The systemic switching impulse discharge tests of rod-plane air gaps with 0.

In accordance with the project of UHV AC transmission and substation to be constructed,this paper researches the switching impulse discharge characteristic curve of 1 000 kV AC substation equipment air gap,based on the 1 000 kV AC power transmission & transformation project from the southeast in Shanxi province to Jingmen of Hubei province.

At high altitude the switching impulse discharge performance of an air-gap is one of design foundations for the external insulation of the extra & ultra-high voltage,also is one of essential technique that did not solved yet.

This paper introduced the new IEC60076 -4 test guidance of lightning surge and switching surge for power transformer and reactor, which is the new edition of IEC722 (1982).

We use MSC Patran as preprocessing and postprocessing platforms to build the impact model for the liquid storage tank of a fuze and MSC Dytran as a solution-seeker to study the anti-impact characteristics and dynamic response of the liquid storage tank with different structures.

The paper presents a dynamic model of impact process based on the working condition of drilling pump valve,and analyzes its impact characteristics.

Based on the analysis of impact characteristics of coupler draft gears when railway vehicles are marshalling and coupling.

Measuring the shock characteristic of small wire-rope vibration isolators by hammering;

Experimental investigation on shock characteristic of wire rope isolator;

Considering the limitation of the shock experiment of a drop hammer,a shock simulation experiment platform is used to test the shock characteristics of isolators.