An Active Triggered Surge Protective Gap

• Published in: Plasma science & technology 2012-08, Vol.14 (8), p.759-764, Article 759
• Main Authors: Yao, Xueling, Chen, Jingliang
• Format: Article
• Language: English
• Subjects: 保护间隙; 宾夕法尼亚州; 浪涌保护装置; 浪涌保护设备; 电涌保护器; 直流击穿电压; 脉冲电压; 触发电路
• ISSN: 1009-0630
• DOI: 10.1088/1009-0630/14/8/14

A triggered surge protective device is designed and its discharge characteristics axe studied. The experimental results show that the triggered surge protective device has excellent surge protective characteristics. When the gap distance is 5 mm, p. d is 90 Pa.mm and without an active energy trigger circuit, the DC breakdown voltage of the triggered surge protective device is 2.32 kV and the pulse breakdown voltage is 5.75 kV. Therefore, the pulse voltage ratio, which is defined as the specific value of pulse breakdown voltage and DC breakdown voltage, is 2.48. With a semiconductor ZnO flashover trigger device and an active energy coupling trigger circuit, the pulse breakdown voltage can be reduced to 3.32 kV, the pulse voltage ratio is 1.43 and the response time is less than 100 ns. These results are helpful in laying a theoretical foundation for further studies on triggered surge protective devices.