SH90

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Gas discharge tube arresters (GDT), also known as surge arresters, are passive electronic devices that protect electrical equipment from voltage transients that exceed a certain capacity, helping to maintain the system\'s safety and stability. SH90 is a type of metal oxide gas discharge tube arrester with a wide range of applications.

The SH90 arrester is made up of a metal oxide varistor (MOV) and a gas discharge tube (GDT). The MOV is a non-linear resistance element with high electrical breakdown strength and a voltage regulator with wide margin of overload protection and quick response. The MOV shunt is very strong, capable of clamping voltage transients up to 8 kV. The GDT provides a high-speed path for current flow, which eliminates high transient voltages in the system.

The SH90 arrester is designed for over-voltage protection of power plants, power systems, communication equipment, and other related power systems, and its working principle is to protect against transient overvoltage. It uses a combination of MOV and GDT to provide short circuit protection and voltage reducing function. A bypass capacitor is also included to reduce the hesitation time and provide lower voltage protection.

The combination of the MOV and GDT provide ideal lightning protection performance. The MOV is responsible for diverting the high energy from lightning strikes while the GDT helps in limiting the surge voltage. The high current bypass capacitor helps to reduce delays and maintain longer service life and low voltage protection.

SH90 is suitable for a wide range of applications because of its outstanding performance and reasonable price. It can be used in medium-voltage power distribution systems, underground power distribution systems, medium-voltage transformer systems, industrial and commercial power systems, and communication systems. The line terminal of the arrester can be connected to the main power line directly, saving labor cost and installation time.

In summary, the SH90 arrester is an outstanding protective device with excellent performance. It is designed to provide protection against voltage transients from lightning strikes, over-voltages, and other electrical disturbances. The SH90 arrester is suitable for a wide range of applications and can greatly improve the safety and reliability of power systems and communication systems.

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