11-6 9492600990
Metering DECS-150
AVR/Manual Mode: AVR and Manual Mode status is reported by two indicators. When a mode is active,
its corresponding indicator changes from gray to green. AVR mode is selected by clicking the AVR button
and manual mode is selected by clicking the Manual button.
Var/PF Mode: Three indicators report whether var mode, Power Factor mode, or neither mode is active.
When a mode is active, its corresponding indicator changes from gray to green. When neither mode is
active, the Off indicator changes from gray to green. Var mode is enabled by clicking the var button and
Power Factor mode is enabled by clicking the PF button. Var or power factor correction is disabled by
clicking the Off button. Only one mode can be enabled at any time.
Setpoint Pre-Position: A control button and indicator are provided for the three setpoint pre-positions.
Clicking the Set 1 button adjusts the excitation setpoint to the Pre-position 1 value and changes the Pre-
position 1 indicator to green. Pre-positions 2 and 3 are selected by clicking the Set 2 and Set 3 buttons
respectively.
Grid Code Mode: These eight indicators change from gray to green to indicate various grid code status.
Setpoints: Two status fields display the active setpoints for AVR mode, FCR mode, var mode, and
Power Factor mode. These active setpoints, displayed with yellow characters, are not to be confused with
metered analog values, which are displayed with green characters throughout BESTCOMSPlus. For
details on operating setpoint settings, see the Regulation section.
Setpoint Fine Adjust: Clicking the Raise button increases the active operating setpoint. Clicking the
Lower button decreases the active operating setpoint. The raise and lower increment is directly
proportional to the adjustment range and inversely proportional to the traverse rate.
Setpoint Return: Clicking the Return button changes the active operating setpoint back to the original
value before it was adjusted.
Setpoint Limits: The Upper indicator changes from gray to green when the upper setpoint limit threshold
has been exceeded. The Lower indicator changes from gray to green when the lower setpoint limit
threshold has been exceeded.
Alarm Status: The Alarm Status indicator changes from gray to green when there is an active alarm.
PSS Status: The PSS Status indicator changes from gray to green when the optional power system
stabilizer is active.
Null Balance: The Null Balance indicator changes from gray to green when the setpoint of the inactive
operating modes (AVR, FCR, var, or PF) match the setpoint of the active mode.
Virtual Switches: These buttons control the open or closed status of the six virtual switches. Clicking the
Open button sets the switch to the open position and changes the switch indicator to gray. Clicking the
Close button sets the switch to the closed position and changes the switch indicator to red. After clicking
either button, you will be prompted to confirm your selection.
Metering Summary
BESTCOMSPlus Navigation Path: Metering Explorer, Summary
All of the metering values displayed on the individual, previously-described metering screens are
consolidated on the metering summary screen. Primary- and per-unit values are available. Figure 11-12
illustrates the primary-values metering summary screen.
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