FPX86xxxxxJ Datasheet | Thomson

FPX RANGE Capacitor for Power Electronics Preliminary data sheet .. Preliminary data Applications Protection of thyristors . Protection of gate turn off thyristor (GTO) . Clamping (Secondary snubber) . .. Technology Metallized polypropylene dielectric capacitor with controlled self healing . Reinforced metallisation developed for high impulse currents . Axial connections specially developed to reduce serial inductance and to provide rigid mechanical mounting . Presentation Cylindrical in plastic or epoxy case filled with thermosetting resin . Outputs : threaded inserts M6 or M8 . Electrical characteristics Climatic category : 40/085/56 (IEC 68) . Working Temperature : - 40 to + 85°C . Hot spot temperature 85°C (must be calculated : see page up) . Capacitance range : C = 0.5 µF to 6 µF . Tolerance : ± 5 % . Nominal dc voltage : Undc = 1000 to 3000 V . Peak voltage : Ucr = 1600 to 4000 V . Allowable overvoltage : Us = 2000 to 4600 V 10 s per day . RMS current : Irms max = 15 to 160 A . Impulse current : I2t max = up to 729 A2s . Spikes or peak currents in the capacitors may cause a deterioration of the bonding between the metallisation and connections . These bonds are capable of withstanding only a limited amount of energy for each spike . The table shows the maximum energy permitted in the form (I2.t), where I is in amps, and t is in seconds . The formula (I2.t) replaces d V/dt which is less easy to use as it is not an expression of energy (I = C.d V/dt) . This type of capacitor has been designed to withstand high (I2.t) values . Preliminary data Stray inductance : 5 to 20 n H . Variation of capacitance with temperature : ³C C ± 2 % between - 40 and 85°C . Test voltage between terminals : Us x 10 s 25°C . Withstanding voltage .. between terminals and case : > 4000 Vrms 60 s 50 Hz . Standards IEC 1071-1, IEC 1071-2 : Power electronic capacitors . IEC 68 -1 : Environmental testing . UL 94 : Fire requirements . Hot spot temperature calculation Hot...