InteliMains
NT
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf, ©ComAp – April 2015
required:
Both setpoints (MainsNomVph-ph and BusNomVph-ph) must be adjusted to
the same values according to the value of actual Bus nominal voltage. E.g.
Bus nominal is 400 V but Mains nominal is 415 V.
In this case both setpoints need to be adjusted to 400 V and setpoints of
corresponding protections for Mains need to be set assymetrically.
For 415 V on Mains it is typical to open MCB when voltage reaches 440 V or
390 V. Since the setpoint is adjusted to 400 V corresponding protection
setpoints need to be adjusted to Bus >V = 106% and Bus <V = 97 % (hence
the desired values are reached).
11.2.2.9 Setpoint: Nomin current
This setpoint is used for adjusting the maximal allowed current at the mains
feeder.
The nominal current is used as the basis (100%) for mains thermal-
overcurrent protection (2POvrldStEvDel), and for short current protection
(Mains2Inom del).
NOTE:
The setpoints MainsCTprim and MainsCTsec must be adjusted properly to
obtain correct mains current readings.
CAUTION!
The maximum measurable input current to the controller current terminals is
11A.
WARNING!
Do not discconnect the CT terminals from the controller while there is
nonzero current in the CT primary circuit!
11.2.2.10 Setpoint: NominMainsImp
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