| 摘要 |
FIELD: electrical engineering; electrical energy generation, conversion, and distribution. ^ SUBSTANCE: proposed switchgear has four lead-in panels 1, 2, 3, 4. Lead-in panels 1, 2 are provided with external main and stand-by cable lead-ins 5, 6 and 7, 8. Lead-in panels 3, 4 are provided with main and stand-by connecting cable lead-ins 9, 10, and 11, 12. Switchgear also has controller 13 and voltage monitoring devices 14, 15 installed on first and second lead-in panels 1, 2 as well as control apparatuses 16, 17, 18 19 installed in cable lead-ins and incorporating interlocks for main and stand-by contacts of cable lead-ins 5, 6 and 8 7, 9, 10 and 11, 12. Main external cable lead-ins 5 and 7 on first and second lead-in panels 1 and 2 are connected to inputs of devices 14, 15, respectively, and outputs of voltage monitoring devices 14, 15, to inputs of controller 13 whose outputs are connected to control apparatuses 16, 17, 18, and 19. Main connecting cable lead-in 9 on third lead-in panel 3 and stand-by connecting cable lead-in 12 on fourth lead-in panel 4 are connected to external stand-by cable lead-in 6 on first lead-in panel 1; stand-by cable lead-in 10 on third lead-in panel 3 and main connecting cable lead-in 11 on fourth lead-in panel 4 are connected to stand-by external cable lead-in 8 on second lead-in panel 2. Each of lead-in panels 1, 2, 3, and 4 has respective outgoing line 20,21, 22, and 23 incorporating electricity metering unit 24. ^ EFFECT: enhanced power capacity and operating reliability of switchgear. ^ 1 cl, 1 dwg |
