CG31.1L

Gas Discharge Tube Arresters (GDT) are devices designed to protect electrical components from voltage surges and transient discharges in a circuit. They work by releasing any stored electrical energy to the ground or another suitable earth point. The specific type of GDT that this article will examine is the CG31.1L.

The CG31.1L is designed to be an all-purpose linear GDT. It is particularly useful for protecting sensitive electrical components from high voltage transients created by lightning strikes. It can be used in high voltage and low frequency single phase and three phase power distribution systems. It can also be used for other applications such as telephone, cable TV, and LAN networks.

The primary application of the CG31.1L is to provide protection for equipment against transient surges. This is achieved by the device absorbing energy from transients and releasing it safely to ground. Generally, this occurs in a few nanoseconds, providing a fast response and excellent protection. This same action is also effective in providing protection against line defects such as wire leakage and insulation breakdowns.

The CG31.1L features an internal structure made up of two parts: an igniter and a linear resistor. When a transient surge hits the GDT, it triggers the igniter, which in turn provides the energy that is then safely released to ground. This helps to protect the equipment from the surges and potentially damaging effects of transient discharges. The linear resistor helps to limit the flow of current across the GDT and reduce the possibility of damage.

Another feature of the CG31.1L is its ability to withstand higher voltages up to 5 to 10 kV. This capability is due to the increased internal capacitance and the high pulse rate that allow the device to respond quickly and effectively. While traditional GDTs can only provide protection up to voltages of 5 kV, the CG31.1L can protect up to 10 kV.

CG31.1L GDTs are an important tool for efficiently protecting electrical components. They are an effective and reliable form of lightning protection and can help extend the life of certain sensitive equipment. The device is relatively easy to install and requires minimal maintenance.