CG690SM

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Gas Discharge Tube Arresters (GDT) are a type of protective device that allows electrical equipment to withstand the impact of high voltage surges. The device works by limiting the surge voltage so it doesn\'t cause permanent damage to the equipment. GDTs are used in all types of electrical applications, from industrial to consumer applications. The GDT most popularly used is the CG690SM.

The CG690SM is a high voltage limiter that has been designed as an extremely low-resistance device. It is designed to provide sustained high voltage protection and maximum life expectancy with minimal energy loss. The device is constructed from two discs of special metal, each containing a series of parallel arcs consisting of tin plated copper wires, spaced at regular intervals. The wires are then placed in contact with each other, forming an adjustable volume that is filled with a fluid gas mixture. When the voltage reaches a certain level, an arc occurs between the two discs, dissipating the excess voltage, thereby limiting the surge.

The CG690SM is typically used in applications where there is a high level of overvoltage. These can include motor control systems, communications networks, and emergency lighting systems. It is important to note that the device can only limit the amount of voltage that is transferred. It cannot block or reduce the energy delivered to the equipment, so it is important to use the device in conjunction with other surge protection solutions. The GDT should be placed at the end of the surge protection chain, to ensure that all overvoltages are limited.

The working principle of the CG690SM is quite simple. When an overvoltage condition occurs, a spark will occur between the two discs. This spark will then dissipate the excess voltage, preventing the voltage from reaching the equipment. The device will also limit the current to a safe level, enabling the equipment to function without experiencing any permanent damage. The design of the device also allows it to be easily reset and reused if needed.

The CG690SM is one of the most reliable GDTs on the market and is well suited for a number of applications. It is especially useful for applications that involve power surges, as it can effectively limit the amount of voltage that is transferred to the equipment. It is also very cost effective, making it a popular choice for many businesses and homes. As with any type of surge protection device, it is important to read the manufacturer\'s instructions carefully and to select the correct size for the application.

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