Icopo kwero grounding kende kende ku ketho safety barriers? Lembe ario eni gibedo ngo penji ma juyero acel kende!
"Nyo waya mi tic i ot cabinet copo bedo ma juketho ngo i ngom ku piny ma gwoko kwo? Jumoku giyio nia "ku piny ma gwoko kwo pi gwoko kwo pa dhanu man gwoko piny ma nyayu peko, ketho waya mi gwoko piny i cabinet copu bedu yot." Ento, cik ma rwate nyutho lembe ma mitere man yore mi ketho waya mi gwoko piny i cabinet room. Nyo ketho piny pa waya ma gwoko piny i thenge mi ot pa cabinet utiye ku winjiri ku bedo pa piny ma gwoko kwo?Tin eni, wabeweco ikum lembe ceke ikum ketho piny ma gwoko waya mi tela i ot cabinet.
Gwoko piny pa waya ma gwoko piny i ot cabinettiyo pi jwigo peko, ku tic man yub ma e:
1.Gwoko peko pa mac ma woko: Ka dong juyike piny, dul ma gwoko piny timo tic calu "barrier," ma tero mac ma wok kud i mac ma woko i ngom, man eketho mac ma wok kud i ngom wok kud i waya man eketho rwom pa lanyuth ma jucwalo.
2.Gwoko lembe ma wok kud i iye ni nyayu peko i kum jam tic ma woko: Lembe ma wok kud i waya copo nyayu teko mi mac. Layer ma juketho i ngom copo juku kabedo eni ni nyai woko, ma jwigo nyayu peko i kum jam tic ma ceng kudu.
3.Gwoko jam tic man ber pa dhanu: Ka shielding layer epe i ngom, static buildup nyoke voltages ma rwinyo copo nyayu peko i jam tic. Grounding dwoko piny ma ukadhu i ngom, ma dwoko piny peko mi kwo.
Piny ma pire tek ma mitere man timo pi ketho piny ma gwoko waya i ot cabinet:
1.GB 50093-2013 "Cik pi gedo man ber pa tic mi gedo
10.2.10 The shielding layer pa waya pa jam tic man waya ucikere ni bedo i thenge mi ot tic/cabinet. The shielding layer pa circuit acel ucikere ni bedu ku kero mi kero pa mac man jubi weko ngo iwi pii nyoke ucungo iwi ngom wang mapol.
10.2.11 Armor pa armored cables umaku juketh i ngom pi gwoko cing gi zo.
10.2.12 I intermediate junction boxes, waya ma pire tek ma jupoko kudu ucikere ni bedu ku waya mir arionde ma jutiyo kudu ku terminals. Jam gwoko piny matung tung umaku juketh gi tung tung manangu juporo ngo man umaku juketh gi insulated.
10.2.13 Ka piny ma mitere pi jwigo peko utiye, spare cores in multi-core cables umaku juketh gi i kabedo acel. Pi waya ma jugwoko, spare cores man shielding layer umaku juketh i thenge acel.
2.SH/T 3081-2019 "Cik mi yubu piny pi ketho piny i tic mi petroleum man chemical"
APPENDIX A
(Normative Appendix)
Map mi grounding pa cable ma jugwoko
The shielding layer pa multi-core main cable in overall screen division ucungo ikum cabinet room calu ma ju nyuthu i cal A-1. The shielding layer pa multi-core main cable in overall screen division jupoko man jukubo ku junction box man cabinet room calu ma ju nyuthu i cal A-2. The shielding layer pa multi-core main cable in overall screen division ucungo ikum cabinet room calu ma ju nyuthu i cal A-3. The shielding layer pa multi-core main cable in overall screen division jupoko man jukubo ku junction box man cabinet room calu ma ju nyuthu i cal A-4.
Lembe mi ketho waya pi dul ma gwoko piny i cal A-1 ku A-4 nen i Table A. Waya ma wok kud i jam tic mi tic ni junction box utiye waya acel ma jugwoko nyo waya acel ma jugwoko. Waya ma juketho i junction box tiyo ku waya ma juketho ku grounding connections pi grounding connections ma yot. The shielding layers pa branch cable acel acel in Appendix Figures A-2 to A-4 umaku juket karacelu i junction box ku tic ku terminals nyo busbars.
The shielding layers pa branch cables man main cable copo bedu ma jucoko man juketho i kabedo mi control room, nyo ke tung tung i junction box man control room cabinet ma juketho i thenge.
The shielding layer pa branch cable in cal A-1 ucungo ikum shielding layer ma iye pa main cable, man shielding layer pa branch cable in cal A-3 ucungo ikum shielding layer pa main cable in junction box. Layer mi gwoko piny ma jukubothre zo ucungo i cabinet mi ot mi tic i thenge acel.
The shielding layer pa branch cables in cal A-2 ku A-4 juyike i thenge acel i junction box, ento inner shielding layer pa main cable in cal A-2 man shielding layer pa main cable i cal A-4 juketho i ground acel i control room cabinet.
The armor layer pa main cable juyike i thenge ario zoo nimakere ku cik mir 4.4.1, man cable tray mi cuma juyike i thenge ario zoo nimakere ku cik mir 4.1.8, ku ketho piny wang mapol kubang 30m.
Table A Yore mi Wiring pi Shielding Layer
Yore mi mako cing | Junction box | Coko | ||||
Jam waya kud i jam tic ma nwang i kabedo nituc i sanduku mi rwom | Multi core main cable pi screen zo man screen ma jupoko | |||||
Cal A-1 | Layer mi gwoko piny ucungo ikum waya madit nikadhu kud i terminals man epe ku ngom | Armor layer nyo metal protective tube ucungo iwi grounding busbar pi gwoko | The shielding layer ucungo ikum shielding layer pa branch cable nikadhu kud i terminals man epe ku grounded | Layer mi gwoko piny zoo ucungo iwi ngom ma gwoko piny nikadhu kud i grounding busbar | Layer mi gwoko piny ucungo iwi ngom mi tic nikadhu kud i grounding busbar | Layer mi gwoko piny zoo ucungo iwi ngom ma gwoko piny nikadhu kud i grounding busbar |
Cal A-2 | Layer mi gwoko piny ucungo iwi ngom mi gwoko piny nikadhu kud i grounding busbar | Armor layer nyo metal protective tube ucungo iwi grounding busbar pi gwoko | Layer mi gwoko piny ma oling | Layer mi gwoko piny zoo ucungo iwi ngom ma gwoko piny nikadhu kud i grounding busbar | Layer mi gwoko piny ucungo iwi ngom mi tic nikadhu kud i grounding busbar | Layer mi gwoko piny zoo ucungo iwi ngom ma gwoko piny nikadhu kud i grounding busbar |
| Junction box | Coko | ||||
Jam waya kud i jam tic ma nwang i kabedo nituc i sanduku mi rwom | Multi core main cable pi screen zo man screen ma jupoko | |||||
Cal A-3 | The shielding layer ucungo ikum main cable's overall shielding layer nikadhu kud i terminals man epe ku ngom | Armor layer nyo metal protective tube ucungo iwi grounding busbar pi gwoko | Layer mi gwoko piny moko epe | The shielding layer zoo makore ku shielding layer pa branch cable nikadhu kud i terminals man epe ku grounded | Layer mi gwoko piny moko epe | Jam gwoko piny eca ucungo iwi ngom mi tic nikadhu kud i grounding busbar |
Cal A-4 | Layer mi gwoko piny ucungo iwi ngom mi gwoko piny nikadhu kud i grounding busbar | Armor layer nyo metal protective tube ucungo iwi grounding busbar pi gwoko | Layer mi gwoko piny moko epe | Layer mi gwoko piny zoo utiye nono | Layer moko ope | Jam gwoko piny eca ucungo iwi ngom mi tic nikadhu kud i grounding busbar |
Tic mi gedo man cal mi kwo mandha:
Gwoko piny pa dul ma gwoko piny i thenge ma iye pa waya mi tela i ot cabinet epe ku winjiri ku ka safety barriers (Gwok mi bedo kend peris, surge protectors, etc.) juyike. Ka epe ku piny moko ma pire tek i waraga mi yiku piny, umitu jutim gi maber nimakere ku lembe ma jukwanu.
