2035-20-ALF

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Gas Discharge Tube Arresters (GDT) are devices that act as protective barriers to prevent the transmission of energy in order to protect a system or device from high voltage. The 2035-20-ALF application field and working principle of GDT’s can be divided into four main categories: absorption, clamping, low-ohmic and high-ohmic GDT’s.

Absorption GDT

An absorption GDT, also known as a full-wave GDT, provides the most direct and efficient protection from high voltage. It works by absorbing the incoming voltage into the GDT itself in order to prevent it from propagating to the system or device being protected.

An absorption GDT is typically used for high frequency AC power lines due to its ability to absorb high frequency AC voltage and convert it into thermal energy, thus dissipating it to the atmosphere. It consists of two electrodes, the primary electrode and the secondary electrode, which are separated by a thin dielectric material. When a high voltage surge appears on the primary electrode, it will create an electric field, which will cause the dielectric material to breakdown and allow current to flow between the two electrodes. During this process, the energy is absorbed through the dielectric material and converted into thermal energy, which is then dissipated.

Clamping GDT

A clamping GDT, also known as a half-wave GDT, operates by using a voltage limiting element to limit the output voltage. It is typically used to provide protection from high voltage DC or unidirectional AC power.

A clamping GDT consists of two electrodes – a primary electrode and a secondary electrode – as well as a voltage limiting element. When a high voltage surge appears on the primary electrode, a current will flow through the voltage limiting element, causing the output voltage to be limited. During this process, some of the energy is dissipated through the voltage limiting element, thus preventing it from propagating to the system or device being protected.

Low-Ohmic GDT

A low-ohmic GDT operates by increasing the impedance of the circuit. It is typically used to provide protection against low frequency, low voltage AC power.

A low-ohmic GDT consists of two electrodes – a primary electrode and a secondary electrode – as well as a low-ohmic resistor. When a low voltage surge appears on the primary electrode, it will cause current to flow through the low-ohmic resistor. During this process, some of the energy is dissipated through the resistor, thus preventing it from propagating to the system or device being protected.

High-Ohmic GDT

A high-ohmic GDT operates by increasing the impedance of the circuit. It is typically used to provide protection against high frequency, high voltage AC power.

A high-ohmic GDT consists of two electrodes – a primary electrode and a secondary electrode – as well as a high-ohmic resistor. When a high voltage surge appears on the primary electrode, it will cause current to flow through the high-ohmic resistor. During this process, some of the energy is dissipated through the resistor, thus preventing it from propagating to the system or device being protected.

The 2035-20-ALF application field and working principle of GDT’s can be used to provide protection for power systems, telecommunications networks, and other electrical and electronic devices from excessive voltage, thereby ensuring safe and reliable operation of these systems and devices. GDT’s are a proven and cost-effective solution for protecting vital infrastructure from damaging effects of overvoltage.

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