A　new　type　of　current　transducer,　film　vibration　current　transducer　(FVCT)　is　presented.　The　FVCT　is　based　on　Newton　force　of　permanent　magnet　to　act　on　current.　A　shunt　coil　is　connected　to　main　line　and　embedded　in　a　piece　of　high　polymer　film　so　that　the　Newton　force　will　act　on　current　flowing　in　the　coil　and　therefore　drive　the　film　to　vibrate.　The　magnitude　of　vibration　is　a　linear　function　of　current.　A　non-contact　vibration　sensor　is　employed　to　sense　the　vibration　in　which　two　groups　of　optical　fibers　bundled　together　to　transmit　light　with　one　group　to　the　film　from　ground　to　high　potential　and　receive　light　reflected　and　transmit　it　to　ground　as　well　with　the　other.　The　intensity　of　reflective　light　is　modulated　by　current　and　converted　to　electric　signal　on　ground.　Meanwhile　high　potential　in　the　FVCT　is　isolated　to　ground　completely　by　the　optical　fibers.　The　FVCT　has　no　power　supply　required　in　high　potential,　better　than　0.5%　accuracy,　no　transient　response　delay,　capable　of　both　AC　and　DC　current　sensing　and　no　limit　of　how　high　of　potential　to　be　in　use.　A　prototype　has　been　built　up　for　a　purpose　of　FVCT＇s　principle　verification　and　0.5%　accuracy　achieved.　©　2009　State　Grid　Electric　Power　Research　Institute　Press.