Feeder protection



BF1

Static Frequency relay low cost solutions for frequency monitoring purpose for genset & power system.

Key Features

» Static Type Voltage Relay
» Rated voltage Un : 110 V, 230 V, 400 V AC
» Rated frequency range : 45-66 Hz
» Accuracy : ± 5 % of set value
» power consumption in voltage circuit : 3.5 VA
» Thermal load carrying : constant 1.3 x Un capacity of the voltage circuit
» Dropout to pickup ratio : dependent on the set hysteresis
» Dropout time : 300 ms
» Minimum operating delay : 300 ms

 Under Frequency Protection (81U)


 Over Frequency Protection (81O)

Under Voltage Protection BF1-U
Over Frequency Protection BF1– O
Under & Over Frequency Protection BF1-UO

Options : 110V / 230V / 400V AC

Hardware


  Setting Range: U> : 0.9-1.3, Unit : 0 - 10 s, DIFF : 2-10%

  Front plate of the unit is protected with a sealable transparent cover (IP40).

  Mounting - DIN

Hardware


  Regulations : VDE 0435 part 303

  Shock : class 1 acc. to DIN IEC 255-21-2

  Vibration : class 1 acc. to DIN IEC 255-21-1



  • (A) 3 Wire system 110 V


  • (B) 4 Wire system 230 V

  • (C) 3 Wire System 400 V