1. Misaunin Gida
Misauni 1 (16 ga watan Yuli, 2024)
Yakin da yaki na gargajiya ya samu tattaunawa game da kusa da jirgin shiga, wanda ya haifar da masu amfani da kuma abubuwan da ake amfani da su. Na da dukar O&M, an yi nemo cewa jirgin shiga ta gama amma akwai tasiri ga muhimmiyar abubuwa - amma layi/cabinet ta shiga.
Manhajojin nemo:
Relays, contactors, AC contactors sun nemo → switching power supply bai da ci gaba ba.
Inverter, fuse, AC power sun nemo → an sami layi.
Nemon duniya: AC power da modules sun zama lafiya; secondary wiring ta zama lafiya.
Tasirin fan: Fan ya sauka amma ta shiga. An tabbatar da fan mai tsabta (coil mai gaba, leakage) don hana inganci (8.5kW load, 4 - hour test).
Misauni 2 (5 ga watan Agusta, 2024)
Masu amfani a birnin da ke nuna da dead display/non-charging pile. O&M na gargajiya sun yi sarrafa bai gama, saboda haka na call for support.
O&M na kamfanin an nemo:
Abnormal three-phase voltage (L1-N: 0V; L2/L3-N: 360V; L1-L3: 360V) → ana hasashen phase fault.
Auxiliary switch: components sun zama lafiya amma voltage bai lafiya ba. Reconnection/test ya bai layi/ground shiga. Pole-climbing adjustments and equipment replacement failed.
Na da coordination da tattaunawa masu birni, an sami cewa layi na kasa mai rarrabe sun gama (yanayi ne karkashin bayanai ko stone rolling). An tabbatar da 30+ meters of 35mm² cable don hana voltages/electronics. An nemo cewa fault ta fara ne a layin transformer-pile; an tabbatar da main cable don hana lafiya.
2. Tabbaccewa Misau
Misauni 1: Insulation failure na cooling fan (leakage). Issues na fan (non-rotation, noise) sun fara ne da defects mai mahimmanci.
Misauni 2: Non-standard construction (ba a fa pipe na lafiya, ba a fa "buried cable" mark). Civil team bai tafi O&M ko a tattauna post-work, wanda ya haifar da misau.
3. Dallata da Tips
Don masu aiki na gargajiya, nemanin lafiya, nemo, da kuma inganci a kan defects sun fi yawa (wanne misau suna da alamomin da su amma sun gama ne da hankali). Tabbaccen misau ya buƙata da context na lokaci da history na aikin gwargwadon.
Suggestions:
Connect auxiliary power from the main switch output; add residual current-protected breakers for hierarchical control. Build a platform for fault monitoring.
Construction: Follow drawings strictly. Design inspection interfaces; use protected switches. Manage processes and pre-commissioning checks.
Regular O&M patrols. Clarify team roles; ban excavator work above pile cables.
Manufacturers: Fast after-sales response. Do annual preventive tests; enforce accountability for faults.
