Motor-Protective Circuit-Breaker Pke12, Pke32 And Pke65; Foreword - Eaton PKE12 Handbuch

1 Motor-protective circuit-breaker PKE12, PKE32 and PKE65

1.1 Foreword

1 Motor-protective circuit-breaker PKE12, PKE32 and PKE65
In addition to the regulations in accordance with EN 60079-14 and VDE 0165
Part 1, separate regulations for the corresponding types of protection apply
to the protection of motors in potentially explosive atmospheres.
The standard EN 60079-7 requires additional measures for motors with
ignition protection type "e" "Increased Safety". 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 motors in explosive dust-air mixtures, standard EN 60079-14 specifies
additional measures.
Directive 94/9/EG (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
30.06.2003.
PKE motor-protective circuit-breaker is approved according to
Directive 94/9/EG (ATEX 95) resp. 2014/34/EU.
The following standards were used for aspects related to functional safety:
• Risk analysis of hazards, hazardous situations, and hazardous events as
per EN ISO 14121
• SIL determined based on the risk graphs in IEC 61508
• Documentation of the implementation of measures against systematic
faults as per IEC 61511.
￫
Number of the EU Certificate of Compliance:
PTB 10 ATEX 3021.
PKE12, PKE32, PKE65 11/17 MN03402004Z-DE/EN www.eaton.com
1.1 Foreword
29