PMT823014F

Series:	PMT8
Packaging:	Tray
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Voltage - DC Spark Over (Nom):	230V
Impulse Discharge Current (8/20µs):	20000A (20kA)
Tolerance:	--
Number of Poles:	3
Fail Short:	Yes
Mounting Type:	Through Hole
Package / Case:	Axial Cylinder, 3 Lead (T-Shape)

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Gas Discharge Tube Arresters (GDT), also known as spark gaps, are electrical components that protect both users and equipment from potential electrical surges caused by lightning strikes, power line crosses or any other electrical phenomena. They work by providing a path for the electrical current to be safely discharged in a controlled manner, thus avoiding the risk of electrical damage to both the user and surrounding equipment.PMT823014Fis an example of a GDT designed by the firm PMT Corporation. Specifically, the PMT823014F is a three-phase lightning arrester, designed to protect the three phases of an electrical signal from potential surges. The device consists of a ceramic body with a spark gap, fitted with an expandable insulation backing, and a lead-dipole form of over-voltage protection.The spark gap is the most important part of the PMT823014F GDT because it is where the current is diverted from the line. It works by allowing a fast spark, which breaks down the air insulation between two electrodes, to pass through and break the current. This causes the surge to be redirected away from the cable and into a device designed to safely absorb the energy.The device is comprised of three electrodes: two which form the spark gap, and one which is the return electrode. The spark gap allows for a controlled opening and closure of the arc by providing a path for the current. The return electrode acts as the common point for the other two and helps ensure even distribution of the current.The PMT823014F GDT has been developed to provide effective protection by limiting the level of surge current flowing through the system, whilst still permitting its efficient operation. The device is especially suitable for protection against medium-voltage power systems, such as those typically used in commercial lighting and industrial applications. It is rated for up to 15 kV with a maximum of 145 kV.The GDT works by constantly monitoring the power supply line to detect when voltage begins to rise. As the voltage rises, compound insulation and an arc break located between the central electrodes start to break down, forming a spark gap and diverting the energy safely away from the power cable. This spark gap then closes, preventing any additional voltage from flowing through the system.One of the primary benefits of the PMT823014F GDT is that it provides protection against high-voltage surges, whilst still permitting normal operation. This makes it particularly suitable for applications prone to power surges, such as commercial and industrial applications. It also offers high-voltage protection with minimum loss in performance, thanks to the compound insulation and arc break circuit.In conclusion, Gas Discharge Tube Arresters (GDT) are an essential component of protecting electrical systems from potential surges caused by any electrical phenomenon. The PMT823014F is an example of a high-performance GDT, designed to protect three-phase systems up to 15 kV. It works by providing a spark gap which breaks down the air insulation between two electrodes, providing a controlled path for the current to be discharged safely. This makes it suitable for use in applications prone to power surges, such as commercial or industrial lighting, as it offers reliable and efficient protection.

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