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Electronics => Projects, Designs, and Technical Stuff => Topic started by: Mugiwara303 on March 27, 2022, 03:09:18 pm

Title: Underground cable fault locator thumpers
Post by: Mugiwara303 on March 27, 2022, 03:09:18 pm

Hi everyone,
I need some help with surge generators "thumpers" that are used to locate faults in underground cables, especially the receiver like digiphone+2, how does it detects the surge pulse is it acoustic or electromagnetic, and how it's detecting only the surge pulse sound, I couldn't find any information online 

Title: Re: Underground cable fault locator thumpers
Post by: Terry Bites on March 27, 2022, 04:53:59 pm

Thumping sounds like a gunshot at the sending send! Its looking for insulation failures where the thump, a high energy discharge, induces an accoustic and EM wave at the flashover point.
the detector is both a radio reciever of sorts and an siesmophone. Its not fantastically accurate and TDM will be used to try and pinpoint the failure.

Title: Re: Underground cable fault locator thumpers
Post by: Mugiwara303 on March 29, 2022, 11:56:55 am

Thank you