ABB RET670 - Page 13

Completing the test.....................................................................201
Capacitor bank protection CBPGAPC............................................. 201
Verifying the settings and operation of the function....................202
Completing the test.....................................................................206
Negative-sequence time overcurrent protection for machines
NS2PTOC (46I2)............................................................................. 206
Verifying settings by secondary injection....................................206
Completing the test.....................................................................208
Voltage-restrained time overcurrent protection VRPVOC(51V)...... 208
Verifying the settings.................................................................. 208
Completing the test.....................................................................212
Voltage protection.................................................................................212
Two step undervoltage protection UV2PTUV (27).......................... 212
Verifying the settings.................................................................. 212
Completing the test.....................................................................213
Two step overvoltage protection OV2PTOV (59)............................ 213
Verifying the settings.................................................................. 213
Extended testing.........................................................................214
Completing the test.....................................................................214
Two step residual overvoltage protection ROV2PTOV (59N)......... 215
Verifying the settings.................................................................. 215
Completing the test.....................................................................216
Overexcitation protection OEXPVPH (24)....................................... 216
Verifying the settings.................................................................. 216
Completing the test.....................................................................217
Voltage differential protection VDCPTOV (60)................................ 217
Check of undervoltage levels..................................................... 217
Check of voltage differential trip and alarm levels...................... 219
Check of trip and trip reset timers...............................................221
Final adjustment of compensation for VT ratio differences ....... 221
Completing the test.....................................................................221
Loss of voltage check LOVPTUV (27).............................................222
Measuring the trip limit of set values.......................................... 222
Completing the test.....................................................................222
Frequency protection............................................................................ 223
Underfrequency protection SAPTUF (81)........................................223
Verifying the settings.................................................................. 223
Completing the test.....................................................................224
Overfrequency protection SAPTOF (81)......................................... 224
Verifying the settings.................................................................. 224
Table of contents
Transformer protection RET670 2.2 ANSI 7
Commissioning manual