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Vector Solutions
Vector Solutions


Protective Relays

We are a leading Wholesale Trader of over current relay, motor protection relay, reverse power relay, phase failure relay and ac voltage relay from Chennai, India.

Over Current Relay

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Over Current Relay
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Approx. Rs 20,000 / PieceGet Latest Price

Product Details:
BrandProk dv's
Accuracy ClassClass 1.0
Frequency50 Hz +/- 5 %
Rated Current1A /5A site selectable
Auxiliary85 to 275 V AC/ DC
Operating Temperature-5 to +55 Degree C
Weight300 grams
ModelMPOLR 1A / 5A
Contact Rating8 A,250 V AC OR 8 A,30 V DC
Dimension96 X 96X 70 mm ( W X H X D)

Features :
  • True RMS measurements
  • Accuracy class 1.0
  • 2 –Line, 16 Char back-lit LCD display.
  • Display of line currents ( Ir, Iy, Ib)
  • Pick-up and tripping of overload through the LED indication
  • CT ratio-Site selectable from 5/5 to 3000/5A for 5A
  • Site selectable from 1/1 to 600/1A for 1A
  • Compact and ideal for an industrial environment
  • Display of Loss of phase & unbalance trip
  • 2 Set of potential free output contacts
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Motor Protection Relay

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Motor Protection Relay
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Approx. Rs 4,700 / PieceGet Latest Price

Product Details:
BrandProk dv's
MountingDIN Rail
Over Load Current Setting Range1 Amps - 96 Amps In 4 Range
Dimension70 x 55 x 108 mm
Operating Temperature0 - 55 Deg C
Model NumberPD-MMPR-303
Fixed Trip Time Delay0.5 sec to 5 sec
Power Supply85 to 275 V AC / DC

Prok dv’s make Microcontroller Based Motor Protection Relay PD-MMPR-303 uses the state-of-the-art Microcontroller based measurement techniques for providing protection for Motors up-to 75HP. The comprehensive protection features of the relay make it ideal for Motor protection. The heart of the relay is microcontroller based reliable hardware with special algorithms to calculate the trippingtime. The relay continuously monitors the Three Phase Currents to build the thermal replica of the Motor. This thermal replica is used to protect the Motor against Thermal over Loads.  The Microcontroller Based Motor Protection Relay does not require external Current Transformer (CT) for its operation for within the bandwidth of Im ranges. The three phase R, Y and B cables are made to pass through the CT hole which is in the relay. The built in CT’s takes care of stepping down of the Currents to the required level. The stepped down three phase Currents are continuously monitored by the relay to detect any abnormal behavior of the Motor and to make tripping decision.

The following protections offered by Prokdv’s make Microcontroller Based Motor Protection Relay PD-MMPR-303:
  • Thermal Over Load Protection  
  • Single Phasing /Phase Fail Protection   
  • Phase Reversal Protection   
  • Unbalance Protection   
  • Earth Fault Protection   
  • Locked Rotor Protection   
  • Under Current Protection


Features:
  • Accurate and Real Time TRUE RMS measurements.  
  • Motor Rated Current (Im) Selection by means of Pot meter with markings. 
  • Earth Fault Setting provided by means of Pot meter with markings. 
  • Selectable Thermal Trip Time characteristics Class - 10A, 10, 20 & 30.  
  • Pre-alarm at 105 % of Im by Potential Free Output Contacts.  
  • Provided the Thermal replica for motor overload condition. 
  • Continuous monitoring of Motor IDLE/Stop, COLD, WARM, HOT, I> & Various Fault status through visual LED indication. 
  • Motor protections – UB (Unbalance), UC (Under current), LR (Locked rotor), EF (Earth fault) can be enabled or disabled using Dip switch setting. 
  • Motor Trip class – Class 10A, Class 10, Class 20, Class 30 can be configured using dipswitch If none of the trip class selected, Default: CLASS 20 Selected internally 
  • By default Fail safe mode  provided for output  TRIP and ALARM Relay 
  • Front end Communication through Mod bus protocol with RS-485 Port for Fixed slave I.D- (optional).  
  • Various Models with Current ratings.  
  • Compact and Reliable.  
  • Manual TEST / RESET Facility.
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Reverse Power Relay

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Reverse Power Relay
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Approx. Rs 15,000 / PieceGet Latest Price

Product Details:
BrandProk dv's
Rated Current5 Amps
Trip Level4 % - 20 % in Steps of 1%
Delay0 - 20 Sec in Steps of 0.1 Sec
Sensing Voltage Range50 - 500 V
Frequency Range40 - 60 Hz
Auxiliary Supply85-275 V AC/DC
Output Relay2 C/O,250 V, 8A AC 30 V, 8A DC
Operating Temperature-5 to +55 Degree Celsius
Panel Cut out137 x 137+0.1mm
Enclosure Dimensions144 x 144 x 105 mm

Features :
  • Microcontroller based, hence accurate and precise.
  • Protection of Generator / Prime movers against reverse power
  • Visual indication of power, pick-up and relay tripping.
  • Display of reverse power on the LCD.
  • Continuous display of sensing voltage, current, frequency and power factor with the lead/lag indication.
  • Wide Auxiliary voltage range from 85–275V AC/DC.
  • Cost-effective and highly reliable compact design.
  • Test Facility, allowing the user to check the NO and NC contacts of the relay.
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Phase Failure Relay

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Phase Failure Relay
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Approx. Rs 600 / PieceGet Latest Price

Product Details:
BrandProk dv's
Dimensions75 x 95 x 75 mm (L x H x D)
Power Ratings415 V AC,3 Phase,50 Hz
Fixed Tripping Time Delay2.5 Sec +/- 0.5 Sec.
Unbalance Voltage setting10% or 20% (user selectable)
ResetManual / Auto
Relay Contacts2 C/O,Potential free contacts Normally energized (fail-safe)
Auxiliary Voltage110/220/415 VAC 50 Hz
MountingDin type/surface (Fixing on 35 mm Din Channel)

Features :
  • Negative phase sequence detection.
  • Low power consumption.
  • Selectable percentage unbalance settings.
  • Auto/Manual reset operation.
  • Fail-safe system.
  • Accurate, reliable and tropicalized.
  • Din Rail/surface mounting type.
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AC Voltage Relay

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AC Voltage Relay
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Approx. Rs 11,000 / PieceGet Latest Price

Product Details:
BrandProk dv's
Aux Voltage85 to 275V A C/DC
Over Voltage Trip Time70% to 99% in steps 1% Site selectable
Over Voltage Setting range101% to 120% in steps of 1% site selectable
System Voltage Un220V230V/240V/250VAC site selectable

Focusing on the quality of the products, we are engaged in manufacturing, supplying, exporting and trading AC Voltage Relay. These are voltage monitoring and supervision relay for the polyphase system that are extensively used for monitoring both under voltage and over voltage conditions.

Features :
  • Site selectable system voltage
  • Continuous display of the measured voltage parameter
  • 16 character 2 line LCD display with back-lit
  • Accurate reading for balanced and unbalanced load
  • The wide range of auxiliary input for both AC & DC
  • Independent contacts for both Under & Overvoltage
  • Self-reset & site selectable reset gap
  • Built-in fixed instantaneous Under & Overvoltage highest trip
  • User-friendly setting modes using keypads
  • Low power consumption
  • Tropicalized design using microcontroller & Ideal for industrial environment
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R. Suresh
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