Overview: The second generation of TBP over-voltage protection (hereinafter referred to as the protector) is a new type of over-voltage protection, over-voltage and to limit atmospheric vacuum switch caused by a variety of over-voltage. Ground on phase overvoltage protection, they also provide protection against over-voltage phase. Particularly suitable for use with different types of KYN, XGN, GBC, JYN, GZS, etc. to 35kV switchgear cabinet package. Use and implementation of standards: The protection structure unique, compact appearance, greatly reduced the use of space, reasonable and reliable technical performance. Gapless product implementation JB / T 10496-2005 "AC three-phase modular metal oxide surge arresters without gaps for the" standard; a gap product implementation JB / T 10609 "AC three-phase combined with series MOA" Standard; right the above criteria are not clearly defined in other important electrical parameters, according to the DL / T 620-1997 "AC Electrical installations in over voltage protection and insulation coordination" of the design. Conditions of use: 1, suitable for indoor; 2, ambient temperature -40 ℃ ~ +40 ℃; 3, Altitude 2000m and below (above 2000m altitude should use special products); 4, the power frequency is not less than 48Hz, is not greater than 62Hz; 5, seismic intensity of 8 degrees and below; 6, the maximum wind speed 35m / s and below; 7, heavy pollution and below; 8, the mount point should not exceed the continuous voltage fluctuation protection continuous operating voltage. Performance advantages: 1, using four star connection, not only can greatly reduce the over-voltage phase and relative level of protection has substantially improved, the real play against over-voltage vacuum switch effectively limit; 2, the choice of anti-aging, hate Waterborne strong silicone rubber composite material as external insulation, the overall production of a molding vulcanization. Electrical insulation and mechanical properties superior to conventional porcelain jacket and suit jacket composite technology products; 3, high-pressure side using insulated cable wiring leads from the inside of the product, which greatly reduces the side protector phase insulation between each unit distance, Compact structure, lightweight, easy to install. 4, with explosion-proof safety device, the problem occurs when the product may be abnormal exit system to prevent explosion.