Iyo China VD4 yakatevedzana vacuum circuit-breakers zvishandiso zvemukati switchgear kuisirwa.Ndokumbira ubate ROCKWILL kune zvakakosha zvekuisa zvinodiwa.VD4-R yakatevedzana yepakati voltage vacuum circuit breakers ine lateral inoshanda sisitimu yekumisikidza yemukati inoratidzira yakaparadzana danda rekuvaka.Danda rega rega rinochengeta vacuum interrupter iyo yakavharirwa muresin kana silinda inoumbwa nekuda kwemaitiro akakosha ekugadzira.Iyi nzira yekuvaka inodzivirira vacuum interrupter kubva mukuvhunduka, kusvibiswa uye condensation.
Muchina wekushandisa imhando yemagetsi yakachengetwa isina rwendo ine yakazvimirira kuvhura uye kuvhara zvisinei nekuita kwemushandisi.Iyo yekushandisa michina inoshandiswa zvakanyanya mune ese VD4-R akateedzana maseketi-mabreaker ane frontal control.
Iyo yedunhu-inopwanya inogona kudzorwa kure kana yakashongedzwa neakazvitsaurira magetsi accessories (gearmotor, kuvhura uye kuvhara kuburitswa).
Mashandisirwo ekushandisa, mapango matatu uye masensa azvino (kana akapihwa) akaiswa pasimbi isina mavhiri.Chivakwa chacho chinonyanya kusimba, chakasimba uye chehuremu hushoma.
VD4-R series circuit-breaker with lateral operating mechanisms are life-long sealed pressure devices.(Mitemo IEC 62271-100)
| Vacuum circuit-breaker | **4/R 12 | **4/R 17 | **4/R 24 | |||||||
| Mitemo | * | * | * | |||||||
| Rated voltage | Ur(kV) | 12 | 17.5 | 24 | ||||||
| Rated insulation voltage | Isu(kV) | 12 | 17.5 | 24 | ||||||
| Kumira voltage pa50Hz | Ud(kV) | 28 | 38 | 50 | ||||||
| Impulse inomira voltage | kumusoro(kV) | 75 | 95 | 125 | ||||||
| Rated frequency | fr(Hz) | 50-60 | 50-60 | 50-60 | ||||||
| Rated thermal current | 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 | / | / | / | ||
| Nguva pfupi yekumira ikozvino (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 | / | / | / | ||
| Kuita kugona | 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 | |||||
| Kuita kugona | * | * | * | |||||||
| Nguva yekuvhura | ms | 40...60 | 40...60 | 40...60 | ||||||
| Arcing nguva | ms | 10...15 | 10...15 | 10...15 | ||||||
| Total break-time | ms | 50...75 | 50...75 | 50...75 | ||||||
| Nguva yekuvhara | ms | 30...60 | 30...60 | 30...60 | ||||||
| Code | Shanduro dziripo | |||||||||
| Kuvhara pushbutton | ** 4circuit-breaker ane lateral inoshanda michina inowanikwa mukati shanduro dzinotevera: | |||||||||
| Yakavhurika/yakavharwa chiratidzo | ||||||||||
| Discharged | Chinhambwe chepakati P=()mm | Fixed | Removable | |||||||
| Operation counter | 210 | 210 | ||||||||
| Mubato wekuchaja nemaoko | 230 | 230 | ||||||||
| Kuvhura pushbutton | 250 | 250 | ||||||||
| Protection relay | 275 | 275 | ||||||||
| Delivery terminal bhokisi | 300 | 300 | ||||||||
| Current transformer | 310 | 310 | ||||||||
| Polo | ||||||||||
NaRiva anobva kuHongkong - 2017.05.02 18:28 NaEliecerJimenez kubva kuBarcelona - 2017.01.28 18:53 
