4–258 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
PROTECTION CHAPTER 4: SETPOINTS
NEGATIVE VAR ALARM PICKUP
Range: 0.02 to 2.00 x Rated in steps of 0.01
Default: 0.85 x Rated
This setting specifies a pickup threshold for the negative var alarm function.
POSITIVE VAR ALARM DELAY
Range: 0.00 to 600.00 s in steps of 0.01 s
Default: 10.00 s
This setting specifies a time delay for the positive var alarm function.
NEGATIVE VAR ALARM DELAY
Range: 0.00 to 600.00 s in steps of 0.01 s
Default: 1.00 s
This setting specifies a time delay for the negative var alarm function.
ALARM RELAY X
For details see Common Setpoints
.
BLOCK FROM ONLINE
Range: 0.00 to 600.00 s in steps of 0.01 s
Default: 0.50 s
In a generator application, it may be desirable not to trip or alarm on reactive power
until the machine is online and the field has been applied. Therefore, this feature can be
blocked until the machine is online and adequate time has expired during which the field
had been applied. From that point forward, the reactive power trip and alarm elements
will be active. A value of zero for the block time indicates that the reactive power
protection is active as soon as the generator comes online.
BLOCK
Range: Off, Any FlexLogic operand
Default: Off
EVENTS
Range: Disabled, Enabled
Default: Disabled
TARGETS
Range: Disabled, Self-reset, Latched
Default: Self-reset
To Next Page
Loading...
