tw GDT glossary

Gas Discharge Tube:
Glossary
Glossary
 DC spark-over voltage
It is the static behavior of GDT. DC spark-over voltage is measured with 100V/s low voltage rate which ignites the GDT.
 Max. Impulse breakdown voltage
It is the dynamic behavior of GDT. Impulse breakdown voltage is measured with dv/dt=100V/μs and 1KV/μs voltage rate
which ignites the GDT.
 Max. Impulse discharge current
The maximum peak current defined at 8/20s current pulse which is allowed to be applied at least ten times without
causing DC spark-over voltage change more than a specific rate.
 Impulse Life
The minimum number of 10/1000s (or 8/20s) current waveform impulse which is allowed to be applied without causing
DC spark-over voltage change more than a specific rate.
 Nominal Alternating discharge current
The rated rms value of AC current flows through the GDT which tests at 50Hz, 1sec.
 DC holdover voltage
This value is defined as the maximum DC voltage across the terminals of GDT which is expected to return its high
impedance state after the GDT breakdown.
 Insulation Resistance
Insulation resistance value measures on the GDT's terminals under the specified DC voltage.
 Capacitance
The capacitance of the GDT is measured at 1MHz.
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specification are subject to change without notice
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www.thinking.com.tw
2014.08