Samson 3965 Mounting And Operating Instructions page 69

Physikalisch-Technische Bundesanstalt
Braunschweig and Berlin
Schedule to EC Type Examination Certificate PTB 11 ATEX 2021 X
(16) Assessment and Test Report PTB Ex 12-21283
(17) Special conditions
If the Type 3965-1131 PROFIBUS DPplus Solenoid Valve Island is to be used in haz-
ardous areas of zone 21, it must be mounted in an additional enclosure made of steel,
stainless steel or plastic. The enclosure with its connecting parts and entries must
comply with degree of protection IP 65 as stipulated in IEC 60529.
If the solenoid valve island is mounted in a plastic enclosure, the enclosure by Rittal
certified in PTB 03 ATEX 1011 U must be used. Enclosures by other manufacturers
can be used provided these enclosures, their connecting parts and entries comply with
type of protection Increased Safety.
(18) Essential health and safety requirements
Compliance with the essential health and safety requirements has been assured by
compliance with the standards mentioned above.
Certification Sector for Explosion Protection
O/o
[Signature Klausmeyer, round stamp with federal eagle logo and Physikalisch Technische
Bundesanstalt 56 lettering]
Dr.-Ing. U. Klausmeyer
Director and Professor
This EC type examination certificate may only be reproduced without changes.
Excerpts or modifications are to be approved by Physikalisch-Technische Bundesanstalt.
Physikalisch-Technische Bundesanstalt · Bundesallee 100 · 38116 Braunschweig · Germany
EB 3965 EN
[translation of German original]
EC type examination certificates without signature nor seal are invalid.
The relation between explosion group and ex-
ternal reactances is shown in the table:
IIC
L 5 mH
o
C 650 nF
o
Braunschweig, 1 August 2012
[PTB lettering]
IIB
5 mH
3.7 µF
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