Hi group

For those of you unfamiliar with ISO TR 10605, it is the ESD 
test standard for automotive electronics (8kV contact, 25kV
air).

I am trying to perform quick ESD tests on a product which has
bottom entry proprietary cable. Picture if you an upside-down 
bottle of coke with push buttons at the top and cable entry at
the bottom end.

The cable itself is screened multicore with a molded end connector
so there is a minimum length it must protrude from the product before
it even thinks about bending. This is about an inch and a half 
(about 40mm).

According to ISO TR 10605, if insulation is required under the
EUT, the insulation must support the EUT some 25mm above
the ground plane.

Question 1: Does this insulation have to be 25mm thick or can 
I make a table like structure with thinner insulating sheet and 
supporting pillars at the corners?

Question 2: Would a more 'compliant' test set-up have the bottle
of coke lying on its side rather than standing vertically as it would
in practice?

The setup for the ESD test shows a ground strap connect the plane
to a grounding rod. We had a specialised ESD test area where I worked 
before but we took everything for granted and didn't really bother finding
out where or how the ground connection was made!

Question 3: Can I connect the ground strap via say a UK 3-pin plug 
(with live and neutral prongs removed) into a mains socket or is this
asking for trouble (RCD's etc).

Grateful for any advice

Regards

- Chris Chileshe


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