Atec Noiseken-ESS-2000 - Manual (Page 11)

Electrostatic Discharge Simulator
10
IEC61000-4-2 Standard
■ TEST SET-UP
● Ground reference plane: A copper or aluminum sheet of
0.25 mm minimum thickness: other materials may be used
but they shall have at least 0.65 mm minimum thickness.
The minimum size is 1 m
2 . The exact size depends on the
EUT. It shall project beyond the EUT or coupling plane
by at least 0.5 m on all sides. It shall be connected to the
protective earth.
● Coupling planes: These planes shall be constructed from
the same material and thickness as that of the ground
reference plane and shall be connected to the ground
reference plane via a cable with a 470kΩ resistor located at
each end.
Typical position for
direct application
● Test set-up for test performed in laboratories:
A ground reference plane shall be provided on the fl oor of
the laboratory.
The EUT shall be connected to the grounding system
and arranged and connected according to its installation
specifi cations. A distance of 1 m minimum shall be provided
between the EUT and any metallic structure.
The discharge return cable of the test generator shall
be connected to the ground reference plane, and this
connection shall be of low impedance.
In cases where the length of the cable exceeds the length
necessary to apply the discharges to the selected points,
the excess length shall be placed non-inductively off the
ground reference plane and shall not come closer than 0.2
m to other conductive parts in the test set-up.
■ TEST SET-UP EXAMPLE
● Table top equipment
0.1m
Typical position for indirect
discharge to HCP
Isolation tranformer
ESD simulator
Typical position for
indirect discharge to VCP
Vertical Coupling Plane
(0.5m x 0.5m)
470kΩ resistor
Wooden table
Ground reference plane
Insulation sheet
Horizontal coupling plane
Test set-up for table-top equipment, laboratory tests
● Floor-standing equipment
EUT
0.1m
0.8m
EUT
Typical position for
indirect discharge to VCP
Isolation tranformer
ESD simulator
Vertical Coupling Plane
(0.5m x 0.5m)
470kΩ resistor Insulation pallet
(h=0.1m)
Typical position for
direct application
Ground reference plane
ESD simulator
0.1m
0.1m
A wooden table of 0.8m height shall be set on the
ground plane. 1.6m x 0.8 m horizontal and 0.5m x
0.5 m vertical coupling planes shall be put on the
table. An insulating support of 0.5 mm thickness
shall be inserted between the EUT/cables and the
horizontal coupling plane.
An insulation support of 0.1m thickness shall be
used. 0.5m x 0.5m vertical coupling plane shall be
used for indirect application of discharges.