International

Electrotechnical

Commission

Area: 811: Electric traction Index language:

Section 811-01: General terms
	811-01-01	electric traction
	811-01-02	DC traction
	811-01-03	single-phase AC traction
	811-01-04	three-phase AC traction
	811-01-05	thermo-electric traction
	811-01-06	battery-electric traction
	811-01-07	stored kinetic energy traction
	811-01-08	train
	811-01-09	high speed line
	811-01-10	maximum line speed
Section 811-02: Types of vehicle
	811-02-01	rolling stock
	811-02-03	motor vehicle
	811-02-04	traction unit
	811-02-05	traction fleet
	811-02-06	locomotive
	811-02-07	motor coach
	811-02-08	motor luggage van
	811-02-09	train-unit
	811-02-10	trailer
	811-02-11	non-driving motor vehicle
	811-02-12	multiple unit train
	811-02-13	articulated unit
	811-02-14	driving trailer
	811-02-15	power car
	811-02-16	push-pull train
	811-02-17	shunting locomotive
	811-02-18	hump locomotive
	811-02-19	industrial locomotive
	811-02-20	small-power locomotive
	811-02-21	mine locomotive
	811-02-22	barge tractor
	811-02-23	twin motor vehicle
	811-02-24	triple motor vehicle
	811-02-25	DC motor vehicle
	811-02-26	single-phase AC motor vehicle
	811-02-27	three-phase AC motor vehicle
	811-02-28	dual voltage motor vehicle
	811-02-29	dual frequency motor vehicle
	811-02-30	dual system motor vehicle
	811-02-31	multi-system motor vehicle
	811-02-32	diesel-electric motor vehicle
	811-02-33	turbine motor vehicle, <electric transmission>
	811-02-34	rack motor vehicle
	811-02-35	coupled-axle locomotive
	811-02-36	individual axle drive locomotive
	811-02-37	magnetically supported vehicle
	811-02-38	air-cushion vehicle
	811-02-39	inertia storage vehicle by a flywheel
	811-02-40	battery-electric road vehicle
	811-02-41	electric tramcar
	811-02-42	electric tramway
	811-02-43	trolleybus, <vehicle>
	811-02-44	driver's cab
	811-02-45	driving position
	811-02-46	shunting control position
	811-02-47	guard's position
	811-02-48	trolleybus, <transport system>
Section 811-03: Traffic and train loads
	811-03-01	traffic, <in railways>
	811-03-02	total gross traffic
	811-03-03	gross traffic hauled
	811-03-04	net traffic
	811-03-05	payload, <of a train>
	811-03-06	normal load, <of a train-unit>
	811-03-07	crush load, <of a train-unit>
	811-03-08	trailing load
	811-03-09	total gross load, <of a train>
	811-03-10	normal load, <of a motor vehicle>
	811-03-11	maximum load, <of a motor vehicle>
Section 811-04: Methods of use
	811-04-01	empty running
	811-04-02	light running
	811-04-03	coasting
	811-04-04	assisted operation
	811-04-05	double heading
	811-04-06	banking
	811-04-07	multiple unit operation
	811-04-08	propelling movement
	811-04-09	push-pull operation, <in railways>
	811-04-10	radio control
	811-04-11	driving
	811-04-12	manual operation, <in railways>
	811-04-14	single-manning
	811-04-15	one man operation
Section 811-05: Train movement
	811-05-01	total train resistance
	811-05-02	specific resistance
	811-05-03	specific rolling resistance
	811-05-04	specific resistance due to curves
	811-05-05	specific air resistance
	811-05-06	specific resistance on inclined track gradient
	811-05-07	allowance for rotating parts
	811-05-08	breakaway force
	811-05-09	accelerating force
	811-05-10	decelerating force
	811-05-11	residual acceleration
	811-05-12	starting, <of a vehicle>
Section 811-06: Braking
	811-06-01	braking system
	811-06-02	brake type
	811-06-03	combined braking
	811-06-04	composite braking
	811-06-05	blended braking
	811-06-06	substitutional braking
	811-06-07	holding brake
	811-06-08	retarding brake
	811-06-09	stopping brake
	811-06-10	automatic spot brake
	811-06-11	emergency brake
	811-06-12	parking brake, <of a vehicle>
	811-06-13	anti-slip brake
	811-06-14	mechanical braking
	811-06-15	compressed air brake
	811-06-16	vacuum brake
	811-06-17	handbrake
	811-06-18	electrically released spring brake
	811-06-19	electro-magnetic braking
	811-06-20	electro-magnetic friction braking
	811-06-21	electro-magnetic track brake
	811-06-22	solenoid braking
	811-06-23	electric braking
	811-06-24	electro-dynamic braking
	811-06-25	regenerative braking, <of a vehicle>
	811-06-26	resistance braking
	811-06-27	electro-dynamic braking independent of line supply
	811-06-28	electro-dynamic braking dependent on line supply
	811-06-29	electric induction braking
	811-06-30	brake control
	811-06-31	electro-pneumatic brake control
	811-06-32	electro-vacuum brake control
	811-06-33	automatic load compensation
	811-06-34	electrically controlled brake
	811-06-35	braking force
	811-06-36	holding brake force
	811-06-37	braking characteristic
	811-06-38	stable characteristic
	811-06-39	unstable characteristic
	811-06-40	critical speed in resistance braking
	811-06-41	mean deceleration as a function of time
	811-06-42	effective deceleration as a function of distance
	811-06-43	stopping distance
	811-06-44	response time, <of braking>
	811-06-45	braking response
	811-06-46	magnet valve
	811-06-47	variable magnet valve
	811-06-48	anti-slip magnet valve
	811-06-49	pressure switch
Section 811-07: Adhesion
	811-07-01	adhesion, <of wheels>
	811-07-02	factor of adhesion
	811-07-03	anti-slip device
	811-07-04	wheel slide protection device
	811-07-05	weight transfer
	811-07-06	weight transfer compensation device
	811-07-07	creep
Section 811-08: Riding quality
	811-08-01	riding quality
	811-08-02	fore-and-aft oscillation
	811-08-03	lateral oscillation
	811-08-04	bouncing
	811-08-05	nosing
	811-08-06	pitching
	811-08-07	rolling
Section 811-09: Gauges
	811-09-01	gauge
	811-09-02	conductor rail gauge
	811-09-03	pantograph clearance gauge
	811-09-04	electrification clearance gauge
	811-09-05	electrical clearance, <of a contact line>
	811-09-06	kinematic envelope
	811-09-07	swept envelope
Section 811-10: Test categories
	811-10-01	acceptance test
	811-10-02	running test
	811-10-03	stationary test
	811-10-04	type test
	811-10-05	routine test
	811-10-06	sampling test
	811-10-07	investigation test
Section 811-11: Performance of electric motor vehicles
	811-11-01	nominal value
	811-11-02	rated value
	811-11-03	rating
	811-11-04	rating of an electric vehicle
	811-11-05	continuous rating
	811-11-06	short-duration rating
	811-11-07	intermittent rating
	811-11-08	continuous quantity
	811-11-09	short-duration quantity
	811-11-10	balancing speed
	811-11-11	average speed between stops
	811-11-12	schedule speed
	811-11-13	maximum speed, <of a vehicle>
	811-11-14	speed at end of notching
	811-11-15	base speed
	811-11-16	speed restriction
	811-11-17	speed ratio
	811-11-18	tractive effort, <at the wheel rim>
	811-11-19	draw-bar pull
	811-11-20	output of a motor vehicle
	811-11-21	output at the wheel rim
	811-11-22	output at the draw-bar
	811-11-23	specific output
	811-11-24	specific energy consumption of an electric vehicle
	811-11-25	tare mass of a vehicule
	811-11-26	mass in working order
	811-11-27	axle load
	811-11-28	adhesive weight
	811-11-29	weight per metre run over buffers
	811-11-30	weight per metre run between outer axles
	811-11-31	maximum concentrated weight per metre
	811-11-32	peak value, <in electric traction>
	811-11-33	value before notching
	811-11-34	selected value
	811-11-35	performance range
	811-11-36	operation range
Section 811-12: Traction motors
	811-12-01	traction motor
	811-12-02	double motor
	811-12-03	tandem motor
	811-12-04	double commutator motor
	811-12-05	totally-enclosed motor
	811-12-06	ventilated motor
	811-12-07	ventilated totally-enclosed motor
	811-12-08	self-ventilated motor
	811-12-09	force-ventilated motor
	811-12-10	motor with combined ventilation
	811-12-11	axial ventilation
	811-12-12	radial ventilation
	811-12-13	series motor
	811-12-14	shunt motor
	811-12-15	separately excited motor
	811-12-16	compound motor
	811-12-17	compensated motor
	811-12-18	direct current motor
	811-12-19	single-phase motor
	811-12-20	undulating current motor
	811-12-21	pulsed current motor
	811-12-22	three-phase motor
	811-12-23	polyphase motor
	811-12-24	synchronous motor
	811-12-25	asynchronous motor
	811-12-26	full voltage motor
	811-12-27	half-voltage motor
	811-12-28	third-voltage motor
	811-12-29	simulated series motor
Section 811-13: Traction motor characteristic values
	811-13-01	motor characteristics, pl
	811-13-02	speed, <of a vehicle>
	811-13-03	speed, <of a rotating machine>
	811-13-04	overspeed, <of a rotating electric machine>
	811-13-05	motoring torque
	811-13-06	starting torque, <of a traction motor>
	811-13-07	peak torque
	811-13-08	braking torque, <of a traction motor>
	811-13-09	maximum output
	811-13-10	starting current, <of a traction motor>
	811-13-11	peak current, <of a traction motor>
	811-13-12	maximum voltage
	811-13-13	minimum voltage
	811-13-14	undulating voltage
	811-13-15	pulsed voltage
	811-13-16	transformer e.m.f., <in an alternating or undulating or pulsed current commutator motor>
	811-13-17	mean voltage between segments, <in a commutator machine>
	811-13-18	maximum voltage between segments, <in a commutator machine>
	811-13-19	full field
	811-13-20	weak field
	811-13-21	maximum field
	811-13-22	minimum field
	811-13-23	forced field
	811-13-24	field-weakening ratio
	811-13-25	effective field ratio
	811-13-26	flexibility ratio
	811-13-27	main flux
	811-13-28	electric loading
	811-13-29	peripheral speed
	811-13-30	temperature rise limit
	811-13-31	limiting temperature, <of an electric traction motor>
	811-13-32	ambient air temperature, <for an electric traction motor>
	811-13-33	class of insulation
	811-13-34	self-excitation, <in electric braking>
	811-13-35	pre-excitation
	811-13-36	black commutation
	811-13-37	black-band test
	811-13-38	flashover, <in an electric traction motor>
	811-13-39	guaranteed rating
Section 811-14: Principal parts of rotating electrical machines
	811-14-01	stator
	811-14-02	frame, <of a rotating electric machine>
	811-14-03	solid frame
	811-14-04	laminated frame, <of a rotating electric machine>
	811-14-05	lamination, <of a stator or rotor>
	811-14-06	main pole
	811-14-07	interpole
	811-14-08	rotor
	811-14-09	armature, <of a rotating electric machine> US
	811-14-10	armature, <of a rotor> GB
	811-14-11	field system, <of a rotating electric machine>
	811-14-12	air gap, <of a rotating machine>
	811-14-13	spider, <of a rotating electric machine>
	811-14-14	slot, <of a rotating electric machine>
	811-14-15	commutator
	811-14-16	commutator segment
	811-14-17	commutator segment insulation
	811-14-18	commutator riser
	811-14-19	brush
	811-14-20	brush holder
	811-14-21	brush ring
	811-14-22	slip-ring
	811-14-23	end shield
	811-14-24	bearing shield
	811-14-25	suspension bracket
	811-14-26	motor suspension bearing for nose-suspended motor
	811-14-27	motor connection box
	811-14-28	armature winding, <of an electric machine>
	811-14-29	field winding
	811-14-30	compensating winding
	811-14-31	commutating winding
	811-14-32	starting winding
Section 811-15: Axle drives
	811-15-01	axle-hung motor
	811-15-02	frame-mounted motor
	811-15-03	bogie-mounted motor
	811-15-04	underframe-mounted motor
	811-15-05	longitudinally mounted motor
	811-15-06	flexible drive
	811-15-07	unilateral transmission
	811-15-08	bilateral transmission
	811-15-09	individual drive
	811-15-10	coupled axle drive
	811-15-11	rod drive
	811-15-12	monomotor drive
	811-15-13	quill drive
	811-15-14	hollow shaft motor drive
	811-15-15	spring drive
	811-15-16	rubber spring drive
	811-15-17	cardan-shaft drive
	811-15-18	floating ring drive
	811-15-19	gearless drive
	811-15-20	solid gearing
	811-15-21	resilient gearing
	811-15-22	unilateral gearing
	811-15-23	bilateral gearing
	811-15-24	single-reduction gearing
	811-15-25	double-reduction gearing
	811-15-26	worm gear
	811-15-27	intermediate-wheel gearing
	811-15-28	right-angled drive
	811-15-29	gear case
	811-15-30	combined rack and adhesion drive
	811-15-31	clearance underneath the gear case
	811-15-32	gear centre distance
	811-15-33	unsprung mass
Section 811-16: Linear traction motors
	811-16-01	linear traction motor
	811-16-02	linear synchronous motor
	811-16-03	linear induction motor
	811-16-04	field system, <of a linear traction motor>
	811-16-05	single-sided field system
	811-16-06	double-sided field system
	811-16-07	armature of a linear traction motor
	811-16-08	reaction rail
	811-16-09	thrust of a linear traction motor
	811-16-10	vertical force
	811-16-11	synchronous speed of a linear traction motor
	811-16-12	edge effect, <for an electric machine>
	811-16-13	end effect, <for an electric machine>
	811-16-14	magnetic drag
	811-16-15	slip of a linear traction asynchronous motor
	811-16-16	linear reluctance motor
	811-16-17	air gap of a linear traction motor
	811-16-18	short primary type
	811-16-19	electromagnetic suspension
Section 811-17: Thermo-electric vehicles
	811-17-01	nominal power of a thermo-electric vehicle
	811-17-02	useful service output of an internal combustion engine
	811-17-03	maximum service output of an internal combustion engine
	811-17-04	international rated output of an internal combustion engine
	811-17-05	continuous power of an internal combustion engine
	811-17-06	overload power of an internal combustion engine
	811-17-07	traction output of a thermo-electric vehicle
	811-17-08	dimensional output
	811-17-09	automatic load regulation equipment
	811-17-10	automatic field-weakening
	811-17-11	transmission efficiency of a thermo-electric vehicle
	811-17-12	specific fuel consumption of a thermo-electric vehicle
	811-17-13	minimum idling speed
	811-17-14	idling speed
	811-17-15	firing speed
	811-17-16	overspeed, <of an internal combustion engine>
	811-17-17	rated speed
	811-17-18	breakaway torque
	811-17-19	firing torque
	811-17-20	starting up
	811-17-21	magnetic coupling, <for an internal combustion engine>
	811-17-22	electric transmission
	811-17-23	runaway speed of a motor-generator set
Section 811-18: Generators for thermo-electric vehicles
	811-18-01	DC main generator
	811-18-02	main alternator
	811-18-03	asynchronous generator, <for an electric machine>
	811-18-04	train power supply generator
	811-18-05	heating generator
	811-18-06	exciter, <for a main generator or alternator>
	811-18-07	shaft-end mounted exciter
	811-18-08	independently driven exciter
Section 811-19: Main and auxiliary converters
	811-19-01	convertor
	811-19-02	main convertor
	811-19-03	auxiliary convertor
	811-19-04	rotating convertor
	811-19-05	electronic convertor
	811-19-06	phase convertor
	811-19-07	frequency convertor, <of alternating current>
	811-19-08	fixed frequency convertor
	811-19-09	variable frequency convertor
	811-19-10	DC convertor
	811-19-11	chopper
	811-19-12	rectifier
	811-19-13	inverter, <static>
	811-19-14	motor-generator set
	811-19-15	auxiliary generator set
	811-19-16	dynamic brake exciter
Section 811-20: Batteries
	811-20-04	operating range, <of an electric vehicle fed by a battery>
	811-20-06	charge, <of a cell or battery>
	811-20-07	operating cycle, <of a cell or battery>
	811-20-08	automatic charge
Section 811-21: Compressors and pumps
	811-21-01	compressor, <of air>
	811-21-02	compressor unit
	811-21-03	auxiliary compressor
	811-21-04	reciprocating compressor
	811-21-05	rotary compressor
	811-21-06	exhauster
	811-21-07	oil pump
	811-21-08	manual air pump
Section 811-22: Air cooling
	811-22-01	blower
	811-22-02	fan set
	811-22-03	radial flow fan
	811-22-04	axial flow fan
	811-22-05	natural ventilation, <in a vehicle>
	811-22-06	forced ventilation
	811-22-07	self-ventilation
Section 811-23: Lighting, heating and air conditioning
	811-23-01	multiple coach lighting
	811-23-02	individual coach lighting
	811-23-03	emergency lighting
	811-23-04	headlamp
	811-23-05	lighting dynamo
	811-23-06	air conditioning
	811-23-07	pre-heating of a vehicle
	811-23-08	pre-cooling
	811-23-09	energy-supply station
	811-23-10	heating contactor
	811-23-11	heating train line
	811-23-12	heating jumper
	811-23-13	defroster
	811-23-14	demister
Section 811-24: Measurement of train speed
	811-24-01	axle-driven generator
	811-24-02	tacho-generator
	811-24-03	tachograph
	811-24-04	speedometer
	811-24-05	tachometer
	811-24-06	speed detecting element
	811-24-07	radar speedometer
Section 811-25: Circuits and circuit elements
	811-25-01	high-voltage circuit
	811-25-02	low-voltage circuit
	811-25-03	power circuit
	811-25-04	braking circuit
	811-25-05	auxiliary circuit, <of a train>
	811-25-06	train power supply circuit
	811-25-07	heating circuit
	811-25-08	lighting circuit
	811-25-09	battery circuit
	811-25-10	starting circuit
	811-25-11	instrument circuit
	811-25-12	control circuit, <of a train>
	811-25-13	interlock circuit
	811-25-14	indicating circuit
	811-25-15	protective circuit
	811-25-16	audio-communication circuit
	811-25-17	supply detection circuit
	811-25-18	multiplexing
	811-25-19	electro-pneumatic brake circuit
	811-25-20	cab cable, <of train lines>
	811-25-21	train line
	811-25-22	bus line
	811-25-23	control train line
	811-25-24	electric coupler
	811-25-25	jumper cable, <between vehicles>
	811-25-26	earth-return brush
	811-25-27	electric automatic coupler
	811-25-28	auxiliary equipment
Section 811-26: Power transformers and reactors
	811-26-01	power transformer
	811-26-02	transformer with radially laminated core
	811-26-03	auto-transformer
	811-26-04	regulating transformer
	811-26-05	booster transformer
	811-26-06	tapped transformer
	811-26-07	oil-immersed type transformer
	811-26-08	dry-type transformer
	811-26-09	primary winding, <in electric traction>
	811-26-10	secondary winding
	811-26-11	train heating winding
	811-26-12	auxiliary winding, <of an electric traction transformer>
	811-26-13	regulating winding
	811-26-14	tapping point
	811-26-15	concentric windings
	811-26-16	sandwich windings, pl
	811-26-17	natural circulation
	811-26-18	forced circulation
	811-26-19	inductor
	811-26-20	transition inductor
	811-26-21	smoothing inductor
	811-26-22	earthing inductor
	811-26-23	braking inductor
	811-26-24	inductive shunt
	811-26-25	transductor
	811-26-26	saturable inductor
	811-26-27	air-cored inductor
	811-26-28	magnetic circuit, <of a transformer>
	811-26-29	magnetic core
	811-26-30	yoke, <of a transformer, electro-magnet, relay or other device>
	811-26-31	tank
	811-26-32	oil conservator
	811-26-33	breather
	811-26-34	drier
	811-26-35	radiator
	811-26-36	AC inductance
	811-26-37	traction converter transformer
	811-26-38	traction inverter transformer
Section 811-27: Resistors and capacitors
	811-27-01	starting resistor
	811-27-02	braking resistor
	811-27-03	transition resistor
	811-27-04	shunt resistor
	811-27-05	charging resistor
	811-27-06	damping resistor
	811-27-07	excitation resistor
	811-27-08	stabilizing resistor
	811-27-09	regulating resistor
	811-27-10	potentiometer
	811-27-11	resistor element
	811-27-12	resistor case
	811-27-13	resistor block
	811-27-14	resistor section
	811-27-15	double insulation
	811-27-16	non-linear resistor
	811-27-17	smoothing capacitor
	811-27-18	starting capacitor
	811-27-19	commutation capacitor, <in a convertor arm>
	811-27-20	protective capacitor
	811-27-21	line series capacitor
	811-27-22	power factor correction capacitor
Section 811-28: Electronics
	811-28-01	electronics, <in electric traction>
	811-28-02	power electronics
	811-28-03	control electronics
	811-28-04	controlled rectifier
	811-28-05	semi-conductor rectifier
	811-28-07	ignitron
	811-28-08	excitron
	811-28-09	single-way connection, <of a convertor>
	811-28-10	double-way connection, <of a convertor>
	811-28-11	single-phase bridge rectifier
	811-28-12	three-phase bridge rectifier
	811-28-13	controlled bridge
	811-28-14	symmetric half-controlled bridge
	811-28-15	asymmetric half-controlled bridge
	811-28-16	asymmetric bridge with external commutation "out"
	811-28-17	bridges in cascade
	811-28-18	anti-parallel connection
	811-28-19	commutation, <in an electronic power converter>
	811-28-20	external commutation
	811-28-21	angle of overlap
	811-28-22	phase control
	811-28-23	current delay angle
	811-28-24	phase control factor
	811-28-25	non-conducting interval, <of an arm>
	811-28-26	reverse blocking interval
	811-28-27	off-state interval
	811-28-28	conducting direction, <of a rectifier element>
	811-28-29	inverse direction, <of a rectifier element>
	811-28-30	firing
	811-28-31	extinction
	811-28-32	ripple harmonics of a rectifier
	811-28-33	ripple voltage
	811-28-34	DC ripple factor
	811-28-35	breakthrough
	811-28-36	firing failure
	811-28-37	commutation failure
	811-28-38	load cycle
Section 811-29: Switchgear
	811-29-01	circuit-breaker
	811-29-02	oil circuit-breaker
	811-29-03	gas-blast circuit-breaker
	811-29-04	air-blast circuit-breaker
	811-29-05	vacuum circuit-breaker
	811-29-06	DC high-speed circuit-breaker
	811-29-07	mechanical contactor
	811-29-08	line, adj
	811-29-09	electro-magnetic contactor
	811-29-10	electro-pneumatic contactor
	811-29-11	camshaft contactor
	811-29-12	tapping contactor
	811-29-13	transition contactor
	811-29-14	braking contactor
	811-29-15	earthing contactor
	811-29-16	contactor group
	811-29-17	disconnector
	811-29-18	short-circuiting device
	811-29-19	switchgroup
	811-29-20	power switchgroup
	811-29-21	traction motor isolating switch
	811-29-22	reverser
	811-29-23	disconnecting switch reverser
	811-29-24	resistance switchgroup
	811-29-25	transition switchgroup
	811-29-26	field-weakening switchgroup
	811-29-27	power controller
	811-29-28	on-load tap-changer, <for traction circuits>
	811-29-29	control switchgroup
	811-29-30	manual switchgroup
	811-29-31	motor-driven switchgroup
	811-29-32	drum controller
	811-29-33	cam group
	811-29-34	interlocking switchgroup
	811-29-35	motor-driven controller
	811-29-36	master controller
	811-29-37	system changeover switch
	811-29-38	power/brake changeover switch
	811-29-39	standby hand control
	811-29-40	sequence chart
	811-29-41	voltage-limiting device
	811-29-42	semiconductor circuit-breaker
	811-29-43	cut off current characteristic
	811-29-44	release, <for a circuit-breaker>
Section 811-30: Control equipment
	811-30-01	automatic traction control equipment
	811-30-02	directly controlled equipment
	811-30-03	contactor equipment
	811-30-04	individual contactor equipment
	811-30-05	motor-driven camshaft equipment
	811-30-06	variable voltage control
	811-30-07	frequency control
	811-30-08	pole-changing control
	811-30-09	resistance control
	811-30-10	auxiliary transformer regulation
	811-30-11	chopper control
	811-30-12	voltage phase control
	811-30-13	high-voltage regulation
	811-30-14	low-voltage regulation
	811-30-15	continuous control
	811-30-16	motor combination
	811-30-17	combination transition
	811-30-18	shunt transition
	811-30-19	bridge transition
	811-30-20	balanced bridge transition
	811-30-21	field shunting
	811-30-22	field-weakening by tapping
	811-30-23	combined field-weakening
	811-30-24	auxiliary pole shunting
	811-30-25	notching ratio
	811-30-26	progression of equipment
	811-30-27	run-back of equipment
	811-30-28	notch
	811-30-29	accelerating relay
	811-30-30	electrical interlocks
	811-30-31	locking contact
	811-30-32	control equipment, <in electric traction>
Section 811-31: Auxiliary and protective equipment
	811-31-01	repeater, <in electric traction>
	811-31-02	annunciator
	811-31-03	make contact
	811-31-04	break contact
	811-31-05	indicator, <in electric traction>
	811-31-06	indicator light
	811-31-07	pilot lamp
	811-31-08	driver's safety device
	811-31-09	lightning arrester
	811-31-10	overvoltage protector
	811-31-11	high-voltage fuse
	811-31-12	overcurrent relay
	811-31-13	overvoltage relay
	811-31-14	no-volt relay
	811-31-15	earth fault relay, <in electric traction>
	811-31-16	differential relay, <in electric traction>
Section 811-32: Current collection
	811-32-01	current collector
	811-32-02	pantograph
	811-32-03	bow, <in general usage>
	811-32-04	bow, <in tramways>
	811-32-05	pantograph head
	811-32-06	contact strip
	811-32-07	horn, <of a pantograph>
	811-32-08	trolley
	811-32-09	trolley-wheel
	811-32-10	trolley-shield
	811-32-11	contact slipper
	811-32-12	trolley-head
	811-32-13	trolley-pole
	811-32-14	trolley-base
	811-32-15	trolley-pivot
	811-32-16	ropewinder
	811-32-17	pole retriever
	811-32-18	pole hook
	811-32-19	shoegear
	811-32-20	collector shoe
	811-32-21	pantograph cylinder
	811-32-22	pantograph dropping device
	811-32-23	working height
	811-32-24	pantograph bounce
	811-32-25	pantograph damper
	811-32-26	pantograph contact pressure
	811-32-27	pantograph sway
	811-32-28	pantograph head length
	811-32-29	pantograph head width
	811-32-30	pantograph head height
	811-32-31	length of contact strips
Section 811-33: Overhead contact line equipment
	811-33-01	contact line
	811-33-02	overhead contact line
	811-33-03	single tramway equipment
	811-33-04	double tramway equipment
	811-33-05	overhead contact line with catenary suspension
	811-33-06	catenary wire
	811-33-07	main catenary wire
	811-33-08	auxiliary catenary wire
	811-33-09	simple catenary equipment with single contact wire
	811-33-10	simple catenary equipment with twin contact wires
	811-33-11	double catenary equipment
	811-33-12	compound catenary equipment
	811-33-13	inclined catenary
	811-33-14	polygonal equipment
	811-33-15	contact wire
	811-33-16	by-pass feeder
	811-33-17	stitched catenary suspension
	811-33-18	stitch wire
	811-33-19	supports, <in electric traction> pl
	811-33-20	mast, <in electric traction>
	811-33-21	stagger
	811-33-22	dropper, <of overhead contact line>
	811-33-23	contact wire splice
	811-33-24	suspension clamp, <of overhead contact line>
	811-33-25	connector, <of electric conductors>
	811-33-26	termination fitting
	811-33-27	pin insulator, <in electric traction>
	811-33-28	suspension insulator, <in electric traction>
	811-33-29	strain insulator, <in electric traction>
	811-33-30	cantilever, <in electric traction>
	811-33-31	hinged cantilever
	811-33-32	rigid support
	811-33-33	flexible support
	811-33-34	cross-span
	811-33-35	pull-off
	811-33-36	registration arm
	811-33-37	steady arm
	811-33-38	portal structure, <in electric traction>
	811-33-39	head-span suspension
	811-33-40	span, <of overhead contact line>
	811-33-41	overhead crossing
	811-33-42	frog, <for tramway or trolleybus>
	811-33-43	cross-over junction, <for tramway or trolleybus>
	811-33-44	tangential junction, <for tramway or trolleybus>
	811-33-45	tensioner
	811-33-46	automatic tensioner
	811-33-47	stay, <in electric traction>
	811-33-48	balance weight tensioner
	811-33-49	auto-tensioned conductor
	811-33-50	fixed termination conductor
	811-33-51	hard spot
	811-33-52	system height
	811-33-53	lateral elasticity
	811-33-54	vertical elasticity
	811-33-55	catenary sag
	811-33-56	contact wire sag
	811-33-57	contact wire pre-sag
	811-33-58	lightning protection cable, <in electric traction>
	811-33-59	contact line system
	811-33-60	reinforcing feeder
	811-33-61	tension length
	811-33-62	contact wire height
	811-33-63	nominal contact wire height
	811-33-64	minimum contact wire height
	811-33-65	maximum contact wire height
Section 811-34: Conductor rails
	811-34-01	conductor rail
	811-34-06	conductor rail gap
	811-34-07	conductor rail ramp
	811-34-08	conductor rail anchor
	811-34-09	track jumper cable
	811-34-10	return conductor rail
Section 811-35: Return current circuits
	811-35-01	return circuit
	811-35-02	track return system
	811-35-03	insulated return system
	811-35-04	return cable
	811-35-05	stray current, <in electric traction>
	811-35-07	rail joint bond
	811-35-08	welded bond
	811-35-09	pin-type bond
	811-35-10	electrical rail joint
	811-35-11	insulated rail joint
	811-35-12	earth wire, <in electric traction>
	811-35-13	return conductor
	811-35-14	closed formation
	811-35-15	open formation
Section 811-36: Electricity supply system
	811-36-01	feeding system
	811-36-02	traction substation, <in electric traction>
	811-36-03	transformer substation, <in electric traction>
	811-36-04	rectifier substation
	811-36-05	mobile substation
	811-36-06	receptive substation
	811-36-07	feeder station
	811-36-08	feeder, <in electric traction>
	811-36-09	line feeder
	811-36-10	sectioning
	811-36-11	sectioning point
	811-36-12	auto-transformer substation, <in electric traction>
	811-36-13	track sectioning cabin, <in electric traction>
	811-36-14	insulated overlap
	811-36-15	section insulator
	811-36-16	neutral section
	811-36-17	independence of tracks
	811-36-18	feeder clamp
	811-36-19	dual system track
	811-36-20	voltage variation
	811-36-21	electric traction system
	811-36-22	switching station
	811-36-23	live part, <in electric traction>
	811-36-24	along-track feeder
	811-36-25	feeding section
	811-36-26	feeding point
	811-36-27	interconnecting circuit-breaker
Section 811-37: Train communication network
	811-37-01	address, <in a train communication network>
	811-37-02	agent
	811-37-03	application layer
	811-37-04	application layer interface
	811-37-05	application process
	811-37-06	basic period
	811-37-07	big-endian
	811-37-08	bit-stuffing
	811-37-09	bridge, <in a train communication network>
	811-37-10	broadcast
	811-37-11	bus administrator
	811-37-12	bus switch
	811-37-13	caller
	811-37-14	check offset
	811-37-15	check sequence
	811-37-16	check variable
	811-37-17	closed train
	811-37-18	communication device
	811-37-19	composition
	811-37-20	consist
	811-37-21	consist network
	811-37-22	consist switch
	811-37-23	consistency, <in a train communication network>
	811-37-24	consumer, <in a train communication network>
	811-37-25	conversation, <in a train communication network>
	811-37-26	datagram
	811-37-27	dataset
	811-37-28	delimiter
	811-37-29	destination device
	811-37-30	device, <in a train communication network>
	811-37-31	device address
	811-37-32	end delimiter
	811-37-33	end device
	811-37-34	end node
	811-37-35	extension box
	811-37-36	extension cable
	811-37-37	F code
	811-37-38	field device
	811-37-39	flag
	811-37-40	frame, <in a train communication network>
	811-37-41	frame check sequence
	811-37-42	frame data
	811-37-43	fritting
	811-37-44	gateway, <in a train communication network>
	811-37-45	group address
	811-37-46	group directory
	811-37-47	HDLC
	811-37-48	inauguration
	811-37-49	intermediate node
	811-37-50	line unit
	811-37-51	linear topology
	811-37-52	link address
	811-37-53	link control
	811-37-54	link data
	811-37-55	link header
	811-37-56	link layer
	811-37-57	link layer lnterface
	811-37-58	link layer management
	811-37-59	little-endian
	811-37-60	local area network, <in a train communication network>
	811-37-61	logical address
	811-37-62	master
	811-37-63	master frame
	811-37-64	message data
	811-37-65	messenger, <in a train communication network>
	811-37-66	multicast
	811-37-67	MVB
	811-37-68	network, <in a train communication network>
	811-37-69	network address
	811-37-70	network device
	811-37-71	network header
	811-37-72	network layer
	811-37-73	network management, <in a train communication network>
	811-37-74	node, <in a train communication network>
	811-37-75	node address
	811-37-76	node descriptor
	811-37-77	node directory
	811-37-78	node key
	811-37-79	open train
	811-37-80	physical address
	811-37-81	physical port
	811-37-82	polling, <in a train communication network>
	811-37-83	port index table
	811-37-84	preamble, <in a train communication network>
	811-37-85	process data
	811-37-86	process variable
	811-37-87	producer, <in a train communication network>
	811-37-88	publisher
	811-37-89	queue
	811-37-90	repeater, <in a train communication network>
	811-37-91	ring topology
	811-37-92	send queue
	811-37-93	service, <in a train communication network>
	811-37-94	session header
	811-37-95	session layer
	811-37-96	slave
	811-37-97	slave frame
	811-37-98	stub
	811-37-99	subscriber
	811-37-100	supervisory data
	811-37-101	switch, <in a train communication network>
	811-37-102	telegram, <in a train communication network>
	811-37-103	terminator
	811-37-104	terminator switch
	811-37-105	topography
	811-37-106	topology
	811-37-107	train backbone
	811-37-108	train communication network
	811-37-109	train network address
	811-37-110	train network management
	811-37-111	transmitter
	811-37-112	transport data
	811-37-113	transport layer
	811-37-114	trunk cable
	811-37-115	wire train bus