A frequency relay and recorder, the FR2, is a Digital Signal Processor based system which computes phasor values of a voltage at a nominal rate of 20 phasors per cycle. The phase angle rate of change is calculated for rapid measurement of frequency with extremely high precision.
FR2 features underfrequency, overfrequency and 4 set points, each capable of tripping with 6 cycles or more of delay. A frequency output is available every second. The relay can store a data profile during trip time for up to five minutes. This profile can be transmitted to a SCADA system or output over the RS-232 port.
Advanced phasor measurement techniques.
Four independent frequency settings.
High noise immunity to transients, harmonics, & swings.
Accuracy to ± 0.005 Hz down to 20 Vrms
Keypad and display for direct operator interface
RS-232 port for portable computer interface
Continuous Frequency Display and setting information
Power Quality Data
