Ze/Xtom Overload Relays; Foreword; Device Overview - Eaton ZE serie Handbuch

1 ZE/XTOM overload relays

1.1 Foreword

1 ZE/XTOM overload relays
1.1 Foreword

1.2 Device overview

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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 protection "e". These measures
improve the degree of safety and prevent impermissible high temperature
and development of sparking and arcing, which is usually not found when
motors are operated under normal conditions. The motor-protective devices
for this that are themselves not located in the Ex e area must be certified by
an accredited certification body.
For for motors in explosive dust–air mixtures, standard EN 60079-14
specifies additional measures.
Directive 94/9/EC (ATEX 95) resp. 2014/34/EU on the approximation of the
laws of the Member States concerning devices and protective systems
intended for use in potentially explosive areas has been in force since
06.30.2003.
The ZE/XTOM motor protection system is approved in accordance with the
Directive 94/9/EC (ATEX 95) resp. 2014/34/EU.
￫
The EC Type Examination Certificate Number is:
PTB 10 ATEX 3014
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Figure 1: ZE/XTOM overload relay
a Setting dial for motor current
b OFF button, test
c Reset knob, reset lock-out
ZE/XTOM 11/17 MN03407003Z-DE/EN www.eaton.com