Kev xaiv cov cai rau DC system Circuit Court breakers

Nws yog nruj me ntsis txwv tsis pub siv AC cua Circuit Court breakers hauv DC Circuit Court; vim AC arcs thiab DC arcs muaj qhov sib txawv arc extinguishing mechanisms, lub arc extinguishing chambers ntawm AC thiab DC lub tshuab nqus tsev Circuit Court breakers yog fundamentally sib txawv. AC cua Circuit Court breakers tsis muaj peev xwm tua DC luv -circuit arcs. Muaj peev xwm. Yog li ntawd, nws yog nruj me ntsis txwv tsis pub siv AC cua Circuit Court breakers nyob rau hauv DC Circuit Court. Kev sim thiab kev ua haujlwm tau ua pov thawj tias lub peev xwm tawg ntawm AC Circuit Court breakers tsuas yog 1/5-1/8 ntawm lub peev xwm tawg ntawm DC Circuit Court breakers. Thaum qhov ntsuas tam sim no tawg, qhov kub ntawm cov neeg sib cuag tshwm sim los ntawm qhov ncaj qha arc tshwm sim los ntawm lub sijhawm, thiab tag nrho lub sijhawm tawg tsis paub meej kuj yog ib qho teeb meem nyuaj hauv kev sib koom ua ke ntawm qib sib txawv.

Thaum siv AC thiab DC dual- lub hom phiaj cua Circuit Court breakers, nws qhov kev ua tau zoo yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm kev tawg DC Circuit Court luv- Circuit Court tam sim no thiab qhia kev xaiv.

Nyob rau hauv DC fais fab mov system, nws yog ib qhov tsim nyog los tiv thaiv lub fuse thiab cua Circuit Court breaker los ntawm kev sib xyaw rau hauv tib ceg. Vim tias qhov sib txawv ntawm qhov sib txawv ntawm cov hluav taws xob hluav taws xob thiab lub fuse yog qhov nyuaj rau kev sib tw, qhov nrawm nrawm ntawm lub voj voog cua tsis muaj sij hawm txwv tsis hloov nrog qhov loj ntawm qhov tam sim no. , Thiab qhov kev txiav txim ntawm lub fuse muaj lub sijhawm hloov pauv. Txawm hais tias lub Circuit Court breaker tau teeb tsa ua ntej lossis tom qab lub fuse, nws yuav nco ntsoov poob nws qhov kev xaiv xaiv nyob rau hauv qee qhov luv luv - cov nqi hluav taws xob tam sim no. Yog li ntawd, txoj kev tiv thaiv ua ke no yuav tsum zam kom ntau li ntau tau. Tshwj xeeb, lub fuse tsis tuaj yeem siv tom qab lub tshuab hluav taws xob tsis siv neeg lub tshuab hluav taws xob. Nyob rau hauv txoj kev no, theem sib txawv ntawm kev sib koom ua ke yog qhov nyuaj dua los tiv thaiv kev poob ntawm kev xaiv xaiv thaum lub voj voog tsis ua haujlwm.

Due to the characteristics of high breaking capacity, fast breaking speed, short arcing, small size and complete specifications, DC circuit breakers are currently widely used in complete sets of DC power supply devices in substations. Products from different manufacturers should not be mixed as much as possible. Due to the dispersion of action characteristics, action selectivity may be lost. Therefore, in principle, the DC circuit breakers of a plant or station should be selected from the same manufacturer's series.

Kev xaiv ntawm DC Circuit Court breakers ntawm txhua theem ntawm DC lub zog hluav taws xob yuav tsum ua kom muaj qhov sib txawv ntawm qib tsim nyog los tiv thaiv dhau - qib tripping.