'操作说明 Hotflow THREE_26_zh.pdf - 第425页
ESD -Certificate Ersa GmbH, Leonha rd-Karl-Str. 24, 9787 7 WERTHEIM page 2 of 6 ESD Testing Hotflow THREE series Date: 14 .09.20 21 Customer data: ERSA GmbH Leonhard.Karl-Str. 24 978 77 Werthei m System Hotflow THREE ser…
ESD-Certificate
Ersa GmbH, Leonhard-Karl-Str. 24, 97877 WERTHEIM
page 1 of 6
ESD-Certificate
ESD
ESD – protective measures
refering IEC 61340-5-1
company:
ERSA GmbH
system:
Hotflow THREE series
completed on
14.09.2021
by
Lothar Schwab (ESD-specialist)
ESD-Certificate
Ersa GmbH, Leonhard-Karl-Str. 24, 97877 WERTHEIM
page 2 of 6
ESD Testing
Hotflow THREE series
Date: 14.09.2021
Customer data:
ERSA GmbH
Leonhard.Karl-Str. 24
97877 Wertheim
System
Hotflow THREE series
ESD-Specialist
Lothar Schwab, ERSA GmbH
Other participants / contact person:
Protective measures and operation for ESD components and Systems / Machines referring to IEC
61340-5-1
Status key
meets standard
major deviation
minor deviation
Not relevant
OK
A1
A2
NR
Object
reference in
IEC 61340-5-1
Status-
key
hint
tools and machines
5.2.10
OK
grounding, ground cable
5.3
OK
electrostatic fields
5.35
OK
ESD-Certificate
Ersa GmbH, Leonhard-Karl-Str. 24, 97877 WERTHEIM
page 3 of 6
1.1 Declaration and normative guidelines:
Tools: Hand pieces or coating, holders and fixing elements, trays,
attachments, and others need to be produced out of materials with a
R
O
/R
A
– resistance between 10
4
and 10
8
Ohms.
Elements of machines and systems directly in contact with conductive
parts of components or assemblies must consist of electrostatic
discharging material (R
O
/R
A
10
4
– 10
8
Ohm) and have a direct connection
to the Earth Bonding Point.
1.2 Humidity
humidity is influencing the conductivity of many materials. Beginning
with an air humidity <40%rh the tendency of material surface charging is
rising. At the same time the surface conductivity is decreasing. In
consequence high electrostatic potentials can built up. Without air
condition systems with humidity control the air humidity in heated
production areas can drop below 20%rh!
High ohmic measures will be affected to smaller values when the air
humidity is rising above 60%rh.
EN 61340-5-2 recommends in 1.5 values >40%rh and
EN 61340-5-2 appendix B1.2 requests an environment during
measurement (mainly laboratoy measures) of 50+-3%rh, but also reviews
to practical measurement situations:
Temperature and relative humidity need to be noted:
humidity: 41 %rh
temperature: + 20 °C