Comparison of some models of reaction kinetics in HV circuit breakers with SF₆ after current zero

In this paper, the solutions of three models of reaction kinetics in HV circuit breakers with SF₆ after current zero are presented and compared. One model has been proposed by Bartlová, the co-author of this paper, the other two models under comparison have been taken over from the literature. In all the three models a constant pressure p(t) = 4 atm and the same dependence of temperature on time T(t) are assumed. For the description of the relation between equilibrium and kinetic composition in a system, the concept of asymptotic composition is introduced. A comparison of the composition and enthalpy of the products of SF₆ dissociation and ionization for the given pressure and T(t) is made. General conclusions have been derived from the comparison.