Testing and measurement techniques. Surge immunity test British Standard. Immunity to conducted disturbances, induced by radio-frequency Voltage dips, short interruptions and voltage variations This standard is not included in any packages. We have no amendments or corrections for this standard. Request Proposal Price. Proceed to Checkout Continue Shopping. English Hardcopy.
It additionally defines ranges of test levels which relate to different environmental and installation conditions and establishes test procedures. The object of IEC is to establish a common and reproducible basis for evaluating the performance of electrical and electronic equipment when subjected to electrostatic discharges.
In addition, it includes electrostatic discharges which may occur frompersonnel to objects near vital equipment. IEC defines typical waveform of the discharge current, range of test levels, test equipment, test setup, test procedure, calibration procedure and measurement uncertainty. Approximately single discharges are made to the ground plane, with a minimum time interval of 1 secondbetween discharges. Support equipment was located outside the testingroom.
Test level three stipulates ESD events of up to and including 8 kV using thethrough air discharge method and up to and including 8 kV using the direct contact discharge method. A calibration of the field is preformed to validate the uniformtest area. This uniform areasize is 1. An isotropic field strength probe is placed within the empty room connected to the fieldstrength monitor over a fiber optic cable.
The signal level to the radiating system is adjusted until the required fieldintensity is indicated. The frequency range is swept from 80 MHz to MHz. The voltage or power required atthe output terminals of the amplifier to establish the specified field is monitored and recorded. The number of pointsto be tested to demonstrate uniformity is 16, at 0.
The EUT is placed in the center of the enclosure on a wooden table if tabletop equipment , while a broadbandtransmitting antenna is placed 3 meters away see Figure 3. The EUT support equipment is placed outside ofthe shielded enclosure.
Cable connections from inside to outside of the enclosure are made through feed throughconnectors. EUT connections to its support equipment are made through an access hole in the shielded enclosure.
The frequency is then swept across the entire range of interest at the required field strength while monitoring theEUT for performance. The sweep is repeated for both horizontal and vertical polarizations of the antenna andagain, for all sides of the EUT in succession. Export To Word. Last View : Today.
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