Bender EDS3090, Manual

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Table of Contents
EDS309x_D00012_03_M_XXEN/11.2014
1. How to get the most out of this manual ............................................................. 7
1.1 How to use this manual ......................................................................................................... 7
1.2 Explanations of symbols and notes ................................................................................... 7
1.3 Overview of chapters .............................................................................................................. 8
2. Safety instructions .................................................................................................. 9
2.1 Intended use .............................................................................................................................. 9
2.2 Device-specific safety instructions .................................................................................... 9
2.3 General safety instructions ................................................................................................ 10
2.4 Qualified personnel .............................................................................................................. 10
3. System description .............................................................................................. 11
3.1 System components ............................................................................................................ 11
3.1.1 Overview of system components ................................................................................... 11
3.1.2 Insulation fault location equipment type list ............................................................. 12
3.1.3 Accessories .............................................................................................................................. 13
3.2 Function of the system components ............................................................................. 14
3.2.1 Locating current injector PGH18… ................................................................................ 14
3.2.2 Insulation fault locator EDS195P ..................................................................................... 14
3.2.3 Measuring clamps ................................................................................................................. 14
3.2.4 Coupling device AGE185 .................................................................................................... 15
3.3 Operating principle for insulation fault location (IΔL) ............................................. 15
3.3.1 Schematic diagram EDS system ...................................................................................... 16
3.3.2 Test cycle .................................................................................................................................. 16
3.3.3 Definitions ............................................................................................................................... 17
3.3.4 Currents in the EDS system ............................................................................................... 17
3.4 Operating principle for residual current measurement (IΔn) ............................... 18
4. Considerations prior to use ................................................................................ 19
4.1 How does the equipment for insulation fault location work ................................ 19
4.2 Requirements for reliable insulation fault location .................................................. 20
4.3 Reduced locating current .................................................................................................. 22
4.4 Response sensitivity characteristics of the EDS195P ............................................... 22
4.4.1 Response characteristics for main circuits in 3AC systems .................................... 23