Shielding Design of High Voltage Test Hall

Tan Ying
HIMALAYAL - SHANGHAI - CHINA

Abstract: To insure the measurement precision of high voltage test, the high voltage test hall should have good shielding system. Combined with the construction example of a high voltage hall, some issues which should be paid attention to in the design of high voltage hall shielding are introduced. The shielding of high voltage hall is analyzed, and key points and measures of shielding design in high voltage hall are introduced. The way to pore treatment on shielding body is given. It could provide references for designers. 

Key words: High voltage test hall, shielding, grounding, cut off waveguide, pore treatment 

Introduction 
Electric design of high voltage test hall is mainly involved in three key points: grounding, shielding and safety. The well-designed shielding system of high voltage test gall is vital to smooth operation of high voltage test hall. As for high voltage test, roles of good shielding are as follows:
(1)Ensure the reliability and precision of measuring equipment (including display and record instrument).
(2)Prevent shock wave from disturbing low-voltage control circuit or other test equipments in the impulse test.
(3)Stop shock wave from affecting outside the high voltage test room and disturbing the power supply.
(4)Restrain external electromagnetic field from disturbing PD measurement test, which leads to measurement error.
(5)Protect the health of human body (5)within the range of electromagnetic radiation and interference.
Combined with the construction example of a high voltage test hall, its shielding design and measures are presented in this paper.