Phase Protection


SONET's SVD-04 is a 3-phase microprocessor controlled under / overvoltage& phase angle protection relay. 3-phase relay is used in systems exposed to over, under voltage & phase sequence are all normal the OUT light will turn on, relay contact will be energized and when there is default phase or phase sequence errors the OUT light will off, the relay will de-energizes its contact. It can be use as command, control or compensation systems.

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Key Features

  • Protection against under & over voltage.
  • Protection against wrong phase angle.
  • Protection against phase failure.
  • Indications and variable for voltage & delay setting.
  • Under Voltage Scale (Adjustable 160-205VAC).
  • Over Voltage Scale (Adjustable 240-285VAC).

Product Specifications

  • Model:SVD-04
  • Rated voltages:230vac
  • Network type:AC
  • Over voltage setup:1.05 to 1.30 x un
  • Under voltage setup:0.7 to 0.95 x un
  • Delay-off:0.1 to 20 seconds
  • Delay-on:0.1 to 20 seconds
  • Voltage adjustment:± 3%
  • Frequency:50/60Hz
  • Output type:1 inverter 8A 250v
  • Isolation voltage:400v
  • Rail Mounted:Yes
  • Device protection class:IP20
  • Temperature:-10 to +50°C
  • Dimensions (mm):36 x 96 x 60