China VD4 series vacuum circuit-breakers ke lisebelisoa tsa ho kenya li-switchgear tse ka hare.Ka kopo ikopanye le ROCKWILL bakeng sa litlhoko tse khethehileng tsa ho kenya.VD4-R letoto la li-voltage medium vacuum circuit breaker tse nang le mochini o sebetsang oa lateral bakeng sa ho kenya ka tlung li na le mokhoa o arohaneng oa kaho ea lipalo.Palo e 'ngoe le e' ngoe e na le sesebelisoa sa vacuum se kenngoeng ka har'a resin ha silinda e bōptjoa ka lebaka la ts'ebetso e khethehileng ea tlhahiso.Mokhoa ona oa ho aha o sireletsa sesireletsi sa vacuum hore se se ke sa tšoha, silafatso le condensation.
Mochini oa ts'ebetso ke mofuta oa motlakase o bolokiloeng o sa tsamaeeng o nang le ho bula le ho koala ho ikemetseng ho sa tsotelehe ketso ea opareitara.Mokhoa oa ts'ebetso o sebelisoa haholo ho li-circuit-breaker tsohle tsa VD4-R tse nang le taolo e ka pele.
Sekhechana sa potoloho se ka laoloa hole ha se kentsoe lisebelisoa tsa motlakase tse inehetseng (gearmotor, ho bula le ho koala tokollo).
Mochini oa ts'ebetso, lipalo tse tharo le li-sensor tsa hajoale (haeba li fanoe) li kentsoe holim'a foreimi ea tšepe ntle le mabili.Mohaho o na le compact ka ho khetheha, o tiile ebile o boima bo fokolang.
VD4-R letoto la li-circuit-breaker tse nang le mekhoa ea ho sebetsa ka morao ke lisebelisoa tsa khatello tse tiisitsoeng bophelo bohle.(Melao ea IEC 62271-100)
| Vacuum-circuit-breaker | **4/R 12 | **4/R 17 | **4/R 24 | |||||||
| Litekanyetso | * | * | * | |||||||
| Matla a lekantsoeng | Ur(kV) | 12 | 17.5 | 24 | ||||||
| Tekanyetso ea motlakase oa insulation | Us(kV) | 12 | 17.5 | 24 | ||||||
| E mamella voltage ho 50Hz | Ud(kV) | 28 | 38 | 50 | ||||||
| Tšusumetso e mamella voltage | Holimo(kV) | 75 | 95 | 125 | ||||||
| E lekantsoe khafetsa | fr(Hz) | 50-60 | 50-60 | 50-60 | ||||||
| E lekantsoe mocheso oa motlakase | Ir(A) | 630 | 800 | 1250 | 630 | 800 | 1250 | 630 | 800 | 1250 |
| Rated duty breaking capacity (symmetrical rated short-circuit current) | Isc(kA) | 12.5 | / | / | 12.5 | / | / | 12.5 | / | / |
| 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | ||
| 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | ||
| 25 | 25 | 25 | 25 | 25 | 25 | / | / | / | ||
| Nako e khuts'oane ea ho mamella hona joale(3s) | Ik(kA) | 12.5 | / | / | 12.5 | / | / | 12.5 | / | / |
| 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | ||
| 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | ||
| 25 | 25 | 25 | 25 | 25 | 25 | / | / | / | ||
| Ho etsa bokgoni | Ip(kA) | 31.5 | / | / | 31.5 | / | / | 31.5 | / | / |
| 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | ||
| 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | ||
| 63 | 63 | 63 | 63 | 63 | 63 | |||||
| Ho etsa bokgoni | * | * | * | |||||||
| Nako ea ho bula | ms | 40...60 | 40...60 | 40...60 | ||||||
| Arcing nako | ms | 10...15 | 10...15 | 10...15 | ||||||
| Kakaretso ea nako ea khefu | ms | 50...75 | 50...75 | 50...75 | ||||||
| Nako ea ho koala | ms | 30...60 | 30...60 | 30...60 | ||||||
| Khoutu | Liphetolelo tse fumanehang | |||||||||
| Konopo ea ho koala | **4 li-circuit-breaker tse nang le mochini o sebetsang oa lateral lia fumaneha liphetolelo tse latelang: | |||||||||
| Sesupo se bulehileng/se koetsoeng | ||||||||||
| E tlositsoe | Sebaka-bohareng P=()mm | E tsitsitse | E tlosehang | |||||||
| Counter ea ts'ebetso | 210 | 210 | ||||||||
| Sehele sa ho tjhaja ka bowena | 230 | 230 | ||||||||
| Ho bula konopo | 250 | 250 | ||||||||
| Relay ea tšireletso | 275 | 275 | ||||||||
| Lebokose la ho tsamaisa thepa | 300 | 300 | ||||||||
| Transformer ea hona joale | 310 | 310 | ||||||||
| Polo | ||||||||||
Ka Eva ho tloha Tunisia - 2018.10.09 19:07 Ka Novia ho tsoa Nicaragua - 2017.10.13 10:47 
