Qhov qes-voltage ua haujlwm tshuab ntawm lub zog capacitors

Kev ua haujlwm tsawg-voltage ntawm lub zog capacitors yog hais txog qhov chaw tiv thaiv uas muaj cov khoom siv fais fab thaum lub zog hluav taws xob mus rau lub teeb tsa chaw. Yog li, dab tsi yog qhov tsawg-voltage cov tshuab ua haujlwm ntawm cov fais fab capacitors sawv cev?

Ⅰ. Nkaus Cov Kev Mob

Tus qauv teeb tsa tus nqi rau qhov kev tiv thaiv tsawg ntawm lub zog capacitor yog:

1. Kev ua qhov pib: feem ntau teeb tsa ntawm 60-80% ntawm cov ntsuas hluav taws xob (piv txwv li, hauv 400v system, nws yog teev ntawm {}} v);
2.
3. Reset Voltage: Feem ntau, nws yog {10-15% siab dua qhov kev txiav txim siab nquag hloov thiab tawm.

Ii. Ntsiab Cai ntawm Kev Tiv Thaiv Kev Tsim Kho

Kev ua haujlwm tsawg-voltage ntawm lub zog capacitors yog nyob ntawm cov txheej txheem hauv qab no:

1. Voltage sampling Circuit Court: Siv precision PT los saib xyuas lub npav hluav taws xob hauv lub sijhawm tiag tiag;
2. Logical Desenter Chav: DSP cov txheej txheem muab piv rau cov hluav taws xob muaj nuj nqis nrog cov teeb pib.
3. Cov Txheej Txheem Ua Si: Tau ua tiav los ntawm cov neeg ua haujlwm nqus neeg lossis cov thyristor hloov rau kev txiav tawm sai sai;
4. Xauv Ua Haujlwm: Tom qab ua haujlwm, nws yuav tsum tau manually \/ cia li rov pib dua kom tiv thaiv kev hloov pauv rov ua dua.

III. Cov ntsiab lus tseem ceeb rau kev thov engineering

Thaum siv qhov tsawg-voltage tiv thaiv rau lub zog capacitors, cov ntsiab lus hauv qab no yuav tsum tau sau tseg:

1. Lub chaw pib teeb tsa: teeb tsa siab dua cov kab ke ntawm cov kev ua haujlwm tsawg kawg (piv txwv li, teeb tsa 260v rau 380V system);
2. Delay coordination: Longer than the automatic power switching time (usually 1-3 seconds);
3. Kev nqis tes ua zoo: Stepwise kev tshem tawm (qhov tseem ceeb los khaws cov khoom lag luam tseem ceeb);
4. Tswb Cov Ntawv Cim: Khw muag khoom siv tau 10 qhov tseeb thiab cov ntaub ntawv povtseg.

Nyob rau hauv ib puag ncig haronic, qhov tseeb davhlau lub teb chaws voltage ntawm lub zog capacitor yuav yog siab dua cov voltage. Yog li ntawd, qhov tseeb tsis tau ntsuas kev ntsuas yuav tsum tau ua es tsis txhob siv hluav taws xob voltage. Kev ua haujlwm tsawg-voltage ntawm lub zog hluav taws xob yog qhov kev tiv thaiv tseem ceeb kom ntseeg tau tias cov cuab yeej muaj kev nyab xeeb. Yog li, nws raug nquahu kom cov neeg siv khoom lag luam ntsuas txhua lub quarter thiab ntsuas ntsuas ntsuas hluav taws xob ib xyoos ib zaug.