Gas discharge tubes (GDT) are crowbar devices that present a short circuit when activated. Typically two and three terminal gas discharge tubes (GDT) are used in telecommunication lines to protect twisted pair cables against lightning discharge currents. Activated by relatively low voltage levels, GDTs can conduct high impulse and power currents without suffering damage. Impulse life and discharge current tests are used to characterise GDTs. Typical GDT test are made using impulse currents of various waveshapes up to 10kA.
GDTs are crowbar devices presenting a near short circuit in conduction.Testing 2 terminal Gas Discharge Tube (GDT) components with high energy impulses is used to check the impulse current handling
MORE OPTIONS & COMFORT
Impulse generators cover the range 20 A for testing SPD devices up to 100 kA for testing high voltage varistors. Testing directly with AC power is possible with Coupling Decoupling Networks up to 1,200 Vac. All high voltage outputs can be covered with TC-ST test cabinet for personnel safety.
