2 . the output frequency and output voltage of this device are very stable and they can be adjusted continuously 装置的输出频率、电压稳定且连续可调，适用大多数电力设备的交流耐压试验。
This device realizes series resonance between high voltage inductance and tested capacitance . because of series resonance a higher voltage exists on the tested capacitance than the power ' s output . so a new ac high voltage test way to large capacity sample comes true 该装置以调频的方式实现高压电感和被试品电容的串联谐振，从而在被试品上得到高于电源输出端的电压，即实现了以小容量电源对大容量试晶进行交流耐压试验的一种新方法。
This paper introduce , now in electrical system , the high - voltage tests include part - charge test for transformer , ac withstand voltage test for transformer , ac withstand voltage test for switch , ac withstand voltage test for hv cable , when the tests is on , the power sup - - ply will be too poor 文中就当前电力系统中的一些现场高压测试所面临的试验电源问题，这些试验包括变压器的局部放电和交流耐压试验、高压开关、高压交联电缆、 gis等的交流耐压试验，提出采用新型变频电源对高压设备进行测试。
