Turntable device with heavy-current output used for anechoic chamber

Abstract

The invention provides a turntable device with a heavy-current output used for an anechoic chamber. The turntable device comprises an upper-layer turntable and a lower-layer turntable which are fixedly connected with each other, wherein a heavy-current generating device is arranged on the lower-layer turntable; the heavy-current generating device comprises three transformers with multiple magnetic circuits, three voltage regulators and a control cabinet; the control cabinet is connected to the three voltage regulators; and the three voltage regulators are connected to the corresponding transformers with multiple magnetic circuits. Compared with the prior art, the turntable device provided by the invention has the advantages that: 1) since a double-layer turntable structure with heavy-current output is adopted, electromagnetic compatible emission measurement can be performed on a high-voltage electric device and the problems which cannot be solved by an ordinary turntable can be solved; 2) a power feeding line is connected to the heavy-current generating device through a filter, thereby ensuring an electromagnetic shielding property of a measured device, promoting the measuring accuracy and preventing a power grid from being interfered by a harmonic wave generated by the voltage regulators; and 3) the measured device and the heavy-current generating device are connected through three lifting copper bars, so that the connection in a test process is convenient.

Description

【Technical field】 [0001] The invention relates to the technical field of electromagnetic compatibility testing, in particular to a turntable device for large current output in radiation measuring equipment in an anechoic chamber. 【Background technique】 [0002] Radiation emission measurement belongs to the category of electromagnetic compatibility measurement. During the measurement of electromagnetic compatibility radiation, the darkroom is a necessary measurement equipment. In radiation emission measurement, some measurement standards require that the device under test needs to be rotated during the measurement process in order to measure the largest radiation surface. Therefore, the turntable is an important test equipment in the darkroom, and the excellent design of the turntable will directly affect the electromagnetic properties of the device under test. Compatible radiation generation test results. [0003] In order to ensure the multi-functionality and multi-purpose...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the normal working current of high-voltage electrical equipment is as high as thousands of amperes, and ordinary turntables cannot provide the required high current

At present, the turntables used in many research institutes can rotate without high current, and some turntables used in some testing centers have special interfaces with high current, but this special interface cannot follow the turntable.

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