Eaton MTL7700 Instruction Manual

Contents

iiiINM 7700 R ev 12DECLARATION OF CONFORMITY IINOTE IIATEX SAFETY INSTRUCTIONS IV1 OVERVIEW 12 DESCRIPTION 12 1 Introduction 12 2 MTL7700 range – barrier ranges 12 3 MTL7700 range – accessories 23 SAFETY CONSIDERATIONS 33 1 General requirements 33 2 Safety checks 34 INSTALLATION 34 1 General 34 2 Mounting/removing barriers 34 3 Installing accessories 35 WIRING CONNECTIONS 75 1 General 75 2 Barrier connections 75 3 Connections to plant earth 75 4 Connections to dummy barriers 96 MAINTENANCE 96 1 General 96 2 Routine inspection 97 FAULT-FINDING 107 1 Introduction 107 2 Power supply check 117 3 Barrier resistance test 118 EQUIPMENT AND BARRIER TESTS 118 1 Thermocouple and RTD tests 118 2 Barrier tests 118 3 Tests for Active Barriers 128 4 Test tables for passive barriers 149 APPENDIX A: TYPICAL WIRING CONNECTIONS FOR SPECIFIC APPLICATIONS 1710 APPENDIX B:Table A - Safety Descriptions 19Table B - Maximum Cable Parameters - IIC Gas Group 19Table C - Maximum Cable Parameters - IIB Gas Group 19CONTENTS PAGEiii