InteliMains
NT
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf, ©ComAp – April 2015
Bus protect: Bus >V Hst; Bus <V Hst; Bus V del
Bus protect: Bus >f; Bus <f; Bus f del
Configured in Protections tab in default archive:
Mains protect: Mains V unbal; Mains Vunb del
Mains protect: Mains I unbal; Mains Iunb del
Bus protect: Bus V unbal; Bus Vunb del
Analog protect: Batt >V; Batt <V; Batt volt del
8.1.4 Mains voltage and frequency protections - limits and indications
IDMT Current: This protection can be activated or deactivated by the setpoint
Mains protect:Mns2Inom prot. For more information on the dynamic delay of this protection
refer to the setpoint Mains protect:Mains2Inom del in the APPENDIX of this document or in
context help in GenConfig.
IDMT Active Power: This protection can be activated or deactivated by the setpoint
Mains protect:Mns2POvrldProt. Mains protect:OverldStrtEval setpoint defines when the IDMT
Active Power protection starts to be evaluated. For more information on the dynamic delay of
this protection refer to the setpoint Mains protect:2POvrldStEvDel in the APPENDIX of this
document or in context help in GenConfig.
Vector Shift: This protection may be enabled, disabled or enabled in parallel operation only by the
setpoint Mains protect:VectorS Prot. Corresponding breaker that will react to this protection is
determined by the setpoint Mains protect:VS/ROCOF CB sel (MGCB application only).
Triggering limit is defined by Mains protect:VectorS limit. There are logical binary outputs
VECTORSHIFTTRP and VECTORSHIFTACT which activate for 3s each time vector shift causes
corresponding breaker to trip (TRP) or when vector shift protection activates even though the
breaker is not tripped because for example the corresponding breaker for Vector Shift is already
opened or it fails to open (ACT).
ROCOF: This protection may be enabled, disabled or enabled in parallel operation only by the
setpoint Mains protect:ROCOF Prot. Corresponding breaker that will react to this protection is
determined by the setpoint Mains protect:VS/ROCOF CB sel (MGCB application only).
Triggering limit is defined by Mains protect:ROCOF df/dt. Evaluation window in number of
periods is given by the setpoint Mains protect:ROCOF Win. There are logical binary outputs
ROCOFTRP and ROCOFACT which activate for 3s each time ROCOF causes corresponding
breaker to trip (TRP) or when ROCOF protection activates eventhough the breaker is not
tripped because for example the corresponding breaker for ROCOF is already opened or it fails
to open (ACT).
Mains Over and Under Voltage: This protection limits are given by setpoints Mains protect:Mains
>V MP, Mains protect: Mains <V MP. Delay for over and under voltage is given by the setpoint
Mains protect:Mains V del. Protection is indicated by message “MP LX over” (X = number of
corresponding phase) or “MP LX under”. When Basic settings:FixVoltProtSel is adjusted to
PHASE-PHASE then this protection is evaluated based on voltage between phases and it is
indicated by “MP LXY over” or “MP LXY under” (where XY are number of corresponding
phases).
Mains Over and Under Frequency: This protection limits are given by setpoints Mains
protect:Mains >f, Mains protect: Mains <f. Delay for over and under frequency is given by the
setpoint Mains protect:Mains f del. Protection is indicated by message “MP fm over” or “MP fm
under”.
8.1.5 Bus voltage and frequency protections - limits and indications
Bus Over and Under Voltage: This protection limits are given by setpoints Bus protect:Bus >V, Bus
protect: Bus <V. Delay for over and under voltage is given by the setpoint Bus protect:Bus V
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