InteliMains
NT
, SW version 3.0
InteliMains-NT-BTB-3.0-Reference Guide.pdf,
©ComAp – June 2013
146
12.2.6.12
Setpoint: BusLeft <f
Group
BusL Protect
Range [units]
Related FW
3.0
Description
This setpoint adjusts the threshold level for the busL underfrequency
protection. The threshold is adjusted in % of the buses' system frequency
which is given by
Nom frq offset
.
The protection activates if the frequency in phase L3 drops below the
threshold for time longer than
N
OTE
:
The busL underfrequency protection is
History record
type - for more
information on protection types please refer to
alarm types section
.
12.2.6.13
Setpoint: BusLeft f del
Group
BusL protect
Range [units]
0.00 .. 600.00 [s]
Related FW
3.0
Description
This setpoints determines the delay for busL under- (defined by
) protections.
N
OTE
:
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 generator 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.
12.2.6.14
Setpoint: BusMeasErrLR
Group
BusL protect
Range [units]
DISABLED, ENABLED [-]
Related FW
3.0
Force value
possible
YES
Description
N
OTE
:
Althought this setpoint is located in
BusL protect
it is valid for both busL and
