PMT809060

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Gas discharge tube arresters (GDT) are protective devices designed to prevent damage caused by transient overvoltages by providing a path to ground for such excess electrical energy. PMT809060 GDTs are lightning arrester optimized for protecting outdoor equipment from transient over voltages on medium to high voltage power lines.

PMT809060 application fields include:

• Communication, TV, and Wireless transmission equipment.
• Railway equipment.
• Airport equipment.
• Street lights.
• Switchgear and power distribution equipment.
• Building safety systems.
• Power supply and electric network.

The GDT works on a gas discharge principle. It consists of two electrodes separated by an insulating material. In low voltage and normal operating conditions, the gap between the electrodes is so small that current cannot flow. In the event of a voltage surge, the voltage across the two electrodes break down the insulation, resulting in the firing of a spark across the electrodes that is strong enough to extinguish the dangerous surge.

When normal voltage is resumed, the internal resistance of the GDT drops and it recovers to its original, non-conducting state. By attenuating the peak voltage and suppressing impulses, the GDT prevents sensitive equipment from receiving more voltage than it can handle, thus protecting it from damage.

PMT809060 is a dual-gap GDT featuring two spark gaps in series. This design allows it to suppress both fast and slow front transients. The first spark gap has a low threshold voltage and is designed to act on fast leading-edge transients. The second spark gap has a higher threshold voltage and is designed to suppress slowly rising transients. This combination allows the device to handle a wide range of voltages, ranging from 5 to 36 kV.

As a result, the PMT809060 GDT helps protect sensitive equipment against damaging transients while blocking any low-level interference during service. Since it is designed to withstand even the most extreme voltages, the PMT809060 is an ideal solution for applications that require the highest levels of lightning protection.

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