Ya kamata a tabbatar da wani fase na maimakon masu uku yana jin dadawa?

Hukuma na haka zai taimaka wajen samun fase wa mota da kisan fase da ke da gaba:

I. Hukumar nuna

Tambayata motoci

Kafin, nuna motoci don ka duba cewa akwai alama masu gaba, kamar koyarwa ko kasa mai kudana. Idan koyarwa na fase bata ne ta yi shiga, yana iya kasance cewa wannan fase na da gaba. Misali, idan motoci ya kawo muhimmanci ko kasa mai kudana, koyarwa na fase da ke da gaba za a yi shiga saboda tsakiyar dole.

Farkon haka, nuna boxin mafi girma na motoci don ka duba cewa akwai terminal blocks mai kudana, mai kawo, ko koyarwa. Idan terminal block na fase bata ne ta yi kudana ko koyarwa, yana iya kasance cewa akwai gaba a wannan fase.

Nuna halin motoci a lokacin da ya kula

A lokacin da motoci ya kula, nuna jiragen, koyarren, da kuma tsarin dogon motoci. Idan fase bata na da gaba, motoci zai iya da jiragen mai kudana, koyarren mai kudana, ko kuma tsari mai kudana. Misali, idan koyarwa na fase bata ne ta yi kudana, motoci zai iya da jiragen da koyarren mai kudana; idan koyarwa na fase bata ne ta yi kasa mai kudana, tsari na motoci zai iya zama da kudana.

Za ku iya kula kasa na motoci da kafin kan ka duba dukkan farkon tsari na fasowa. Idan tsari na fase bata ne ta fi kudana da sauran biyu, wannan fase na iya da gaba. Amma, tabbaci a lokacin da ka kula kasa na motoci don ka magance sarrafa.

II. Hukumar rarrabe

Amfani da multimeter don rarrabe resistance

Kare mafi girma na motoci, bukace boxin mafi girma na motoci, amfani da range na resistance na multimeter don rarrabe resistance values na koyarwa na fasowa. A lokacin da yake da kyau, resistance values na koyarwa na fasowa na iya daɗe daɗi ko kusa. Idan resistance value na fase bata ne ta fi kudana da sauran biyu, wannan fase na iya da open circuit, short circuit ko ground fault.

Misali, a lokacin da ake rarrabe winding resistance na motoci da kisan fase, idan resistance na fase A ce 10 ohms, resistance na fase B ce 10.2 ohms, da resistance na fase C ce 2 ohms. Resistance value na fase C ta fi kudana da sauran fase A da fase B, wanda yana kasance cewa fase C na iya da gaba.

A lokacin da ake rarrabe resistance, tabbaci a zabi range na resistance da ma ake so, amma kuma inganta cewa leads na multimeter suna da contact mai kyau da koyarwa.

Amfani da megohmmeter don rarrabe insulation resistance

Amfani da megohmmeter don rarrabe ground insulation resistance da interphase insulation resistance na koyarwa na fasowa. A lokacin da yake da kyau, insulation resistance na iya daɗe daɗi. Idan insulation resistance value na fase bata ne ta fi kudana, wannan fase na iya da ground fault ko interphase short circuit fault.

Misali, a lokacin da ake rarrabe insulation resistance na motoci da kisan fase, idan requirement na ground insulation resistance ba da 0.5 megohm. Idan ground insulation resistance na fase A da fase B ce 1 megohm, da ground insulation resistance na fase C ce 0.2 megohm, fase C na iya da ground fault.

A lokacin da ake rarrabe insulation resistance, kare mafi girma na motoci, amma kuma inganta cewa kasa na motoci ya fara da ground.

Amfani da clamp ammeter don rarrabe current

A lokacin da motoci ya kula, amfani da clamp ammeter don rarrabe three-phase currents. A lokacin da yake da kyau, three-phase currents na iya da balance ko kusa. Idan current na fase bata ne ta fi kudana da sauran biyu, wannan fase na iya da gaba.

Misali, idan motoci da kisan fase ya kula da kyau, current na fasawa na iya daɗe 10 amperes. Idan ake duba cewa current na fase A ce 10 amperes, current na fase B ce 10.5 amperes, da current na fase C ce 15 amperes. Current na fase C ta fi kudana da sauran biyu, wanda yana kasance cewa fase C na iya da overload, short circuit ko wasu gaba.

A lokacin da ake rarrabe current, tabbaci a zabi range na current da ma ake so, amma kuma inganta cewa clamp na clamp ammeter ya fara da wire.

III. Wasu hukuma

Mota fault detector

Amfani da motor fault detector mai karatu don samun fase na motoci da ke da gaba. Motor fault detectors suna iya rarrabe parameters kamar winding resistance, insulation resistance, current, voltage, da sauransu na motoci, amma kuma kaddamar type da wurin gaban motoci bayan ake kaddamar wannan parameters.

Misali, wasu motor fault detectors masu karatu suna iya samun gaban motoci mai karatu, kamar local short circuit na koyarwa da insulation aging, bayan ake amfani da technologies kamar spectrum analysis.

Hukumar kiyaye

Idan fase bata ne ta yi shiga cewa yana da gaba, za ku iya kiyaye koyarwa na fase bata ne da koyarwa na fase mai kyau. Idan gaban motoci ya zama da kyau a bayan kiyaye, yana iya kasance cewa fase na original na da gaba.

Misali, idan motoci da kisan fase na da gaba, amma fase C winding na iya shiga cewa yana da gaba. Za ku iya kiyaye fase C winding da fase A ko fase B winding. Idan motoci ya kula da kyau a bayan kiyaye, yana iya kasance cewa fase C winding na da gaba.

Duk da haka, bayan ake amfani da hukuma na nuna, hukuma na rarrabe, da wasu hukuma, fase na motoci da ke da gaba zai iya samun da kyau. A lokacin da ake kaddamar gaba, tabbaci a magance tashe, inganta cewa motoci ya kare mafi girma, amma kuma tabbas hukuma na kaddamar da steps da ma ake so.