or a cantilever (IEC 60050-811-33-47/UIC R 791-2006)(tieguy)
2.4.116	REN_OT_EN-1010101056	Stitch wire	The auxiliary wire used in stitched suspension.(IEC 60050-811-33-18/UIC R 791-2006)
2.4.117	REN_OT_EN-10103011	Stranded conductor	A conductor consisting of a number of individual uninsulated wires laid up together in alternating left-hand and right-hand helical layers.(IEC 60050-466-10-03)
2.4.118	REN_OT_EN-101021	Substation	Substation the main function of which is to supply an electric traction system.(IEC 60050-811-36-02)
2.4.119	REN_OT_EN-10102020	Substation control equipment	Equipment used to control operational equipment at a distance using the transmission of information by telecommunication techniques. (IEC 60050-371-01-01)
2.4.120	REN_OT_EN-1010101035	Suffix post	Insure the function of holding registration component in specific condition like tunnel or underbridge.
2.4.121	REN_OT_EN-1010101042	Support bracket	A device designed to carry, through insulators(or no), a set of conductors of overhead line.
2.4.122	REN_OT_EN-1010203024	Switch	Switch for alternatively closing and opening one or more electric circuits (IEC60050-151-12-23)
2.4.123	REN_OT_EN-1010203010	Switch cabinet	In addition to the incoming and outgoing lines, the switchgear is completely enclosed by a grounded metal casing. Switch cabinets/switchgear contain sensitive electrical, electronic and mechanical components to perform control, drive, power supply and safety functions. As a rule, these components are of high quality. Switch cabinets consist of the cabinet housing and door and the interior components (e.g.mounting plates), which generally take the form of drawer units or are mounted on a panel.
2.4.124	REN_OT_EN-10105010	Technical Building	Building on track side dedicated to railways operation.
2.4.125	REN_OT_EN-10102025	Telecom cabinet	Cabinet containing the telecommunication equipment.
2.4.126	REN_OT_EN-10102023	Telecommand	A system sending command to control and monitor the switches and circuit breakers or systems not directly connected (e.g. via wires) within the traction power system remotly.
2.4.127	REN_OT_EN-1010101010	Tensioning section	Length of the overhead contact line between two terminating points.(IEC 60050-811-33-61)
2.4.128	REN_OT_EN-101022	Traction post	Power Supply system
2.4.129	REN_OT_EN-1010	Traction power system	Railway electrical distribution network used to provide energy for rolling stock. (IEC 60050-811-36-21/CENELEC - EN 50122-1) Note 1 to entry: The system includes contact line systems, return circuit of electric traction systems, running rails of non-electric traction systems, which are in the vicinity of, and conductively connected to the running rails of an electric traction system, electrical installations, which are supplied from contact lines either directly or via a transformer, electrical installations in substations, which are utilized solely for distribution of power directly to the contact line, electrical installations of switching stations. (IEC 62128-1:20133.4.1)
2.4.130	REN_OT_EN-10102030	Traction switching equipement	Switching equipment used for traction power, which is usually composed by switch(s), cabinet (might be), instrument tranformer (might be), and other auxillary equipments.
2.4.131	REN_OT_EN-101020435	Traction transformer	A stationary device with two or more windings, in order to transmit electrical energy, converts the AC voltage and current of one system to the AC voltage and current of another system at the same frequency by electromagnetic induction.(GB 1094IEC 60076) Electric energy converter without moving parts that changes voltages and currents associated with electric energy without change of frequency.(IEC 60050)
2.4.132	REN_OT_EN-1010206031	Unbalancing compensator	A device that is used to correct voltage umbalance in the system.
2.4.133	REN_OT_EN-10105018	Underground facility	Cables and other facilities needed to connect OCS to substation and to low voltage services.
2.4.134	REN_OT_EN-10102024	Unitary control element	A unitary control element combines a number of control components into a single product, such as a thermostat or humidistat. A unitary control element provides a housing for an aggregation of control or electrical distribution elements that, in combination, perform a singular (unitary) purpose. Each item in the aggregation may have its own geometric representation and location. (IFC4)
2.4.135	REN_OT_EN-1010410	Varistor	Resistor the resistance of which is strongly varying with the applied voltage.(IEC 60050-151-13-23)
2.4.136	REN_OT_EN-1010413	Voltage limiter	Over voltage protection facilities.
2.4.137	REN_OT_EN-101020422	Voltage transformer	An instrument transformer in which the secondary voltage, in normal conditions of use, is substantially proportional to the primary voltage and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections.(IEC 60050-321-03-01)
2.4.138	REN_OT_EN-101020423	Voltmetric relay	A relay device used to observe the voltage level and disconnect the circuit from the supply if any variations are occurs from the standard range.
2.4.139	REN_OT_EN-10106078	Structure earth	Construction made of metallic parts or construction including interconnected metallic structural parts, which can be used as an earth electrode.

IFC for Rail ontology is being developed by Building Smart as a OpenBIM standard

Data Dictionary

IFC Ontology