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MKT050102F500A Datasheet(PDF) 4 Page - Sharma Electro Components,Inc |
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MKT050102F500A Datasheet(HTML) 4 Page - Sharma Electro Components,Inc |
4 / 29 page Figure 2.3A Polystyrene Dissipation Factor Vs. Temperature 2.4 FREQUENCY DEPENDENCE OF DISSIPATION FACTOR Dissipation factor increased with frequency. The variation pattern is different for different dielectrics. The typical variation pattern for different dielectrics are shown in fig. 2.4A, 2.4B and 2.4C. 2.5 TEMPERATURE DEPENDENCE OF INSULATION RESISTANCE The insulation resistance of the dielectric varies with temperature. The variation pattern is different fro different dielectric films. The typical variation pattern for different dielectrics are shown in figure 2.5A, 2.5B and 2.5C. ELECTRICAL - AC APPLICATIONS When a capacitor is connected to alternating voltage its electrodes are alternately charged positive and negative. The charge alternates with a rhythm of double the frequency of the alternating voltage. Thus there is alternating current flowing in the leads of the capacitor. 3.1 ACROSS THE LINE APPLICATIONS In this application the capacitor is connected between the lines, ie, between the main phase and neutral line terminals. In this type of application, failure of capacitor due to short circuit will not result in an electric shock. The capacitors rated for normal across the line applications are termed class-X2 capacitors. 3.2 BETWEEN LINE AND GROUND APPLICATIONS In this type of application the capacitors are connected between the line and the ground, ie, between the phase terminal and the body. In this application, failure of the capacitor due to short circuit could possibly expose somebody touching the appliance to an electric shock. The capacitors rated for this application are termed class- Y capacitors. MECHANICAL CHARACTERISTICS 4.1 RESISTANCE TO SOLVENTS The encapsulation technics adopted in the manufacture of plastic film capacitors ensure resistance to a wide range of solvents and cleaning liquids. The epoxy end sealed boxed capacitors can stand Trichloro trifluorethane, Methanol, Ethanol, Isopropanol and Aqueous cleaning solvents. 4.2 SOLDERABILITY A minimum of 3/4 of the circumferential surface of the terminations will be covered with new solder when dipped in molten solder bath at 230 °C for 2 ±1 sec. after immersing in methanol - rosin solution at room temperature for 5 to 10 seconds. Figure 2.3B Figure 2.3C Polyester Dissipation Factor Vs. Temperature Polypropylene Dissipation Factor Vs. Temperature Figure 2.4A Figure 2.4B Polystyrene Dissipation Factor Vs. Frequency Polyester Dissipation Factor Vs. Frequency Figure 2.4C Polypropylene Dissipation Factor Vs. Frequency Figure 2.5A Polystyrene Insulation Resistance Vs. Temperature Figure 2.5B Polyester Insulation Resistance Vs. Temperature Figure 2.5C Polypropylene Insulation Resistance Vs. Temperature 4.3 TERMINAL STRENGTH The leads are made of tinned copper wire. The terminals are capable of withstanding an axial load of 2.25 Kgs(5 lbs). ENVIRONMENTAL RESISTANCE TO HUMIDITY The capacitor samples will be exposed to 93 ±2 °C for 56 days at 40 ±2 °C. After the test the capacitance change shall be within 3% of the original value, The insulation resistance shall be within 50% of the initial limits and the dissipation factor shall remain within the initial specifications. Sharma Film Capacitors |
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