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Voltage Relays (VR)
Manufacturing a wide range of voltage relays, we have been able to
cater to the wide requirements of our clients across the globe. These
are in compliance with international standards of quality and delivers
optimum performance. Customized as per the specifications of our
clients, these possess following features and technical details:
Special Features
Available with Pick-up and Trip Time Delay in 3-Phase Voltage Relays
Smart design to fit on any standard mounting channel
Choice of screw less terminals
2% Accuracy
Test and Auto/Manual Reset facility
Signal and Source (Control supply) are separate
Designed for high reliability, as relay energizes only under fault conditions
Only 1/2 phase voltage relay with user selectable U/V or O/V range by DIP switch
Only 1/2 phase voltage relay with 2 user selectable voltage range by DIP switch
Technical Data
1.Supply Voltage: 110V/220V/380V/440V AC 50Hz or 12/24V DC
2.Permissible Supply Variation: 25%
3.Output Contacts: 2 change over contacts (2 sets, one for each set point in case of
4.2S Relays)
5.Switching Duty: 6A resistive at 24V DC or 240V AC
6.Relay Status: De-energized in normal conditions
7.Set Point (Range) : a)VR1-1/VR1-2 = 180- 220 & 240-300/340-400
& 440-500 V AC b)VR96-1 = 180-220 & 240-300/340-400 &
440-500 V AC
8.) VR3-3/VR3-4 = 340-400 & 440-500 V AC
9.Time Delay (optional): 0.1-10 sec settable
10.Mode of Operation: Under Voltage/Over
11.Voltage (user selectable) & U/V-O/V combined
12.Reset: Automatic/Manual
13.Setting Accuracy: 5% of Full Scale
14.Mounting: Any standard mounting channel
15.Dimensions: 77mm (W) * 90mm(H) * 110mm(D) for 2S models - 155mm(W) For VR96-1 = 96mm(W) * 96mm(H) * 70mm
Operation
1.VR1-1 / VR1-2
1ph/2ph. voltage relay monitors the voltage signal (to be connected at sensing point)
Status of relay changes when the signal goes out of the range which is selected on the dial
Relays available with or without time delays
'SET' LED glows when voltage signal goes out of the range selected in case of relays with time delay
Relay energized after delay; indicated by 'RLY' LED
2.VR3-3 / VR3-4
3phase voltage relay senses the voltage level of each phase individually in a continuous mode
In case any phase goes out of the range selected on voltage set dials, this equipment changed the status of relay
Voltage of which phase have gone under or over the range by separate LEDS indicated
When voltage level is within the voltage range selected, HEALTHY LED glows
Relay energizes in fault condition after the 'PICKUP' time delay
Relay de-energizes after 'TRIP' time delay when normal conditions resumes
Relays with two set point used for two separate relay contacts of under and over voltage protection for same source
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