ISA T1000 PLUS - Table of Contents

DOC. MIE91093 Rev. 1.34 Page 3 of 145
SHORT FOREWORD ............................................................................. 7
SAFETY AT WORK................................................................................. 8
INTRODUCTION .................................................................................. 11
1 APPLICATION EXAMPLES ........................................................... 14
1.1 OVERCURRENT RELAY TESTING .......................................................... 16
1.1.1. Introduction ..................................................................... 16
1.1.2. Connection to current outputs ............................... 17
1.1.3. I> Threshold and drop-off ......................................... 19
1.1.4. I>> Threshold and drop-off ..................................... 20
1.1.5. Trip and drop-off timing ............................................. 21
1.2 OVER AND UNDER VOLTAGE ................................................................ 21
1.2.1. Introduction ..................................................................... 21
1.2.2. Connection to voltage output .................................. 22
1.2.3. V> Threshold and drop-off ........................................ 24
1.2.4. V< Threshold and drop-off ........................................ 24
1.2.5. Trip and drop-off timing ............................................. 25
1.2.6. Hint: how to test a three-phase voltage relay25
1.2.7. Hint: vector group test for a PT transformer . 26
1.3 DC VOLTAGE RELAY TESTING ............................................................. 28
1.3.1. Introduction ....................................................................... 28
1.3.2. Connection to voltage output .................................. 28
1.3.3. V< Threshold and drop-off ........................................ 30
1.3.4. Trip and drop-off timing ............................................. 31
1.4 REVERSE POWER RELAY TESTING ....................................................... 32
1.4.1. Introduction ....................................................................... 32
1.4.2. Connection of the relay .............................................. 33
1.4.3. P% Threshold and drop-off ...................................... 37
1.4.4. Threshold and drop-off of other points ............. 37
1.4.5. Trip and drop-off timing ............................................. 38
1.5 DIRECTIONAL RELAY TESTING ............................................................ 39
1.5.1 Introduction ........................................................................ 39
1.5.2. Connection of the relay .............................................. 41
1.5.3. MTA and angle sector ................................................... 44
1.5.4. V-I curve test .................................................................... 46
1.5.5. Trip and drop-off timing ............................................. 47
1.6 OVER AND UNDER FREQUENCY RELAY TESTING ................................ 48
1.6.1. Introduction ..................................................................... 48
1.6.2. Connection to voltage output .................................. 49