Generator Voltage Asymmetry - Woodward easYgen-2000 Series User Manual

Configuration
Configure Monitoring > Generator > Generator Voltage Asymmetry
ID Parameter
2402 Self acknowl‐
edge
2408
2403 Delayed by
engine speed
2409
4.4.1.11

Generator Voltage Asymmetry

General notes
ID Parameter
3900 Monitoring
122
CL Setting range Description
[Default]
Notes
For additional information refer to
on page 587
2 Yes The control unit automatically clears the alarm if the fault condition is no
longer detected.
[No] The control unit does not automatically reset the alarm when the fault condi‐
tion is no longer detected.
The alarm must be acknowledged and reset by manually pressing the appro‐
priate buttons or by activating the LogicsManager output "External acknowl‐
edgement" (via a discrete input or via an interface).
2 Yes Monitoring for fault conditions is not performed until engine delayed moni‐
toring is enabled. The engine monitoring delay time (param‐
eter
parameters assigned this delay.
[No] Monitoring for this fault condition is continuously enabled regardless of engine
speed.
The voltage asymmetry alarm monitors the individual three-phase
voltages of the generator. Voltage asymmetry monitoring is always
performed phase-phase (delta). The percentage threshold value is
the permissible variation from the average measured voltage of all
three phases.
If a measured voltage exceeds a configured permissible asymmet‐
rical voltage deviation from the average voltage value, an alarm is
issued.
Refer to
for the triggering characteristic of this monitoring function.
CL Setting range Description
[Default]
2 [On] Voltage asymmetry monitoring is carried out according to the following
parameters.
Off No monitoring is carried out.
easYgen-2200/2500 | Genset Control
Ä Chapter 9.5.1 "Alarm Classes"
3315 Ä p. 239) must expire prior to fault monitoring being enabled for
If this protective function is triggered, the display indi‐
cates "Gen. volt. asymmetry" and the logical command
variable "06.18" will be enabled.
Ä Chapter 9.1.1 "Triggering Characteristics" on page 481
This monitoring function is only enabled if Generator
voltage measuring (parameter
ured to "3Ph 4W" or "3Ph 3W".
1851 Ä p. 96) is config‐
37535B