VAMP 265 - Page 40

Table of Contents
Technical description
40
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VM265.EN011
5.3. Virtual inputs and outputs ............................................ 129
5.4. Output matrix ................................................................. 130
5.5. Blocking matrix .............................................................. 131
5.6. Controllable objects ..................................................... 132
5.6.1. Local/Remote selection ...................................... 134
5.7. Logic functions .............................................................. 134
6. Communication ................................................................. 135
6.1. Communication ports .................................................. 135
6.1.1. Local port X4 ......................................................... 136
6.1.2. Remote port X5 ..................................................... 138
6.1.3. Extension port X4 ................................................... 139
6.1.4. Ethernet port .......................................................... 140
6.2. Communication protocols .......................................... 141
6.2.1. PC communication .............................................. 141
6.2.2. Modbus TCP and Modbus RTU ........................... 141
6.2.3. Profibus DP ............................................................. 142
6.2.4. SPA-bus ................................................................... 144
6.2.5. IEC 60870-5-103 ..................................................... 145
6.2.6. DNP 3.0 ................................................................... 147
6.2.7. IEC 60870-5-101 ..................................................... 148
6.2.8. External I/O (Modbus RTU master) ..................... 149
6.2.9. IEC 61850 ................................................................ 149
6.2.10. EtherNet/IP ............................................................. 151
7. Applications ........................................................................ 153
7.1. Restricted earth fault protection ................................ 153
7.2. Restricted earth fault protection for a transformer with
neutral connection ................................................................ 154
7.2.1. CT Requirements ................................................... 155
7.3. Calculating the stabilizing resistance R
S
, VDR value
and actual sensitivity ............................................................. 156
7.3.1. Value of stabilizing resistor R
S
.............................. 156
7.3.2. Voltage limitation ................................................. 157
7.3.3. Actual operating sensitivity ................................. 157
7.3.4. Example ................................................................. 158
7.4. Current Transformer Selection ..................................... 159
7.4.1. CT classification according IEC 60044-1, 1996 . 159
7.4.2. CT Requirement for Protection ........................... 162
7.5. Protection of a Dyn11 transformer ............................. 165
7.6. Protection of a YNd11 transformer ............................. 167
7.7. Protection of generator and block transformer ....... 168
7.8. Application example of differential protection using
VAMP 265 ................................................................................ 169
7.9. Trip Circuit Supervision .................................................. 170
7.9.1. Trip circuit supervision with one digital input .... 170
7.9.2. Trip circuit supervision with DI19 and DI20 ........ 178
8. Connections ....................................................................... 182
8.1. Rear panel view ............................................................ 182