Mestcheryakov V.P. Explosive erosion of high-current contacts and electrodes. Ulyanovsk: 2012. – 189 p.

The results of experimental and theoretical researches of erosion of opening contacts and deion plates of arc chamber at interrupting of short-circuit currents by low-voltage automatic breakers are stated in the book.

The book is intended for high readership and foremost for engineers concerned with practical studies of designs of the breakers, their tests and researches.

Revised and enlarged edition.

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Dear colleagues! Please, send your responds, questions and criticism for Valentin P. Mestcheryakov to the address samoilov_vadim@mail.ru (Vadim V. Samoilov, editor of “Electric arc of the high power in circuit breakers”, part 1, 2006).

To download “Electric arc of the high power in circuit breakers” (two parts, in russian) click here.

The preface

Brought to attention of the reader the book is actually a book continuation “Electric arc of the high power in circuit breakers”, published in two parts by Joint Stock Company “Kontaktor” (Ulyanovsk) in 2006 and 2008. In the present work physical processes on opening argentiferous composite contacts at switching-off of short-circuit currents by low-voltage circuit breakers are considered in more details. In the book “Electric arc of the high power in circuit breakers” in practical engineering calculations of erosion of contacts the power density q_bs, coming on cathodic and anode spots of arc, was taken to be equal. Therefore the cathode and the anode by such calculation methods were exposed to erosion equally. The total mass of contacts erosion composed the sum of masses of erosion oh the cathode and the anode.

In the present work the differentiated estimation of erosion of the cathode and the anode is accepted at switching-off of short-circuit currents. As a result of the differentiated approach to an estimation of erosion of the cathode and the anode with use of experimental data a number of the new physical phenomena on base spots of arc with a discrete core we will make mention of formation of microplasmoids in which currents of ectons proceed.

The author expresses deep gratitude and sincere gratitude for translation of the present book to Stanislav Akachev.

V.P. Mestcheryakov

2012