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09/15 MN03407005Z-DE/EN
1
ZB65-.../XTOB…DC1 and
ZB150-.../XTOB…GC1
overload relays
Foreword
In addition to the degree of protection specified in the
standards EN 60079-14 and VDE 0165 Part 1, further
provisions have been made to ensure safety from ignition for
motors operated in potentially explosive atmospheres.
EN 60079-7 prescribes additional measures to be taken for
the operation motors with “increased safety” type of protec-
tion “e”. These measures provide a higher degree of safety
and prevent impermissible high temperature and develop-
ment of sparking and arcing on the motors, which usually
does not occur under normal operating conditions.
The motor-protective devices for this that are themselves
not located in the Ex e area must be certified by an accred-
ited certification body.
For for motors in explosive dust-air mixtures, standard
EN 60079-14 specifies additional measures.
The guidelines on the application of Directive 94/9/EC
(ATEX 100a) on the approximation of the laws of the
Member States concerning equipment and protective
systems intended for use in potentially explosive atmo-
spheres will be enforced as of 06.30.2003.
The ZB65-.../XTOB…DC1 and ZB150-.../XTOB…GC1
overload relays are certified by PTB according to the
94/9/EC (ATEX 100a) Directives.
The EU prototype test certification number is:
PTB 10 ATEX 3010.
The following overload relays have no ATEX approval:
• ZB65-75/XTOB075DC1,
• ZB150-175/XTOB175GC1,
• ZB150-175KK/XTOB175GC1S.
Содержание ZB65 Series
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