Troubleshooting Common Faults nyob rau hauv Mining Switchgear

Mining switchgear ua haujlwm nyob rau hauv ib puag ncig hnyav (humid, plua plav, loj voltage hloov), ua rau muaj ntau hom kev txhaum. Kev paub txog kev ua txhaum cai yog qhov tseem ceeb rau kev ua kom muaj kev ruaj ntseg hauv cov mines. Cov hauv qab no yog cov txheej txheem kev ua txhaum ntau:

1. Rwb thaiv tsev txhaum

Cov tsos mob: Tshem tawm suab lossis tsw txawv txav hauv lub tshuab hloov pauv; rwb thaiv tsev saib xyuas lub tswb; tiv thaiv kev tawm mus.

Ua rau: qhov chaw ntub dej thiab cov plua plav siab ua rau muaj kev sib kis thiab ya raws ntawm cov khoom siv insulator; cov khoom aging thiab deterioration ntawm rwb thaiv tsev cov ntaub ntawv kev ua tau zoo; kev laus thiab kev puas tsuaj rau cov pob qij txha los yog cov terminals; surge arrester kev tawg.

Kev daws:
① Ntxuav thiab qhuav qhov chaw ntawm cov khoom insulating tom qab kaw;
② Ntsuas cov rwb thaiv tsev tiv thaiv hauv av thiab nruab nrab ntawm theem siv megohmmeter;

③ Qhuav sab hauv ntawm lub txee thiab txhim kho qhov cua thiab dehumidification.

 

2. Tsis kam qhib/kaw

Cov tsos mob: Tom qab nias lub khawm kaw, lub tshuab electromagnet qhib, tab sis cov kev sib txuas ntawm cov hluav taws xob tsis raug kaw.

Ua rau: Tsis muaj qhov hluav taws xob hauv kev tswj fais fab; Secondary Circuit Court txhaum; mechanical txhaum nyob rau hauv kev khiav hauj lwm mechanism, xws li jammed kis tau tus mob Cheebtsam, ntau clearance, los yog uncharged zog cia caij nplooj ntoos hlav.

Kev daws teeb meem:

① Txheeb xyuas qhov hluav taws xob tswj hluav taws xob thiab fuses; ntsuas yog qhov voltage yog li qub.

② Disconnect lub hwj chim mov, manually sim qhib thiab kaw ntawm lub Circuit Court breaker, ntxuav lub hlau core, thiab ntxiv lubricant.

③ Ntsuas qhov tsis kam ntawm lub kauj kaw; tus nqi ib txwm yog ob peb kaum ntawm ohms. Yog tias muaj cov xaim tawg lossis luv luv, hloov lub kauj.

 

3. Kev ua haujlwm tsis zoo

Cov tsos mob: Lub switchgear mus txawv tebchaws tsis muaj teeb meem ua haujlwm thaum lub sijhawm ua haujlwm ib txwm; cascading tripping tshwm sim thaum cov khoom siv tshwj xeeb pib.

Uas: Kev tiv thaiv tsis raug; electromagnetic cuam tshuam ua rau muaj kev cuam tshuam tsis tseeb ntawm kev tswj Circuit Court; dej ingress los yog ya raws hauv lub thawv mechanism ua rau luv luv Circuit Court nyob rau hauv kev sib cuag.

Kev daws:

① Sau cov cai txhaum cai, txheeb xyuas thiab rov xam qhov teeb tsa kev sib tw;

② Tshawb xyuas electromagnetic compatibility thiab siv kev tiv thaiv kev ntsuas rau cov kab teeb liab;

③ Muab cov khoob khoob hauv lub txee thiab nruab lub rhaub kom tshem tawm cov dej noo.

 

4. Qhov txhaum cai

Cov tsos mob: Cov dej ntws sib cuam tshuam tau qhib, thiab qhov hloov pauv tsis tuaj yeem raug kaw.

Ua rau: Kev puas tsuaj rwb thaiv tsev ntawm lub load- sab cable lossis ya raws hauv lub cev muaj zog; puas rwb thaiv tsev ntawm internal terminals thiab nyob ntawm tej nyob rau hauv lub hloov ua grounding.

Kev daws:

① Disconnect lub load cable thiab sim hloov ib tus zuj zus los txiav txim seb qhov dej xau nyob rau sab hauv lossis sab nraum qhov hloov pauv;

② Yog tias qhov txhaum nyob hauv qhov hloov pauv, tsom mus rau kev kuaj xyuas cov rwb thaiv tsev ntawm cov khoom siv hluav taws xob tseem ceeb.

 

5. Txee overheating

Cov tsos mob: Qhov kub tsis zoo ntawm lub txee saum npoo; infrared tus pas ntsuas kub qhia tau tias kub siab heev ntawm kev sib cuag lossis kev sib txuas ntawm busbar; muaj qhov kub hnyiab.

Ua rau: Kev sib cuag tsis zoo hauv qhov hluav taws xob hluav taws xob; kev ua haujlwm ntev overload; tsis zoo ambient kub dissipation; thaiv qhov qhov cua.

Kev daws:
① Tighten lub nraub qaum - zawm Circuit Court txuas bolts tom qab fais fab tuag; tshuaj xyuas thiab hloov cov neeg uas hnav;

② Yog tias qhov kuaj pom tam sim no tshaj qhov ntsuas tus nqi, kho cov khoom thauj lossis hloov nrog ntau dua - lub peev xwm hloov;

③ Ntxuav qhov qhib qhov cua thiab cua txias.