Woodward LS-5 v2 Series - System a Voltage Asymmetry

appropriate buttons or by activating
the LogicsManager output "External
acknowledgement" (via a discrete
input or via an interface).
3003
3009
Monitoring lockable
Limit 1/Limit 2
2 [Yes] Monitoring for fault conditions is only
performed if "Lock Monitoring Status
24.40" is false.
No Monitoring for this fault condition is
continuously enabled regardless of
"Lock Monitoring Status 24.40".
8844 SyA. decoupling 2 System A decoupling by undervoltage
level 1
On Tripping of system A undervoltage
level 1 causes decoupling.
[O󰆞] Tripping of system A undervoltage
level 1 does not cause decoupling.
4.3.1.9 System A Voltage Asymmetry
General notes
Voltage asymmetry is determined by calculating the negative sequence component of a
three-phase system. This value is derived from the three delta voltages (phase-phase).
Voltage asymmetry monitoring is only active if "SyA. voltage measuring" (parameter
1851) is con󰈡gured to "3Ph 4W" or "3Ph 3W". The threshold is de󰈡ned as the percentage
of that value relative to the nominal delta voltage. The protective function is triggered if
this percentage value is exceeded.
If this protective function is triggered, the display indicates "SyA. 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 system A voltage measuring (parameter
1851)
is con󰈡gured to "3Ph 4W" or "3Ph 3W".
ID Parameter CL Setting range
[Default]
Description
3921 Monitoring 2 [On] Voltage asymmetry monitoring is
carried out according to the following
parameters.
O󰈠 No monitoring is carried out.
110 LS-5 v2 Series 37650
4 Con󰈡guration
4.3 Con󰈡gure Monitoring
Released