CAPACITORS FOR POWER ELECTRONICS

Transcription

1 CAPACITORS FOR POWER ELECTRONICS Positive Development in Power Electronics

2 INDEX Page No: 0. CONTENTS 1 1. INTRODUCTION 2 2. APPLICATION 2 3. DEFINITIONS 3 4. CAPACITOR CONSTRUCTION 5 5. CAPACITOR SAFETY 9 6. MOUNTING AND OPERATING INSTRUCTIONS SELECTION OF AN APPROPRIATE CAPACITOR 13 FOR A GIVEN APPLICATION 8. LIST OF ABBREVIATIONS AC RANGE (Pages 16-24) MPP Design A Damping MPP Design B Damping, Commutation MPP Design C Commutation MPP Design D/E Damping, General Use MPP Design D/E Filtering MKP Design G Filtering, Commutation DC RANGE (Pages 25-35) MKP Design B Smoothing, Filtering MKP Design C Supporting, Smoothing, Filtering MKP Design D/E Smoothing, Filtering MPP Design B Smoothing, Damping MPP Design C Smoothing, Damping MPP General Use SKMP Rectangular Case Filtering, Smoothing 35 Issue 1 : 12/99

3 1. INTRODUCTION Enjoying a reputation as one of the World s leading manufacturers of power semiconductors with its origins in the 1920s, Westcode employs over 300 people in the research, development, manufacture and marketing of silicon power products. These activities are headquartered in Chippenham, UK, with a sales and assembly facility in Long Beach, California, USA. Westcode operations are supported world-wide by a network of sales offices and official distributors. Since becoming an independent company in December 1997, Westcode has expanded its extensive portfolio of power products not only with new semiconductor devices but also with the addition of complementary products such as semiconductor protection fuses and power electronic capacitors. This catalogue details the Westcode range of power electronics capacitors available for both AC and DC applications and a variety of purposes which include filtering, smoothing, supporting, snubbing/clamping, commutation and general use. For information on application specific capacitors, GTO and IGBT snubbers and medium frequency capacitors for induction heating processes, please contact the Westcode Sales Offices, details on the back page of this catalogue. 2. APPLICATION Capacitors for power electronics can be used for a wide variety of applications, even where extremely non-sinusoidal voltages and pulsed currents are present. Capacitors for both AC and DC applications are available, the choice of which will depend upon the voltage characteristics of the circuit. AC capacitors are periodically recharged during operation, DC capacitors are periodically charged and discharged without recharge. Typical voltage characteristics for an AC capacitor application. for a DC capacitor application. 2.1 AC Capacitors Damping (Snubber) Capacitors Usually connected in series with a resistor, these capacitors are designed for the damping of undesirable voltage spikes caused by the so-called carrier storage effect during the switching of power semiconductors. Commutating Capacitors Switched in parallel to a thyristor, these capacitors are designed to quench the conductive state of the thyristor. Since commutating capacitors are periodically and abruptly recharged, the peak current may substantially exceed the rms value. Issue 1 : 12/99

4 2.2 DC Capacitors Smoothing Capacitors Used for the reduction of the AC component of fluctuating DC voltage. Power supply High-voltage testing equipment, DC controllers Measurement and control technology Generation of high DC voltage through cascaded circuits Supporting Capacitors, DC-Filter or Intermediate Circuit Capacitors Used for energy storage in intermediate DC circuits. Must be able to absorb and release very high currents within short periods, the peak value of the current being substantially greater than the rms value. Frequency converters for poly-phase drives Transistor and thyristor converters Surge (Pulse) Discharge Capacitor Capable of supplying or absorbing extreme short-time current surges. Usually operated at low repetition frequencies. Welding applications Laser/Magnet technology Lightning generators 3. DEFINITIONS Rated Voltage The maximum or peak voltage of either polarity of a reversing or non-reversing type wave form for which the capacitor has been designed and rated (unlike other standards for AC capacitors, the rated voltage is not the rms value). Non repetitive peak (surge) voltage Û s Voltages beyond the rated voltage induced by switching or faults of the system or any part of it. Maximum duration: 50 msec Lifetime maximum count: 1000 (under load) Issue 1 : 12/99

5 rms voltage U rms Root mean square of the maximum permissible value of sinusoidal AC voltage in continuous operation. Super-imposed AC voltage Û ac Peak value of the super-imposed AC voltage. The sum of Û dc and the level of the AC voltage which it is imposed on must not exceed the rated voltage of the capacitor. Rated capacitance C R Capacitance value rated at 20 C/50Hz. Rated current I R Rms value of permissible current in continuous operation. The values given in the data sheets are related to the specified ambient temperature and allow for inherent temperature rise of the capacitor due to its internal losses. Maximum peak current Î max Maximum permitted repetitive current amplitude during continuous operation. Rate of voltage rise (du/dt) max Maximum permitted repetitive rate of voltage rise of the operational voltage: î max = C R (du/dt) max Non-repetitive peak current (surge) Î s Maximum current that may occur non-repetitively and briefly in the event of a fault. Maximum duration: 50 msec Maximum count: 1000 (during load) Maximum non-repetitive rate of voltage rise (du/dt) s Peak rate of voltage rise that may non-repetitively and briefly in the event of a fault. Î s = C R (du/dt) s Series resistance R s Resistance of the capacitor which determines its heat dissipation (I rms ² R s ) Dielectric dissipation factor tanδ 0 Constant dissipation factor of the dielectric material for all capacitors in their rated frequency. Power dissipation P vn Maximum permitted power dissipation for the capacitor s operation. Refers to the specified ambient temperature and cooling method. If no cooling method is specified, natural cooling applies. Voltage test between terminals U TT Routine test of all capacitors conducted room temperature (20ºC), prior to delivery. A further test with 80% of the test voltage stated in the data sheet may be carried out once at the user s location. Issue 1 : 12/99

6 Voltage test between terminals and case U TC Routine test of all capacitors between short-circuited terminals and case, conducted at room temperature (20ºC). May be repeated at the user s location. Insulation voltage U i Rms value of the AC voltage for which the terminals to case insulation has been designed and tested. If UR not stated in the data sheets, the insulation voltage is U i =. 2 Ambient temperature T A Measured 10 cm away and at 2/3 of the case height of the capacitor. Lower category temperature T min Lowest permissible ambient temperature at which a capacitor may be used. Upper category temperature T max Highest permissible capacitor temperature, i.e. temperature at the hottest point of the case. 4. CAPACITOR CONSTRUCTION 4.1 Dielectrics MPP-Dielectric The dielectric of MPP-type capacitors takes the form of a low-loss polypropylene film immersed completely in mineral oil. Paper sheets which are metallised on both sides serve as electrodes. MPP-capacitors are dried and impregnated in high vacuum. The vacuum drying and impregnation process frees the dielectric of any air pockets and minimises the occurrence of partial discharges. This results in long life-expectancy, low losses, and extremely stable electrical characteristics. Both ends of the winding are sprayed with a zinc contact layer. This layer forms a stable contact with the paper sheets and guarantees a very high resistance to impulse charges (a characteristic of the MPcapacitor) reducing the self-inductance of the capacitor. The MPP-dielectric is preferred for highly stressed AC capacitors. MKP-Dielectric The MKP-type capacitors consist of a low-loss dielectric formed by pure polypropylene film. A thin self-healing mixture of zinc and aluminium is metallised directly on one side of the PP-foil under vacuum. This technology ensures a long operating life of the capacitor. In some cases additional unmetallised films are added between the metallised ones. The capacitor elements are dried in a vacuum. After insertion into the capacitor case, a patented viscous polyurethane resin, mainly containing castor oil, is introduced. This protects the winding from environmental influence and provides an extended life-expectancy and stable capacitance. DC capacitors with a rated voltage below 1000 V can also be made totally dry, i.e. without any impregnant. MKP-type capacitors have a high specific capacitance and a high AC load capacity. Issue 1 : 12/99

7 SMKP-Dielectric With Inherent Safety Structure The metallised films have a special structure. The layer is divided into a large number of segments, connected with each other by thin gates. In the event of a non-healing breakdown these gates, unable to withstand the rising current passing to the defective segment, vapourise and completely disconnect this sector. There is a slight but unimportant decrease in capacity; the system as a whole continues to function. SMKP-dielectrics with such a safety structure are used particularly in large capacitors with high values of capacitance. MP-Dielectric The dielectric consists of very fine satin paper which is coated on one side with a thin self-healing metal deposit. The system can be provided with an additional nonmetallised paper layer between the metallised paper sheets. The MP-system is dried and impregnated with mineral oil under high vacuum conditions, giving the capacitor a high surge current load capacity, a high specific capacity and a very good self-healing capability. However, because of their high power dissipation factor, MP-dielectrics are used primarily for DC capacitor applications. The paper and/or plastic film is wound into stable cylindrical windings. Contact is made to the ends of the capacitor windings by spraying a metal contact layer, facilitating a high current load and ensuring a lowinductance connection between the terminals and windings. The cases are usually made of pressed aluminium and fitted with a mounting stud. Issue 1 : 12/99

8 4.2 Designs Design A Case diameter: 25mm Soldered brass lid with ceramic termination, hermetically closed live case Termination: tab connector 6.3 x 0.8 mm Humidity class: C Design B Case diameter: mm Flanged steel or brass lid (folded edge), with ceramic lead-through Termination: tab connector 6.3 x 0.8 mm or M5 thread Humidity class: F Design C Case diameter: mm Flanged copper lid (folded edge), with ceramic lead-through Termination: M6... M12 thread Humidity class: C Issue 1 : 12/99

9 Design D Case diameter: mm Flanged plastic lid (folded edge), with rivetted terminations Termination: twin brass tab connector 6.3 x 0.8 mm Humidity class: F Design E Case diameter: mm Flanged plastic lid (folded edge), with rivetted terminations Termination: brass tab connector 6.3 x 0.8 mm Humidity class: F 4.3 Climatic Categories Letter Code Conditions C: Max. relative humidity: 100% 95% Annual mean occasionally 100% occasionally Condensation: Permissible F: Max. relative humidity: 75% Annual mean 95% for 30 days per year Condensation: Not permissible Issue 1 : 12/99

10 5. CAPACITOR SAFETY Protection against Accidental Contact All capacitors manufactured to designs B, C, D, E and G and all capacitors with rectangular cases undergo 100% routine testing (voltage test between terminations and case) in accordance with VDE Accessible capacitors must be earthed at the bottom stud or with an additional earthing clamp. Note that capacitors manufactured to design A have a live case. Protection against Overvoltages and Short Circuits As discussed below, the capacitors are self-healing and regenerate themselves after breakdowns of the dielectric. For voltages within the permitted testing and operating maximum the capacitors are shortcircuit- and overvoltage-proof. Protection against Overload and Failure at the End of Useful Service Life All the dielectric structures described on pages 5 and 6 are "self-healing": In the event of a voltage breakdown the metal layers around the breakdown channel are evaporated by the heat generated in the electric arc that forms between the electrodes. They are removed within a few microseconds and pushed apart by the overpressure generated in the centre of the breakdown spot. An insulation area is formed which is reliably resistive and voltage proof for all operating requirements of the capacitor. The capacitor remains fully functional during and after the localised breakdown. In the event of overvoltage or ageing at the end of the capacitor's useful service life, an increasing number of selfhealing breakdowns may cause rising pressure inside the capacitor. To prevent it from bursting, the capacitor is fitted as standard with a mechanical fuse. This safety mechanism is based on a formed restriction on one of the connecting wires inside the capacitor. With rising pressure the casing begins to expand, mainly by opening the folded crimp and pushing the lid upwards. As a result, the connecting wire separates at the restriction, and the current path is interrupted irreversibly. It has to be noted that this safety system can act properly only within the permitted limits of loads and overloads. Permitted Overvoltages according to IEC x 30 % of the service periods 1.15 x 30 min/day 1.2 x 5 min/day 1.3 x 1 min/day 1.5 x 100 ms/day Issue 1 : 12/99

11 6. MOUNTING AND OPERATING INSTRUCTIONS Connection The capacitors should be connected with sufficiently flexible leads to permit the functioning of the mechanical fuse, and sufficient space for expansion of the capacitor case must be left above the terminations. The folded crimps must not be held by retaining clamps. Depending on the specific dimensions of the capacitors the casing could expand between 5mm and 15mm. Connect the capacitors only with flexible cables, straps or braided straps. Do not hold the folded crimps by retaining clamps. Accommodate a clearance of at least 20mm above the terminations for extension in case of overload. The hermetic sealing of the capacitors is extremely important for a long operating life and for the correct functioning of the mechanical fuse. Special attention must be given not to damage the following critical sealing points: The lid/case interface The interface between screw terminal and lid The rubber seal at the bottom of the tab connectors The soldering at the bottom of the tab connectors The ceramic insulators Capacitors are susceptible to physical damage when subjected to undue force or impact. Observe tightening guidelines and do not strike any part of the capacitor with heavy or sharp tools. Do not expose the internal soldering to excessive heat. It is not recommended to solder cables to the terminals. Use appropriate tab connectors to connect the cables. Do not bend or twist the connecting terminals and the tab connectors. Permitted torque for screw connections: M5: 1.5Nm M10: 7Nm M6: 2.5Nm M12: 10Nm Design C: connection shall be made between two nuts. During connection the lower nut shall be backed up to avoid any transmission of the tightening torque above the above mentioned figures to the ceramic body of the insulator. Maximum current rating per termination contact: Fast-on connector 6.3mm (A,B,E): Double fast-on connector 6.3mm (D): M6 (C): M10 (C): M12 (C): 18A 15A per tab 40A 100A 160A Rectangular capacitors are provided with a special pressure switch to signal any overpressure. The capacitor should be isolated by means of an external safety circuit in this event. Issue 1 : 12/99

12 Mounting Capacitors of a cylindrical design withstand vibration stresses up to 5g. They comply with testing standard FC according to DIN IEC 68 pt.2-6 as follows: Design C and all power capacitors without clamp Design A, B, D, E, all power capacitors and design C with clamp Test duration 30 cycles 30 cycles Frequency range Hz Hz Max. acceleration 10m/s² 50m/s² Max. displacement amplitude mm 0.35 mm Permitted torques at mounting stud: M8: 4Nm M12: 7Nm Mounting Location To avoid overheating the capacitors must be allowed to emit their heat losses unhindered and must be shielded from external heat sources. The permitted temperature category of the capacitor (B, C, or D) is stated on the label. If actual circumstances give cause for doubt, tests should be conducted to ensure that the permitted maximum temperature of the capacitor is not exceeded. It should be noted that the internal heat balance of large capacitors is only reached after a couple of hours. The useful life of a capacitor may be reduced dramatically if exposed to excessive heat. Sufficient clearance between and around the capacitors for natural or forced ventilation (especially in detuned capacitor banks) is recommended. Mounting Position Capacitors in MPP technology and resin-filled MKP capacitors should be installed upright with terminals facing upwards. Gas filled MKP capacitors can be mounted in any position without restrictions. Smoothing capacitors with nominal voltages of more than 4,000V should be mounted upright with terminals facing upwards. Please contact us if different mounting position is required. Earthing Capacitors with a metal case must be earthed at the mounting stud or by means of a separate metal strap or clamp. Discharge If there is no facility for discharge of the capacitors provided by external circuits, the capacitors should be provided with discharge resistors. In any event, the poles of the capacitors must be short-circuited before being touched. Note that capacitors with nominal voltages above 750V in particular may regenerate new voltage at their terminals after having been short-circuited just for short periods. This condition results from the internal series connection of the capacitor elements and can be avoided by storing them permanently short-circuited. Disposal When disposing of or arranging for the disposal of the capacitors it should be noted that MPP capacitors are filled with mineral oil. A data sheet about the impregnant can be provided by the manufacturer. All capacitors manufactured for power electronics applications are totally free of PCB and do not contain toxic substances. MKP capacitors are either filled with viscous PUR resins or with inert insulating gas. Issue 1 : 12/99

13 Operation under Different Cooling Conditions The figures for power dissipation and rated current indicated in the individual data sheets, are related to the specified ambient temperature (typically 60 C), in a naturally-cooled operating environment. Where different ambient temperatures prevail the power dissipation figure given in the data sheet has to be multiplied by the relevant de-rating factor given below: At temperatures which are below the temperature specified in the special data sheet, the capacitors may carry effective currents exceeding the rated current within the following limits: 1. The power dissipation defined by means of the above diagram must not be exceeded. 2. Depending on the termination type, the maximum rms current must not be greater than that outlined on the relevant data sheet. Issue 1 : 12/99

14 7. SELECTION OF AN APPROPRIATE CAPACITOR FOR A GIVEN APPLICATION Typically, the calculation of the characteristics of a capacitor for a specific application would be as follows: A capacitor with a capacity of 33µF is needed for a trapezoidal voltage waveform as below : U V U 2 500V f o 120 Hz τ 100 µs 7.1 Choice of the Rated Voltage The rated voltage of the capacitor must be equal to or larger than the higher one of the two voltages U 1 and U 2, i.e.: U n > 1000V. From the standard product range, a capacitor with a rated voltage of 1100V would be chosen. 7.2 Calculation of the Rate of Voltage Rise du dt U U V = = 1500 V s µ s = 15 / τ 100 µ 7.3Repetitive Peak Current Î = C (du/dt) = 33µF 15 V/µs = 495 A 7.4 Rated (rms) Current Irms = I! 2 τ f 0 = 767. A 7.5 Power Dissipation According to VDE , the power dissipation is determined by the following formula: P V = û² π f 0 C tanδ 0 + I eff ² R s For non-symmetric voltages, û has to be defined as In our example, the power dissipation factor is ( U + 2 ) 1 U 2 P V = P VD + P VR = 1.4 W W = 9.6 W The values tanδ 0 = and Rs = 1.4 mω have been taken from the special data sheet. A comparison with the permitted power dissipation of 14 W indicated in the special data sheet shows that the capacitor may be operated at the envisaged ambient temperature of 60 C. If the calculated power dissipation is too high, the following solutions may be considered: Reduction of the permitted ambient temperature according to the diagram leading to an increase in the permitted power dissipation Connection of a larger number of capacitors with smaller capacitance values (increase of the surface area) Application of capacitors with a rated voltage higher than required by the operating voltage (larger dimensions, greater surface area and power dissipation) Forced cooling Reduction of the series resistance by changes to the capacitors internal construction. Issue 1 : 12/99

15 8. LIST OF ABBREVIATIONS U rms Û max Û S Û ac U i U BB U BG U TC U TT C R W R I R R S P VN P VR L E T A Rated Voltage Root Mean Square value at sinusoidal voltage Repetitive peak voltage Non-repetitive peak voltage Super-imposed AC voltage Insulation voltage Test voltage across terminals Test voltage terminals to case Voltage test between terminals and case Test voltage terminals to case Rated capacitance Rated energy content Rated current Series Resistance Power dissipation Rated loss power Self-inductance Ambient temperature T U Ambient temperature (reference temperature for L R, P VR ) T max T min Î max Î S (du/dt) max (du/dt) s K L G DB KB Upper category temperature Lower category temperature Maximum repetitive peak current Non-repetitive peak current Maximum repetitive rate of voltage rise Maximum non-repetitive rate of voltage rise Creepage distance Clearance Weight in Grams Continuous operation Short-time service Issue 1 : 12/99

16 9. AC RANGE (Pages 16 24) 9.1 MPP Design A Damping 9.2 MPP Design B Damping, Commutation 9.3 MPP Design C Commutation 9.4 MPP Design D/E Damping, General Use 9.5 MPP Design D/E Filtering 9.6 MKP Design G Filtering, Commutation 10. DC RANGE (Pages 25 35) 10.1 MKP Design B Smoothing, Filtering 10.2 MKP Design C Supporting, Smoothing, Filtering 10.3 MKP Design D/E Smoothing, Filtering 10.4 MPP Design B Smoothing, Damping 10.5 MPP Design C Smoothing, Damping 10.6 MPP General Use 10.7 SKMP Rectangular Case Filtering, Smoothing Issue 1 : 12/99

17 9.1 AC Capacitors, MPP, Design A - Damping - according to IEC 1071 / VDE 0560 Part 120/121 General Technical Data Dimensions Tanδ o 2 x10-4 G 1 L 3 Capacitance tolerance ±10% M8 8 Limiting temperatures C Storage temperatures Humidity class Service life Permitted failure rate 3% Terminals C C h Tab connector 6.3mm Live case Part No: Rated Values Limit Values Dimensions G C n I n R s P vn L e T u î max (du/dt) max î s (du/dt) s D 1 L 1 L 2 L K m µf A mω W nh C A V/µs A V/µs mm mm mm mm mm g U rms 660V U i 800V U BB 2010V DC 930V Û MAX 1200V Û s 1500V U BG -V AC W W U rms 800V U i 800V U BB 2430V DC 1100V Û MAX 1380V Û s 1760V U BG -V AC W W W W U rms 1000V U i 1000V U BB 3040V DC 1400V Û MAX 750V Û s 2240V U BG -V AC W W W W U rms 1270V U i 1300V U BB 3860V DC 1800V Û MAX 2300V Û s 3000V U BG -V AC W W W U rms 1500V U i 1500V U BB 4560V DC 2100V Û MAX 2630V Û s 3400V U BG -V AC W W U rms 1800V U i 1800V U BB 5500V DC 2500V Û MAX 3130V Û s 4000V U BG -V AC W W U rms 2100V U i 2100V U BB 6400V DC 3000V Û MAX 3750V Û s 4800V U BG -V AC W W Issue 1 : 11/99

18 9.2 AC Capacitors, MPP, Design B - Damping, Commutation - In accordance with IEC 1071/ VDE 0560 Part 120/121 General Technical Data Dimensions Tanδ o 2 x10-4 D1 a G1 L3 Capacitance tolerance ±10% M8 10 Limiting temperatures C M12 16 Storage temperatures C M12 16 Humidity class F M12 16 Service life h Permitted failure rate 3% Terminals Tab connector 6.3 x 0.8mm Part No: Rated Values Limit Values Dimensions G C n I n R s P vn L e T u î max (du/dt) max î s (du/dt) s D 1 L 1 L 2 L K m µf A mω W nh C A V/µs A V/µs mm mm mm mm mm g U rms 800V U i 800V U BB 2400V DC 1100V Û MAX 1400V Û s 1800V U BG 2600V AC W W W V U rms 1000V U i 1000V U BB 3100V DC Û MAX 1800V Û s 2300V U BG 3000V AC W W W W W W U rms 1200V U i 1200V U BB 3650V DC 1700V Û MAX 2200V Û s 2700V U BG 3400V AC W W W U rms 1270V U i 1300V U BB 3900V DC 1800V Û MAX 2250V Û s 2900V U BG 3600V AC W W U rms 1500V U i 1500V U BB 4560V DC 2100V Û MAX 2600V Û s 3400V U BG 4000V AC W W W W W Issue 1 : 11/99

19 Part No: Rated Values Limit Values Dimensions G C n I n R s P vn L e T u î max (du/dt) max î s (du/dt) s D 1 L 1 L 2 L K m µf A mω W nh C A V/µs A V/µs mm mm mm mm mm g U rms 1800V U i 1800V U BB 5500V DC 2500V Û MAX 3100V Û s 4000V U BG 4600V AC W W W U rms 2100V U i 2100V U BB 6400V DC 3000V Û MAX 3800V Û s 4800V U BG 5200V AC W W W W U rms 2500V U i 2500V U BB 7600V DC 3500V Û MAX 4400V Û s 5600V U BG 6000V AC W W W W Issue 1 : 11/99

20 9.3 AC Capacitors, MPP, Design C - Commutation - according to IEC 1071 / VDE 0560 Part 120/121 General Technical Data Tanδ o 2 x10-4 Capacitance tolerance ±10% Limiting temperatures Storage temperatures Humidity class Service life Permitted failure rate 3% Terminals C C C h Threaded Bolt Dimensions D1 D2 a G2 G1 L M6 x 12 M M10x25 M M10x25 M M10x25 M M10x25 M12 16 Fig. 1 Fig M10x25 M12 16 Part No: Rated Values Limit Values Fig. Dimensions G C n I n R s P vn L e T u î max (du/dt) max î max (du/dt) s D 1 L 1 L 2 L K m µf A mω W nh C A V/µs A V/µs mm mm mm mm mm kg U rms 420V U i 500V U BB 900V AC Û MAX 750V Û s 960V U BG 2000V AC W W W W W W W U rms 525V U i 750V U BB 1130V AC Û MAX 940V Û s 1200V U BG 2500V AC W W W W W V 750V 930V U rms 660V U i 750V U BB 1420V AC Û MAX 1160V Û s 1500V U BG 2500V AC W W W W W W Issue 1 : 11/99

21 Part No: Rated Values Limit Values Fig. Dimensions G C n I n R s P vn L e T u î max (du/dt) max î max (du/dt) s D 1 L 1 L 2 L K m µf A mω W nh C A V/µs A V/µs mm mm mm mm mm kg U rms 800V U i 1000V Fig. U BB 2400V DC Û MAX 1380V Û s 1800V U BG 3000V AC W W W W W W U rms 850V U i 1150V Fig. U BB 2600V DC Û MAX 1500V Û s 1900V U BG 3300V AC W W W W W U rms 1000V U i 1000V Fig. U BB 3000V DC Û MAX 1750V Û s 2300V U BG 3000V AC W W W W W W U rms 1200V U i 1200V Fig. U BB 3700V DC Û MAX 2130V Û s 2700V U BG 3400V AC W W U rms 1250V U i 1250V Fig. U BB 3900V DC Û MAX 2250V Û s 2900V U BG 3500V AC W W W U rms 1500V U i 1500V Fig. U BB 4500V DC Û MAX 2630V Û s 3400V U BG 4000V AC W W W W W U rms 1560V U i 1560V Fig. U BB 4730V DC Û MAX 2750V Û s 3500V U BG 4120V AC W W V 1200V 1400V 1700V 1800V 2100V 2200V 3000V U rms 2100V U i 2100V Fig. U BB 6500V DC Û MAX 3750V Û s 4800V U BG 5200V AC W W W W Issue 1 : 11/99

22 9.4 AC Capacitors, MMP, Design D/E - Damping, General Use according to IEC 1071 / VDE 0560 Part 120/121 Dimensions General Technical Data D 1 L 2 G 1 L 3 K L Tanδ o 2 x M Capacitance tolerance ±10% M Limiting temperatures C M Storage temperatures C M Humidity class F M Service life h M Permitted failure rate 3% M Terminals Tab connector 6.3 x 0.8mm M Dual tab connector 6.3 x 0.8mm M M Fig. 1 Design E Fig. 2 Design D Fig. 3 Design D Part No: Rated Values Limit Values Fig. Dimensions G C n I n R s P vn L e T u î max (du/dt) ma î s (du/dt) s D 1 L 1 m µf A m W nh C A V/µs A V/µs mm mm g U rms 420V U i 500V Fig. U BB 900V AC 600V U rms 1380V Û s 960V U BG 2000V AC W W W W W W U rms 450V U i 500V Fig. U BB 970V AC 640v Û MAX 800V Û s 1100V U BG 2000V AC W W W W W W W W W W W W W W Issue 1 : 11/99

23 Part No: Rated Values Limit Values Fig. Dimensions G C n I n R s P vn L e T u î max (du/dt) ma î s (du/dt) s D 1 L 1 m µf A m W nh C A V/µs A V/µs mm mm g U rms 530V U i 750V Fig. U BB 1140V DC 750V Û MAX 940V Û s 1200V U BG 2500V AC W W W W W W W W W W W W U rms 660V U i 750V Fig. U BB 1420V DC 930V Û MAX 1200V Û s 1500V U BG 2500V AC W W W W W W W W W W W W W W W W W W W W U rms 800V U i 800V Fig. U BB 1720V DC 1100V Û MAX 1380V Û s 1760V U BG 2600V AC W W W W W W W W W W U rms 1000V U i 1000V Fig. U BB 2150V DC 1400V Û MAX 1800V Û s 2240V U BG 3000V AC W W Issue 1 : 11/99

24 9.5 AC Capacitors, MKP, Design D/E - Filtering - according to IEC 1071 / VDE 0560 Part 120/121 General Technical Data Tanδ o 2 x10-4 Capacitance tolerance ±10%, ±5%,-3/+2% Limiting temperatures C Storage temperatures C Humidity class F Service life h Permitted failure rate 3% Terminals Tab connector 6.3 x 0.8mm Dual tab connector 6.3 x 0.8mm Dimensions D 1 L 2 G 1 L 3 K L M M M M M M M M M M Fig. 1 Fig. 2 Part No: Rated Values Limit Values Fig. Dimensions G C n W n I n R s P vn L e T u î max (du/dt) ma î s (du/dt) s D 1 L 1 m µf Ws A mω W nh C A V/µs A V/µs mm mm g 350V U MAX 600V U i 500V Fig. U BB 540V DC U rms 250V Û S 750V Û s 750V U BG 2000V AC W W W V U MAX 1060V U i 1000V Fig. U BB 950V AC U rms 440V Û S 1320V Û s 1320V U BG 3000V AC W W W W V U MAX 1400V U i 1000V Fig. U BB 1420V AC U rms 660V Û S 1600V Û s 1600V U BG 3000V AC W W W W W W W V U MAX 1200V U i 1000V Fig. U BB 1130V DC U rms 525V Û S 1400V Û s 1400V U BG 3000V AC W W W W Issue 1 : 11/99

25 9.6 AC Capacitors, MKP, Design G - Filtering, Commutation according to IEC 1071 / VDE 0560 Part 120/121 General Technical Data Tanδ o 2 x10-4 Capacitance tolerance ±10% (±5%) 12,5 22 M6 23 Limiting temperatures C Storage temperatures C Humidity class F Service life h Permitted failure rate 3% Terminals Thread M6 Part No: Rated Values Limiting Values Dimensions G C n W n I n R s P vn L e T u î max (du/dt) ma î s (du/dt) s D 1 L 1 m µf Ws A mω W nh C A V/µs A V/µs mm mm g 350V AC U i 1000V U BB 500V AC U rms 250V Û s 530V U BG 680V AC W V AC U i 1000V U BB 800V AC U rms 440V Û s 1000V U BG 3000V AC W W W W W W V AC U i 1000V U BB 930V AC U rms 530V Û s 1130V U BG 3000V AC W W W W V AC U i 1000V U BB 1160V AC U rms 660V Û s 1500V U BG 3000V AC W V AC U i 1000V U BB 1400V AC U rms 800V Û s 1700V U BG 3000V AC W W W V AC U i 1500V U BB 2250V AC U rms 1400V Û s 3200V U BG 4000V AC W Issue 1 : 11/99

26 10.1 DC Capacitors, MKP, Design B -Smoothing, Filtering - according to IEC 1071 / VDE 0560 Part 120/121 General Technical Data Dimensions Tanδ o 2 x10-4 D1 a G1 L3 Capacitance tolerance ±10% M8 10 Insulation strength R is xc: >10 000s M12 16 Limiting temperatures C M12 16 Storage temperatures C M12 16 Humidity class F Service life h Permitted failure rate 3% Terminals Tab connector 6.3 x 0.8mm Part No: Rated Values Limit Values Dimensions G C n W n I n R s P vn L e T u î max (du/dt) max î s (du/dt) s D 1 L 1 L 2 L K m µf Ws A mω W nh C A V/µs A V/µs mm mm mm g U rms 450V U i 1000V U BB 1500V DC Û MAX 1250V Û s 1400V U BG 3000V AC W W W W W W U rms 480V U i 1000V U BB 1800V DC Û MAX 1400V Û s 1700V U BG 3000V AC W W W U rms 500V U i 1200V U BB 2400V DC Û MAX 1900V Û s 2200V U BG 3400V AC W W U rms 500V U i 1450V U BB 3000V DC Û MAX 2400V Û s 2800V U BG 3900V AC W W V 1200V 1600V U rms 650V U i 2300V U BB 4800V DC Û MAX 3700V Û s 4200V U BG 5600V AC W V 3200V 4000V U rms 650V U i 2900V U BB 6000V DC Û MAX 4600V Û s 5200V U BG 6800V AC W W Issue 1 : 11/99

27 10.2 DC Capacitors, MKP, Design C, Supporting, Smoothin, filtering - according to IEC 1071 VDE 0560 Part 12 General Technical Data Tanδ o 2 x10-4 Capacitance tolerance ±10% Limiting temperatures Storage temperatures Humidity class Service life Permitted failure rate 3% Terminals C C C h Threaded bolts Dimensions D1 D2 a G2 G1 L M6 x 12 M M10x25 M M10x25 M M10x25 M M10x25 M M10x25 M12 16 Fig. 1 Fig. 2 Part No: Rated Values Limit Values Fig. Dimensions G C n W n I n R s P vn L e T u î max (du/dt) max î max (du/dt) s D 1 L 1 L 2 L K m µf Ws A mω W nh C A V/µs A V/µs mm mm mm mm mm kg U rms 200V U i 1000V Fig. U BB 675V DC 450V Û MAX 560V Û s 630V U BG 3000V AC W W W W U rms 250V U i 1000V Fig. U BB 900V DC 600V Û MAX 750V Û s 840V U BG 3000V AC W W W W W W W U rms 350V U i 1000V Fig. U BB 1125V DC 750V Û MAX 940V Û s 1050V U BG 3000V AC W W W W U rms 400V U i 1000V Fig. U BB 1275V DC 850V Û MAX 1060V Û s 1200V U BG 3000V AC W W W W W Issue 1 : 11/99

28 Part No: Rated Values Limit Values Fig. Dimensions G C n W n I n R s P vn L e T u î max (du/dt) max î max (du/dt) s D 1 L 1 L 2 L K m µf Ws A mω W nh C A V/µs A V/µs mm mm mm mm mm kg U rms 350V U i 1000V Fig. U BB 1350V DC 900V Û MAX 1100V Û s 1260V U BG 3000V AC W W W W U rms 450V U i 1000V Fig. U BB 1500V DC 1000V Û MAX 1250V Û s 1400V U BG 3000V AC W W W W W U rms 480V U i 1000V Fig. U BB 1800V DC 1200V Û MAX 1400V Û s 1700V U BG 3000V AC W W W W W W U rms 500V U i 1000V Fig. U BB 2100V DC 1400V Û MAX 1700V Û s 2000V U BG 3000V AC W U rms 500V U i 1100V Fig. U BB 2250V DC 1500V Û MAX 1800V Û s 2100V U BG 3200V AC W W W U rms 500V U i 1200V Fig. U BB 2400V DC 1600V Û MAX 1900V Û s 2200V U BG 4300V AC W W W W W W U rms 500V U i 1300V Fig. U BB 2700V DC 1800V Û MAX 2200V Û s 2500V U BG 3600V AC W W Issue 1 : 11/99

29 Part No: Rated Values Limit Values Fig. Dimensions G C n W n I n R s P vn L e T u î max (du/dt) max î max (du/dt) s D 1 L 1 L 2 L K m µf Ws A mω W nh C A V/µs A V/µs mm mm mm mm mm kg U rms 500V U i 1450V Fig. U BB 3000V DC 2000V Û MAX 2400V Û s 2800V U BG 3900V AC W W W W W W W U rms 600V U i 1750V Fig. U BB 3600V DC 2400V Û MAX 2800V Û s 3100V U BG 4500V AC W W W W U rms 400V U i 1750V Fig. U BB 3750V DC 2500V Û MAX 2900V Û s 3500V U BG 4500V AC W W U rms 650V U i 2150V Fig. U BB 4500V DC 3000V Û MAX 3500V Û s 3900V U BG 5300V AC W W W W U rms 650V U i 2300V Fig. U BB 4800V DC 3200V Û MAX 3700V Û s 4200V U BG 5600V AC W W W W U rms 650V U i 2900V Fig. U BB 6000V DC 4000V Û MAX 4600V Û s 5200V U BG 6800V AC W W W U rms 900V U i 4500V Fig. U BB 9450V DC 6300V Û MAX 6900V Û s 8200V U BG 10000V AC W W W W Issue 1 : 11/99

30 10.3 DC Capacitors, MKP, Design D/E - Smoothing - Filtering - according to IEC 1071 / VDE 0560 Part 120/121 Dimensions General Technical Data D 1 L 2 G 1 L 3 K L Tanδ o 2 x M Capacitance tolerance ±10% M Limiting temperatures C M Storage temperatures C M Humidity class F M Service life h M Permitted failure rate 3% M Terminals Tab connector 6.3 x 0.8mm M Dual tab connector 6.3 x 0.8mm M M Fig. 1 - Design E Fig. 2 - Design D Fig. 3 - Design D Part No: Rated Values Limiting Values Fig. Dimensions G C n W n I n R s P vn L e T u î max (du/dt) max î s (du/dt) s D 1 L 1 m µf Ws A mω W nh C A V/µs A V/µs mm mm g U rms 200V U i 500V U BB 680V DC 450V Û MAX 560V Û s 680V U BG 2000V AC W W W W W W U rms 300V U i 500V U BB 900V DC 600V Û MAX 750V Û s 900V U BG 2000V AC W W W W W W W U rms 400V U i 700V U BB 1280V DC 850V Û MAX 1050V Û s 1250V U BG 2400V AC W W W W W U rms 525V U i 1000V U BB 1350V DC 900V Û MAX 1050V Û s 1250V U BG 3000V AC W W Issue 1 : 11/99

31 10.4 DC Capacitors, MPP, Design B - Smoothing, Damping - according to VDE 0560 Part 11 General Technical Data Dimensions Tanδ o 2 x10-4 D 1 a G 2 G 1 Capacitance tolerance ±10% M5 x 10 M8 Insulation strength R is x C >10 000s M5 x 10 M12 Limiting temperatures C M5 x 10 M12 Storage temperatures C M5 x 10 M12 Humidity class Service life Permitted failure rate 3% Terminals F h Threaded bolt Part No: Rated Values Limit Values Dimensions G C n I n R s L e T u î max I eff (du/dt) max D 1 L 1 L 2 L K m µf A mw nh C A A V/µs mm mm mm mm mm g 1000V Overvoltages: 6h/d 1050V Test Voltages: U BB 1500V DC, 2s U rms 70V 1min 1250V U BG 3000V DC, 60s Û s 1500V W W W W W W W W V Overvoltages: 6h/d 1680V Test Voltages: U BB 2400V DC, 2s U rms 110V 1min 2000V U BG 4800V DC, 60s Û s 2400V W W W W W W V Overvoltages: 6h/d 2100V Test Voltages: U BB 3000V DC, 2s U rms 140V 1min 2500V U BG 6000V DC, 60s Û s 3000V W W W W W V Overvoltages: 6h/d 3300V Test Voltages: U BB 4700V DC, 2s U rms 220V 1min 4000V U BG 9450V DC, 60s Û s 4700V W W W Issue 1 : 11/99

32 Part No: Rated Values Limit Values Dimensions G C n I n R s L e T u î max I eff (du/dt) max D 1 L 1 L 2 L K m µf A mw nh C A A V/µs mm mm mm mm mm g 4000V Overvoltages: 6h/d 4200V Test Voltages: U BB 6000V DC, 2s U rms 280V 1min 5000V U BG 12000V DC, 60s Û s 6000V W W W W V Overvoltages: 6h/d 660V Test Voltages: U BB 9450V DC, 2s U rms 440V 1min 7800V U BG 18900V DC, 60s W Û s 9500V Issue 1 : 11/99

33 10.5 DC Capacitors, MPP, Design C - Smoothing, Damping - according to VDE 0560 Part 11 General Technical Data Dimensions Tanδ o 2 x10-4 D 1 D 2 a G 1 L 3 Capacitance tolerance ±10% M12 16 Insulation strength R is x C >10 000s M12 16 Limiting temperatures C M12 16 Storage temperatures C M12 16 Humidity class Service life C Permitted failure rate 3% Terminals h Threaded bolt Part No: Rated Values Limit Values Dimensions G C n I n R s L e T u î max I eff (du/dt) max D 1 L 1 L 2 L K m µf A mω nh C A A V/µs mm mm mm mm mm kg 1000v Overvoltages: 6h/d 1050V Test Voltages: U BB 1500V DC, 2s U rms 70v 1min 1250V U BG 3000V DC, 60s Û s 1500V W W W W W V Overvoltages: 6h/d 1680V Test Voltages: U BB 2400V DC, 2s U rms 110V 1min 2000V U BG 4800V DC, 60s Û s 2400V W W W W W W W W V Overvoltages: 6h/d 2100V Test Voltages: U BB 3000V DC, 2s U rms 140V 1min 2500V U BG 6000V DC, 60s Û s 3000V W W W W W W Issue 1 : 11/99

34 Part No: Rated Values Limit Values Dimensions G C n I n R s L e T u î max I eff (du/dt) max D 1 L 1 L 2 L K m µf A mω nh C A A V/µs mm mm mm mm mm kg 3150V Overvoltages: 6h/d 3300V Test Voltages: U BB 4700V DC, 2s U rms 220V 1min 4000V U BG 9500V DC, 60s Û s 4700V W W W W W W W V Overvoltages: 6h/d 4200V Test Voltages: U BB 6000V DC, 2s U rms 280V 1min 5000V U BG 12000V DC, 60s W W W W W 6000V V Overvoltages: 6h/d 6600V Test Voltages: U BB 9450V DC, 2s U rms 440V 1min 7900V U BG 18900V DC, 60s Û s 9500V W W W W W W Û s Issue 1 : 11/99

35 10.6 DC Capacitors, MPP - General Use according to VDE 0560 Part 14 General Technical Data Tanδ o 2 x10-4 Factor of voltage reduction at termperature >40 o C : 60 C: 0.94 Capacitance tolerance ±10% 70 C: 0.86 Insulation strength R is x C >10 000s 85 C: 0.65 Limiting temperatures C Storage temperatures C Humidity class F Service life h Permitted failure rate 3% Terminals Solder slug Dimensions D 1 G 1 L 3 K L 25 M M M M M M M M Fig. 1 Fig. 2 Part No: Rated Values Limiting Values Fig. Dimensions G C n W n I n R s L e T u î max I eff (du/dt) max D 1 L 1 m µf Ws A mω nh C A A V/µs mm mm g DB: 630 V U rms 430 V Û max 1600V (1ms) U BB 880V DC KB: 790 V Û s 1900V (1µs) U BG 3000V AC W W W W W W W W W W W W W W W DB: 850 V U rms 530 V Û max 2125V (1ms) U BB 1190V DC KB: 1060 V Û s 2600V (1µs) U BG 3700V AC W W W W W W W W W W W W W W W Issue 1 : 11/99

36 10.7 DC Capacitors, SMKP, Rectangular Case - Filtering, Smoothing - - possible ratings in available standard case sizes - according to IEC 1071 / VDE 0560 Part 120/121 General Technical Data Tanδ o 2 x10-4 Rated Current: A depending on type Capacitance tolerance ±10% (du/dt)max V/µs depending on type Limiting temperatures C Service life h Storing temperatures C Permitted failure rate 3% Humidity class C Possible ratings in available standard case sizes Rated Voltage Case Height L 1 DC 280mm 400mm 500mm 600mm 700mm 800mm 750 V µf 900 V µf 1100 V µf 1200 V µf 1600 V µf 1800 V µf 2000 V µf 2400 V µf 2700 V µf 3000 V µf 3600 V µf 4000 V µf 35 Issue 1 : 11/99

37 Other Power Capacitors also available:! Naturally or Water cooled, Medium Frequency Capacitors! IGBT Snubbers! GTO Snubbers! Special Applications Semiconductor Products available:-! 87/100mm Thyristors! Phase Control and Fast Thyristors! Rectifier and Fast Recovery Diodes! GTO Thyristors! Isolated Base Thyristor/Diode Modules! IGBT Modules! Engineered Silicon Assemblies! Custom Built Air, Water or Oil Cooled Assemblies! Semiconductor Protection Fuses For further information on Capacitors, or any other Westcode products, please contact the Sales Office or your local Distributor WWW: USA: Westcode Semiconductors Inc 3270 Cherry Avenue, Long Beach, California Tel: Fax: UK: Westcode Semiconductors Ltd P O Box 57, Chippenham, Wiltshire England SN15 1JL Tel: +44 (0) Fax: +44 (0) WSL.sales@westcode.com Westcode reserves the right to change specifications at any time without notice. Westcode Semiconductors Ltd