CG7400MS Circuit Protection

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Gas Discharge Tube Arresters (GDT) are electrical protection devices used to control or prevent the flow of excessive electricity in a system. They are designed to safely dissipate excess electric energy in order to protect other components in the system. GDTs can also be used as isolators to separate two circuits or components within a system.

The CG7400MS arrester is a GDT specifically designed for medium voltage applications, such as those found in power distribution networks and telecommunications networks. The arrester is a single phase unit with a maximum continuous operating voltage of 20 kV, a short-circuit current rating (Ik) of up to 200 A, and a maximum discharge current (Imax) of up to 10 kA.

The CG7400MS arrester is designed to protect the system from the damaging effects of overvoltage caused by lightning, switching surges, and generator back-feed. To do this, the arrester contains a metal oxide surge arrester “SPD” element that works by passing the excess voltage surge down the arrester’s body while limiting the arrester’s current rating accordingly. The arrester acts as an overload protection device, limiting the amount of current that can pass through the arrester and thus protecting the system.

The CG7400MS arrester is also designed to be resistant to the effects of aging due to temperature and humidity, and it is able to protect systems in a wide range of environmental conditions. It is also designed to provide protection from overvoltage and overcurrent for a long time without having to be replaced, meaning that the cost of ownership is kept low.

The arrester can offer a number of additional features, such as built-in monitoring that alerts operators when the arrester needs to be replaced, and a steady-state preset current that helps to ensure that the arrester is operating within its specified limits. It can also be easily installed into existing systems, as it is fully compatible with a variety of other electrical protection devices.

In summary, the CG7400MS arrester is a reliable and cost-effective GDT that can be used to protect medium voltage systems from overvoltage and overcurrent. It is designed for easy installation and offers additional features that make it a great choice for operators who want to keep their systems safe and running smoothly.

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