ELECTRONIC EARTHING SYSTEM

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Italy

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Original

Electronic earthing system
resistance and capacity type DMT2B

Type of protection: II 2 GD - EEx d [ ia] IIB
Class of temperature: T6 / ° 65C
Protection degree: IP 65
Certificate: INERIS 01 ATEX 0025
Description:
DMT 2B is composed by an electronic device resistance/
capacity type and by an earthing clamp complete with 8m of
cable to measure and check the continuity towards the earth
with the aim to eliminate the electrostatic charges. The
allowing and the real earthing of the connected lump, happen
only if the object connected to the clamp has both resistance
and capacity towards the earth over predetermined values.
Checking these controls, the DMT2B system avoids to give
the consent if the clamp is connected to lumps already
connected to earth ( resistance towards low earth) or to small
size conductivity lumps ( capacity towards low earth) .
It is possible to select the way of working only for resistance
or the threshold capacity value for the consent, by jumpers
placed on the electronic card. It is also possible to set the
system to ignore the minimum threshold of the resistance to
be measured; so it is possible to give the consent also in case
the connected object is already connected to earth ( for
example in case of railway trucks) . The outgoing towards the
clamp is intrinsically safe.
Alimentazione 230V – 50Hz
Materials:
External enclosure: body and cover in aluminium alloy.
Screws: stainless steel.
Cable: 8m 3x3 mm2 hydrocarbon resistant.
Silicone grease for IP65.
Cables entry:
N° 3 entries  3/ 4� UNI 6125 ( ISO 7/ 1) .
Inhibiting treatments:
External and internal standard grey powder epoxy painting,
like RAL 7005.
Application:
The electronic earthing system DMT 2B is used during filling
and emptying operations of tanker lorries, drums, railway
trucks.
On request:
Supply 110V - 50Hz.
Version with 20m of cable.
Version for maximum ambient temperature + 50 ° C.

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