A reflective deformed helix ferroelectric liquid crystal（R-DHFLC）based optical voltage transformer withadvantages such as compact structure

low cost

fast response

high temperature and anti-vibration performances isdeveloped combined with the mature partial pressure technology and electro-optic effect of ferroelectric liquid crystalmaterials. The voltage measurement mechanism of deformed helix ferroelectric liquid crystal（DHFLC）is analyzed

the structure of R-DHFLC is introduced

the overall structure and design method of the voltage transformer are pre-sented

and the accuracy test is finished. The results show that the R-DHFLC has the order of microsecond step re-sponse speed

good linearity in the input voltage range o

f -0.5

-

0.5 V

the prototype can meet the accuracy level of 0.2/3P for the 110 kV voltage level transformer

and the ferroelectric liquid crystal materials can be used in the fieldof high voltage sensing.