Basler Electric DECS-250N - Manual (Page 88)

72 9440500990 Rev D
Metering DECS-250N
Figure 61. Bus Primary-Values Metering
Field
BESTCOMSPlus Navigation Path: Metering Explorer, Field
HMI Navigation Path: Metering Explorer, DECS Output
Metered field parameters include the field voltage (Vfd), current (Ifd), and exciter diode ripple. The exciter
diode ripple is reported by the exciter diode monitor (EDM) and is reported as a percentage of the
induced ripple in the exciter field current.
To achieve the desired level of excitation, the appropriate level of operating power input voltage must be
applied. This value is displayed as the power input voltage.
The level of excitation power supplied to the field is displayed as a percentage, with 0% being the
minimum and 100% being the maximum.
Primary- and per-unit values are available. Figure 62 illustrates the field primary-values metering screen.
Figure 62. Field Primary-Values Metering
PSS
BESTCOMSPlus Navigation Path: Metering Explorer, PSS (Power System Stabilizer)
HMI Navigation Path: Metering Explorer, PSS
Values metered by the power system stabilizer function display positive sequence voltage and current,
negative sequence voltage and current, terminal frequency deviation, compensated frequency deviation,
and the per-unit PSS output level. The PSS function on/off status is also reported. Primary- and per-unit
values are available. Figure 63 illustrates the PSS primary-values metering screen.