Siemens SENTRON 3VL series, System Manual

Page: 340 / 360

ESD guidelines
A.1 ESD Directive
3VL molded-case circuit breakers
340
System Manual, 03/2009, 110 0110 - 02 DS 01
Handling ESD modules
The following applies: Only touch ESD components if unavoidable due to necessary tasks.
Only touch the components when the following holds true:
●
You are permanently grounded by means of an ESD armband.
● You are wearing ESD shoes or ESD shoes grounding protective strips in connection with
ESD floors.
Before you touch an electronic assembly, your body must be discharged. To do this, touch a
conductive, grounded object, e.g., a bare metal part of a switch cabinet or the water pipe,
immediately before touching the electronic assembly.
Do not allow chargeable, highly insulated materials, e.g. plastic films, insulating tabletops,
synthetic clothing fibers, to come into contact with ESD components.
Place ESD components only on conductive surfaces (work surfaces with ESD surface,
conductive ESD foam, ESD packing bag, ESD transport container).
Do not expose ESD components to visual display units, monitors or televisions. Maintain a
distance of at least 10 cm to screens.
Handle flat components only by their edges. Do not touch component connectors or
conductors. This prevents charges from reaching and damaging sensitive components.
Measuring and modifying ESD components
Measure the ESD component under the following conditions only:
●
The measuring device is grounded with a protective conductor, for example.
● The probe on the potential-free measuring device has been discharged, e.g. by touching
the bare metal of a part of the switch cabinet.
● Your body is discharged. Do so by touching grounded metallic parts.
Solder only with grounded soldering irons.
Shipping ESD modules
Always store or ship ESD components in conductive packaging, e.g. metallized plastic boxes
or metal cans. Leave the components and parts in their packaging until installation.
If the packaging is not conductive, wrap the ESD component in a conductive material, e.g.
rubber foam, ESD bag, household aluminum foil, or paper, before packing. Do not wrap the
ESD component in plastic bags or plastic film.
In ESD components containing installed batteries, make sure that the conductive packaging
does not touch the battery connectors or short circuit. Insulate the connectors with suitable
material.