Underfrequency Relay : BF1-U
RANGE
- Rated voltage Un : 110 V, 230 V, 400 V AC
- frequency range at
50 Hz rated frequency : 46 – 50 Hz
60 Hz rated frequency : 55.2 – 60 Hz - Tolerance : ± 1 % of of rated frequency
- Hysteresis : 0.5 % of of rated frequency
- power consumption : 3.7 VA
- Thermal load carrying : continuously 1.3 x Un capacity
- Returning time : 250 ms
- Minimum operating time : 250 ms