gavin23
Junior Member level 3
Hello:
I've received back some units from the field that appear to have suffered huge surge currents (enough to burn traces of the PCB). There is a Gas Discharge Tube (GDT) on the unit for surge protection but it looks like it wasn't enough. The datasheet is attached, I have the 2026-23 version (230V).
My guesses are these:
1/ There were numerous surges, beyond what the GDT was rated for. As a result it failed and the next surge damaged the device.
2/ There was a massive surge that surpassed the maximum ratings of the GDT causing arcing and thus damage to the board.
I'm interested to know if the GDT is damaged. I'm going to test the GDT using a DC HiPot tester.
Any thoughts?
Thanks,
Gavin
I've received back some units from the field that appear to have suffered huge surge currents (enough to burn traces of the PCB). There is a Gas Discharge Tube (GDT) on the unit for surge protection but it looks like it wasn't enough. The datasheet is attached, I have the 2026-23 version (230V).
My guesses are these:
1/ There were numerous surges, beyond what the GDT was rated for. As a result it failed and the next surge damaged the device.
2/ There was a massive surge that surpassed the maximum ratings of the GDT causing arcing and thus damage to the board.
I'm interested to know if the GDT is damaged. I'm going to test the GDT using a DC HiPot tester.
Any thoughts?
Thanks,
Gavin