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Download Electronicon Capacitor Datasheet
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Standard Capacitors Ratings & Dimensions Part No. kVAr @ kVAr @ 415VAC 525VAC 275.546-703803 6.25 10 3×38 3×11 275.176-707700 12.5 20 3×77 275.398-715401 25 40 3×154 Cn (µF) In Imax D1(D2)xL1 (mm) Dimensions Weight Resistor (kg) Module 3×18 75(79.5)×230 1.0 Included with Capacitor 3×22 3×36 100(104.5)×230 1.7 275.100-10180 3×44 3×72 136(140.5)×245 3.7 275.100-10120 General Data (All Standard Capacitors) D2 Operating Voltages: IEC 831 24 hours/day……………………. 525V 8 hours/day……………………... 580V 30 min/day…………………….... 600V 5 min/day.....................………… 630V 1 min/day................................... 680V Max. peak rating.......................1600V Capacitor Losses: Dielectric (Winding)................<0.2 W/kVAr Total Capacitor.................0.25~0.4 W/kVAr Life Expectancy: IEC 831 Temp. Class “D”..............100,000h IEC 831 Temp. Class “C”..............130,000h Test Voltages (IEC 831-1): Between terminals..................... 1130V AC/2sec. Between terminals and Case..... 4500V AC/2sec. L1 16 M12 D1 Complying to the following Standards: IEC60831(2003), VDE 0560-46/47 CSA C22.2 No. 190-M1985 UL Standard No. 810 GOST 1282-88 Miscellaneous Temperature Range/Class...................................... -40°C to IEC831 Class C/D Internal Connection................................................. Delta Rated Frequencies.................................................. 50/60Hz Filling Material......................................................... Nitrogen Gas Tolerance of capacitance........................................ ± 5% Protection against electrical faults........................... Self healing dielectric & overpressure device Protection against accidental contact...................... IP20 Terminals Altitude.................................................................... 4000M Internal Protection. The dielectric structure used in the capacitors is self healing. If there is a puncture in the insulation between the metallic layers due to a voltage transient, then a short circuit will develop (1). This will cause a very sudden and local temperature rise that will vaporize the surrounding metallic layer and generate Pressure (2). This will get rid of the short circuit and the pressure will push apart the metallic layers to further establish the insulation (3). The puncture in the insulation is typically the size of a pin prick The capacitor remains fully functional after the event. Metallic Layer Dielectric (Insulation) BAM - Break Action Mechanism When the capacitor has come to the end of its life or is subjected to high temperatures or overvoltages that surpass its ratings, the pressure build up in the capacitor due to the self healing process will be such that the capacitors Break Action Mechanism (BAM) will operate. The pressure will force the lid up which will break the prepared links thereby isolating the capacitor from supply. This will prevent the capacitor from bursting. (1) (2) (3) Short circuit Metallic layer vaporized Short Circuit cleared Principle of the Break Action Mechanism Terminal Lid Crimp Break Action Spot. To ensure correct operation of the Break Action Mechanism, there should be a 35mm clearance above the terminals. Electrical connections to the terminals should be with flexible cable or copper braid. Using the terminal, lid or crimp part of the capacitor should be avoided when mounting the capacitor otherwise the break action mechanism may not operate. Capacitors consist mainly of polypropylene. They may rupture and ignite as a result of internal faults or external overload e.g. temperature, overvoltage, harmonic distortion. Appropriate design measures must be taken to ensure that the capacitors do not form a hazard in the event of a failure of the safety mechanism. Capacitor before the functioning of the BAM Capacitor after the functioning of the BAM Construction Details Dielectric The dielectric is made up of two layers of metallized polypropylene film. A thin self healing mixture of zinc and aluminium is metallized directly on one side of the film under vacuum. The film is wound into rolls and the ends are sprayed with a metal contact layer. This allows a transfer of high currents and ensures a low inductance load connection between the terminals and the windings. Casing Winding element The winding elements are placed in aluminium cans and then hermetically sealed. The silver colour of the cans will help prevent the capacitor from absorbing heat from other sources like reactors, contactors, etc. Polypropylene film, uncoated Sprayed metal contact layer Polypropylene film, metal deposit on one side. Filling Materials Filling materials contained within capacitors are necessary because they protect the capacitor electrodes from oxygen, humidity and other environmental interference. Without such protection, the metallized coating would corrode and reduce the amount of capacitance. This would lead to early capacitor failure. Electronicon use an elaborate vacuum drying procedure immediately after the winding elements have been inserted into the capacitor case. The heat transfer properties of an oil filled capacitor are better than the gas filled but mounting options are restrictive. Gas filled capacitors can be mounted in almost any position (except where the terminals point downwards) and are approximately 15% to 20% lighter. There is little risk of leakage because the capacitors are hermetically sealed. Should there be a leakage, the filling materials are non toxic and inert. Environmentally friendly Electronicon capacitors do not contain polychlorinated biphenyl (PCB), solvents or any other toxic or banned substance. They are not classed as dangerous goods and do not present a danger to health or the environment. If the break action mechanism has operated, care must be taken when disposing of the capacitors because the capacitor may still be charged even after weeks have passed. NHP now sources its capacitors from Electronicon. ELECTRONICON Kondensatoren GmbH (former RFT Kondensatorenwerk Gera) have been associated with the manufacture of capacitors in Gera since the late 1930s, when the SIEMENS organisation moved part of their production facility from Berlin to eastern Thuringia in the heart of Germany. Since then, the company has extended considerably. Highest quality and reliability of all products have been the core of our philosophy from the very start. Continual development in its product ranges has resulted in ELECTRONICON becoming one of Europe's leading capacitor manufacturers supplying customers worldwide. The company employs about three hundred and thirty qualified engineers and skilled workers in its manufacturing facilities, producing capacitors for lighting, motor, and power electronics applications, further components, modules and capacitor banks for power factor correction. Regular investment in advanced and environmentally sound technologies guarantees the highest level in manufacture and quality to modern standards which are approved by standard authorities all over the world. The ELECTRONICON system of quality assurance has been approved by the TÜV organisation to DIN EN ISO 9001. Since 1985 the company has also been in a position to offer metallized dielectric material complying with the highest technical standards. This guarantees an uninterrupted qualitycontrol of all relevant manufacturing stage. Features Benefits Gas filled Capacitors -Mount in almost any position -15% to 20% lighter -Less maintenance than oil filled capacitors Elaborate Setup for manufacturing, drying & sealing the dielectric into the aluminium case under vacuum -Purges the capacitor of any oxygen or moisture that can cause internal deterioration and early failure. Self healing dielectric -Capacitor can repair itself if there is a small break down in the insulation due to temperature & overvoltages. Over pressure device -Prevents the capacitor from bursting and igniting if the capacitor is exposed to high temperatures and over voltages. Touch proof terminals (IP2X) -Prevents accidental contact with capacitor terminals -Fast and easy method for connecting cables -Spring mechanism ensures reliable connection Single mount stud -Quick and easy mounting of capacitors Modular resistor block -Quick and easy connection of discharge resistors Environmentally friendly does not contain PCBs -Capacitors are easy to dispose of and won’t harm the environment. Wave like edge on the dielectric -Higher transfer of current wound into thick coils -less stress on the capacitor