PMT3(310)35004F Circuit Protection

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Gas Discharge Tube Arresters (GDT)

A Gas Discharge Tube Arrester (GDT) is an electrical safety device designed to limit the surge voltage applied to a protected circuit. GDTs are commonly referred to as surge arresters, surge protectors, or surge limiters. They are designed to be connected to the protected circuit before ultra-high voltage (UHV) surges reach the protected equipment.

PMT3(310)35004F is one type of GDT. This type of arrester is applicable for extra high voltage (EHV) voltage surges. It is a single-stage, four-port, gas discharge tube arrester that can provide surge protection at up to 310kV. It is designed to provide robust protection in both symmetrical and asymmetrical applications.

Application Field

PMT3(310)35004F GDT is typically used in transmission and distribution systems for EHV level power plants, substations, and energy storage systems. It is useful for providing surge protection for ultra-high-voltage applications that need high withstand ratings. Additionally, due to its four-port structure, it is also suitable for hybrid applications.

Working Principle

The working principle of a GDT is based on a gas discharge mechanism. When a voltage spike beyond a certain level is applied to the arrester, the gas inside starts to discharge. This creates an electrical breakdown between the electrodes connected to the surge arrester, thus limiting the voltage on the protected circuit. The voltage on the protected side will remain at a safe safe level until the surge event has passed, at which point the gas will cease to conduct electricity.

The PMT3(310)35004F GDT is designed to provide superior protection in extreme applications where voltage spikes may reach up to 310kV. It features a four-port design with four gas discharge tubes arranged in an anti-parallel configuration. The four-port design allows for efficient distribution of the surge voltage, making it suitable for hybrid applications. The four discharge tubes are especially designed to ensure a fast response to voltage spikes and a long-term operational stability.

Conclusion

In conclusion, the PMT3(310)35004F Gas Discharge Tube Arrester is a single-stage, four-port GDT suitable for extremely high voltage surge protection. Its four-port design ensures an efficient distribution of the surge voltage, making it ideal for hybrid applications. Thanks to its four, specially designed discharge tubes, it can provide superior protection against extreme voltage spikes of up to 310kV.

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