*mydirectindustry

Catalogs
Iskra d.d.
POWER ELECTRONIC CAPACITORS

POWER ELECTRONIC CAPACITORS

Product catalog summary

Overview: The document provides comprehensive information on power electronic capacitors, focusing on DC link capacitors and snubber capacitors. These components are vital for applications in wind and solar power plants, medical and industrial equipment, and automotive electronics, where they manage high current and harmonic distortion.

Specifications: The capacitors are designed for use in frequency or voltage inverters, uninterruptible power supplies, and motor drives. Key specifications include rated DC voltage, RMS voltage, AC voltage, ripple voltage, rated capacitance, maximum current, and maximum rate of voltage rise. Additional details cover maximum peak and surge currents, tangent of the loss angle, series resistance, equivalent series resistance (ESR), self-inductance, dissipated power, and thermal resistance.

Applications: These capacitors are used in hybrid vehicles, wind plants, energy generation from sea waves, medical and industrial equipment, car electronics, railways, turbines, frequency inverters, elevators, and welders. They are preferred over electrolytic capacitors in DC-link circuits due to their low ESR, high ripple current handling, low ESL, self-healing properties, and long lifespan.

Design and Features: The capacitors feature an aluminum case filled with epoxy resin for durability and reliability. They offer a capacitance range with a tolerance of ±10% (or ±5% on request), a maximum voltage of 2200 V DC, and a dissipation factor of less than 3 mW/1 kHz. Operating temperatures range from -40°C to 85°C, with a maximum hot spot temperature of 85°C. They are designed to withstand altitudes up to 4000 m and have a lifetime expectancy of 100,000 hours under rated conditions.

Standards and Compliance: The capacitors comply with IEC 61071 and UL 810 standards, ensuring safety and performance.

Conclusion: ISKRA's power electronic capacitors are versatile and reliable components suitable for a wide range of energy sector applications, offering high reliability, low losses, and long service life.

High Power DC Link Capacitors Overview: These capacitors are suitable for switching mode power supplies (SMPS), wind and solar power plants, motor drives, induction heaters, frequency inverters, and uninterruptible power supplies (UPS), designed for harsh environments.

Features: They offer self-healing properties, high ripple current capability, high reliability, and very low losses.

Specifications: Capacitance ranges from 0.22 mF to 100 mF with tolerances of ±5% or ±10%. Rated voltage spans 250 V DC to 875 V DC, with a test voltage of 1.5xU for 10 seconds. Self-inductance is less than 1 nH per mm of pitch, and insulation resistance is RxC ≥ 30,000 s. Operating temperatures range from -40°C to +110°C, with a life expectancy of ≥ 100,000 hours at 70°C.

General Characteristics: Used as snubber and DC link capacitors, characterized by dimensions and electrical properties such as ESR and maximum R.M.S. current at 10 kHz.

Notes: Capacitance values are measured at 1 kHz, with intermediate values available on request. Maximum tan(δ) values are measured at 1 kHz, and typical ESR is measured at 10 kHz.

Construction: Includes metallized polypropylene dielectric, non-inductive winding, polyurethane resin filling, and PBT case construction with flat copper terminals.

Applications: Suitable for energy conversion, AC motor drives, hybrid/electric vehicles, inverter modules, and UPS systems.

Features: High density and reliability, low ESR and ESL, self-healing properties, and high insulation resistance.

Cautions and Warnings: Avoid exceeding rated DC voltage or operating temperature, mechanical stresses, and vibrations. Ensure proper mounting and avoid overloading.

Standards: Complies with IEC 61071 standards.

General Overview: Provides specifications, safety instructions, and application guidelines for AC/DC general-purpose capacitors, specifically the KNI5048 type.

Specifications: Designed for various voltage ratings, suitable for welding equipment, UPS systems, solar power plants, frequency inverters, and wind plants.

Safety and Handling Instructions: Emphasizes adherence to electrical and thermal specifications, proper grounding, and mechanical protection.

Installation and Mounting: Capacitors can be mounted in any position but must avoid mechanical damage. Specific torque values for screw connections are provided.

Environmental and Storage Conditions: Avoid corrosive atmospheres and ensure regular maintenance in dusty environments. Maximum storage temperature is 85°C.

Lifetime Expectancy: Includes expected lifetime curves based on hot spot temperatures and voltage ratios.

Applications: Suitable for power converters, switching mode power supplies, motor drives, induction heaters, and UPS systems.

Overview: Provides technical specifications and guidelines for snubber capacitors, DC link capacitors, and AC filtering capacitors, specifically types KNB1910 and KNB1914.

Specifications: Capacitance values measured at 1 kHz, with maximum tan(δ) values and typical ESR at 10 kHz provided.

Dimensions: Specific dimensions with tolerances for length, width, and height, including terminal dimensions.

Mechanical and Environmental Considerations: Designed for PC board mounting, avoiding vibrations and high electric energy impulses.

Applications: Suitable for wind plants, welding equipment, UPS systems, hybrid vehicles, solar power plants, and frequency inverters.

Construction: Includes polypropylene film dielectric, metal-sprayed contact layers, and a metallized layer.

Warnings: Avoid exceeding rated DC voltage with peak AC voltage and consider material flammability when overloading capacitors.

Contact Information: Published by Iskra, d.d., with contact details for various locations.

Catalog excerpts

ENERGY SECTOR POWER ELECTRONIC CAPACITORS • DC LINK CAPACITORS & SNUBBER CAPACITORS -RELEVANT FOR WIND PLANTS, SOLAR POWER PLANTS, MEDICAL AND INDUSTRIAL EQUIPMENT, CAR ELECTRONICS • AC/DC GENERAL PURPOSE CAPACITORS -RELEVANT FOR POWER ELECTRONIC APPLICATIONS WITH HIGH CURRENT AND HARMONICS DISTORTION WITH LONG LIFE EXPECTANCY

Open the catalog to page 1

ISKRA MANUFACTURES AND SUPPLIES A WIDE RANGE OF POWER ELECTRONIC CAPACITORS WHICH CAN BE USED FOR VARIOUS FUNCTIONS IN ELECTRIC CIRCUITS. THEY ARE MOST COMMONLY USED IN FREQUENCY OR VOLTAGE INVERTERS, UNINTERRUPTIBLE POWER SUPPLIES, MOTOR DRIVES, WELDING EQUIPMENT, WIND AND SOLAR POWER SYSTEMS. A TYPICAL SWITCHING-MODE POWER SUPPLY IS SHOWN IN THE FIGURE BELOW. DC LINK CAPACITORS AT POSITION C1 ARE USED FOR DC VOLTAGE SMOOTHING. CAPACITORS AT POSITION C2 ARE SNUBBER CAPACITORS. WHEN A SWITCH OPENS, THEY ELIMINATE VOLTAGE SPIKES CAUSED BY CIRCUIT INDUCTANCE. AC FILTERING CAPACITORS AT POSITION...

Open the catalog to page 2

• CN- RATED CAPACITANCE NOMINAL VALUE OF CAPACITANCE MEASURED AT 20 °C. • UNDC - RATED DC VOLTAGE MAXIMUM OPERATING PEAK VOLTAGE OF EITHER POLARITY BUT OF A NON-REVERSING TYPE WAVEFORM FOR WHICH THE CAPACITOR HAS BEEN DESIGNED. • Urms - RATED RMS VOLTAGE ROOT MEAN SQUARE OF MAX. PERMISSIBLE VALUE OF SINUSOIDAL AC VOLTAGE IN CONTINUOUS OPERATION. • UN - RATED AC VOLTAGE MAXIMUM OPERATING PEAK RECURRENT VOLTAGE OF EITHER POLARITY OF A REVERSING TYPE WAVEFORM FOR WHICH THE CAPACITOR HAS BEEN DESIGNED. • Ur- RIPPLE VOLTAGE PEAK-TO-PEAK ALTERNATING COMPONENT OF THE UNIDIRECTIONAL VOLTAGE. • Imax -...

Open the catalog to page 3

APPLICATIONS • HYBRID VEHICLES • WIND PLANTS • ELECTRIC ENERGY GENERATION FROM SEA WAVES • MEDICAL EQUIPMENT • INDUSTRIAL EQUIPMENT • CAR ELECTRONICS • RAILWAYS AND TURBINES (GENERATOR) • FREQUENCY INVERTERS • ELEVATORS • WELDERS REFERENCE STANDARDS • IEC61071 • UL 810 (CONSTRUCTION ONLY) FILE No.: E196169 CAPACITANCE RANGE CAPACITANCE TOLERANCE VOLTAGE RANGE DISSIPATION FACTOR TAN(A0) SERIES RESISTANCE DIELECTRIC TEMPERATURE COEFFICIENT OPERATING TEMPERATURE INDUCTANCE TEST VOLTAGE CASING MATERIAL CAP FILLING TERMINALS TORQUE OF TERMINALS BASE STUD MAX. ALTITUDE MAX. HOT SPOT TEMPERATURE 85...

Open the catalog to page 4

GENERAL CHARACTERISTICS CAPACITANCE RANGE

Open the catalog to page 5

APPLICATIONS • SWITCHING MODE POWER SUPPLIES (SMPS) • WIND PLANTS • SOLAR POWER PLANTS • MOTOR DRIVES • INDUCTION HEATERS • FREQUENCY INVERTERS • UNINTERRUPTIBLE POWER SUPPLIES (UPS) • FOR HARSH ENVIRONMENT • SELF-HEALING PROPERTIES • HIGH RIPPLE CURRENT • HIGH RELIABILITY • VERY LOW LOSSES SPECIFICATIONS • RATED CAPACITANCE • CAPACITANCE TOLERANCE • RATED VOLTAGE UNDC • TEST VOLTAGE • SELF-INDUCTANCE • INSULATION RESISTANCE BETWEEN TERMINALS • OPERATING TEMPERATURE RANGE • CLIMATIC CATEGORY • LIFE EXPECTANCY TERMINAL TO TERMINAL = 1.5xUNDC, 10 s < 1nH PER mm OF PITCH RxC > 30 000 s AFTER 1 min AT...

Open the catalog to page 7

GENERAL CHARACTERISTICS CAPACITANCE RANGE (1) CAPACITANCE VALUE MEASURED AT 1 kHz. INTERMEDIATE CAPACITANCE VALUES AVAILABLE ON REQUEST. (3) MAXIMUM tan(5) VALUES MEASURED AT 1 kHz. (4) TYPICAL EQUIVALENT SERIES RESISTANCE AT 10 kHz.

Open the catalog to page 8

Open the catalog to page 9

Open the catalog to page 10

GENERAL CHARACTERISTICS CAPACITANCE RANGE NOTES: (1) CAPACITANCE VALUE MEASURED AT 1 kHz. INTERMEDIATE CAPACITANCE VALUES AVAILABLE ON REQUEST. (2) NOMINAL DIMENSIONS. (3) MAXIMUM tan(5) VALUES MEASURED AT 1 kHz. (4) TYPICAL EQUIVALENT SERIES RESISTANCE AT 10 kHz. (5) MAXIMUM R.M.S. CURRENT AT 10 kHz, 0,mb = 70°C FOR A9ase< 20°C.

Open the catalog to page 11

GENERAL CHARACTERISTICS CAPACITANCE RANGE NOTES: (1) CAPACITANCE VALUE MEASURED AT 1 kHz. INTERMEDIATE CAPACITANCE VALUES AVAILABLE ON REQUEST. (2) NOMINAL DIMENSIONS. (3) MAXIMUM tan(5) VALUES MEASURED AT 1 kHz (4) TYPICAL EQUIVALENT SERIES RESISTANCE AT 10 kHz. (5) MAXIMUM R.M.S. CURRENT AT 10 kHz, 0,mb = 70°C FOR A9ase< 20°C.

Open the catalog to page 12

GENERAL CHARACTERISTICS CAPACITANCE RANGE NOTES: (1) CAPACITANCE VALUE MEASURED AT 1 kHz. INTERMEDIATE CAPACITANCE VALUES AVAILABLE ON REQUEST. (2) NOMINAL DIMENSIONS. (3) MAXIMUM tan(5) VALUES MEASRED AT 1kHz. (4) TYPICAL EQUIVALENT SERIES RESISTANCE AT 10 kHz. (5) MAXIMUM R.M.S. CURRENT AT 10 kHz, 0,mb = 70°C FOR A9ase< 20°C.

Open the catalog to page 13

DIMENSIONS TERMINAL DIMENSIONS CONSTRUCTION • DIELECTRIC: POLYPROPYLENE FILM • CAPACITOR ELECTRODES: VACUUM-DEPOSITED • CASING: PLASTIC CASE WITH FLAME-RETARDANT EPOXY RESIN SEALING (UL 94 V-0) • TERMINAL: PARALLEL TINNED COPPER (2 OR 4 PINS) INTERNAL CONSTRUCTION FIRST CONTACT LAYER

Open the catalog to page 14

APPLICATIONS • HYBRID VEHICLES • WIND PLANTS • SOLAR POWER PLANTS • ELECTRIC ENERGY GENERATION FROM SEA WAVES • MEDICAL EQUIPMENT • INDUSTRIAL EQUIPMENT • CAR ELECTRONICS • RAILWAYS AND TURBINES (GENERATOR) • FREQUENCY INVERTERS • DC FILTERING APPLICATIONS • HIGH CAPACITANCE • SELF-HEALING PROPERTIES • HIGH RELIABILITY • LOW LOSSES • LOW DISSIPATION FACTOROF DIELECTRIC 0.1 mF UP TO 480 mF ± 5 %, ± 10 % 450 V DC, 700 V DC, 800 V DC, 900 V DC, 1100 V DC, 1300 V DC TERMINAL TO TERMINAL = 1.5xUNDC, 10 s < 1nH PER mm OF PITCH RxC > 30 000 s AFTER 1 min AT 100 V FOR UNDC < 500 V DC AT 500 V FOR UNDC...

Open the catalog to page 15

GENERAL CHARACTERISTICS CAPACITANCE RANGE (1) CAPACITANCE VALUE MEASURED AT 1 kHz. INTERMEDIATE CAPACITANCE VALUES AVAILABLE ON REQUEST. (4) TYPICAL EQUIVALENT SERIES RESISTANCE AT 10 kHz.

Open the catalog to page 16

GENERAL CHARACTERISTICS CAPACITANCE RANGE (1) CAPACITANCE VALUE MEASURED AT 1 kHz. INTERMEDIATE CAPACITANCE VALUES AVAILABLE ON REQUEST. (4) TYPICAL EQUIVALENT SERIES RESISTANCE AT 10 kHz.

Open the catalog to page 17

POWER ELECTRONIC CAPACITORS

POWER ELECTRONIC CAPACITORS

Catalog excerpts

All Iskra d.d. catalogs and technical brochures

Archived catalogs