SR1

SYNCHRONISING RELAY

»  Suitable for parallel operation between
  • Transformer to Transformer
  • Transformer & Genset
  • Genset to GEnset
»  16 -bit Microcontroller based automatic synchronizing relay
»  LED Synchroscope
»  Accurate synchronization to a phase difference of less than ± 3 degrees.
»  Three types of control for voltage / frequency
»  Correction are available:
  • Potential free contact
  • Voltage (± 1V/ ± 3V/ ± 9V/ 0-5V)
  • Current (4-20mA)
»  User can choose any combination of these options.
»  Proportional as well as Adaptive control. for governor & automatic voltage regulator
»  A user friendly MMI
»  Wide selectable setting range with fine steps.
»  Password security for parameter setting.
»  Automatic as well as manual synchronizing mode of operation
»  The synchronizing control is blocked when the closing command is issued and remains blocked if the phase difference is less than a user defined limit.
»  Hooter assignment on different faults
»  Synchronizing Protection - 25


SR 1


Hardware


  Display - 20 characters/row x 4 rows LCD display with built in controller

  6 Keys Keypad - Select, Increment, Decrement, Enter, Cancel, Reset

  Controls: Opto-isolated I/Ps – 2: - Start Sync, Dead Bus Enable

  Storage Temperature - - 40°C - +75°C

  Operating Temperature - - 20°C - +70°C

  Mounting – Flush Mounting

  Aux Supply –
  • 20V DC to 360 V DC
  • 25V AC to 270V AC



  Aux Supply Burden - < 6VA

  Nominal Voltage –
  • 110V / 80-150V
  • 230V / 180-260V
  • 400V / 340-460V

  Tolerance in Voltage Measurement – ±1%

  Tolerance in Frequency Measurement – ± 0.5%

  Rated frequency – 50Hz

  Tolerance in phase difference measurement - ±1°