G. Gallet

French distribution systems: basic features and practices

R. Tellier, G. Gallet

The paper focuses on current and future trends in French practice regarding the design and construction of medium voltage distribution systems and primary distribution substations. The equipment used and practices employed in rural areas, medium sized and large towns are described. Cost-effective …

fr (code pays fourni par la source)

Influence of A. C. Test Procedure on Breakdown of Air Insulations Comparison with Switching Impulse Tests

J. P. Urbain, J. Lalot, G. Gallet

A.C. voltage tests carried out on various air gaps prove that breakdown parameters vary with test procedure. These variations can be taken into account by using a model, in which A.C. voltage is considered, from a breakdown probability point of view, as …

fr (code pays fourni par la source)

Influence of A.C. Test Procedure on Breakdown of Air Insulations Comparison With Switching Impluse Tests

J. P. Urbain, J. Lalot, G. Gallet

fr (code pays fourni par la source)

Comparative study of three methods for computing electric fields

Michael Beasley, J.H. Pickles, G. Gallet, J. P. Grégoire et autres

The paper is concerned with the calculation of electrostatic potentials and fields for realistic engineering problems. Three computational methods, the charge-simulation method, the finite-element method and the Monte Carlo method, have been programmed for practical use. To test their accuracy, the results …

gb, fr, it (code pays fourni par la source)

Analysis of the Switching Impulse Strength of Phase-To-Phase Air Gaps

G. Gallet, Bernard Hutzler, Jean-Pierre Riu

This paper presents the results of an analytical and physical study of the phase-to-phase strength based on experiments carried out at Renardières.

fr (code pays fourni par la source)

Switching impulse results obtained on the outdoor testing area at renardieres

G. Gallet, M.-O. Bettler, G. Leroy

This paper reports the switching impulse test results obtained simultaneously indoors and outdoors. New tests on the conductor-ground and conductor-rod configurations are presented. Mathematical expressions have been established to represent these results, and some explanation has been attempted by the study of …

fr (code pays fourni par la source)

General expression for positive switching impulse strength valid up to extra long air gaps

G. Gallet, G. Leroy, Robert J. Lacey, István Krómer

A new algebraic expression has been established for the critical sparkover voltage (CSOV) afair insulation submitted to positive switching impulses. By using the concept of the gap factor, the expression is found to be valid for all practical gap configurations in the …