Medium Power Film Capacitors APPLICATIONS Recovery capacitor for G.T.O. switching (secondary snubber or clamp capacitor). High current DC filtering. FEATURES PACKAGING MATERIAL Metallized polypropylene dielectric specially treated to withstand high DC voltage stresses up to 85°C. Controlled self-healing. Internal geometry and connections specially developed for high currents (Irms up to 100 A). No liquid impregnant. Special metallization for DC voltage and high currents. Self-extinguishing rectangular plastic case (in accordance with UL 94 VO) (12 kV/50 Hz isolation). Filled with thermosetting resin. M8 outputs. Fixing in two planes. Vibrations and shocks resistant to IEC 60077. Average weight 0.95 kg. ELECTRICAL CHARACTERISTICS DIMENSIONS Climatic category Working temperature 40/085/56 -40°C to +85°C (according to the power to be dissipated) Capacitance range Cn 20μF to 54μF Tolerance on Cn ±10% Rated DC voltage Vndc 750 to 1350 V Allowable overvoltages Vs = 1.1 Vndc – 1/3 of the time 1.3 Vndc – 1 min./day 2 Vndc – 100 ms/day for Vndc = ≤ 1150 V 1.75 Vndc – 100 ms/day for Vndc = 1350 V DC test voltage between 10s at 20°C ± 15°C terminals Vedc – 1.5 Vndc (IEC 61071) RMS current Irms max. = 65 to 105 A Impulse current I2.t max. = 100 to 270 A2s Tangent of loss angle Tg␦: see table of values Series inductance Ls ≤ 25 nH Thermal resistance Rth ambient/hot spot = 9.2°C/W Rth case/hot spot = 3.3°C/W Dielectric Polypropylene MARKING Logo TPC 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 FSM = Standard FSN = RoHS Compliant Case Size 2 = Standard Dielectric 6 = Polypropylene Voltage Code A = 750Vdc C = 900Vdc L = 1000Vdc U = 1150Vdc V = 1350Vdc Capacitance Code 0 + pF code 0546 = 54μF 0336 = 33μF 0206 = 20μF etc. Capacitance Tolerances K = ±10% Terminal Code – – = Standard (Male Threaded) 25 DC FILTERING FSM (FSN RoHS Compliant) New Design can use FFV Range Medium Power Film Capacitors FSM (FSN RoHS Compliant) New Design can use FFV Range DC FILTERING 1) RECOVERY OF G.T.O. SWITCHING ENERGY Typical application Choice of voltage: V1 ≤ Vndc Repetitive surge: 1.1 Vndc – 1/3 of the time Non-repetitive surge: 1.3 Vndc – 1 min./day Occasional max. surge: 2 Vndc – 100 ms/day for Vndc = ≤ 1150 V 1.75 Vndc – 100 ms/day for Vndc = 1350 V RMS current limits: The currents given in the tables are maximum. The thermal limits of the dielectric (85°C) must be respected. The self-heating can be calculated from the series resistance, Tg␦ and the thermal resistance given in the table of values ΔØ = P x Rth ≤ 85°C -Ø ambient Rth: is given for still air with the capacitor not being subjected to any other heat source. P = (Irms)2 x Rs + π x C (V1 - V2)2 x fr x 10-4 2 Temperature measuring point* Measurement of the case temperature (⍜B) together with the losses gives the temperature of the hot spot. ⍜ = (RthB x P) + ⍜B ≤ 85°C *Important for series/parallel operations. Important Due to the modular nature of this capacitors series parallel assemblies can be made to increase the capacitance and/or voltage. Ensure that suitable sized connections are used so that the capacitors will not be overheated. The inductance of the connections must be low enough to ensure equal current sharing of capacitors in parallel. For series assemblies, connect resistor across each capacitor. Optimal resistance value will be: R # 30 M⍀/C in μF (1.5 M⍀ for C = 20 μF). 2) DC FILTERING Nominal Capacitance RATINGS AND PART NUMBER REFERENCE – POLYESTER DIELECTRIC Part Number FSM26A0546K-FSM26C0446K-FSM26L0336K-FSM26U0286K-FSM26V0206K-- Capacitance (μF) 54 42 33 28 20 *Function of power dissipation 26 Vndc (V) 750 900 1000 1150 1350 Irms max.* (A) 105 100 95 85 65 (I2.t) max. (A2s) 270 220 170 150 100 Tgδ (f➞kHz) (10-4) 2 + 3.4 f 2 + 2.8 f 2 + 2.3 f 2+2f 2 + 1.6 f Rs (m⍀) 1 1.05 1.1 1.15 1.25 Typical Weight (g) 9500 9500 9500 9500 9500