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

10/15 MN03402004Z-DE/EN

Foreword

5 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 61214 specifies additional measures.
Directive 94/9/EC (ATEX 100a) on the approximation of the
laws of the Member States concerning devices and protec-
tive systems intended for use in potentially explosive areas
has been in force since 30.06.2003.
PKE motor-protective circuit-breaker is PTB-approved
according to Directive 94/9/EC (ATEX 100a).
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.
The EU prototype test certification number is:
h
PTB 10 ATEX 3021.
37