When the dissipated energy is the same, the transient pressure rise will be the transient pressure increase in the arc chamber without the heat sink without the heat sink and the only transient transient pressure of the heat sink, the relationship with the dissipated energy. The curve is a conclusion to illustrate this observation. It is approximated that the gases in the arc chamber have a well-defined average temperature and are assumed to be the same temperature. This assumption does not apply to the part containing the arc but the gas in these parts only accounts for a very small part of the entire gas volume of the arc extinguishing chamber. Furthermore, the mass of gas present in the arc extinguishing chamber can be regarded as constant due to the blocking effect of the high current arc. Very little of the gas can escape from the arc chute.
Finally, according to U lE and considering the density constant, it can be estimated that the temperature-dependent pressure line is equivalent to the ideal gas (P=p RT). For the Gong gas, it is noticed that the T>130K starts to deviate from the ideal gas, which can be given according to the given gas. The test pressure is increased to determine the average temperature of the gas. The test data is applied to this. When the dissipated energy is 5kJ, the average gas temperature of the arc extinguishing chamber without the heat sink under standard conditions is 1750 and the heat sink is only IX. (The relationship between the pressure rise and temperature is in the arcing phase.
The increase in gas temperature in the arc chute is due to arc radiation and hot gas conduction. The heat sink is loaded in this way to minimize thermal coupling between the arc radiation and the gas exiting the fins from the arc. The relationship between the thermal value and the gas temperature indicates that the decrease in the average temperature of the gas from 17K to 1K when the heat sink absorbs 1.5 kJ is critical to reducing the recovery current after the arc.
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