Medium Power Film Capacitors

Transcription

1 The FFLI series is specifically designed for DC filtering applications such as DC link. This range offers solutions for voltage from 800V up to 400V. The Controlled Self Healing Technology, essential to ensure a safe and reliable behaviour, is achieved using a fully dry solution with polypropylene metallized and segmented film. Standard designs proposed in this catalogue are covering a wide range of voltage and capacitance values. In case of specific requirements about shape and performances, please feel free to contact your local AVX representative. PACKAGING MATERIAL Aluminium cylindrical case filled polyurethane resin. Self extinguishing polyurethane resin (V0 : in accordance with UL94; M2F: in accordance with NF F 6-0) Self extinguishing plastic cover (V0 : in accordance with UL94) RoHS components M6/0 Female connections or M8/20 Male connections STANDARDS IEC 607: Power electronic capacitors IEC 688: Railway applications, rolling stock equipment, capacitors for power electronics IEC : al testing IEC 6373: Shock and vibrations UL 94: Fire requirements HOW TO ORDER FFLI 6 L 0337 K Series Dielectric 6 = Polypropylene Voltage Code B = 800V L = 000V U = 50V Q = 400V EIA Code Tolerances K = ±0% Terminal Code = Male Threaded JE = Female Threaded DEFINITIONS C n (μf) capacitance nominal value of the capacitance measured at θ amb = 25 ± 0 C maximum operating peak voltage of either polarity (non-reversing U n (V) rated DC voltage type waveform), for which the capacitor has been designed for continuous operation U w (V) working voltage value of the maximum operating recurrent voltage for a given hot spot temperature and an expected lifetime U r (V) ripple voltage peak-to-peak alternating component of the unidirectional voltage L s (nh) parasitic inductance capacitor series self-inductance R s (mω) series resistance capacitor series resistance due to galvanic circuit I rms (A) RMS current RMS current value for continuous operation under natural convection generating 40 C overheating temperature of the cooling air measured at the hottest position of the capacitor, under steady-state conditions, midway between θ amb ( C) cooling air temperature two units NOTE If only one unit is involved, it is the temperature measured at a point approximately 0. m away from the capacitor container and at two-thirds of the height from its base highest temperature obtained inside the case of the capacitor in θ HS ( C) I²t (A²s) hot spot temperature integral of action thermal equilibrium maximum repetitive integral of action that galvanic circuit is able to withstand CHARACTERISTICS range C n 05μF to 3000μF Tolerance on C n ±0% Rated DC voltage U n 800 to 400V Lifetime at U n and 65 C hot-spot temperature 00,000h and ΔC / C < 2% Parasitic inductance L s 35 to 60nH Maximum rms current I rms up to 2A rms Test voltage between 25 C.5 x U n for 0s Test voltage between terminals 4kV 50Hz and 25 C for 0s Dielectric polypropylene Climatic Category 40 / 95 / 56 (IEC 60068) -40 C / +95 C Working temperature (according to the power dissipated) Storage temperature -40 C / +85 C Calorific value 40 MJ/kg 30 JUNE 205

2 LIFETIME EXPECTANCY VS HOT SPOT TEMPERATURE AND VOLTAGE θ HS = 55ºC θ HS = 65ºC θ HS = 75ºC Uw/Un. θ HS = 85ºC θ HS = 95ºC ,000 0,000 00,000,000,000 Lifetime Expectancy (hours) HOW TO CHOSE THE RIGHT CAPACITOR The capacitor lifetime depends on the working voltage and the hot spot temperature. Our caps are designed to meet hours lifetime at rated voltage and 65 C hot spot temperature. In accordance with operating conditions, please calculate the hot spot temperature and deduce from this calculation if the obtained lifetime can suit the application.. From the tables, select a capacitor with required capacitance C n and voltage U n. Calculate the maximum ripple voltage allowed for the selected cap: U rmax = 0.2U n If U r >U rmax, select a capacitor with higher rated voltage Make sure I rms application < I rms table U n U w Voltage /f U r Copy out: serial resistance (R s ): see table of values thermal resistances R th Time 2. Hot spot temperature calculation Total losses are calculated as follow: P t =P j +P d Joule losses: P j = R s x I rms² Dielectric losses: P d = Q x tgδ0 with R th Q(reactive power) = I rms2 for a sinusoidal waveform C HS AMB tgδ0 = 2 x 0-4 (dielectric losses of polypropylene) Hot spot temperature will be: HS = amb + (P j + P d ) x R th HS absolute maximum is 95 C If temperature is higher than 95 C, come back to # and start again with another selection. R th : thermal resistance between case and ambient air JUNE 205 3

3 3. Refer to the curve and deduce the lifetime vs U w /U n ratio Uw/Un θ HS = 65ºC eg: rated voltage 000V working voltage 050V ρ =.05 lifetime 50, C hot spot temperature Please, find a calculation form at the end of the catalog ,000 0,000 50,000 Lifetime Expectancy (hours),000,000 MTBF CALCULATION Based on Return Of Experience from the field of more than 30 years, we have established the following relation. The failure rate λ B depends on hot spot temperature θ HS and charge ratio ρ. ρ = U w /U n ( ( ) ) in failures/hour GENERAL FAILURE RATE λ=λ B x π Q x π B x π E failures/hour π Q, π B and π E see following tables Qualification Qualification factor πq Product qualified on IEC607 and internal qualification Product qualified on IEC607 2 Product answering on another norm 5 Product without qualification 5 factor πe On ground (good conditions) On ground (fixed materials) 2 On ground (on board) 4 On ship 9 On plane 5 factor πb Favorable Unfavourable 5 MEAN TIME BETWEEN FAILURE (MTBF) MTBF = /λ hours SURVIVAL FUNCTION N = N 0 x exp (-λt) N is the number of pieces still working after t hours. N 0 is the number of pieces at the origin (t = 0) FAILURE MODE Main failure mode due to AVX s Controlled Self-Healing Technology is only losses of capacitance. Thanks to Controlled Self-Healing solution to interrupt self-healing process in order to prevent avalanche effect due to polypropylene molecular cracking producing gas and potential explosion in confined box for none Controlled Self-Healing capacitors. 32 JUNE 205

4 DIMENSIONS FEMALE TERMINALS 5±0.5 A± Hc MALE TERMINALS A± 5± Hc H±2 UL94 V-0 Plastic Cover AVX UL94 V-0 TPC Plastic Cover H±2 AVX TPC Aluminium Case Aluminium Case D±2 M2x6 UL94 V-0 Resin Filling D±2 M2x6 UL94 V-0 Resin Filling M6x0 M8x Dt Dt D (mm) A (mm) Dt (mm) Hc (mm) Max Torque (Nm) M6 4.5 M8 8.5 M2 5 MECHANICAL MOUNTING Distance terminal to terminal Distance terminal to case (mm) (mm) D (mm) creepage clearance creepage clearance Capacitors enclosure presents a M2 x 6 bolt in order to fix the capacitor. Over height (H) more than.5 x D (diameter of tube), we recommend to clamp (constraint < 35daN), just below the plastic cover, the capacitor in order to limit oscillations in case of potential Shock&Vibration stress. JUNE

5 RATINGS AND PART NUMBER REFERENCE Part Number D H I rms I2t Typical L S Typical R S R th Typical (μf) (A) (A 2 s) (nh) (mω) ( C/W) Weight (g) U ndc 800V FFLI6B0297K** FFLI6B0397K** FFLI6B0507K** FFLI6B0687K** FFLI6B087K** FFLI6B007K** FFLI6B207K** FFLI6B357K** FFLI6B607K** FFLI6B907K** FFLI6B2407K** FFLI6B3007K** U ndc 000V FFLI6L097K** FFLI6L0267K** FFLI6L0337K** FFLI6L0457K** FFLI6L0547K** FFLI6L0657K** FFLI6L0787K** FFLI6L0907K** FFLI6L07K** FFLI6L307K** FFLI6L607K** FFLI6L2007K** U ndc 50V FFLI6U057K** FFLI6U0207K** FFLI6U0267K** FFLI6U0357K** FFLI6U0437K** FFLI6U0537K** FFLI6U0637K** FFLI6U0727K** FFLI6U0867K** FFLI6U007K** FFLI6U307K** FFLI6U607K** U ndc 400V FFLI6Q056K** FFLI6Q047K** FFLI6Q856K** FFLI6Q0257K** FFLI6Q0307K** FFLI6Q0367K** FFLI6Q0447K** FFLI6Q0507K** FFLI6Q0607K** FFLI6Q0707K** FFLI6Q0907K** FFLI6Q07K** **Insert - - for male terminals or JE for female terminals 34 JUNE 205

6 CALCULATION FORM SPECIFICATION Working voltage Rms current Frequency Ripple voltage Ambient temperature U w,i rms and θ amb C (μf) U w (V) I rms (Arms) f (Hz) Ur (V) θ amb ( C) hours Your choice PN Rated voltage Serial resistance Thermal resistance between hot spot and case C (μf) U n (V) R s (mω) R th ( C/W) Parasitic inductance L (nh) Cooling conditions CALCULATIONS Maximum ripple voltage U rmax = 0.2 U n U rmax = V The maximum ripple voltage of the selected capacitor must be in any case higher than the ripple voltage of your application Ratio U w /U n ρ = U w /U n ρ = Joule losses P j = R s xi 2 rms P j = W Dielectric losses P d = Qxtgδ0=Qx P d = W Hot spot temperature θ HS = θ amb +(P j +P d )xr th θ HS = C The hot spot temperature must be in any case lower than 85 C LIFETIME EXPECTANCY VS HOT SPOT TEMPERATURE AND VOLTAGE.5.4 θ HS = 55ºC.3 θ HS = 65ºC Uw/Un θ HS = 75ºC θ HS = 85ºC θ HS = 95ºC ,000 0,000 00,000,000,000 Lifetime Expectancy (hours) Expected lifetime at hot spot calculated and U = U w Dimensions millimeters (inches) JUNE