Ngokumalunga nokusetyenziswa kwe-low voltage circuit breaker

Nika ingqalelo kula manqaku alandelayo xa ufaka i-low-voltage circuit breakers:

1.Ngaphambi kokufaka i-breaker circuit, kuyimfuneko ukujonga ukuba i-oil stain kwindawo yokusebenza ye-armature iye yacinywa, ukuze ingaphazamisi ukusebenza kwayo.

2.Xa ufaka i-circuit breaker, kufuneka ifakwe ngokuthe nkqo ukuphepha ukuchaphazela ukuchaneka kwesenzo kunye nokukwazi ukukhupha ukukhutshwa, kunye nokukhuselwa kwe-insulation kufuneka kufakwe.

3.Xa i-terminal ye-circuit breaker ixhunyiwe kwi-bar yebhasi, akukho xinzelelo lwe-torsional luvunyelwe, kwaye ukufaneleka kwexabiso le-short-circuit tripping value kunye ne-thermal tripping value kufuneka ihlolwe.

4. Umbane ongenayo umbane ongenayo kufuneka udityaniswe kwintloko yekholomu ephezulu kwicala legumbi lokucima i-arc, kwaye umgca ophumayo womthwalo kufuneka uqhagamshelwe kwintloko yekholomu ephantsi kwicala lokukhululwa, kunye nomgca wokudibanisa kunye indawo efanelekileyo ye-cross-sectional kufuneka ikhethwe ngokwemigaqo yokuphepha ukuchaphazela uhambo oludlulayo.Iimpawu zokukhusela ze-clasp.

5.I-wiring yendlela yokusebenza kunye nombane we-circuit breaker kufuneka ichaneke.Ngethuba lokusebenza kombane, ukuxhuma ukuxhuma kufuneka kugwenywe, kwaye ixesha-ngexesha akufanele lidlule ixabiso elichaziweyo.

6.Ngexesha lokuvala kunye nokuvula inkqubo yabafowunelwa, akufanele kubekho i-jamming phakathi kwendawo ehambayo kunye neengxenye zegumbi le-arc.

I-7.Indawo yoqhagamshelwano yoqhagamshelwano kufuneka ibe tyaba, kwaye uqhagamshelwano kufuneka lube lukhuni emva kokuvala.

8.Ixabiso lohambo lwesekethe emfutshane kunye nexabiso lohambo lwe-thermal kufuneka lusetwe ngokuchanekileyo ngokweemfuno zomgca nomthwalo.

I-9.Ngaphambi kokusetyenziswa, sebenzisa i-500V megohmmeter ukulinganisa ukuxhatshazwa kwe-insulation phakathi komzimba ophilayo kunye nesakhelo, phakathi kwezibonda, naphakathi kwecala lamandla kunye necala lomthwalo xa i-breaker circuit inqanyuliwe.Qinisekisa ukuba ukuxhathisa ukugquma kukhulu okanye kuyalingana ne-10MΩ (i-breaker circuit yaselwandle Akukho ngaphantsi kwe-100MΩ).

Oku kulandelayo zizinto ezifunekayo kwi-low-voltage circuit breaker wiring:

1.Kwiitheminali zocingo ezivezwe ngaphandle kwebhokisi kwaye zifikeleleke ngokulula, ukukhuselwa kwe-insulation kuyadingeka.

2.Ukuba i-low-voltage circuit breaker ine-semiconductor tripping device, i-wiring yayo kufuneka ihlangabezane neemfuno zokulandelelana kwesigaba, kwaye isenzo sesixhobo sokukhwela kufuneka sithembeke.

Oku kulandelayo kukufakelo, uhlengahlengiso kunye neemfuno zovavanyo kwi-DC fast circuit breakers: 1. Ngexesha lofakelo, kuyimfuneko ukuthintela i-breaker circuit breaking, ukungqubana kunye nokungcangcazela okunobundlobongela, kwaye uthathe amanyathelo afanelekileyo okulwa nokungcangcazela phakathi kwentsimbi yesiseko setshaneli kunye isiseko.

2 .Umgama phakathi kwamaziko e-pole ye-breaker circuit kunye nomgama wezixhobo ezikufutshane okanye izakhiwo akufanele zibe ngaphantsi kwe-500 mm.Ukuba le mfuneko ayinakufezekiswa, kuyimfuneko ukufaka umqobo we-arc obude bungekho ngaphantsi kobude obupheleleyo bokutshintsha kwepoleni enye.Kufuneka kubekho isithuba esingekho ngaphantsi kwe-1000mm ngaphezu kwegumbi lokucima i-arc.Ukuba le mfuneko ayinakufezekiswa, xa ukutshintshwa kwangoku kungaphantsi kwama-amps angama-3000, kuyimfuneko ukufaka i-arc shield 200 mm ngaphezu kwesiphazamisi se-breaker circuit;Faka ii-arc baffles.

3.I-insulating lining kwigumbi lokucima i-arc kufuneka ihambelane kwaye i-arc passage kufuneka ivulwe.

I-4.Uxinzelelo loqhagamshelwano, umgama wokuvula, ixesha lokuqhawula, kunye nokuxhatshazwa kwe-insulation phakathi kwe-arc yokucima i-screw yenkxaso yegumbi kunye noqhagamshelwano emva kokuba uqhagamshelwano oluphambili luhlengahlengiswe kufuneka luhlangabezane neemfuno zamaxwebhu obugcisa bemveliso.