Zhejiang Tenglong Electrical Apparatus Co., Ltd. which was founded in 1978 is located on Sanmen bay of East China Sea. It is one of the earliest Companies in designing and manufacturing tap-changers for transformers. With the abundant experience in design and manufacture of transformer components for years, and the Combinations of High-Scientific theory and Modern design theory in practice, as a result Tenglong has obtained lots of patents for those reasons we have mentioned above. And this is also one of the key reasons why Tenglong has excellent quality products and becomes the main supplier for transformer tap-changers in China. People oriented and honesty is the everlasting motto for all Tenglong People. And Tenglong people are famous for their hard struggle and creative minds, thus enable Zhejiang Tenglong Electrical Apparatus Co. Ltd. to walk on the right track to the sustainable development.
The registered capital
Factory floor area
(1)De-energized pipe-form and drum-form tap-changer (WDG, WDG+WLG, WSG series);(2) De-energized cage-form tap-changer (WSL series);(3) De-energized linearity tap-changer (WDT and WST series);(4) De-energized tray-form tap-changer (WDP and WSP series)
Oil-immersed load switch (LBS)
Its rated voltage is 35kV(highest voltage for equipment 40.5 kV) and below, rated current 630A and 315A,equipped with manual，manual and electric operation combination structure, with two and four transform work positions, respectively used for the terminal type and ring type combination transformer，photovoltaic and wind power project transformer.
(1)SV series on-load tap-changer； (2)F series compound on-load tap-changer；(3)On-load tap-changer for capacity and voltage regulation；(5)Compound vacuum type on-load tap-changer；(6)Horizontal vacuum permanent magnet on-load tap-changer