EPR Vishay ESTA High Voltage DC Capacitors RIPPLE % RIPPLE The sum of the peak ripple voltage and the DC voltage should not exceed the rated voltage. Refer to graph fig. 1 for permissible peak-to-peak ripple voltage as a percentage of rated voltage for various frequencies. 30 20 10 TYPE EPR The EPR range of capacitors are manufactured using a mixed dielectric material that consists of polyester /polypropylene film and capacitor tissue. They are impregnated and filled with a mineral oil. The container is a robust rectangular polypropylene case. The internal construction is designed to prevent movement when the capacitor is subjected to mechanical shock or vibration. An inert welding process ensures hermetic sealing. Standard terminations are M10 threaded inserts which eliminates the necessity for large voltage terminals. The case has an extremely low affinity for moisture and is resistant to virtually all electrical environments. Brackets can be welded on as required. Note • The impregnant used is a non toxic highly purifiedand inhibited mineral oil. APPLICATIONS The EPR range is designed specifically for DC applications such as filters: • Coupling • Rapid discharge 100 1000 10 000 FREQUENCY Hz Fig. 1 POWER FACTOR The power factor is variable, and is a function of temperature and frequency see fig. 2. Nominal value < 0.5 % at 20 °C at 20 °C 2% Power Factor vs. Temperature 1 kHz 1% 50 Hz 0% - 20 0 40 65 80 Fig. 2 DIELECTRIC RESISTANCE (Parallel resistance) is indicated by the graph of insulance (MΩ x μF) vs temperature fig. 3. The insulance (MΩ x μF) is nominally 10 000 s at + 20 °C. (Measurements taken after 1 minute with an applied voltage of 500 V) MΩ x MF • By-pass 0 10 • Pulse forming networks 105 104 103 • Radar 102 • Laser Insulance vs. Temperature Typical Values - 40 0 40 80 Fig. 3 • X-ray equipment LIFE EXPECTANCY Temperature range is - 40 °C to + 85 °C. Derating is required for operation at higher temperatures. TEMPERATURE COEFFICIENT Capacitance will increase by 2 % per 100 °C temperature rise. EPR type capacitors are designed for a life exceptancy of 50 000 h at 65 °C. To achieve the same life expectancy at 85 °C derate to 60 % of rated voltage fig. 4. Hours TEMPERATURE RANGE 105 104 103 CAPACITANCE RANGE 0.002 μF to 2 μF. The tolerance is ± 10 %. Other tolerance are available on request. Normal values measured at 1 kHz. 102 50 100 150 °C Rated Voltage Fig. 4 Document Number: 13016 Revision: 11-Aug-10 For technical questions, contact: [email protected] www.vishay.com 1 EPR High Voltage DC Capacitors Vishay ESTA VOLTAGE RANGE TYPE DESCRIPTION 1000 VDC to 300 000 VDC PART NUMBER TEST VOLTAGE 15 kVDC EPR150-104 30 kVDC EPR300-504 50 kVDC EPR500-103 Terminal/terminal (Vt/t) For DC rating < 20 kV Vt/t = 2.0 x rated voltage 60 s For DC rating > 20 kV Vt/t = 1.5 x rated voltage 60 s DIMENSIONS in millimeters A 6 C www.vishay.com 2 B CAP. μF A B C 0.1 75 75 142 0.5 130 220 185 0.01 70 90 245 0.5 175 235 280 0.05 80 110 365 0.1 115 130 365 0.25 175 190 365 0.025 80 90 420 EPR1000-403 0.04 120 200 285 EPR1000-104 200 kVDC EPR2000-502 300 kVDC EPR3000-252 0.1 125 175 445 0.005 90 90 385 0.0025 70 95 555 EPR500-504 75 kVDC EPR750-503 EPR750-104 EPR750-254 100 kVDC EPR1000-253 For technical questions, contact: [email protected] Document Number: 13016 Revision: 11-Aug-10 Legal Disclaimer Notice Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 11-Mar-11 www.vishay.com 1