Txhim kho ntawm txoj kev txiav tawm ntawm Circuit Court

Feem ntau, thaum kho los yog kev tsim kho tshiab, nws yog lub sij hawm hloov hluav taws xob thiab lub voj voog uas yuav tsum tau hloov. Thaum peb mus rau hauv lub khw fais fab, peb yuav luag txhua zaus pom tias 99% ntawm qhov ntau ntawm cov khoom siv hluav taws xob yog ua los ntawm cov C cutoff nkhaus.Yog li, nws yuav tshwm sim tau tias qhov no tsuas yog qhov tau thiab qhov tseeb. Qhov tsab xov xwm no muaj nplooj siab txoj kev ntsuam xyuas ntawm ib qho ntawm qhov tseem ceeb cov yam ntxwv ntawm lub Circuit Court-breaker - dawm taw nkhaus.

Lub txhuav curves ntawm qhov kev sib tshuam ntawm lub voj voog yog ob seem:

• Kev thau khoom ntawm kev tiv thaiv kev kub nyhiab (thermal release): qhov siab zog tam sim no, lub sij hawm luv luv;
• Kev tiv thaiv ntawm kev tiv thaiv luv luv (electromagnetic trip): Yog tias tam sim no tshaj qhov teeb meem ntawm qhov kev tiv thaiv no, lub sijhawm qhib rau lub sijhawm tsawg dua 10 milliseconds.

Rau cov voj voog luv luv ntau tshaj 20 npaug ntawm cov nqi tam sim no, tam sim no cov yam ntxwv (tripping curves) tsis muab cov khoom kom pom tseeb.

Disabling loj luv luv-Circuit Court currents yog yus muaj los ntawm tam sim no txwv curves (surge tam sim no thiab lub zog). Lub sij hawm seem lub sij hawm yuav raug muab kwv yees li 5 npaug ntawm qhov ratio (I2t) / (I) 2.

Xyuas qhov selectivity ntawm ob lub voj voog breakthrough

Los ntawm superimposing Circuit Court breaker nkhaus mus rau ib tug nkhaus ntws los Circuit Court breaker yuav xyuas seb qhov no ua ke nrog ntawm pab kiag li lawm xyua nyob rau hauv cov ntaub ntawv ntawm overload (selectivity rau tag nrho cov qhov tseem ceeb ntawm tam sim no, kom txog thaum lub setpoint superior electromagnetic mus). Daim tshev no yuav pab tau yog thaum muaj ib qho ntawm ob qho chaw kaw hluav taws xob muaj qhov taw qhia teeb tsa; Rau cov khoom siv nrog cov chaw khaws tas li no cov ntaub ntawv muaj nyob hauv cov qauv xaiv xaiv. Yuav kom ntsuam xyuas cov selectivity rau luv luv-Circuit Court nws yog tsim nyog los sib piv lub zog yam ntxwv ntawm ob pab kiag li lawm.

Piv Txwv: Raws li txoj kev xa mus rau hauv daim duab, iC60 Schneider Electric Acti 9 qhov kev sib tshuam ntawm Circuit Court (nkhaus C, lub sij hawm tam sim no 20 A) yuav txiav tawm qhov tam sim no ntawm 100 A (uas yog, 5 npaug rau lub sijhawm tam sim no) rau:
• tsawg kawg 2 vib nas this;
• Tshaj siab tshaj plaws ntawm 7 feeb.

Cov yam ntxwv tam sim no

Kev xaiv ntawm lub sijhawm tam sim no yuav tsum tau nqa tawm raws li hom kev tiv thaiv kab mob, txij li qhov yuav tsum tau ua rau tiv thaiv hluav taws xob system yuav yeej sib txawv. Nyob rau hauv no hais txog, nyob rau hauv lub scale ntawm lub cuab yeej muaj 6 ntau curves.

Nkhaus B

Taug kev: 3 mus rau 5 Hauv (kwv yees) currents IEC 60898
Nws yog npaj feem rau kev tiv thaiv ntawm cov generators thiab nyob rau hauv uas muaj tsis muaj ncov tam sim no spikes

Nkhaus C

Taug kev: 5 mus rau 10 Hauv (ntsuas dej) IEC 60898
Nws yog npaj rau kev tiv thaiv ntawm circuits nyob rau hauv feem ntau ntawm daim ntawv thov

Tus cwj pwm D thiab K

Taug kev: 10 mus rau 14 Hauv (ntsuas dej) IEC 60947.2
Nws yog npaj los tiv thaiv circuits nrog ib tug high school cov starting tam sim no, thiab los tiv thaiv imennoo transformers thiab motors.

Ntaus Z

Taug kev: 2.4 rau 3.6 Hauv (ntsuas dej) IEC 60898
Tsim los ntawm kev tiv thaiv cov khoom siv hluav taws xob.

Nkhaus MA

Taug kev: mus txog 12 Nyob rau hauv (ntsuas dej) IEC 60898
Nws yog tsim los tiv thaiv cov khoom siv xwb, vim tias tsis muaj cov thermal disengagement ntaus ntawv.

Tsab ntawv no yog muab los ntawm ACTI9.ru