947C321K122CDMS

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 160 µF to 730 µF ±10% 800 Vdc, 1000 Vdc, 1200 Vdc –40 ºC to +85 ºC 60 A @ +55 ºC 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 1.67x 1.50x 1.30x 1.10x 1.00x Duration 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 ESR vs Frequency and Temperature 2.5 80 70 85 °C 490 µF 800 V Rated Ripple Current, Still Air, 5 kh Life 45 °C 55 °C 65 °C 75 °C 85 °C 2.0 ESR (m�) 65 °C 45 °C 25 °C Rated Ripple Current (A) 60 50 40 30 20 10 1.5 0 °C –20 °C –40 °C 1.0 100 1000 Frequency (Hz) 10000 100000 0 10 100 1000 Frequency (Hz) 10000 100000 230 µF 1000 V ESR vs Frequency and Temperature 3.0 80 70 230 µF 1000 V Rated Ripple Current, Still Air, 5kh Life 45 °C 55 °C 65 °C 75 °C Rated Ripple Current (A) 2.5 ESR (m�) 60 50 40 30 20 10 0 2.0 85 °C 65 °C 45 °C 25 °C 1.5 85 °C 0 °C –20 °C –40 °C 1.0 100 1000 Frequency (Hz) 10000 100000 10 100 1000 Frequency (Hz) 10000 100000 160 µF 1200 V ESR vs Frequency and Temperature 4.0 3.5 Rated Ripple Current (A) 80 70 60 50 40 30 20 10 0 10 160 µF 1200 V Rated Ripple Current, Still Air, 5kh Life 45 °C 55 °C 65 °C 75 °C 85 °C 3.0 ESR (m�) 2.5 2.0 1.5 1.0 100 85 °C 65 °C 45 °C 25 °C 0 °C –20 °C –40 °C 1000 Frequency (Hz) 10000 100000 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