Operating Data Measurement

The P632 has an operating data measurement function for the display of currents and voltages measured as well as quantities derived from these measured values. For the display of measured values, set lower thresholds need to be exceeded, to avoid fluctuating small values from noise. If these lower thresholds are not exceeded, the value Not measured is displayed. The following measured variables are displayed:

▪	Phase currents of all three phases of both ends of the transformer
▪	Maximum phase current of each end of the transformer
▪	Minimum phase current of each end of the transformer
▪	Delayed and stored maximum phase current of each end of the transformer
▪	Positive- and negative-sequence current measured values of each end of the transformer
▪	Current IN derived by the P632 from the sum of the phase currents for each end of the transformer
▪	Current IY measured by the P632 at transformer -Tx4 (x: 1, 2 or 3)
▪	Voltage
▪	Frequency
▪	Angle between the phase currents for a given end of the transformer
▪	Angle between the currents of the same phase between two ends of the transformer
▪	Angle between derived IN and the current measured at transformer -Tx4 (x: 1, 2 or 3)

The measured data are updated at 1 s intervals. Updating is interrupted if a general starting state occurs or if the self-monitoring function detects a hardware fault.

Contents of this chapter

▪	Measured Current Values
▪	Display of Delayed and Stored Maximum Phase Currents
▪	Positive- and negative-sequence currents
▪	Measured Voltage Values
▪	Frequency
▪	Angle Determination