Dalilai na Fadada Kudin Pad-Mounted Transformers

1. Inganci na Yadda Ake Amfani Da Ita

Tashar fanni na yadda ake amfani da ita wata kula mai sarrafa cikin gida.

1.1 Tarihin Kudin Sarrafa

1.2 Bayanin Tarihin Kudin Sarrafa na Tsarin
2. Tashar Kudin Sarrafa

(1) Makarantar da Dukkuka Mafi Yawan Gari

• Dukkuka da Makaranta na Baka da Kudin Sarrafa: Kranu, lori, winchi, chain hoist, three-step rack, cribbing, steel wire rope, strap rope, rolling bar.

• Dukkuka da Makaranta na Baka da Kudin Sarrafa: Bench grinder, electric welding machine, gas welding tools, electric hammer, adjustable wrench, hammer, pipe-threading die, electrician's ladder, electric drill.

• Dukkuka da Makaranta na Baka da Kudin Sarrafa: Steel tape measure, steel ruler, level, plumb bob, megohmmeter, multimeter, clamp-on ammeter, thermometer, bridge and test instruments.

(2) Yanayin Kudin Sarrafa

• Tasirin kudin sarrafa da tushen fanni suna da su ne da su dace.

• Kudin sarrafa na ilimi an samu shi daidai, da ma ake yi bayanin abin da suka sauri, girman da suka sauri, tsarin da suka sauri, da kuma inganci na abin da suka sauri masu nuna.

• Yanayin ya kasance da hanyoyin kasa suna da su ne.

• Asisken kula mai sarrafa cikin gida ta ba da tasirin da ita ce, da kuma alama da kasa masu nuna a kan asisken kula mai sarrafa cikin gida da alamun da kasa masu nuna suna da su ne da su dace.

(3) Masu Kudin Sarrafa:

• Masu Kudin Sarrafa Na Baka: Electricians, crane operators, commissioning workers. Masu kudin sarrafa suna da zama da yanayin karatu masu lafiya da kuma ake yi aiki da takardun.

3. Tashar Karfin Kula

Idan kula mai sarrafa cikin gida ta bazu zuwa yanayin kudin sarrafa, tasha kula mai sarrafa cikin gida, karfin kula, parametere na sunayen alama, tushen da aka baza da su, da kuma dukkiyar da kuma abubuwan da aka baza da su.

(1) Duba takardun da tushen fanni. Kula mai sarrafa cikin gida ya shiga tashar fanni na ilimi.

(2) An sanar da alama na kula. Alaman ya shiga sunayen masarautar, ingancin da suka faɗa, girman da suka faɗa da kuma girman da suka faɗa, current, impedance voltage (%), connection group, da kuma abubuwan da suka fiye da fanni. Abubuwan da aka baza da su suna da su ne da su dace; abubuwan da suka fiye da fanni suna da su ne da su dace; abubuwan da suka fiye da taili suna da su ne da su dace; abubuwan da suka fiye da taili na kasa mai sarrafa cikin gida suna da su ne da su dace; da kuma kofin da aka baka da su suna da su ne da su dace.

(3) Section Steel: Sabon section steel suna da su ne da su dace da suka fiye da fanni da kuma babu karamin da suka fiye da fanni.

(4) Bolts: Ba a yi amfani da galvanized bolts ba, saboda anchor bolts da kuma bolts of anti-vibration devices, da kuma flat washers da spring washers.

4. Kudin Sarrafa Cikin Gida na Kula Mai Sarrafa Cikin Gida

(1) Yi amfani da makaranta mai mahimmanci don kudin sarrafa daga kusa.
(2) Saka kula mai sarrafa cikin gida a kan asisken da aka baka da su. Sannan kada kungiyar da ke duniya a kan asisken da kula mai sarrafa cikin gida da kula mai sarrafa cikin gida da cement mortar don kada rainwater ya zama a kan kungiyar. Kudin sarrafa high-voltage da low-voltage cables ta hanyar sealing plates da ke duniya a kan high-voltage da low-voltage chambers.

(3) Kada kungiyar da ke duniya a kan cable da conduit don kada water ingress.
(4) Idan kudin sarrafa ta shiga, bayyana da ground reliable: Two main grounding terminals a kan slot na base na substation, neutral point da enclosure na kula, da kuma lower terminal na arrester, yawancin da za su iya ground directly. Yi amfani da set na grounding devices don dukan grounding points. Drive grounding piles a kan four corners na foundation sannan connect them into a single unit. Grounding resistance ya shiga less than 4 ohms, da kuma kungiyoyin grounding leads da ke duniya a kan grounding grid to the pad-mounted substation suna da su ne da su biyu.

5. Tashar Kudin Sarrafa Da Electrical Testing

(1) Tashar kula mai sarrafa cikin gida suna da su ne da su dace da tushen:
Idan kula mai sarrafa cikin gida an samu shi da sabon units, namely high-voltage switchgear, low-voltage switchgear, da kuma kula, tashar high-voltage electrical equipment part ya shiga tushen Standard for Acceptance Test of Electrical Equipment in Electrical Installation Engineering (GB50150) da kuma an samu shi da su dace.

(2) Idan kula mai sarrafa cikin gida an samu shi da high-voltage switch fuses da kula a kan sabon sealed oil tank, tashar suna da su ne da tushen fanni da aka bayar da su.

(3) Tashar low-voltage switchgear suna da su ne da tushen:
Sunayen model na kada distribution switch da protection device suna da su ne da su dace;
Insulation resistance value between phases and between phases and ground ya shiga greater than 0.5MΩ;
AC withstand voltage test voltage for electrical devices is 1kV. Idan insulation resistance value ya shiga greater than 10MΩ, zan iya yi amfani da 2500V megohmmeter instead. Duration of the test is 1 minute, da kuma babu flashover or breakdown phenomena.

6. Tasirin Dukurin

(1) Tushen: Factory-provided documents, installation and test records, construction drawings, da kuma explanatory documents for design changes, etc.

(2) Idan kula mai sarrafa cikin gida ta shiga, yi tashar comprehensive don kula mai sarrafa cikin gida.

• High-voltage plug ya shiga connected reliably; arrester da kula mai sarrafa cikin gida suna da su ground reliably.

• Dukkan meters a kan high-voltage side suna da su indicate normally.

• Plug-in fuse tube ya shiga installed in place; tap-changing switch ya shiga correct position; load switch ya shiga open position.

• Dukkan electrical components a kan low-voltage side suna da su shiga open state.

Idan tashar ta shiga, idan kana kudin sarrafa power supply da kuma operation da load switch, duba instructions for load switch operation a kan inner side of the high-voltage side door panel, sannan kana iya kudin sarrafa da kula mai sarrafa cikin gida.

References

• DL/T 5190.5 - 2004 Technical Specification for Construction and Acceptance of Electric Power Construction.

• GB 50150 - 2006 Standard for Acceptance Test of Electrical Equipment in Electrical Installation Engineering.

• DL/T 5161 - 2002 Regulations for Quality Inspection and Evaluation of Electrical Installation Engineering.