Busbar protection

numerical multifunctional relay for low and medium voltage busbar monitoring
used for generator and transformer monitoring and protection against unallowed voltage and frequency changes
overvoltage and/or undervoltage protection, overfrequency and/or underfrequency protection
phase and line voltage measurements shown on alphanumeric LCD
residual voltage Uo measurement
high measurement accuracy (true RMS)
events recording with time stamps
RS485, FO or Ethernet communication. MODBUS RTU(TCP), PROFIBUS protocols
selftest function, local and remote availability signalling
protection trip signalling on bi-colour LED indicators

numerical multifunctional relay for low and medium voltage busbar monitoring
used for protection of renewable energy sources connection to the grid
overvoltage and/or undervoltage protection, overfrequency and/or underfrequency protection
enables the selection of additional vector shift detection function in order to prevent the islanding operation of the renewable source
high measurement accuracy (true RMS)
events recording with time stamps
RS485 or FO communication with a master system
alphanumeric LCD with 2×8 characters and backlight for measurements, registered values and parameters display
selftest function, local and remote availability signalling
protection trip signalling on bi-colour LED indicators
small dimensions, 35 mm rail mounting