低压成套开关设备 专业术语英文版.docx

1. 低压成套开关设备专业术语英文版2. 1.ow-voItageswitchgear:Acompletesetofelectricalequipmentusedforcontrolling,protecting,anddistributinglow-voItageelectricalpowerinindustrialandcommercialbuildings.3. Panelboard:Adevicethatcombineselectricalswitches,fuses,orcircuitbreakerswithawiringassemblytocontroltheflowofelectriccurrentinabuilding.4. Circuitbreaker:Asafetydevicethatautomaticallyinterruptstheflowofelectriccurrentinacircuitwhenthecurrentexceedsasafelevel,preventingdamagetotheelectricalsystemandequipment.5. MCC(MotorControlCenter):Adevicethatprovidesmotorcontrolandprotectionfunctions,includingmotorstarters,contactors,overloadrelays,andthermalprotectors.6. Disconnectingswitch:Aswitchusedtodisconnectanelectricalcircuitfromitssourceofpower,typicallyformaintenanceorrepairpurposes.7. Distributionbox:Ametalenclosurecontainingelectricalcomponentssuchasswitches,fuses,andcircuitbreakersthatdistributepowertovariouspartsofabuilding.8. Busbar:Ahorizontalorverticalbarmadeofcopperoraluminumthatcarrieshigh-currentelectricalpowerbetweendifferentsectionsofaswitchgearassembly.9. Isolator:Adeviceusedtoisolateasectionofaswitchgearassemblyfromtherestofthesystem,typicallyformaintenanceortestingpurposes.10. Transformer:Adevicethatchangesthevoltagelevelofalternatingcurrent(AC)electricalpower,typicallybysteppinguporsteppingdownthevoltage.11. Groundfaultcircuitinterrupter(GFCI):Asafetydevicethatdetectsgroundfaults(unbalancedcurrentflow)andautomaticallyinterruptstheflowofcurrentintheaffectedcircuittopreventelectrocutionhazards.12. Overloadrelay:Aprotectivedevicethatsensesexcessivecurrentflowinanelectricalcircuitandautomaticallyopensthecircuittopreventdamagetothesystemandequipment.13. Contactor:Anelectromagneticswitchusedtocontroltheflowofelectriccurrentinacircuitbyopeningorclosingasetofcontacts.14. Motorstarter:Adevicethatcontrolsthestartingandstoppingofelectricmotors,typicallybyusingcontactorsandotherprotectivedevices.15. 1.oadcenter:Atypeofpanelboardthatisdesignedtoserveheavy-dutyloads,suchaslargemotorsandairconditioners,andmayincludeadditionalfeaturessuchassurgeprotectionandlightningarresters.16. 1.ightningarrester:Adevicethatprotectselectricalequipmentfromdamagecausedbylightningstrikesbydivertingthelightningcurrenttotheground.