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4.5.1.6 Other Monitoring
4.5.1.6.1 Power Factor - configure generator power factor monitoring
4.5.1.6.1.1 Generator Lagging Power Factor (Level 1 & 2)
General notes
The power factor is monitored for becoming more lagging (i.e. inductive) than an
adjustable limit. This limit may be a lagging or leading power factor limit. There are two
lagging power factor alarm levels available in the control. This monitoring function may
be used for monitoring an overexcitation with a warning and a shutdown alarm level. Both
alarms are definite time alarms.
The power factor monitoring
• is activated, •
if the generator current expires 5% rated Generator current and
• is blocked, •
if the generator current underrun 3% rated Generator current.
╚═▷ Fig. 186 shows an example of a leading and a lagging power factor limit and the
power factor range, for which the lagging power factor monitoring issues an alarm.
If this protective function is triggered, the display indicates "Gen. PF lagging 1" or
"Gen. PF lagging 2" and the logical command variable "06.25" or "06.26" will be enabled.
Power Factor
+0.50 +0.75 1.00 -0.75 -0.50
Leading (capacitive) Lagging (inductive)
More lagging than a leading
PF limit of -0.40
More lagging than a lagging
PF limit of +0.85
Import Inductive Power Export Inductive Power
+0.85 -0.40
Fig. 186: Generator lagging power factor
ID Parameter CL Setting range
[Default]
Description
2325
2331
Monitoring 2 [On] Generator lagging power factor
monitoring is carried out
according to the following
parameters. Monitoring is
performed at two levels. Both
455 easYgen-3000XT Series B37574
4 Configuration
4.5.1.6 Other Monitoring
Released