Gas Discharge Tube

The Gaz Discharge Tubes (GDT) are passive components made of two or three electrodes in an enclosure filled with a rare gas (no radioactive) at a controlled pressure. They protect equipment from transient overvoltages. The main use is to protect telecommunication lines, however CITEL has developed proprietary technologies that are used in many other applications such as the protection of AC network (see bellow GSG products).

The gas discharge tube is an electrical component at the heart of CITEL's know-how.Indeed, CITEL is one of the rare surge protector manufacturer to produce its own component GDT. GDTs are present in the neutral modules of CITEL surge protectors as well as in the specific VG diagrams (see VG technology).

CITEL offers complete ranges of gas spark gaps to meet all your needs:

Isolating spark gap

These spark gaps are designed to protect metallic elements, like antennas, poles, pipes, and roofing equipment which are not connected to earth or a Lightning Protection System against the risk of a flashover during a lightning strike.

2-electrode

2-electrode GDT These products are intended for the protection of telecommunications or dataline equipment. The Maximum impulse sparkover voltage of the products are 90 to 3500 V. These products are available in version: through hole and surface mounting. The Safety Disconnect (FL) option is offered.

3-electrode

3-electrode GDT. These products are intended for the protection of telecommunications or dataline equipment. The Maximum impulse sparkover voltage of the products are 90 to 700 V. These products are available in version: through hole and surface mounting. The Safety Disconnect (FL) option is offered.

GSG

Based on CITEL's experience and knowledge in the field of gas dischage tubes, CITEL has developed a specific technology: GSG (Gas-filled Spark Gap). These components are specifically designed to be used on AC or DC power networks. The GSG product has an optimized extinction capability and a higher current discharge capability with either a 8/20µs or 10/350µs waveform.