Each BUS TIE breaker controller and each externally controlled breaker creates a new busbar section.
More information
See Power management, Power management principles, Busbar sections for more information about busbar sections.
12.2.2 Nominal settings
The controller nominal settings are used in a number of key functions. For example, many protection settings are based on a
percentage of the nominal settings.
Busbar A nominal settings
Configure these nominal settings under Configure > Parameters > Busbar A > Nominal settings > Nominal settings #, where #
is 1 to 4.
Table 12.1
Controller nominal settings
Nominal setting Range Default Notes
Voltage (V) 10 V to 160 kV 400 V The phase-to-phase* nominal AC voltage for busbar A.
Current (I) 1 A to 9 kA 867 A
The maximum current flow in one phase (that is, L1, L2 or L3) in busbar A
during normal operation.
Frequency (f) 48 to 62 Hz 50 Hz
The system nominal frequency, typically either 50 Hz or 60 Hz. All the
controllers in the system should have the same nominal frequency.
Power (P) 1 kW to 900 MW 480 kW
The nominal active power for the bus tie breaker. Ignored if P nominal
calculated is selected.
Apparent power (S) 1 kVA to 1 GVA 530 kVA
The nominal apparent power for the bus tie breaker. Ignored if S nominal
calculated is selected.
Power factor (PF) 0.6 to 1 0.9 The nominal power factor at the bus tie breaker.
*Note: In a single-phase set up the nominal AC voltage is phase-to-neutral.
Configure the nominal settings calculation method under Configure > Parameters > Busbar A > Nominal settings > Nominal
settings # > Calculation method, where # is 1 to 4.
Table 12.2
Nominal setting calculation method
Calculation method Options Default
Reactive power (Q) nominal
Q nominal calculated
Q nominal = P nominal
Q nominal = S nominal
Q nominal calculated
P or S nominal
No calculation
P nominal calculated
S nominal calculated
No calculation
More information
See AC configuration and nominal settings, Nominal settings, Nominal power calculations for more information.
Busbar B nominal settings
Configure these nominal settings under Configure > Parameters > Busbar B > Nominal settings > Nominal settings #, where #
is 1 to 4.
DESIGNER'S HANDBOOK 4189340911K UK Page 402 of 521
To Next Page
Loading...
