ABB REM 610 Technical Reference Manual page 5

1MRS755537
Motor Protection Relay
Technical Reference Manual - ANSI Version
6.1.2.4.
6.1.2.5.
6.1.2.6.
6.1.2.7.
6.1.3. Start-up supervision ....................................134
6.1.3.1.
6.1.3.2.
6.1.4. Cumulative start-up time counter ...................135
6.1.5. Short-circuit protection .................................135
6.1.6. Unbalance and phase reversal protection .......136
6.1.6.1.
6.1.6.2.
6.1.6.3.
6.1.7. Ground-fault protection ................................137
6.1.7.1.
6.1.7.2.
6.1.8. Circuit-breaker failure protection ....................138
6.1.9. Temperature protection (optional)...................138
6.2. Protecting a circuit-breaker controlled motor ................138
6.3. Protecting a motor at an ambient temperature other
than 40°C ..............................................................140
6.4. Protecting a contactor controlled motor.......................141
6.5. Protecting non-rotating objects ..................................142
6.6. Ground-fault protection in an isolated or a
compensated network..............................................142
6.7. Ground-fault protection in a solidly grounded network ...143
7. Ordering information ............................................. 145
8. Check lists ........................................................... 147
9. Abbreviations ....................................................... 155
Checking the set safe stall time for
a single start................................133
Restart disable level, 49 RESTDIS ..133
Prior alarm level, 49 ALARM ..........133
Time constant dial, Kc ...................134
Start-up supervision based on
thermal stress calculation...............134
Checking the need for speed switch..134
Selecting the pickup value for
element 46 ..................................136
Selecting the time constant, 46
TDIAL.........................................136
Connection with two phase current
transformers ................................136
Stabilizing virtual ground-fault
currents ......................................138
Increasing the sensitivity of the
ground-fault protection...................138
REM 610 REM 610
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