FSM26C0426K

Medium Power Film Capacitors FSM (FSN RoHS Compliant) New Design can use FFV Range APPLICATIONS Recovery capacitor for G.T.O. switching (secondary snubber or clamp capacitor). High current DC filtering. FEATURES PACKAGING MATERIAL Metallized polypropylene dielectric specially Self-extinguishing rectangular plastic case (in treated to withstand high DC voltage stresses accordance with UL 94 VO) (12 kV/50 Hz iso- up to 85C. lation). Controlled self-healing. Filled with thermosetting resin. Internal geometry and connections specially M8 outputs. developed for high currents (Irms up to 100 A). Fixing in two planes. No liquid impregnant. Vibrations and shocks resistant to IEC 60077. Special metallization for DC voltage and high Average weight 0.95 kg. currents. DIMENSIONS ELECTRICAL CHARACTERISTICS Climatic category 40/085/56 Working temperature -40C to +85C (according to the power to be dissipated) Capacitance range C 20F to 54F n Tolerance on C 10% n Rated DC voltage V dc 750 to 1350 V n Allowable overvoltages V =1.1 V dc 1/3 of the time s n 1.3 V dc 1 min./day n 2 V dc 100 ms/day for n V dc = 1150 V n 1.75 V dc 100 ms/day for n V dc = 1350 V n DC test voltage between 10s at 20C 15C terminals V dc 1.5 V dc (IEC 61071) e n RMS current Irms max. = 65 to 105 A 2 2 Impulse current I .t max. = 100 to 270 A s Tangent of loss angle Tg : see table of values Series inductance L 25 nH s Thermal resistance Rth ambient/hot spot = 9.2C/W MARKING Rth case/hot spot = 3.3C/W Logo TPC Dielectric Polypropylene FSM Capacitance and tolerance in clear Nominal voltage in clear RMS current in clear Date of manufacture (IEC coding) HOW TO ORDER FSM 2 6 A 0546 K Series Case Size Dielectric Voltage Capacitance Capacitance Terminal Code FSM = Standard 2 = Standard 6 = Polypropylene Code Code Tolerances = Standard FSN = RoHS Compliant A = 750Vdc 0 + pF code K = 10% (Male Threaded) C = 900Vdc 0546 = 54F L = 1000Vdc 0336 = 33F U = 1150Vdc 0206 = 20F V = 1350Vdc etc. 25 DC FILTERINGDC FILTERING Medium Power Film Capacitors FSM (FSN RoHS Compliant) New Design can use FFV Range 1) RECOVERY OF G.T.O. SWITCHING ENERGY Typical application Temperature measuring point* Choice of voltage: Measurement of the case temperature ( B) together V V dc 1 n with the losses gives the temperature of the hot spot. Repetitive surge: = (RthB x P) + B 85C 1.1 V dc 1/3 of the time n *Important for series/parallel operations. Non-repetitive surge: Important 1.3 V dc 1 min./day n Occasional max. surge: Due to the modular nature of this capacitors series 2 V dc 100 ms/day for V dc = 1150 V parallel assemblies can be made to increase the capaci- n n 1.75 V dc 100 ms/day for V dc = 1350 V tance and/or voltage. n n RMS current limits: Ensure that suitable sized connections are used so that The currents given in the tables are maximum. The the capacitors will not be overheated. The inductance thermal limits of the dielectric (85C) must be respected. of the connections must be low enough to ensure equal current sharing of capacitors in parallel. The self-heating can be calculated from the series resis- For series assemblies, connect resistor across each tance, Tg and the thermal resistance given in the table capacitor. Optimal resistance value will be: of values = P x Rth 85C - ambient R 30 M /C in F (1.5 M for C = 20 F). Rth: is given for still air with the capacitor not being subjected to any other heat source. 2) DC FILTERING 2 2 -4 P = (I ) x R + x C (V - V ) x f x 10 rms s 1 2 r 2 Nominal Capacitance RATINGS AND PART NUMBER REFERENCE POLYESTER DIELECTRIC 2 Capacitance V dc Irms max.* (I .t) max. Tg Rs Typical n Part Number 2 -4 (F) (V) (A) (A s) (fkHz) (10)(m ) Weight (g) FSM26A0546K-- 54 750 105 270 2 + 3.4 f 1 9500 FSM26C0446K-- 42 900 100 220 2 + 2.8 f 1.05 9500 FSM26L0336K-- 33 1000 95 170 2 + 2.3 f 1.1 9500 FSM26U0286K-- 28 1150 85 150 2 + 2 f 1.15 9500 FSM26V0206K-- 20 1350 65 100 2 + 1.6 f 1.25 9500 *Function of power dissipation 26