Type 947C High Capacitance, High Current, DC Link Capacitors Metallized Polypropylene Dielectric Type 947C series uses the most advanced metallized film technology for long life, high reliability in DC link applications. Their high-voltage and high-current ratings allow for replacement of series-parallel banks of aluminum electrolytic capacitors in high ripple current applications. Applications Inverters: >5kW Renewable Energy Inverters: Wind, Solar, Fuel Cell Aircraft Inverters: Power Supplies and Motor Drives Transportation: Electric Vehicles, Traction Industrial: Welders, Motor Drives, Elevators, and Overhead Cranes Specifications Capacitance Range: Tolerance: Rated Voltage: Operating Temperature Range With Ripple: Maximum rms Current: Maximum rms Voltage: Test Voltage Between Terminals @ 25 ºC: Test Voltage Between Terminals and Case @ 25 ºC: Life Test: 160 µF to 730 µF ±10% 800 Vdc, 1000 Vdc, 1200 Vdc –40 ºC to +85 ºC 60 A @ +55 ºC <230 Vac 150% rated DC voltage for 10 s 4 kVac @ 50/60 Hz for 1 min 5000 h @ +85 ºC, rated voltage Complies with the EU Directive 2002/95/EC requirement restricting the use of Lead (Pb), Mercury (Hg), Cadmium (Cd), Hexavalent chromium (Cr(VI)), PolyBrominated Biphenyls (PBB) and PolyBrominated Diphenyl Ethers (PBDE). Ratings Rated D Catalog Cap Voltage Dia. H A Rated Current Typical ESR Height Case Area Series Thermal Resistance ΔT = 40 ºC @ 10 kHz Inductance θcc θca Mass Part Number (µF) (Vdc) (mm) (mm) (mm ) (A) (mΩ) (nH) (ºC/W) (ºC/W) (kg) 947C361K801CAMS 360 800 92 97 40100 72 1.3 60 3.0 2.9 0.9 2 947C491K801CBMS 490 800 92 120 46700 70 1.6 75 2.6 2.5 1.0 947C601K801CCMS 600 800 92 145 53700 68 2.0 85 2.2 2.1 1.2 947C731K801CDMS 730 800 92 170 60800 68 2.3 95 1.9 1.9 1.3 947C231K102CAMS 230 1000 92 97 40100 67 1.5 60 3.0 2.9 0.9 947C311K102CBMS 310 1000 92 120 46700 63 2.0 75 2.6 2.5 1.0 947C391K102CCMS 390 1000 92 145 53700 62 2.4 85 2.2 2.1 1.2 947C471K102CDMS 470 1000 92 170 60800 60 2.9 95 1.9 1.9 1.3 947C161K122CAMS 160 1200 92 97 40100 62 1.8 60 3.0 2.9 0.9 947C211K122CBMS 210 1200 92 120 46700 57 2.4 75 2.6 2.5 1.0 947C271K122CCMS 270 1200 92 145 53700 56 2.9 85 2.2 2.1 1.2 947C321K122CDMS 320 1200 92 170 60800 56 3.4 95 1.9 1.9 1.3 1. Rated Current is for temperature rise of +40 ºC at 1–20 kHz. 2. θcc is core-to-case thermal resistance at 0–10 kHz. For higher frequency see Expected Lifetime Predictions. 3. θca is case-to-ambient thermal resistance for still air. For moving air see Expected Lifetime Predictions. CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800 • www.cde.com Type 947C High Capacitance, High Current, DC Link Capacitors Outline Drawings M5 Threaded Insert Terminals M8 Threaded Stud Terminals 3.622" (92.0mm) Max. 3.622" (92.0mm) Max. Max. Torque 2.5 Nm (22 in x lb) Max. Torque 8.5 Nm (75 in x lb) M5 x 4.0mm Min. 2X Ø 0.687" (17.5mm) 0.236" ±0.039" (6.0mm ±1.0mm) 2X Ø 0.813" (20.7mm) 1.772" ±0.039" (45.0mm ±1.0mm) 1.772" ±0.039" (45.0mm ±1.0mm) M8 x 1.25 THD Studs 0.236" ±0.039" (6.0mm ±1.0mm) 0.787" ±0.039" (20.0mm ±1.0mm) CORNELL DUBILIER CORNELL DUBILIER H ± 0.079" (H ± 2.0mm) H ± 0.079" (H ± 2.0mm) 0.630" ±0.039" (16.0mm ±1.0mm) 0.630" ±0.039" (16.0mm ±1.0mm) M12 x 1.75 THD M12 x 1.75 THD Optional Mounting Stud Optional Mounting Stud Part Numbering System 947C 361 K Type Capacitance Tolerance 947C 361 = 360 µF K = ±10 % 731 = 730 µF 801 C Voltage Diameter D A M S Height H Terminal 801 = 800 Vdc C = 92 mm A = 97 mm I = M5 Insert Mounting 102 = 1000 Vdc B = 120 mm Threaded S = M12 Stud 122 = 1200 Vdc C = 145 mm M = M8 Stud Threaded D = 170 mm Threaded blank = no stud CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800 • www.cde.com Type 947C High Capacitance, High Current, DC Link Capacitors Expected Lifetime Predictions To use the Expected Lifetime curves calculate Va ⁄Vr and core temperature T. Start by estimating: Applied dc voltage Va Ripple Current I Ripple Frequency f Ambient Temperature Ta Airflow speed v Units: A=m² T, Ta & Tc=°C C=µF θ, θca & θcc =°C/W ESR=mΩ v=m/s f=kHz Va &Vr=Vdc I=A NOTE: The temperature rise in the 947C is I²(ESR) times the thermal resistance θ. The ESR is mainly the metal resistance; the metal resistance is the 10 kHz ESR. For operation below 10 kHz add the dielectric resistance. It is the dielectric dissipation factor—no more than 0.0002—times the capacitive reactance, i.e., 0.0002 ⁄(2πfC). That’s equal to 31.83 ⁄(fC). 1. Start with the 10 kHz ESR from the Ratings table. If frequency is less than 10 kHz, add 31.83 ⁄(fC). 2. Compute total thermal resistance θ as the sum of core-to-case thermal resistance θcc and case-to-ambient thermal resistance θca. Both are in the Ratings table but θca is for still air and θcc is for 10 kHz or less. For frequency > 10 kHz multiply θcc by [1+(f –10)/100], e.g., for 75 kHz multiply θcc by 1.65. For moving air use the capacitor surface area A and airflow speed v to calculate θca = 1 ⁄[A(5+17(v+0.1)0.66)]. 3. Compute Va ⁄Vr and the core temperature T. T = Ta + I²(ESR)θ 4. Look up estimated lifetime from the Expected Lifetime curves. 5. If you want a longer expected lifetime, choose a capacitor with higher voltage rating or consider using multiple capacitors in parallel to share the ripple current. Permissible Voltage Surge Duty for 100,000 Hour Life Expectancy at 50 ºC Core Temperature Factor Duration 1.67x 1.50x 1.30x 1.10x 1.00x t≤ 100 ms t≤ 5 minutes t≤ 2.5 hours t≤ 9.6 hours balance (11.9 h) Frequency 1x/day 1x/day 1x/day 1x/day 1x/day CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800 • www.cde.com Type 947C High Capacitance, High Current, DC Link Capacitors Typical Performance Curves 490 µF 800 V Rated Ripple Current, Still Air, 5 kh Life 490 µF 800 V ESR vs Frequency and Temperature 2.5 2.0 Rated Ripple Current (A) 85 °C ESR (m�) 65 °C 45 °C 25 °C 0 °C 1.5 –20 °C –40 °C 80 45 °C 70 55 °C 60 65 °C 50 75 °C 40 30 85 °C 20 10 1.0 100 1000 10000 0 100000 10 Frequency (Hz) 230 µF 1000 V ESR vs Frequency and Temperature 1000 Frequency (Hz) Rated Ripple Current (A) ESR (m�) 85 °C 2.0 65 °C 45 °C 25 °C 1.5 1.0 100 0 °C –20 °C –40 °C 100000 45 °C 70 2.5 10000 230 µF 1000 V Rated Ripple Current, Still Air, 5kh Life 80 3.0 100 55 °C 60 65 °C 50 75 °C 40 30 85 °C 20 10 0 1000 10000 10 100000 100 1000 Frequency (Hz) 10000 100000 Frequency (Hz) 160 µF 1200 V ESR vs Frequency and Temperature 160 µF 1200 V Rated Ripple Current, Still Air, 5kh Life 80 4.0 45 °C 55 °C 70 Rated Ripple Current (A) 3.5 ESR (m�) 3.0 2.5 85 °C 2.0 65 °C 45 °C 25 °C 1.5 0 °C –20 °C –40 °C 1.0 100 60 65 °C 50 75 °C 40 30 85 °C 20 10 1000 10000 Frequency (Hz) 100000 0 10 100 1000 Frequency (Hz) 10000 100000 CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800 • www.cde.com