ISA T1000 PLUS - Page 5

DOC. MIE91093 Rev. 1.34 Page 5 of 145
1.15.3 The Restraint and the Differential current ... 114
1.15.4 Connection to the relay ....................................... 115
1.15.5 Characteristic curve test ..................................... 119
1.15.6 Displaying characteristic with X-Pro 1000
121
1.15.7 Connections for different transformers ..... 123
1.15.8 Second harmonic restraint test ...................... 124
1.16 PRIMARY END TO END TEST ...................................................... 125
1.16. 1 Test setup ....................................................................... 127
1.16.2 Use of SWT3 ................................................................... 129
1.16.3 T1000 PLUS setup for End to End test ............ 130
1.16. 4 Line differential tests .............................................. 131
1.17 THERMAL RELAY TESTING ............................................................... 132
1.18 LOW-VOLTAGE AND MEDIUM VOLTAGE CIRCUIT BREAKER TESTS133
1.18.1. Introduction ................................................................. 133
1.18.2. Connection to current outputs .......................... 134
1.18.3. I> Threshold ................................................................. 135
1.18.4. Intervention curve .................................................... 136
1.19 CT SATURATION KNEE TEST ........................................................... 136
1.19.1. Introduction ................................................................. 136
1.19.2. Test set connection ................................................. 137
1.19.2. Test execution ............................................................ 138
APPENDIX 1 OVERCURRENT RELAYS ..................................... 140