Tam sim no transformers ntawm clamp meters yuav roughly muab faib ua ob peb pawg
Tam sim no transformer
Thaum ntsuas qhov loj tam sim no ntawm alternating tam sim no, nws yog ib qho tsim nyog los hloov nws mus rau qhov sib xws tam sim no rau kev yooj yim ntawm kev ntsuas ntsuas theem nrab (qhov ntsuas thib ob ntawm tam sim no transformers hauv Suav teb yog 5A lossis 1A). Tsis tas li ntawd, qhov hluav taws xob ntawm txoj kab yog qhov siab, thiab kev ntsuas ncaj qha yog qhov txaus ntshai heev. Tam sim no transformer plays lub luag haujlwm hauv kev hloov pauv tam sim no thiab kev sib cais hluav taws xob. Nws yog ib qho sensor siv los ntawm cov khoom siv thib ob xws li ntsuas ntsuas thiab kev tiv thaiv relay hauv lub zog hluav taws xob kom tau txais cov ntaub ntawv hluav taws xob tseem ceeb tam sim no. Tam sim no transformer converts siab tam sim no mus rau tsawg tam sim no proportionally. Thawj sab ntawm lub transformer tam sim no txuas nrog lub hauv paus system, thaum lub thib ob sab yog txuas nrog ntsuas ntsuas thiab kev tiv thaiv relay.
Thaum lub sijhawm ua haujlwm ib txwm muaj, qhov thib ob ntawm lub tshuab hloov pauv yog nyob rau hauv kwv yees luv luv-circuit xeev, thiab cov zis hluav taws xob tsawg heev. Yog hais tias qhov thib ob winding yog qhib Circuit Court los yog thawj winding ntws txawv txav tam sim no (xws li xob laim tam sim no, resonant overcurrent, capacitor them tam sim no, inductor pib tam sim no, thiab lwm yam) thaum lub sij hawm ua hauj lwm, overvoltage ntawm ntau txhiab volts los yog txawm kaum tawm txhiab volts yuav yuav generated nyob rau theem nrab. Qhov no tsis tsuas yog ua rau muaj kev hem thawj rau lub rwb thaiv tsev ntawm cov txheej txheem thib ob, tab sis kuj ua rau lub tshuab hluav taws xob ua kom zoo siab heev thiab hlawv tawm, txawm tias ua rau muaj kev nyab xeeb ntawm cov neeg ua haujlwm.
Tam sim no transformer
Cov thawj sab tsuas muaj ib mus rau ob peb lub lem, thiab cov hlau muaj ib tug loj cross-sectional cheeb tsam, uas yog kev cob cog rua nyob rau hauv series mus kuaj Circuit Court. Qhov thib ob sab muaj ntau yam lem thiab nyias nyob ntawm tej, tsim ib tug kaw Circuit Court nrog cov twj paj nruag nrog qis impedance (tam sim no coils ntawm ammeters / hwj chim meters).
Kev ua haujlwm ntawm lub tshuab hluav taws xob tam sim no yog sib npaug rau lub tshuab hluav taws xob nrog rau sab thib ob luv luv Circuit Court, tsis quav ntsej txog qhov excitation tam sim no. Tus naj npawb ntawm ampere tig yog sib npaug, I1N1=I2N2
Qhov tam sim no piv ntawm thawj winding tam sim no I1 thiab theem nrab winding tam sim no I2 ntawm lub transformer tam sim no hu ua qhov tseeb tam sim no piv I1/I2=N2/N1=k.
Excitation tam sim no yog qhov tseem ceeb ntawm qhov yuam kev.
Qhov tseeb theem ntawm transformer tam sim no siv rau kev ntsuas yog {{0}}.2/0.5/1/3, qhov twg 1 qhia tias qhov kev hloov pauv qhov yuam kev tsis tshaj ± 1%. Tsis tas li ntawd, kuj tseem muaj 0.2S thiab 0.5S qib.
2. Kev tiv thaiv tam sim no transformers
Kev tiv thaiv tam sim no transformers tau muab faib ua: 1. Overload tiv thaiv tam sim no transformers, 2. Differential tiv thaiv tam sim no transformers, 3. Grounding tiv thaiv tam sim no transformers (zero sequence tam sim no transformers)
Kev tiv thaiv tam sim no transformer feem ntau yog siv los ua ke nrog cov khoom siv relay los muab lub teeb liab los txiav tawm qhov txhaum ntawm lub tshuab hluav taws xob rau cov khoom siv hluav taws xob thaum lub sij hawm luv luv Circuit Court overload los yog lwm yam txhaum hauv kab, txhawm rau tiv thaiv kev nyab xeeb ntawm cov khoom siv hluav taws xob. qhov system. Kev ua haujlwm thiab ntsuas tam sim no ntawm kev tiv thaiv tam sim no transformers
tiv thaiv tam sim no transformer
Transformers sib txawv kiag li, kev tiv thaiv transformers tsuas yog pib ua hauj lwm zoo thaum tam sim no ob peb zaug los yog kaum lub sij hawm siab tshaj li qub. Cov kev cai tseem ceeb rau kev tiv thaiv transformers yog: 1. Txhim khu kev ruaj ntseg rwb thaiv tsev, 2. Txaus siab txwv coefficient, 3. txaus thermal thiab dynamic stability.
