低压成套开关设备 专业术语英文版.docx

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1、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,orcircuitbreakerswithawiringassemblytocontroltheflowofelect

2、riccurrentinabuilding.4. Circuitbreaker:Asafetydevicethatautomaticallyinterruptstheflowofelectriccurrentinacircuitwhenthecurrentexceedsasafelevel,preventingdamagetotheelectricalsystemandequipment.5. MCC(MotorControlCenter):Adevicethatprovidesmotorcontrolandprotectionfunctions,includingmotorstarters,

3、contactors,overloadrelays,andthermalprotectors.6. Disconnectingswitch:Aswitchusedtodisconnectanelectricalcircuitfromitssourceofpower,typicallyformaintenanceorrepairpurposes.7. Distributionbox:Ametalenclosurecontainingelectricalcomponentssuchasswitches,fuses,andcircuitbreakersthatdistributepowertovar

4、iouspartsofabuilding.8. Busbar:Ahorizontalorverticalbarmadeofcopperoraluminumthatcarrieshigh-currentelectricalpowerbetweendifferentsectionsofaswitchgearassembly.9. Isolator:Adeviceusedtoisolateasectionofaswitchgearassemblyfromtherestofthesystem,typicallyformaintenanceortestingpurposes.10. Transforme

5、r:Adevicethatchangesthevoltagelevelofalternatingcurrent(AC)electricalpower,typicallybysteppinguporsteppingdownthevoltage.11. Groundfaultcircuitinterrupter(GFCI):Asafetydevicethatdetectsgroundfaults(unbalancedcurrentflow)andautomaticallyinterruptstheflowofcurrentintheaffectedcircuittopreventelectrocu

6、tionhazards.12. Overloadrelay:Aprotectivedevicethatsensesexcessivecurrentflowinanelectricalcircuitandautomaticallyopensthecircuittopreventdamagetothesystemandequipment.13. Contactor:Anelectromagneticswitchusedtocontroltheflowofelectriccurrentinacircuitbyopeningorclosingasetofcontacts.14. Motorstarte

7、r:Adevicethatcontrolsthestartingandstoppingofelectricmotors,typicallybyusingcontactorsandotherprotectivedevices.15. 1.oadcenter:Atypeofpanelboardthatisdesignedtoserveheavy-dutyloads,suchaslargemotorsandairconditioners,andmayincludeadditionalfeaturessuchassurgeprotectionandlightningarresters.16. 1.ightningarrester:Adevicethatprotectselectricalequipmentfromdamagecausedbylightningstrikesbydivertingthelightningcurrenttotheground.

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