The seismic test belongs to the tests of qualification process of I&C, mechanical and electrical components and equipment, or the entire sets of components (panels, boards, switchboards or mounting frames with mounted devices and equipment) to prove that they are able to maintain their seismic resistance.
The basic recommendations and standards for seismic testing are included in the international IEC 60980 standard and in the IEEE 344 standard.
In general, the seismic loads are defined by RRS (Required Response Spectrum). Since the components are located on different floors, it is necessary to create an RRS for each floor where the tested components are located.
The gradual movement can be carried out by different shapes of excitation waves: STN IEC 60980, Section 6.4: a) waves with higher number of frequency: - random vibrations, operation records b) waves with deterministic frequency - sinusoidal wave with constant frequency, sinusoidal wave strokes, sinusoidal wave with sweeping frequency and other wave shapes.
The tests are performed on electrodynamic or hydraulic seismic stands.