The world’s first dry air-core re了房actor inter-turn insul舞聽ation defect detector wa了個s ex-works
1,350 kW variable-frequency pow年歌er supply consisting of three paral新校lel-connected units was 話日ex-works
1,200 kV variable-frequency series re農了sonant test system was ex-舊呢works.
The first same frequenc頻通y and phase high voltag做兵e test system for pow拿人er equipment such as GIS successfu體請lly passed the field test
250 kV/30 A high voltage reactor wa學行s ex-works
The PD free variable-frequency pow那討er supply device was succes員分sfully applied in the partial di化師scharge test for the first con刀近verter transformer
The first 1,200 kV positiv化上e and negative polarity D討歌C generator at high altitudes succe雜黃ssfully passed the field test
The PD free variable-f到技requency power supply device件熱 was successfully appli討銀ed the partial discharge test for the f兵道irst 1,000 kV UHV tra些事nsformer
The first three-phase PD free vari場民able-frequency power 理門supply was ex-works
900 kW variable-frequency po刀低wer supply consisting of two pa麗科rallel-connected units was ex-works內日
The PD free variable-frequency power s廠玩upply device was successfully app議黑lied in the partial discha快窗rge test for the first 750 放樹kV transformer
Introduced optical fiber rem嗎是ote control into variable-frequenc司大y power supply devices
Supplied series resonant devices 湖為employing pulse-width modulate鐵好d variable-frequency power supp市行ly
The PD free variable-fre票日quency power supply device was awarded 中房utility model patent
Developed the first push-pull amplified老金 PD free variable-frequency power supp章費ly
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