InteliMains
NT
, SW version 3.0
InteliMains-NT-BTB-3.0-Reference Guide.pdf, ©ComAp – June 2013
This setpoint determines the treshold for busR underfrequency protection.
This protection is evaluated with delay given by setpoint BusRight f del and it
is history record type.
12.2.7.8 Setpoint: BusRight f del
This setpoint adjusts delay for busR under- (BusRight <f) and overfrequency
(BusRight >f) protections.
NOTE:
Although the resolution of this setpoint is 0.01s, in fact the adjusted delay is
rounded to the next higher multiple of the period of the bus voltage. The
period is either 0.02s for 50Hz systems or 0.0166s for 60Hz systems. E.g. if
the delay is set to 0.03s at 50Hz system the real delay will be 0.04s.
12.2.7.9 Setpoint: BusR V unbal
This setpoint adjusts threshold for busR voltage unbalance alarm. The
voltage unbalance is calculated as a maximum difference between phase
voltages. This protection is history record type and its delay is set by the
setpoint BusR Vunb del.
12.2.7.10 Setpoint: BusR Vunb del
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