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Under & Over Voltage Relay

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To solve the problem of over and under voltage, we are engaged in offering microprocessor based Under & Over Voltage Relay. Our offered voltage relay is based on latest technology and fitted in 96 mm X 96 mm sq. enclosure. If electrical products are connected with load that is more than the settable limits of voltage, this voltage relay indicates the power cut with alarm.

Applications:

  • Water
    purification and treatment plants
  • Paper
    and pulp industry - washers, head box feed, bleachers
  • Sugar
    industry - Pan alteration, Dialer automation
  • Chemical
    and petrochemical industry
  • Primary
    & auxiliary temperature controller for boilers
  • Water
    pumping stations, power plants and Under & Over Voltage Relay
    heat treatment furnaces
  • Seven
    segment LED display is provided for indication of settings and
    actual conditions

Principle of operation:

This voltage relay is based on the principle of precise sensing of actual voltage and w.r.to pre-set levels of permissible over & under voltage. Offered voltage relay activate protection circuit when the voltage crosses pre-set limit. Further, inform about this by activating alarm and indicating using LED.

Salient features:

  • Microprocessor
    based
  • Designed
    by the experts
  • Made
    using quality approved glass epoxy boards and integrated circuits
  • Easy
    to configure
  • User
    friendly
  • Absorb
    power supply transients using filter circuit and stabilized power
    supply
  • Stable
    display & display output help to view distance of more than 4
    meter

Burn - In:

Prior to delivery, offered voltage relay is checked under in electrically energized conditions for duration of 48 hours for ensuring the reliable performance and perfect design.

Type tests:

This voltage relay has undergone listed below tests at ERTL (West), STQC, Govt. Of India:

  • EMC
    Test: As per IEC - 61000 - 4 – 2 : 1995 for ESD and for HFD

  • Impact
    Shock Test as per IS 9000 (Pt. VII): 1997

  • Cold
    and Dry Heat Test as per IS 9000 (Pt. 11): 1977

Features:

  • Separate
    relay output for under & over voltage setting
  • User
    selectable Auto/ manual mode of resetting
  • Common
    relay output for any of the alarm condition

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