2047-15-ALF

Series:	2047
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Voltage - DC Spark Over (Nom):	150V
Impulse Discharge Current (8/20µs):	40000A (40kA)
Tolerance:	±20%
Number of Poles:	2
Fail Short:	No
Mounting Type:	User Defined
Package / Case:	Cylinder No Lead

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Gas Discharge Tube Arresters (GDT)

Gas Discharge Tube Arresters (GDTs) are passive electrical devices which are commonly used to protect systems from transient surges of electric current on lines or grids. These devices possess a high power capacitance and contain a solid substance that breaks down when exposed to high electric voltages, thereby limiting the current and redirecting it. GDT Arresters have a cicular shape and are typically mounted on a bracket or pole.The 2047-15-ALF 12-kV GDT Arrester is a three-phase line-side, low-voltage, utility class, GDT typically used in an electrical power system’s protective switching device and limitation of power surge. The 2047-15-ALF is designed to withstand lightning pulses induced in the high voltage system and direct them to the ground safely. This three-phase GDT arrester is UL recognized and compliant with 2008 UL1449 3rd Edition Standards. It has the highest surge current capacity available among available arresters in this voltage class.The 2047-15-ALF 12-kV GDT Arrester consists of three SPDs, each with a common housing, ground clamp, lightning arrestor, surge current resistance element (discharge tube), and spark gap. Inside the housing, discharge tubes are arranged in parallel in each of the three separate channels. The discharge tube element of the arrester is made of a semiconductor material for high temperature characteristics. As the established voltage is reached by a transient surge, the charge passes through the discharge tube, reducing the voltage of the system and transferring the energy safely to ground.The 2047-15-ALF GDT Arrester comprises a three-phase surge currents divider. This device is used in applications where the current flow must be divided among the three line phases so that the proportion of catastrophic effects due to the surge across any single phase is minimized. The SPD is designed to induce a short-duration, high-magnitude impulse currents into the corresponding phase conductor, thereby limiting the maximum surge impulse voltage seen by the system. A lightning arrestor is included in the device to further reduce the surge voltage.Finally, the spark gap provides an additional layer of protection by providing the arrester with short circuit capabilities. This allows the spark gap to initiate a rapid arc path cutting off current flow and shunting it to ground. This spark gap has the ability to reset itself and reset the arrester after the surge has passed.In conclusion, the 2047-15-ALF 12-kV GDT Arrester is an important device that provides protection for electrical power systems from transient surges of electric current. With features such as a discharge tube element made of a semiconductor material, a three-phase spurge current divider, and a spark gap, the 2047-15-ALF provides the highest surge current capacity available among available arresters in this voltage class. It is UL recognized and compliant and is an effective way of directing potential surge energies to the ground safely for a broad-range of applications.

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