Solution for Electrical torque driver issue

ESD Control Program Auditing
#1

Hello All Experts,

We are following the ESD S13.1 standard for electrical torque drivers in which <2 ohms for qualification and <10ohms for compliance verification.

Currently we are using electrical torque drivers of KILEWS, DELVO & DESOUTTER make.

However, during the internal audits it is frequently observed that the torque driver resistance reading goes above 10 ohms after regular usage.

So, please review this issue and support us with any possible solution to comply torque driver requirement at all the times.

Thanks in advance.

#2

Rahul,

I’m sure you know that ESD SP13.1 is for solder irons. Although there is no specific ESDA document for tools like your torque driver, ESD SP13.1 is the closest thing, so many people use that document. In the case of the solder iron, the tip should be connected to ground with no moving parts in between. In your case of a torque driver, I could see some resistance building up between the moving parts and thus get a resistance to ground > 10 ohms.

Some may use a torque driver with a dissipative tip which would have a resistance to ground > 10^6 ohms, which would be acceptable. If you are only using conductive tips, I would set your compliance verification limit to something achievable, perhaps 100 or 1000 ohms so in case something changes within a certain torque driver that would be unexpected, you would be aware of it and possibly take some action.