Woodward easYgen-3000XT Series, Manual, Page: 426 / 1205

ID Parameter CL Setting range
[Default]
Description
LogicsManager equation "Release
engine monitoring".
For xx = 1 to 32:
96.{xx}
LM: Flag{xx}
The monitoring is executed, if the
LogicsManager "Flag {xx}" is
TRUE.
Example:
96.01 LM: Flag 1, 96.02 LM: Flag
2, ..., 96.32 LM: Flag 32
4.5.1.2.3 Generator Voltage Asymmetry
General notes
The voltage asymmetry monitors absolute value of all three phase-phase voltage
difference: dV
1
=|V
12
- V
23
|, dV
2
=|V
23
- V
31
| and dV
3
=|V
31
- V
12
|. If one of measured dV
1
,
dV
2
or dV
3
exceeds a configured permissible asymmetrical limit, an alarm is issued.
The percentage of permissible asymmetrical limit refers to the generator rated voltage.
If this protective function is triggered, the display indicates "Gen. volt. asymmetry" and
the logical command variable "06.18" will be enabled.
Refer to ╚═▷ “9.1.1 Triggering Characteristics” for the triggering characteristic of this
monitoring function.
This monitoring function is only enabled if Generator voltage measuring (parameter ╚═▷
1851 ) is configured to "3Ph 4W" or "3Ph 3W".
ID Parameter CL Setting range
[Default]
Description
3900 Monitoring 2 [On] Voltage asymmetry monitoring is
carried out according to the
following parameters.
Off No monitoring is carried out.
3903 Limit 2 0.5 to 15.0%
[10.0%]
(Hysteresis: 0.5%)
(Reset Delay: 80 ms)
The percentage values that are to
be monitored for each threshold
limit are defined here.
If this value is reached or
exceeded for at least the delay
time without interruption, the
action specified by the alarm class
is initiated.
Notes
426 easYgen-3000XT Series B37574
4 Configuration
4.5.1.2.3 Generator Voltage Asymmetry
Released