Yintoni ekufuneka ixhathise i-stator winding yesigaba sesithathu se-asynchronous motor kuthathwa njengesiqhelo kuxhomekeke kumthamo?(Ngokuphathelele ukusebenzisa ibhulorho kunye nokubala ukuxhathisa ngokusekelwe kwidayamitha yocingo, yinto engenakwenzeka.) Kwiimotor ezingaphantsi kwe-10KW, i-multimeter ilinganisa kuphela ii-ohms ezimbalwa. Kwi-55KW, i-multimeter ibonisa ezimbalwa zeshumi. Ungayihoyi i-inductive reactance okwangoku. Kwi-3kw i-motor edityaniswe inkwenkwezi, i-multimeter ilinganisa ukuchasana kokujikeleza kwesigaba ngasinye ukuba ibe malunga ne-5 ohms (ngokwegama le-motor nameplate, yangoku: 5.5A. Power factor = 0.8. Inokubalwa ukuba i-Z = 40 ohms, R = 32 ohms). Umahluko phakathi kwezi zimbini nawo mkhulu kakhulu.

Ukusuka ekuqalisweni kwemoto ukuya kwinqanaba lokuqala lokusebenza komthwalo ogcweleyo, i-motor ibaleka ixesha elifutshane kwaye ubushushu abukho phezulu. Emva kokubaleka iyure eli-1, iqondo lobushushu liyenyuka ngokwendalo ukuya kuthi ga kwinqanaba elithile, ngaba amandla emoto aya kuhla kakhulu emva kweyure enye?Ngokucacileyo akunjalo!Apha, ndiyathemba ukuba abahlobo abanamava bombane banokukwazisa ukuba ulinganisa njani. Abahlobo nabo babhidekileyo xa belungisa iimotor bangabelana ngendlela oyiqonda ngayo?

Yongeza umfanekiso ukuze ubone:

Ukuxhathisa kwesigaba esithathu sokujika kwemoto kulinganiswa ngolu hlobo lulandelayo:

1. Khulula iqhekeza lokudibanisa phakathi kwee-motor terminals.

2. Sebenzisa i-low-resistance range ye-digital multimeter ukulinganisa ukuchasana ekuqaleni nasekupheleni kwee-windings ezintathu zemoto. Kwiimeko eziqhelekileyo, ukuchasana kwee-windings ezintathu kufuneka kulingane.Ukuba kukho impazamo, impazamo ayinakuba nkulu kuno-5%.

3. Ukuba i-motor winding resistance ingaphezu kwe-1 ohm, inokulinganiswa ngebhuloho yengalo enye. Ukuba i-motor winding resistance ingaphantsi kwe-1 ohm, inokulinganiswa ngebhulorho ephindwe kabini.

Ukuba kukho umahluko omkhulu wokuchasana phakathi kwe-motor windings, oko kuthetha ukuba i-motor windings ineesekethe ezimfutshane, iisekethe ezivulekileyo, i-welding engafanelekanga kunye neempazamo kwinani lokujika okujikelezayo.

4. Ukumelana nokugquma phakathi kwee-windings kunye nokumelana nokugquma phakathi kwee-windings kunye namaqokobhe angalinganiswa ngolu hlobo:

1) Injini ye-380V ilinganiswa nge-megohmmeter kunye noluhlu lokulinganisa lwe-0-500 megohms okanye i-0-1000 megohms.Ukuchasana kwayo kwe-insulation ayikwazi ukuba ngaphantsi kwe-0.5 megohms.

2) Sebenzisa i-megohmmeter enoluhlu lokulinganisa lwe-0-2000 megohms ukulinganisa i-motor-voltage ephezulu.Ukuchasana kwayo kwe-insulation ayikwazi ukuba ngaphantsi kwe-10-20 megohms.

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Ixesha lokuposa: Oct-15-2023