Voltage Relays

We offer the best product range of Voltage Monitoring Relay Three Phase and Automatic Voltage Regulating Relay (AVR).

Voltage Monitoring Relay Three Phase

Mounting Door Mounting
Supply voltage 3 Phase 415 VAC, 50 Hz (R, Y, B & N) (Additional auxiliary supply not required)
Output Contacts Two SPDT (C-NO-NC) Relay, Rating 5A at 230V AC

Protection of 3 Phase devices against Over voltage, Under voltage, Single Phasing, Reverse Phasing & unbalance supply are one of the major issue in electrical systems. For safe running of 3-phase devices, special protections that keep a continuous watch on supply conditions are very essential. The major cause of maximum load burn-out is overloading which occurs due to unbalance supply, Single Phasing & Reverse Phasing conditions. VMR3P detects such Conditions & protect the load from burn out. 'PROTON's VMR 3P' offer above protections along with 3 digit display showing R-Y, Y-B, B-R voltages in scanning mode with precise accuracy. LOW/HIGH voltage tripping to ensure trouble free running of 3-phase Loads.

Indications:1) SPP- RED LED2) Over voltage- RED LED3) Under voltage- RED LED4) Relay ON - Green LED
Relative Humidity10 to 95% RH
Mounting:Flush
ON Delay:1- 60 sec
Cutout:92 X 92 W
Dimension :96 X 96
Display :7 Segment LED 3 digit
Voltage trip setting:1) Lower limit is 340 for Under Voltage Upper limit is 460 volts for over Voltage (Resolution of 1V)2) Hysteresis bet cutoff & cutin is 10 V
Micro controller based technology.
Protection against under voltage, Over voltage.
All set points settable by keys.
Trip Delay is settable
Reverse Phasing Protection can be bypassed through settings.
Indications Voltage relay, fault relay ON.
Message display for Under/Over Voltage./SPP
Application
- Electrical Panels.
- Electrical Test benches
- Genset panels
- Package unit and central air conditioning plants.
- Compressor motors.
- Submersible pumps
- Cold storage's

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Automatic Voltage Regulating Relay (AVR)

The AVR controller is a state of the art microcontroller technology based voltage regulating relay product form Proton. The AVR controller has the complete operating logic of the processes preprogrammed.

Operating Modes:

The operating mode can be selected using TEST or NORMAL Mode front panel Switch:

NORMAL Mode:

> In this mode the AVR is operational. If PT input voltage is less than PT set point voltage minus hysteresis, then HIGH LED glow & there is a pulse of LOWER RELAY as per user setting pulse time & delay between two pulses & it clears if PT input voltage is greater than or equal to PT set point
> If PT input voltage is greater than PT set point voltage plus hysteresis, then LOW LED glow & there is a pulse of RAISE RELAY as per user setting pulse time & delay between two pulses, & it clears if PT input voltage is less than or equal to PT set point .
> If PT input voltage is less than UV set point then UV relay on & UV LED glow & it clears if PT input voltage is greater than or equal to UV set point plus hysteresis.

TEST Mode:

> In TEST mode there is one potentiometer at front side of unit, it is independent of PT supply.
As per Potentiometer value voltage , Test Low & Test High LED glows as per PT voltage set point.

Settings:

> To enter settings mode press set key and then press increment key for enter the correct password.
> The password value can be set by using INC or DEC key & then press ENT key.
> Press set key to move to next parameter. To edit parameter press increment/decrement keys
> To save and exit SET mode press ENT key.
> If no key is pressed then controller automatically goes to initial Display normal mode.
> The factory set password is 11.