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We are introducing ourselves as leading manufacturers for Motor Controller & other products. Our company is in the field since last 15 years. We would like to become your valuable supplier. We request you to register our firm as a supplier for... |
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S. No. 28, Jagtap Dairy, Pimple Nilakh, Pune - 411 027, Maharashtra India.
Tel. : +91-20-2727 0100,
Telefax : +91-20-2727 0800, 2727 6777
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Three Phase Voltage Monitoring Relay VMR4p Dinrail : |
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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 maxium
load burn-out is overloading which occurs due to unbalance supply,
Single Phasing & Reverse Phasing conditions.
VMR 4 detects such Conditions & protect the load from burn out. |
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'PROTON's LVM 3P' offer above protections along with 3 digit display showing
R-Y, Y-B, BR voltages in scanning mode with precise accuracy.
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LOW/HIGH voltage tripping to ensure trouble free running of 3-phase Loads.
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VOLTAGE MONITORING RELAY- VMR 4 (SINGLE PHASE SPP) |
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SALIENT FEATURES : |
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Microcontroller based technology. |
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Voltage protection along with digital voltage readout. |
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Wide range of supply variation. |
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Unit will also work if any one phase is present. |
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Protection against Under voltage. |
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Protection against Over voltage. |
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Single Phasing & Reverse Phasing protection. |
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All the set points setable by keys. |
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Phase unbalance protection. |
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Trip Delay for Under voltage & Unbalance is settable |
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Reverse Phasing Protection can be able
to bypass through settings. |
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Indications for Low voltage , High Voltage,
SPP & Relay ON . |
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Message Display for SPP, Reverse Phasing
& Unbalance Faults. |
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No separate auxiliary supply required. |
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Hold feature:- Press INC key in Running
condition to observe particular supply voltage. |
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Neutral Protection feature i.e. If one of the phase get
connected to neutral then there will be no
damage to the unit. |
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TECHNICAL SPECIFICATION : |
Supply Voltage |
3 Phase 415 VAC,50 Hz (R,Y,B &N) (No auxilliary supply) |
Output Contacts |
Two changeover ( C-NO),Rating 5A at 230VAC |
Voltage trip setting |
Lower Limit is 340 for Under voltage (Resolution of 1 Volt)
Upper Limit is 460 Volts for OV (resolution of 1 V)
( Hysterisis between cut off & cut in is 10V) |
Trip Time delay |
Trip time Less than 100msec.for SPP, Reverse Phasing
& Over Voltage
Trip Time is settable for Under Voltage & Unbalance.. |
ON Delay |
Selectable by keys from 1 to 60 sec. |
Reset Mode |
Auto reset |
Indications |
SPP : RED LED
OVER VOLTAGE : RED LED
UNDER VOLTAGE: RED LED
RELAY ON : GREEN LED |
Keys |
[ SET ] : FUNCTION key, To select a set point function. |
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[ /\ ] : INC key, To increment set point. |
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[ \/ ] : DEC key, To Decrement set point. |
Operating Temperature range |
-5 0C to 60 0C. |
Relative Humidity |
10 to 95% |
Mounting |
Din rail. : Base mounting dimensions
55 (W) x 65 (L) x 125 (D) mm. |
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WORKING : |
- In the normal run mode, display shows Voltages Vry,Vyb,Vbr for 10 sec. each
If the supply is within the range then On Timer starts decrementing on display
& after Set On Time over Relay will be ON.
If Over voltage, Under voltage or spp/reverse phasing/unbalance
occurs in the supply then Relay will be OFF & corresponding
fault LED starts blinking.
Hysterisis betwen Cut off & cut in is 10V
WORKING
- Hold feature:- Press INC key in Running condition to observe particular supply voltage.
To go into scroll mode press INC key again. |
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