VS1 - Tipo sa Indoor High - Voltage Vacuum Circuit Breaker
Ang VS1 - tipo sa indoor high - voltage vacuum circuit breaker mao ang isang indoor device para sa three - phase AC 50Hz uban sa rated voltage nga 12kV. Ginagamit kini alang sa control ug protection sa electrical facilities sa industrial ug mining enterprises, power plants, ug substations. Ang circuit breaker nag-arrange sa main circuit ug ang operating mechanism sa usa ka special - shaped frame sa front - rear manner, o isip usa ka integral layout. Kini nga structural design makakapadako sa operating performance sa operating mechanism mas consistent sa performance nga gikinahanglan alang sa pag-open ug pag-close sa arc - extinguishing chamber, mabawasan ang unnecessary intermediate transmission links, mubaba ang energy consumption ug noise, ug makapadugay sa operating performance sa circuit breaker mas reliable. Ang users mahimo na direkta mosulay niini wala nang adjustment.
1. Operational Technical Requirements
Ang circuit breaker mahimo na mogamit og manual energy storage, manual closing, ug manual opening. Kasagaran, ang manual operation function gamiton lamang kung walay load sa commissioning ug inspection sa circuit breaker. Bago ang manual operation, siguradoha nga ang circuit breaker adunay open position, ang secondary power plug gi-pull out, ug ang control power supply gi-disconnect. Ang manual operation function adunay special usage regulations sa special circumstances.
Ang manual energy storage operation function mahimo gamiton sa special circumstances diin walay power sa secondary circuit sa circuit breaker.
Ang manual opening operation function mahimo maghatag sa operator og direct opening operation sa circuit breaker sa emergency needs.
Ang manual closing operation function mahimo gamiton lang kung ang main circuit sa circuit breaker wala live. As long as ang main circuit sa circuit breaker adunay live, absolutely dili allowed ang manual closing operation.
1.1 Electric Energy Storage Operation
Human sa circuit breaker adunay working state (regardless of whether ang main circuit sa circuit breaker adunay live o wala), ang electrical circuit sa energy storage motor adunay working state. Ang energy storage motor automatic powered on aron mopasabot sa energy storage operation sa closing spring. Human sa closing spring fully energy-stored, ang energy storage position switch sa circuit breaker automatic cut off sa electrical circuit sa energy storage motor. Kung ang circuit breaker gamiton sa withdrawable switchgear, ang circuit breaker handcart equipped og corresponding interlocks.
Kung ang circuit breaker handcart mobalhin gikan sa test position ngadto sa working position o gikan sa working position ngadto sa test position, ang closing spring dili allowed morelease. Sa panahon sa movement, ang closing circuit cut off, ang closing shaft mechanical interlocked ug locked, ug ang manual closing fail. Human sa balhin, ang energy storage circuit ug ang closing circuit conducted, ug ang mechanical interlock sa closing shaft released. Kung ang circuit breaker adunay closed state, ang circuit breaker handcart dili allowed mobalhin.
1.2 Electric Closing Operation
Ang operator mahimo mogamit sa electrical contacts (such as electrical buttons, closing contactors, etc.) connected sa closing circuit sa circuit breaker aron connect sa coil sa closing electromagnet sa circuit breaker ug complete ang closing operation. Adunay electrical interlocks tali sa electrical circuit sa closing electromagnet coil ug ang state sa energy storage spring sa circuit breaker, ug tali sa circuit sa closing electromagnet coil ug ang state sa main contacts sa circuit breaker. Kung ang energy storage spring wala fully energy-stored o ang circuit breaker already adunay closed state, ang energy storage travel switch ug ang auxiliary switch sa circuit breaker disconnect sa electrical circuit sa closing electromagnet coil. Regardless of whether an external closing signal given o wala, ang circuit breaker dili able perform ang closing operation.
1.3 Electric Opening Operation
Ang circuit breaker mahimo hatagan sa operator og 2 types sa electric opening methods: electric opening by the opening electromagnet powered by an independent power supply ug electric opening by the over-current release.
Electric opening by the opening electromagnet powered by an independent power supply. Ang operator mahimo mogamit sa electrical contacts (such as electrical buttons, closing contactors, etc.) sa opening circuit sa coil sa opening electromagnet powered by an independent power supply connected sa circuit breaker aron connect sa coil sa opening electromagnet powered by an independent power supply sa circuit breaker ug complete ang opening operation.
Electric opening by the over-current release. Ang over-current release coil sa circuit breaker connected sa electrical circuit connected sa secondary side sa current transformer. Kung ang circuit breaker normal nga nagtrabaho, ang over-current release coil short-circuited by the normally closed contact sa over-current relay (or equivalent protection device) connected sa electrical circuit, ug ang current sa secondary circuit sa current transformer wala flow through sa over-current release coil. Kung adunay fault sa main circuit, ang over-current relay acts, ang normally closed contact opens, ug ang current sa secondary circuit sa current transformer will flow through sa over-current release coil, driving ang over-current release acts ug complete ang opening operation sa circuit breaker.
2. Operation and Maintenance of the Circuit Breaker
Daily Maintenance and Inspection:Human sa circuit breaker put into operation, regular inspections should be carried out in accordance with relevant operation specifications. The inspection should be carried out when the main circuit sa circuit breaker wala live.
Cleaning Maintenance Management:The circuit breaker human sa put into operation should be cleaned regularly aron keep ang surfaces sa insulating parts ug conductive parts clean. The cleaning should be carried out when both the main ug auxiliary circuits sa circuit breaker wala live.
Lubrication and Maintenance:Regular lubrication should be carried out sa relevant parts sa circuit breaker. The lubrication should be carried out when both the main ug auxiliary circuits sa circuit breaker wala live. The lubrication ug maintenance parts include each rotating part sa circuit breaker including ang operating mechanism; ang transmission parts related sa installation part sa circuit breaker (for example, when ang circuit breaker gamiton sa withdrawable switchgear, ang transmission part sa interlock between ang circuit breaker ug ang switchgear). When ang circuit breaker gamiton sa withdrawable switchgear, ang contact part sa isolation plug sa circuit breaker should be cleaned regularly ug coated with new Vaseline oil.
3. Conclusion
Before ang VS1 - type circuit breaker put into operation, carefully check ang rated voltage or current sa each operating element kung match sa actual situation. And ang energy storage sa mechanism should be used aron realize ang trial operation sa closing ug opening methods aron check kung ang each index normal. During ang use sa circuit breaker, regularly check ang vacuum degree sa vacuum arc-extinguishing chamber by ang power-frequency withstand voltage method. Open ang circuit breaker, ug apply ang power-frequency voltage nga 42kV between ang breaks sa arc-extinguishing chamber for 1 minute at the same time. If continuous breakdown found sa arc-extinguishing chamber, replace ang vacuum arc-extinguishing chamber.