(2)变压器带负载合闸产生的过电压在实际试验中，合空载变压器曾检测到数倍于电源电压的过电压，其物理原理为：空载变压器仍可等值于一个励磁电感与变压器本身的等效电容的并联，如果变压器的中性点不接地，开关又是非周期合闸(一相或两相先合)，由于馈线电容、变压器对地电容、纵向电容与变压器电感产生振荡，结果产生。

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0603CR16-1101-FL，REG1117F-3.3KTTT，LM78L12ACM NOPB，ELG477M450AT6AA，T496D476M016AS，HWS486，LMK61E2EVM，S215ISTRT，T496D475K035AS，SN74CBT3384ADW，ADS7841E，TLV5625ID，MAX6968APE+，T491C685M025AS，MAX6328UR23-T，LMV7272TL/NOPB，TPRC1206JR-076R8L MT9HTF12872FY667G1D6，LM2936HVMA-5.0/NOPB，IRF540，LM237KCSE3，GRM0335C1E1R3BA01D ，T495D227K006ATE045，TLPSGV0E477N4R5-12R，NT5DS32M16CS-5T，CD74HC166M，MC33290DR2G，GRM219R60J106KE19D GRM219R60J106ME19D GRM219R60J106ME19L GRM219R60J106KE19LGRM219R61A106KE19L GRM219R61A106ME19L GRM219R61A106ME19D GRM219R60J106ME19DGRM219R61C106ME19D GRM219R61C106ME19L GRM219R61C106KE19L GRM21BR60J106KE19DGRM21BR60J106ME19D GRM21BR60J106ME19L GRM21BR60J106KE19L GRM21BR61A106KE19LGRM21BR61A106ME19L GRM21BR61A106ME19D GRM21BR60J106ME19D GRM21BR61C106ME19DGRM21BR61C106ME19L GRM21BR61C106KE19L(0805 22UF)GRM219R60J226ME47D GRM219R60J226KE19D GRM219R60J226ME19D GRM219R61A226MEGRM219R61C226ME GRM21BR60J226ME39L GRM21BR60J226KE19L GRM21BR60J226ME19LGRM21BR61A226ME19L GRM21BR61A226KE19L GRM21BR61A226ME39L GRM21BR61C226ME39LGRM188R71C104KA01D GRM188B31E105KA75D GRM2165C1H332JA01D GRM21BR61C106KE15L GRM216R71H223KA01D GRM31MF51E105ZA01L GRM31CF51E106ZA01L GRM31CR71E475KA88L GRM32ER71H475KA88L GRM32DR71E475KA61L GRM32ER6176KE15L GRM43E1X3F101JY01L GRM43DR72J104KW01L GRM43DR61E106KA12L GRM21BR61A106KE19L GRM21BR60J106KE19L GRM21BR61C106KE15L GRM155R71E562KA01D GRM155R71H562KA88D GRM1555C1H681JA01D GRM155F51C683ZA01D GRM21BR72E103KW03L GRM155F51E683ZA01D GRM155F51A684ZE01D GRM155R71E822KA01D GRM155R71C823KA88D GRM1885C1H1R5CZ01D GRM1885C1H2R0CZ01D GRM1885C1H3R0BZ01D GRM1885C1H6R8DZ01D GRM1885C1H100RZ01D GRM188R71H103JA01D GRM188F51C104ZA01D GRM188R61A105KA61D GRM188R71C105KA12D GRM188R61C105KA12D GRM1885C1H122JA01D GRM1885C1H151JA01D GRM188R71H152KA01D GRM188R71H153JA01D GRM188R71E153KA01D GRM188R71A154KA01D GRM188F51H223ZA01D GRM188F50J225ZE01D GRM1885C1H240JA01D GRM188R71H271KA01D GRM1885C1H300JA01D GRM1885C1H360JA01D GRM188R71E393KA01D GRM188R71E563KA01D GRM1885C1H680JA01D GRM188R71H681KA01D GRM188R71E683KA01D GRM188R71H683KA93D GRM1885C1H821JA01D GRM2165C1HR20BD01D GRM2165C1H3R0CD01D GRM2165C1H100JZ01D GRM2162C1H101JA01D GRM216B11E103KA01D GRM21BR71A105KA01L GRM216R61E105KA12D GRM219F51C105ZA01D GRM21BF51E105ZA01L GRM219F51H105ZA01D GRM21BF50J106ZE01L GRM21BF51A106ZE15L GRM2165C1H180JZ01D GRM21B5C1H183JA01L GRM2165C1H201JA01D GRM216R71A224KC01D GRM21BR71C225KA12L GRM219R61E225KA12D GRM21BF51C225ZA01L GRM2165C1H301JA01D GRM2165C1H330JZ01D GRM21BR71C334KA01L GRM21BR71E334KA01L GRM219F51C334ZA01D GRM219F51A335ZA01D GRM21BR71E394KA01L GRM219R71E473KA01D GRM216F11H473ZA01D GRM219R7174KA01D GRM21BF5174ZA01L GRM21BF51E474ZA01L GRM219R60J475KE19D GRM21BF51A475ZA01L GRM21BF51E475ZA01L GRM21BR71H563KA01L GRM219R71E683KA01D GRM3195C1H103JA01D GRM31BR72J103KW01L GRM319F51H104ZA01D GRM31MR71E105KA01L GRM31MR71H224KA01L GRM31MR71C225KA35L GRM31MR71E225KA93L GRM31MF51C225ZA01L GRM319F51C225ZA01D GRM31M2C2H270JV01L GRM31MF5175ZA01L GRM31MF51E475ZA01L GNM2145C1H100KD01D GNM2145C1H330KD01D GNM3145C1H221JD01D GNM3145C1H470JD01D GRM0335C1E7R0DD01DGRM21BR72A103JA01L GRM216F51E104ZA01D GRM21BB11H104KA01L GRM216F11E104ZA01DGRM219F51H105ZA01L GRM21BB31A106KE18L GRM219R60J106ME19D GRM2165C1H120JZ01DGRM2165C1H152JA01D GRM2165C1H220JZ01D GRM216R71H223KA01D GRM21BF51C225ZA01LGRM219R61A225KA01D GRM216R71H225ZA01D GRM21BR60J226ME39L GRM216R71H272KA01DGRM219R71H273KA01D GRM2165C1H331JA01D GRM2165C1H332JA01D GRM21BF51E334ZA01LGRM21BF51E335ZA01L GRM219F51A335ZA01D GRM216R71H392KA01D GRM31C5C1H104JA01LGRM31MF51E105ZA01L GRM31MF51E105ZA01L GRM31CF51E106ZA01L GRM319R61C106KE15DGNM314R71H222KD01D GRM31CR61A226KE19L GRM31CR60J226KE19B GRM32DR72E104KW01LGRM32ER61H105KA01K GRM32DR61C106KA01K GRM32DR60J336ME19L GRM32ER71H475KA88LGRM32DR71E475KA61L GRM42-2X7R683K50 GRM43ER71H225KA01LGRM0335C1E1R0CD01D GRM0335C1E330JD01D GRM0335C1E100JD01D GRM1555C1H101J201DGRM0335C1E330JD01D GRM0335C1E220JD01D GRM0335C1E2R7CD01D GRM0335C1ER50CZ01DC1005COG1H0R5C（R50) C1005COG1H040CT(4R0) C1005COG1H070DT(7R0) GRM155R71H102KA01DGRM155R71H103KA88D GRM155R71C104KA88D GRM155R60J105KE19D GRM155R61A105KE15DGRM155R61A105KE15D GRM1555C1H150JZ01D GRM1555C1H160JZ01D GRM1555C1H1R0CZ01DGRM155F51C224ZA01D GRM1555C1H2R2CZ01D GRM1555C1H2R7CZ01D GRM1555C1H8R2CZ01DGRM1555C1H100JZ01D GRM1555C1H330JZ01D GRM1555C1H681JA01D GRM155R71A333KA01D GRM1555C1H3R6CZ01D GRM1555C1H3R9CZ01D GRM1555C1H430JZ01E GRM1555C1H470JZ01DGRM1555C1H4R3CZ01D GRM1555C1H4R7CZ01D GRM1555C1H4R7CZ01D GRM155R61A474KE15DGRM1555C1H5R0CZ01D GRM1555C1H5R6CZ01D GRM1555C1H510JZ01D GRM1555C1H680JZ01D GRM1555C1H6R2DZ01D GRM1555C1HR50CZ01D GRM188R71H102KA01D GRM188R71H103KA01DGRM188R71C104KA01D GRM188R61E105KA12D GRM1885C1H110JA01D GRM188F51A225ZE01DGRM1885C1H361JA01D GRM188R71C393KA01D GRM188F1174ZA01D GRM1885C1H510JA01DGRM1885C1H620JA01D GRM1885C1H910JA01D GRM21BR72A103JA01L GRM21BB11H104KA01LGRM21BR71H104KA01L GRM216F11E104ZA01D GRM216F51E104ZA01D GRM2165C1H120JZ01DGRM2165C1H121JA01D GRM2165C1H152JA01D GRM21BR60J226ME39L GRM216R71H272KA01DGRM219R71H273KA01D GRM2165C1H331JA01D GRM2165C1H332JA01D GRM21BF51E334ZA01LGRM219F51A335ZA01D GRM216R71H392KA01D GRM31C5C1H104JA01L GRM31MF51E105ZA01LGRM31CF51E106ZA01L GRM31CR61A226KE19L GRM32ER61C226KE20L GRM32DR60J336ME19LGRM32ER71H475KA88L GRM32DR71E475KA61L GRM42-2X7R683K50 GRM033R60J104KE19DGRM31BR72J102KW01L GRM219R71H103KA01D GRM1555C1H181JA01D GRM1555C1H201JGRM155R61H511K GRM188R61E105KA12D GRM033R60J104KE19D GRM188R61E105KA12DGRM36COG330J50 GRM155R61A563KA01E GRM1555C1H3R6CZ01D GRM0335C1E100JD01DGRM1555C1H8R2CZ01D GJM0335C1ER75BB01D GRM1555C1H470JZ01D GRM1555C1H101JZ01DGRM31MF51E105ZA01L GRM155R61A105KE15D GRM21BR60J226ME39L GRM216F51E104ZA01DGRM1555C1H680JZ01D GRM188F51A225ZE01D GRM155R60J105KE19D GRM216R71H392KA01D，MAX9013EUA+，UC3875DWP，0805CR21-8R25-FL，CBR04C308B5GAC