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Object Groupings and Systems
(hierarchy name)
systems
Scope note
Designates complex assemblies of equipment and activities, arranged according to some scheme or plan, and intended to perform specific functions.
UF
system
BT
Object Groupings and Systems
(hierarchy name)
300008550
systems
NT4
300242031
system components
[
+
~
]
NT5
electrical system components
[
+
~
]
NT6
actuators
NT6
oscillators
NT6
transistors
NT6
electron tubes
[
+
~
]
NT7
diodes
[
+
]
NT7
vacuum tubes
[
+
]
NT6
capacitors
NT6
electrodes
[
+
~
]
NT7
ion-selective electrodes
NT6
insulators
NT6
resistors
NT6
rheostats
[
+
~
]
NT7
potentiometers
NT6
rheotomes
NT6
raceways
[
+
~
]
NT7
busways
NT6
electric cables
[
+
~
]
NT7
armored cables
NT6
circuit breakers
NT6
circuits
NT6
electric conduits
NT6
switchboards
NT6
electric switches
NT6
electric wiring
NT6
ground-fault circuit interruptors
NT6
power outlets
NT6
panelboards
NT6
receptacles
NT6
transformers
[
+
~
]
NT7
step-down transformers
NT7
step-up transformers
NT6
circuit boards
NT6
occupancy sensors
NT6
photovoltaic cells
[
+
~
]
NT7
solar cells
NT6
punch blocks
(electrical connections)
NT6
magnetrons
NT6
[temporary alphabetical list: electrical system components]
[
+
~
]
NT7
alligator clips
NT7
anodes
NT7
ballast tubes
NT7
battery adapters
NT7
battery charger adapters
NT7
battery jars
NT7
battery testers
NT7
cable fault locators
NT7
AC-DC converters
NT7
binding posts
NT7
cathodes
NT7
decade boxes
NT7
dimmer switches
NT7
electric wires
NT7
electrical adapters
NT7
electrical boxes
NT7
electrical chokes
NT7
electrical maintenance & repair equipment
NT7
electrical modulators
NT7
electrical outlets
NT7
electrical plugs
NT7
electrical shunts
NT7
electrical switches
NT7
electrical terminals
NT7
electrical testers
NT7
electrical tubes
NT7
electrician's pliers
NT7
electrolytic capacitors
NT7
extension cords
NT7
fuse blocks
NT7
fuse boxes
NT7
fuse pullers
NT7
impedance transformers
NT7
induction coils
NT7
growlers
NT7
junction boxes
NT7
knife switches
NT7
magneto and coil testers
NT7
outlet boxes
NT7
relays
NT7
resistance boxes
NT7
resonant transformers
NT7
plug adapters
NT7
power cords
NT7
receptacle plugs
NT7
transfer switches
NT7
tube sockets
NT7
utility boxes
NT7
variable capacitors
NT7
voltage multipliers
NT7
single side band modulators
NT7
socket covers
NT7
socket plugs
NT7
wire nuts
NT7
wire sorters
NT7
solenoids
NT7
solenoid switches
NT7
spark arresters
NT7
tesla coils
NT7
time switches
NT5
[plumbing and stormwater system components]
[
+
~
]
NT6
leader heads
NT6
catch basins
NT6
cesspools
NT6
cisterns
(plumbing components)
NT6
drains
[
+
~
]
NT7
area drains
NT7
fixture drains
NT7
storm drains
NT7
French drains
NT6
gutters
(building drainage components) [
+
~
]
NT7
arris gutters
NT7
valley gutters
NT7
back gutters
NT7
eaves gutters
NT6
piping
(plumbing system components) [
+
~
]
NT7
downspouts
NT7
drainage piping
NT7
DWV piping
NT7
mains
(plumbing)
NT7
stacks
(piping) [
+
]
NT7
risers
(piping)
NT7
service pipes
NT7
pipe fittings
(components)
NT6
plumbing fixtures
[
+
~
]
NT7
drinking fountains
NT7
washfountains
NT7
bathtubs
[
+
]
NT7
bidets
(plumbing fixtures)
NT7
sinks
(fixtures) [
+
]
NT7
toilets
(fixtures) [
+
]
NT7
urinals
(plumbing fixtures)
NT7
laundry trays
NT7
water conditioners
NT7
shower heads
NT7
bath basins
NT6
seepage pits
NT6
septic tanks
NT6
sumps
NT6
traps
(plumbing system components) [
+
~
]
NT7
fixture traps
NT7
house traps
NT6
water heaters
[
+
~
]
NT7
solar water heaters
NT6
water storage tanks
NT6
leaching fields
NT6
impluvia
NT6
waterspouts
[
+
~
]
NT7
gargoyles
NT7
lion-head spouts
NT7
śuṇḍu
NT6
safes
(plumbing components)
NT6
rain barrels
NT6
[temporary alphabetical list: plumbing and stormwater system components]
[
+
~
]
NT7
bathroom sink
NT7
drain cover
NT7
indoor fountain
NT7
kitchen sink
NT7
pedestal sink
NT7
plumbing & drainage elements
NT7
plumbing pipe
NT7
plumbing pump
NT7
sink sprayer
NT7
sink stopper
NT7
water heater stand
NT7
water supply pipe
NT6
nāla
NT5
HVAC components
[
+
~
]
NT6
ventilation system components
[
+
~
]
NT7
ventilators
(ventilation components)
NT7
air filters
[
+
]
NT7
air-handling units
NT7
blowers
NT7
dampers
(HVAC components)
NT7
air distribution systems
NT7
air diffusers
NT7
air ducts
NT7
registers
(HVAC components)
NT7
cowls
(ventilation system components)
NT7
plenum chambers
NT7
fume hoods
NT6
[cooling, heating and humidifying components]
[
+
~
]
NT7
furnaces
(heating components) [
+
]
NT7
air washers
NT7
boilers
(HVAC components) [
+
]
NT7
cooling towers
NT7
heat pumps
[
+
]
NT7
heat exchangers
[
+
]
NT7
thermostats
NT7
radiator enclosures
NT7
breechings
NT7
trompes
(cooling components)
NT7
solar thermal panels
NT7
stovepipes
(pipes)
NT6
heat-distributing units
[
+
~
]
NT7
baseboard units
NT7
convectors
NT7
radiators
NT7
thermal masses
NT5
telecommunication systems components
[
+
~
]
NT6
television receivers
NT6
radio receivers
NT6
telephones
[
+
~
]
NT7
cellular telephones
NT7
smartphones
NT6
transceivers
[
+
~
]
NT7
walkie-talkies
NT6
antennas
[
+
~
]
NT7
[antennas by form]
[
+
]
NT7
[antennas by function]
[
+
]
NT6
field telephones
NT6
telephone wires
NT6
microphones
[
+
~
]
NT7
dynamic microphones
NT7
ribbon microphones
NT7
condenser microphones
NT7
lavaliers
NT6
telegraphs
[
+
~
]
NT7
engine-room telegraphs
NT6
liquid crystal displays
NT6
remote controls
NT6
[temporary alphabetical list: telecommunication systems components]
[
+
~
]
NT7
answering machine
NT7
antenna insulator
NT7
antenna lead cable
NT7
antenna rotor
NT7
antenna wire
NT7
cable connector
NT7
cable converter
NT7
communication insulator
NT7
console radio
NT7
console television
NT7
cordless telephone
NT7
car radio
NT7
cb radio
NT7
coaxial cable
NT7
coherer
NT7
coin-operated telephone
NT7
color converter
NT7
crystal radio
NT7
descrambler
NT7
desk telephone
NT7
instructograph
NT7
grounding rod
NT7
headset
NT7
magneto telephone
NT7
pager
NT7
morse code instruction device
NT7
natrometer
NT7
omnigraph
NT7
remote servo
NT7
rooftop antenna
NT7
portable radio
NT7
portable television
NT7
radio antenna
NT7
radio frequency amplifier
NT7
radio headset
NT7
radio scanner
NT7
radio transmitter
NT7
radio tuner
NT7
radiophone
NT7
transistor radio
NT7
transmitter
(telecommunication system component)
NT7
transponder
NT7
satellite dish
NT7
satellite telephone
NT7
scrambler
NT7
set-top antenna
NT7
uhf converter
NT7
varioplex
NT7
signal splitter
NT7
wall telephone
NT7
stock ticker
NT7
submarine cable
NT7
table radio
NT7
tdd
NT7
telecommunication accessories
NT7
telecommunication cable
NT7
telecommunication devices
NT7
telecommunication equipment case
NT7
telecommunication media
NT7
telecommunication wire
NT7
telegraph key
NT7
telegraph printer
NT7
telegraph sounder
NT7
telegraph wire
NT7
telegraph wire insulator
NT7
telemeter
NT7
telephone cable
NT7
telephone case
NT7
telephone jack
NT7
telephone line doubler
NT7
telephone switchboard
NT7
telephone wire insulator
NT7
teleprinter
NT7
teletype
NT7
teletypewriter
NT7
television antenna
NT7
television converter
NT7
television transmitter
NT7
television tuner
NT7
ticker tape
NT7
ticker tape machines
NT6
fax machines
NT5
infrastructural elements
[
+
~
]
NT6
dam elements
[
+
~
]
NT7
fishways
NT7
spillways
NT7
stilling basins
NT7
penstocks
NT6
transportation elements
[
+
~
]
NT7
bridge elements
[
+
]
NT7
[road and roadside elements]
[
+
]
NT7
grade crossings
NT7
transit system elements
[
+
]
NT7
roadbeds
NT6
utilities components
[
+
~
]
NT7
water mains
NT7
utility poles
[
+
]
NT7
power lines
NT7
gas pipelines
NT7
oil pipelines
[
+
]
NT7
oil pumping stations
NT5
protection system components
[
+
~
]
NT6
fire alarm system components
[
+
~
]
NT7
fire detectors
[
+
]
NT7
smoke detectors
[
+
]
NT7
manual stations
NT6
fire extinguishing system components
[
+
~
]
NT7
fire sprinklers
NT6
security system components
[
+
~
]
NT7
burglar alarms
NT6
[temporary alphabetical list: protection system components]
[
+
~
]
NT7
backpack pump
NT7
alarm
NT7
gas alarm
NT7
gas detector
NT7
gas mask carrier
NT7
fire alarm box
NT7
fire blanket
NT7
fire bucket
NT7
fire bucket rack
NT7
fire extinguisher holder
NT7
fire hook
NT7
fire hose adapter
NT7
fire hose jacket
NT7
fire hose nozzle
NT7
fire hose rack
NT7
fire hose reel
NT7
fire ladder
NT7
fire plug wrench
NT7
fire protection device
NT7
protective devices
NT7
security card reader
NT7
security device
NT7
security keypad
NT7
security lock
NT7
security scanner
NT7
smoke alarm
NT7
x-ray security scanner
NT7
sandbag
NT4
300242038
[systems by function]
[
+
~
]
NT5
waterworks
NT5
electrical systems
[
+
~
]
NT6
emergency power supply
NT6
grounded systems
NT6
electrical system components
[
+
~
]
NT7
actuators
NT7
oscillators
NT7
transistors
NT7
electron tubes
[
+
]
NT7
capacitors
NT7
electrodes
[
+
]
NT7
insulators
NT7
resistors
NT7
rheostats
[
+
]
NT7
rheotomes
NT7
raceways
[
+
]
NT7
electric cables
[
+
]
NT7
circuit breakers
NT7
circuits
NT7
electric conduits
NT7
switchboards
NT7
electric switches
NT7
electric wiring
NT7
ground-fault circuit interruptors
NT7
power outlets
NT7
panelboards
NT7
receptacles
NT7
transformers
[
+
]
NT7
circuit boards
NT7
occupancy sensors
NT7
photovoltaic cells
[
+
]
NT7
punch blocks
(electrical connections)
NT7
magnetrons
NT7
[temporary alphabetical list: electrical system components]
[
+
]
NT5
conveying systems
[
+
~
]
NT6
vertical conveying systems
[
+
~
]
NT7
dumbwaiters
(conveying systems)
NT7
elevators
[
+
]
NT7
manlifts
NT7
platform lifts
NT6
[diagonal and multidirectional conveying systems]
[
+
~
]
NT7
inclined elevators
NT7
escalators
NT7
inclined lifts
[
+
]
NT7
moving ramps
NT7
pneumatic tubes
NT6
horizontal conveying systems
[
+
~
]
NT7
moving walkways
NT6
[temporary alphabetical list: conveying systems]
[
+
~
]
NT7
conveyance devices
NT7
deposit chutes
NT5
HVAC
[
+
~
]
NT6
heating systems
[
+
~
]
NT7
furnaces
(heating components) [
+
]
NT7
resistance heating
NT7
hot water heating
NT7
radiant heating
[
+
]
NT7
solar heating
(systems) [
+
]
NT7
steam heating
[
+
]
NT7
warm air heating
[
+
]
NT7
heat-distributing units
[
+
]
NT6
ventilation
(systems) [
+
~
]
NT7
exhaust ventilation
(systems)
NT7
mechanical ventilation
(systems)
NT7
natural ventilation
(systems)
NT7
ventilation system components
[
+
]
NT6
air conditioning
[
+
~
]
NT7
central air conditioning
NT7
incremental air conditioning
NT7
air washers
NT6
air cooling
[
+
~
]
NT7
chilled water systems
NT7
refrigerant systems
NT7
ice storage systems
NT7
passive cooling
NT6
HVAC components
[
+
~
]
NT7
ventilation system components
[
+
]
NT7
[cooling, heating and humidifying components]
[
+
]
NT7
heat-distributing units
[
+
]
NT6
[temporary alphabetical list: HVAC]
[
+
~
]
NT7
chiller systems
NT7
coal furnaces
NT7
dehumidifiers
NT7
environmental control elements
NT7
exhaust fans
NT7
fireboards
NT7
fireplace dampers
NT7
fireplace doors
NT7
hvac boilers
NT7
hvac coils
NT7
hvac compressors
NT7
hvac condensers
NT7
hvac evaporators
NT7
hvac filters
NT7
recirculating fans
NT7
vent caps
NT7
ventilation fans
NT7
ventilator damper
NT5
lighting
[
+
~
]
NT6
[lighting by method of illumination]
[
+
~
]
NT7
electric lighting
NT7
gas-lighting
NT7
fluorescent lighting
NT7
daylighting
NT7
artificial lighting
NT6
[lighting by location or context]
[
+
~
]
NT7
exterior lighting
NT7
interior lighting
[
+
]
NT7
stage lighting
NT6
[lighting by function]
[
+
~
]
NT7
architectural lighting
[
+
]
NT7
emergency lighting
NT5
stormwater systems
NT5
communication systems
(mechanical and electrical systems) [
+
~
]
NT6
television antenna systems
NT6
clock and program systems
NT6
sound systems
[
+
~
]
NT7
intercom systems
NT7
public address systems
NT7
doorbells
[
+
]
NT7
sound-reproducing systems
NT7
audioguides
NT7
call bells
NT6
NTSC system
NT5
protection systems
[
+
~
]
NT6
fire protection systems
[
+
~
]
NT7
fire alarm systems
[
+
]
NT7
fire extinguishing systems
[
+
]
NT6
security systems
[
+
~
]
NT7
electronic security systems
NT7
security system components
[
+
]
NT6
protection system components
[
+
~
]
NT7
fire alarm system components
[
+
]
NT7
fire extinguishing system components
[
+
]
NT7
security system components
[
+
]
NT7
[temporary alphabetical list: protection system components]
[
+
]
NT5
plumbing systems
[
+
~
]
NT6
[plumbing and stormwater system components]
[
+
~
]
NT7
leader heads
NT7
catch basins
NT7
cesspools
NT7
cisterns
(plumbing components)
NT7
drains
[
+
]
NT7
gutters
(building drainage components) [
+
]
NT7
piping
(plumbing system components) [
+
]
NT7
plumbing fixtures
[
+
]
NT7
seepage pits
NT7
septic tanks
NT7
sumps
NT7
traps
(plumbing system components) [
+
]
NT7
water heaters
[
+
]
NT7
water storage tanks
NT7
leaching fields
NT7
impluvia
NT7
waterspouts
[
+
]
NT7
safes
(plumbing components)
NT7
rain barrels
NT7
[temporary alphabetical list: plumbing and stormwater system components]
[
+
]
NT7
nāla
NT6
water distribution systems
[
+
~
]
NT7
downfeed systems
NT7
upfeed systems
NT6
sanitary drainage systems
NT5
infrastructural systems
[
+
~
]
NT6
transit systems
(infrastructure) [
+
~
]
NT7
railroads
(infrastructure)
NT7
public transit
(infrastructure) [
+
]
NT6
utilities
(infrastructures) [
+
~
]
NT7
water supply systems
[
+
]
NT7
municipal lighting
NT7
street lighting
NT7
utilities components
[
+
]
NT6
telecommunication systems
[
+
~
]
NT7
police communication systems
NT7
telephone systems
[
+
]
NT7
telecommunication systems components
[
+
]
NT7
television
(telecommunication system) [
+
]
NT7
radio
(telecommunication system) [
+
]
NT7
intranets
NT7
wireless sensor networks
NT7
telex
NT6
drainage systems
NT6
Internet
[
+
~
]
NT7
World Wide Web
[
+
]
NT5
signage
NT5
seating
[
+
~
]
NT6
icpalli
(seat)
NT5
geographic systems
[
+
~
]
NT6
geographic information systems
NT6
Global Positioning System
NT6
Electron Marker System
NT5
film projection systems
[
+
~
]
NT6
VistaVision (TM)
NT5
computer systems
[
+
~
]
NT6
information systems
[
+
~
]
NT7
cataloging systems
NT7
collection management systems
NT5
digital projection
NT4
300242040
[systems by location or context]
[
+
~
]
NT5
building systems
[
+
~
]
NT6
mechanical systems
NT5
home entertainment systems
[
+
~
]
NT6
home theaters
Català
sistema
Castellano
sistemas
Date of creation: 29-Apr-2024
Accepted term: 29-Apr-2024
BS8723-5
DC
MADS
SKOS-Core
VDEX
XTM
Zthes