Ko da aiki da Daidaita Gwamnati na Tansufa?

Yawan DC resistance: Amfani da kafin taurari don yawan resistance ta DC na kawo-kawon gaba da kawo-kawon faduwar. Tattauna cewa sama duwatsu da kawo-kawon suna da take daidai da kuma sama da bayanan mai gaske. Idan ba zan iya yawan phase resistance bace-bace, zaka iya yawan line resistance. Yawan DC resistance zai nuna cewa kawo-kawon suka da shiga, ko kuma idan akwai shortcut da kawo-kawon, ko kuma idan contact resistance ta tap changer ya zama daidai. Idan yawan DC resistance ya zama da shirya a lokacin da aka yi tap change, wannan ya nuna cewa abin da ya faru suna da tabbataccen masu tap, wanda ba zan iya kasancewa kawo-kawon. Wannan test na nuna cewa sama da shiga ga connections daga bushing studs zuwa leads, da kuma daga leads zuwa kawo-kawon.

Yawan insulation resistance: Yawan insulation resistance daga kawo-kawon zuwa kawo-kawon, da kuma daga kawo-kawon zuwa ground, da kuma polarization index (R60/R15). Daga wasu yawan haka, ana iya nuna cewa idan insulation ta kawo-kawon ta yi shiga, ko kuma idan akwai risk ta breakdown ko flashover daga kawo-kawon zuwa kawo-kawon ko zuwa ground.

Yawan dielectric loss factor (tan δ): Amfani da GY-type Schering bridge don yawan dielectric loss factor (tan δ) daga kawo-kawon zuwa kawo-kawon, da kuma daga kawo-kawon zuwa ground. Abubuwan yawan haka zai nuna cewa idan insulation ta kawo-kawon ta yi shiga ko kuma idan an yi overall degradation.

Kawo sampuli na insulating oil don simplified testing: Amfani da flash point tester don nuna cewa idan flash point ta insulating oil ta zama da shirya. Bincika oil game da carbon particles, paper fibers, da kuma nuna cewa idan akwai burnt odor. Idan akwai gas chromatography analyzer, za a iya yawan gas content a kan oil. Wasu hukuma haka zai taimakawa wajen nuna cewa abin da nature ta internal faults.

No-load test: Yi no-load test a kan transformer don yawan three-phase no-load current da no-load power loss. Wasu yawan haka zai taimakawa wajen nuna cewa idan akwai faults daga silicon steel laminations a kan core, short circuits a kan magnetic circuit, ko kuma short circuits a kan kawo-kawon.