Kasin makapangipaliis ka na grounding diad pangiyan mo labat na saray safety barriers? Sarayan dua et agbalot tepet ya saksakey so pilien!

"Kasin saray Control Cable ed Cabinet Room et Mansiansia ya Ag-aka-ground ya Walay Safety Barriers? Wala ray manisia ya "no walay safety barriers parad proteksion ed surge tan interference isolation, say pangi-ground ed saray control cable shielding layers et nayarin gawaen ya kaslakan labat." Balet, saray matukoy ya estandarte et malinew ya mangibabaga na saray kakaukolanen tan paraan pian na-ground iray shielding layers na control cabine ed cabinet room. Say pangi-ground ed shielding layer na control cables ed loob na cabinet room et misiglaotan ed kiwawala na saray safety barriers?Natan, ipalinew mi so amin nipaakar ed pangi-ground ed saray shielding layers na control cables diad cabinet room.”

Say pangi-ground ed shielding layer na control cables ed cabinet roommanunan manseserbi pian naresistian so pakaabala, ya walaan na sarayan espisipikon kimey tan gagala:

1.Pangiprebenta ed external electromagnetic interference: No aka-ground la, say shielding layer et singa "barrier," ya mangidirehi ed saray kuryente ya nanlapud external electromagnetic fields ya onloob ed dalin, diad ontan et ag makaloob iray interference signal ed kable tan naapektoan so inkasusto na saray transmitted control signal.

2.Say pangisebel ed saray signal ed loob ya makaamper ed saray kagawaan ed paway: Saray signal ya ipapasabi ed loob na kable et nayarin mamawala na electromagnetic fields. Say grounded shielding layer et makaamper ed sarayan lawak ya onkayat ed paway, pian napaliisan so pakaabalaan na saray kagawaan ed kaliberliber.

3.Protektaan so kaligenan na kagawaan tan saray totoo: No say shielding layer et ag-aka-ground, say static buildup odino abnormal iran boltahe so nayarin pansengegan na ag-inkayadyari na kagawaan. Say pangi-ground et mamaarap ed saray sobran karga ed dalin, kanian nabawasan so peligro ed kaligenan.

Saray manunan estandarten kakaukolanen tan kagagawa parad pangi-ground ed saray shielding layers na control cable ed cabinet room:

1.GB 50093-2013 "Code for Construction and Quality Acceptation of Automation Instrumentation Engineering

10.2.10 Say proteksion na saray kable tan alambre na instrumento et nepeg ya i-ground ed control room panel/cabinet side. Say proteksion a layer na parehon sirkito et nepeg ya walaan na napanmatalkan ya electrical continuity tan ag nepeg ya paulyanan ya onleletaw odino man-ground ya paulit-ulit.

10.2.11 Say armor na saray armored cable et nepeg ya aka-ground parad proteksion ed duaran sampot.

10.2.12 Diad saray intermediate junction box, saray subdivided shielding layers na primary cable et nepeg ya ikonekta ed saray segundaryon cable shielding layers ya uusaren iray terminal. Saray nanduruman shielding layers et nepeg ya ikonekta ya manbibiigan ya anggapoy panlalaok tan nepeg ya na-insulate.

10.2.13 No wala ray kakaukolanen ya anti-interference, saray spare core ed multi-core cables et nepeg ya i-ground ed saksakey a punto. Parad saray shielded cable, saray spare cores tan say shielding layer et nepeg ya aka-ground ed parehon diking.

2.SH/T 3081-2019 "Design Code parad Instrument Grounding ed Petrolyo tan Chemical Industries"

APPENDIX A

(Normative Appendix)

Mapa na grounding na shielded cable

Say shielding layer na multi-core main cable ed interon screen division et tuloytuloy ya akakonekta ed cabinet room a singa nanengneng ed Figure A-1. Say shielding layer na multi-core main cable ed inkalapagan ya screen division et naapag tan akakonekta ed junction box tan cabinet room a singa nanengneng ed Figure A-2. Say shielding layer na multi-core main cable ed inkalapagan ya screen division et tuloytuloy ya akakonekta ed cabinet room a singa nanengneng ed Figure A-3. Say shielding layer na multi-core main cable ed inkalapagan ya screen division et naapag tan akakonekta ed junction box tan cabinet room a singa nanengneng ed Figure A-4.

Saray instruksion ed panag-wiring parad shielding layer ed Figures A-1 anggad A-4 et nanengneng ed Table A. Say branch cable manlapud field instrument ya anggad junction box et sakey a shielded cable odino sakey a armored shielded cable. Saray armored cable ya onloloob ed junction box et manguusar na cable joints ya walay grounding connections to pian mainomay so grounding connections. Saray shielding layers na kada branch cable ed Appendix Figures A-2 anggad A-4 et nepeg ya ikonekta ed junction box ya uusaren iray terminal odino busbar.

Saray shielding layers na branch cable tan main cable et nayarin ikonekta tan i-ground ed control room cabinet, odino manbibiigan ed junction box tan control room cabinet ya mangi-ground ed seksion.

Say shielding layer na branch cable ed Figure A-1 et akakonekta ed loob na shielding layer na manunan kable, tan say shielding layer na branch cable ed Figure A-3 et akakonekta ed shielding layer na manunan kable diad junction box. Say sigpot ya akakonekta ya shielding layer et aka-ground ed control room cabinet diad sakey a sampot.

Say shielding layer na saray branch cables ed Figures A-2 tan A-4 et aka-ground ed saksakey a sampot na junction box, bangta say inner shielding layer na manunan kable ed Figure A-2 tan say shielding layer na manunan kable ed Figure A-4 et aka-ground ed saksakey a sampot na control room cabinet.

Say armor layer na manunan kable et aka-ground ed duaran sampot unong ed Article 4.4.1, tan say metal cable tray et aka-ground ed duaran sampot unong ed Article 4.1.8, ya paulit-ulit ya aka-ground kada 30m.

Table A Paraan na Pan-wiring parad Shielding Layer

Praktikal ya aplikasyon ed inhenyeriya tan saray litrato na tua ed lugar:

Say pangi-ground ed shielding layer ed loob na control cable ed cabinet room et ag mikonektaan ed no kasin saray safety barriers (Isolation Barriers, surge protectors, tan arum nira) so aka-configure. Likud no wala ray espisyal ya kakaukolanen ed saray dokumento na desinyo, kaukolan ya istrikton ipatupad iratan unong ed saray detalye.