43:
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Distribution boards split the electrical supply into separate circuits at one location. Busways, or bus ducts, are long busbars with protective covers. Rather than branching from the main supply at one location, they allow new circuits to branch off anywhere along the busway.
447:
A busbar may be either supported on insulators, or wrapped in insulation. They are protected from accidental contact either by a metal earthed enclosure or by elevation out of normal reach. Insulated bus bars are used in busways listed to UL 857 standards. Power
333:. They are generally uninsulated, and have sufficient stiffness to be supported in air by insulated pillars. These features allow sufficient cooling of the conductors, and the ability to tap in at various points without creating a new joint.
439:
induced by large currents, must be considered. To address these concerns, flexible bus bars, typically a sandwich of thin conductor layers, were developed. They require a structural frame or cabinet for their installation.
341:
The busbar's material composition and cross-sectional size determine the maximum current it can safely carry. Busbars can have a cross-sectional area of as little as 10 square millimetres (0.016 sq in), but
456:(safety grounding) busbars are typically bare and bolted directly onto any metal chassis of their enclosure. They may be enclosed in a metal housing, in the form of a bus duct or busway, segregated-phase bus, or
590:
463:
Busbars may be connected to each other and to electrical apparatus by bolting, clamping or welding. Joints between high-current bus sections often have precisely machined matching surfaces that are
404:
busbars more than about 8 millimetres (0.31 in) thickness inefficient, so hollow or flat shapes are prevalent in higher-current applications. A hollow section also has higher
805:
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269:
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for local high current power distribution. They are also used to connect high voltage equipment at electrical switchyards, and low-voltage equipment in
166:
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452:
busbars may also be insulated because it is not guaranteed that the potential between power neutral and safety grounding is always zero.
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than a solid rod of equivalent current-carrying capacity, which allows a greater span between busbar supports in outdoor
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Busbars are produced in a variety of shapes, including flat strips, solid bars and rods, and are typically composed of
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31:
671:"IEC 60050 – International Electrotechnical Vocabulary – Details for IEV number 605-02-22: "flexible busbar""
1402:
1392:
1382:
1323:
1186:
969:
858:
696:"IEC 60050 – International Electrotechnical Vocabulary – Details for IEV number 605-02-21: "rigid busbar""
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A busbar must be sufficiently rigid to support its own weight, and forces imposed by mechanical
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558: – short length of conductor used to close, open or bypass part of an electronic circuit
549: – short length of conductor used to close, open or bypass part of an electronic circuit
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537: – Low resistance electrical conductor for high current transmission and distribution
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may use metal tubes 50 millimetres (2.0 in) in diameter or more as busbars.
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17:
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531: – System that transfers data between components within a computer
487:, so special connection fittings designed for these voltages are used.
464:
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982:
616:"What is a Busbar & Other FAQs on Electrical Copper Busbars"
382:
787:
36:
301:
busbars within a power distribution rack for a large building
27:
Strip inside switchgear for local high current distribution
580:"Copper for Busbars: Guidance for Design and Installation"
317:) is a metallic strip or bar, typically housed inside
381:
as solid or hollow tubes. Some of these shapes allow
350:
use very large busbars to carry tens of thousands of
560:
Pages displaying wikidata descriptions as a fallback
551:
Pages displaying wikidata descriptions as a fallback
1502:
1412:
1349:
1311:
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1102:
1013:
968:
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821:
385:to dissipate more efficiently due to their high
799:
543: – Modular approach to electrical wiring
263:
8:
726:Protective Relaying Theory and Applications
479:around the connections becomes a source of
965:
806:
792:
784:
475:(more than 300 kV) in outdoor buses,
270:
256:
98:
749:Electrical Construction & Maintenance
87:Learn how and when to remove this message
435:and ambient temperature variations, and
50:This article includes a list of general
745:"Ensuring a Good Bus Duct Installation"
571:
489:
203:
165:
117:
110:
596:from the original on 19 February 2018
7:
431:from temperature changes induced by
427:in outdoor exposures. In addition,
30:For Electrical busbar system, see
1484:Renewable energy commercialization
56:it lacks sufficient corresponding
25:
1558:Electric power systems components
205:Electric power systems components
1532:
1531:
952:
768:
510:
498:
41:
702:from the original on 2019-01-28
677:from the original on 2019-01-28
1:
1479:Renewable Energy Certificates
1439:Cost of electricity by source
1361:Arc-fault circuit interrupter
1237:High-voltage shore connection
167:Electric power infrastructure
1494:Spark/Dark/Quark/Bark spread
1292:Transmission system operator
1252:Mains electricity by country
829:Automatic generation control
743:Paschal, John (2000-10-01).
646:"Power Drops / Distribution"
481:radio-frequency interference
1519:List of electricity sectors
1514:Electric energy consumption
1232:High-voltage direct current
1207:Electric power transmission
1197:Electric power distribution
874:Energy return on investment
307:electric power distribution
1574:
1434:Carbon offsets and credits
1152:Three-phase electric power
724:Elmore, Walter A. (1994).
29:
1527:
1489:Renewable Energy Payments
978:Fossil fuel power station
950:
423:, as well as accumulated
133:Electric power conversion
119:Electric power conversion
1272:Single-wire earth return
1212:Electrical busbar system
869:Energy demand management
541:Electrical busbar system
286:Copper busbar in a panel
32:Electrical busbar system
1403:Residual-current device
1393:Power system protection
1383:Generator interlock kit
71:more precise citations.
1187:Distributed generation
859:Electric power quality
493:electrical substations
410:electrical switchyards
344:electrical substations
302:
287:
138:HVDC converter station
1459:Fossil fuel phase-out
1227:Electricity retailing
1222:Electrical substation
1202:Electric power system
587:CopperAlliance.org.uk
356:electrochemical cells
293:
285:
176:Electric power system
815:Electricity delivery
777:at Wikimedia Commons
337:Design and placement
1424:Availability factor
1376:Sulfur hexafluoride
1257:Overhead power line
1157:Virtual power plant
1132:Induction generator
1085:Sustainable biofuel
894:Home energy storage
884:Grid energy storage
849:Droop speed control
473:extra high voltages
1298:Transmission tower
909:Nameplate capacity
626:on 30 October 2017
547:Jumper (computing)
491:110 kV busbars in
469:contact resistance
458:isolated-phase bus
348:Aluminium smelters
303:
288:
148:DC-to-DC converter
143:AC-to-AC converter
1545:
1544:
1449:Environmental tax
1329:Cascading failure
1098:
1097:
934:Utility frequency
773:Media related to
735:978-0-8247-9152-0
728:. Marcel Dekker.
620:Starlinepower.com
429:thermal expansion
360:produce aluminium
327:busway enclosures
280:
279:
219:Grid-tie inverter
128:Voltage converter
112:Power engineering
97:
96:
89:
16:(Redirected from
1565:
1535:
1534:
1444:Energy subsidies
1398:Protective relay
1339:Rolling blackout
966:
956:
924:Power-flow study
864:Electrical fault
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622:. Archived from
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477:corona discharge
393:area ratio. The
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244:Protective relay
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85:
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78:
72:
67:this article by
58:inline citations
45:
44:
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1429:Capacity factor
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1388:Numerical relay
1366:Circuit breaker
1354:
1352:
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1247:Load management
1217:Electrical grid
1182:Demand response
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1170:
1161:
1142:Microgeneration
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944:Vehicle-to-grid
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718:Further reading
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505:flexible busbar
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437:magnetic forces
391:cross-sectional
339:
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196:Demand response
186:Electrical grid
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63:Please help to
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1192:Dynamic demand
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899:Load-following
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889:Grid strength
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845:
844:Demand factor
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465:silver-plated
461:
459:
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433:ohmic heating
430:
426:
425:precipitation
422:
419:and possibly
418:
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331:battery banks
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19:
1469:Net metering
1416:and policies
1334:Power outage
1303:Utility pole
1267:Pumped hydro
1173:distribution
1168:Transmission
1117:Cogeneration
919:Power factor
780:
752:. Retrieved
748:
725:
704:. Retrieved
690:
679:. Retrieved
665:
653:. Retrieved
650:busstrut.com
649:
640:
628:. Retrieved
624:the original
619:
610:
598:. Retrieved
586:
574:
517:rigid busbar
462:
446:
442:
414:
387:surface area
368:
362:from molten
340:
323:panel boards
314:
310:
304:
228:
83:
74:
55:
1464:Load factor
1319:Black start
1287:Transformer
988:Natural gas
939:Variability
914:Peak demand
904:Merit order
834:Backfeeding
556:Wire bridge
421:earthquakes
395:skin effect
77:August 2014
69:introducing
1506:production
1351:Protective
1282:Super grid
1277:Smart grid
1104:Generation
1038:Geothermal
929:Repowering
754:2009-04-06
706:2019-01-27
681:2019-01-27
655:13 January
630:30 October
600:30 October
566:References
485:power loss
467:to reduce
319:switchgear
52:references
1414:Economics
1137:Micro CHP
1015:Renewable
998:Petroleum
993:Oil shale
879:Grid code
839:Base load
417:vibration
406:stiffness
379:aluminium
153:Rectifier
18:Power bus
1552:Category
1537:Category
1324:Brownout
1112:AC power
822:Concepts
700:Archived
675:Archived
591:Archived
535:Bus duct
523:See also
454:Earthing
399:50–60 Hz
239:Recloser
234:Bus duct
158:Inverter
104:a series
102:Part of
1353:devices
1063:Thermal
1058:Osmotic
1053:Current
1033:Biomass
1023:Biofuel
1005:Nuclear
962:Sources
775:Busbars
450:neutral
354:to the
352:amperes
315:bus bar
65:improve
1048:Marine
1028:Biogas
732:
471:. At
397:makes
371:copper
325:, and
313:(also
311:busbar
299:copper
296:ampere
229:Busbar
54:, but
1405:(GFI)
1294:(TSO)
1080:Solar
1068:Tidal
1043:Hydro
594:(PDF)
583:(PDF)
375:brass
364:salts
358:that
294:1500
1171:and
1090:Wind
1073:Wave
983:Coal
730:ISBN
657:2024
632:2017
602:2017
483:and
383:heat
309:, a
305:In
412:.
389:to
377:or
1554::
747:.
698:.
673:.
648:.
618:.
589:.
585:.
460:.
402:AC
373:,
366:.
321:,
106:on
807:e
800:t
793:v
757:.
738:.
709:.
684:.
659:.
634:.
604:.
271:e
264:t
257:v
90:)
84:(
79:)
75:(
61:.
34:.
20:)
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