Eaton ZE serie Handbuch Seite 25

Contents
0 About this manual ..................................................................... 23
0.1 Target group................................................................................. 23
0.2 List of revisions ............................................................................ 23
0.3 Abbreviations and symbols .......................................................... 24
0.4 Writing conventions ..................................................................... 25
0.4.1 Hazard warnings of material damages ......................................... 25
0.4.2 Hazard warnings of personal injury .............................................. 25
0.4.3 Tips............................................................................................... 25
1 ZE/XTOM overload relays ......................................................... 26
1.1 Foreword...................................................................................... 26
1.2 Device overview........................................................................... 26
1.3 Description of device ................................................................... 27
1.3.1 Overload protection relays with bimetallic release ...................... 27
1.3.2 Current ranges for ZE/XTOM relays ............................................. 28
1.3.3 Temperature compensation ......................................................... 28
1.3.4 Phase failure................................................................................. 28
1.3.5 Re-closing..................................................................................... 29
1.3.6 Test function ................................................................................ 30
1.3.7 Safety analysis ............................................................................. 30
2 Engineering................................................................................. 31
2.1 Overload monitoring of motors in the Ex e area .......................... 31
2.2 Setup of the overcurrent protection system ................................ 31
2.3 Short-circuit protection of the overload relay ............................... 33
2.4 Approvals ..................................................................................... 34
3 Installation .................................................................................. 35
3.1 Installation instructions ................................................................ 35
3.2 Fitting the device.......................................................................... 36
4 Using the device......................................................................... 38
4.1 Settings ........................................................................................ 38
4.1.1 Reset............................................................................................ 38
4.1.2 Test .............................................................................................. 38
ZE/XTOM 11/17 MN03407003Z-DE/EN www.eaton.com
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