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.
purification and treatment plants
and pulp industry - washers, head box feed, bleachers
industry - Pan alteration, Dialer automation
and petrochemical industry
& auxiliary temperature controller for boilers
pumping stations, power plants and Under & Over Voltage Relay
heat treatment furnaces
segment LED display is provided for indication of settings and
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.
by the experts
using quality approved glass epoxy boards and integrated circuits
power supply transients using filter circuit and stabilized power
display & display output help to view distance of more than 4
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.
This voltage relay has undergone listed below tests at ERTL (West), STQC, Govt. Of India:
Test: As per IEC - 61000 - 4 – 2 : 1995 for ESD and for HFD
Shock Test as per IS 9000 (Pt. VII): 1997
and Dry Heat Test as per IS 9000 (Pt. 11): 1977
relay output for under & over voltage setting
selectable Auto/ manual mode of resetting
relay output for any of the alarm condition