Megger KMK 8 - Table of Contents

CONTENTS
1
INTRODUCTION ....................................................................... 1-1
1.1 Application ................................................................................. 1-1
1.2 Application Guide for Fault Location .......................................... 1-4
1.2.1 Active Bridge ......................................................................... 1-5
1.2.2 Passive Wheatstone-Bridge .................................................. 1-5
1.2.3 End to End Synchronic Measuring Method ........................... 1-5
1.3 General Features ....................................................................... 1-6
2 KEYBOARD, SOCKETS AND LEDS ....................................... 2-1
2.1 Connectors & Balance Controls ................................................. 2-4
3 OPERATING INSTRUCTIONS ................................................. 3-5
3.1 Start up and general rules ......................................................... 3-5
3.2 Calibration .................................................................................. 3-6
3.3 Storage and Recall of Measuring Results ................................. 3-8
3.4 Provided Special Actions after Measurements .......................... 3-9
4 TDR MEASUREMENTS ............................................................ 4-1
4.1 Principles of Operation .............................................................. 4-1
4.2 Settings before Measurement .................................................... 4-3
4.3 Test of a Single Pair................................................................... 4-6
4.4 Waveform Evaluation ................................................................. 4-7
4.5 Location of Cross Talk Points .................................................... 4-8
4.6 Comparison of Two Pairs .......................................................... 4-8
4.7 Comparison to Stored Result ..................................................... 4-9
4.8 Application Guide (General Hints for TDR) ............................. 4-10
4.9 Typical Waveforms .................................................................. 4-11
4.10 Obtaining the Missing V/2 ................................................... 4-15
5 ACTIVE BRIDGE ....................................................................... 5-1
5.1 Interference Voltage Measurement (AC and DC) ...................... 5-1
5.2 Resistance Measurements ........................................................ 5-2
5.2.1 Loop Resistance Measurement (2 WIRE) ............................. 5-2
5.2.2 Loop Resistance Measurement (2-WIRE & GND) ................ 5-4
5.2.3 Resistance Difference Measurement .................................... 5-5
5.2.4 Insulation Resistance Measurement ..................................... 5-6
5.3 Capacitance Measurements ...................................................... 5-8
5.3.1 Capacitance Measurement (2 WIRE) .................................... 5-9
5.3.2 Capacitance Measurement (2 WIRE&GND) ....................... 5-10
5.3.3 Capacitive Balance Measurement ....................................... 5-12
5.4 DC Fault Location with MURRAY Method ............................... 5-13
5.5 DC Fault Location with Küpfmüller Method ............................. 5-15
5.6 DC Fault Location with 3 Point Method ................................... 5-18