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Protective Relays

List All types of Protective Relays , ACCL & Other Prok Dvs Products

Automatic Source Change Over Cum Current Limiter

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Automatic Source Change Over Cum Current Limiter
  • Automatic Source Change Over Cum Current Limiter
  • Automatic Source Change Over Cum Current Limiter
  • Automatic Source Change Over Cum Current Limiter
  • Automatic Source Change Over Cum Current Limiter
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Approx. Rs 1,200 / PieceGet Latest Price

Product Brochure
Product Details:
BrandProk dv's
PhaseThree Phase
Changeover Source TypeDual Source
Display Type2 Line,16 Character Back Lit LCD display
MountingDin
IndicationLED Indications for presence of EB & DG
Degree ProtectionIP20
Dimension143 x 158 x 136 mm
Tolerance+/- 1 mm
MaterialABS Fire Retardant Plastic
IndicationsLED Indication for Presence of EB & DG
Conditional Shot Circuit Current1 kA

Features :
  • Current ratings 1 Amps to 63Amps continuous duty when the load on EB/DG
  • While monitoring the Generator supply, it allows only a limited load and functions as Load limiter as per desired current (Factory set)
  • Whenever Load Current exceeds the present limit, power is automatically switched off and on automatically after 9 seconds and trips again if the overload still exists this cycle(3sec ON & 6sec OFF) is repeated every 9 sec, ACCL will enter into LOCKOUT mode after 5 ON & OFF cycles if overloading of DG still exists.
  • On resumption of EB mains, ACCL automatically changes from DG to EB and allows full current. ACCL comes out of LOCKOUT mode when EB resumes
  • The unit can be Reset manually by RESET switch
  • The ON/OFF cycles can be set according to customer requirements (optional)
  • If the unit has entered LOCKOUT mode due to OV/UV, the unit has to be reset manually.
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Earth Leakage Relay

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Earth Leakage Relay
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Approx. Rs 2,500 / PieceGet Latest Price

Product Brochure
Product Details:
BrandPork dv's
Current0.3 to 10 A
Model NoMPEL
Contact Rating8A 250V AC/ 8A 30V DC 2C/O
MountingFlush / Din
Panel Cut Out Flush90 x 90 + .1mm
Operating Temperature-5 to +55 Degree Celsius

Features:
  • Digital Microprocessor / Microcontroller based compact design.
  • Continuous monitoring and display of set value and measured value of leakage current.
  • 8 character 2 line LCD displays with back-lit.
  • Test & Reset facility.
  • CBCT / ZCT connection monitoring facility.
  • True RMS  measurement of leakage current.
  • Trip Circuit Failure indication.
  • Immune to harmonics and transients.
  • Serial RS 485 communication port with Modbus Protocol (optional).
  • Tropicalized and rugged design.ŸTransducer Output- (4 mA-20mA) (optional).
  • External  Test, Reset, Fault & Healthy indication suitable for Mining application

Application:
  • Frame leakage protection for LT control panels and switch boards.
  • Earth Leakage protection for Feeders / Motors / Generators / Transformers / Mobile Operating Equipments.
  • Protection for hazardous sensitive environments like Oil  Refineries/Cement Plant/Chemical  Plant/Steel Plant / Pulp Industries and General Electrical Distribution.
  • Protection for Mining and Control Engineering.
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Earth Fault Relay

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Earth Fault Relay
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Approx. Rs 3,500 / PieceGet Latest Price

Product Brochure
Product Details:
BrandProk dv's
Voltage85 to 275 V AC/DC
ModelMPEFSPL
Frequency50 Hz
Operating Temperature-5 to + 55 Deg C
Plug Setting Range5% - 80% in steps of 5%
Rated Current5 A
Dimension96 W x 70 D x 96 H mm

Features:
  • Microcontroller based design
  • Wide setting ranges 
  • Auxiliary voltage 85 -275 AC/DC
  • Rugged and Compact design 
  • 8 character back lit LCD display 
  • Display of the fault  current 
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Over Current Relay

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

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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 Brochure
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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Numerical Overcurrent And Earth Fault Relay

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Numerical Overcurrent And Earth Fault Relay
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Approx. Rs 3,500 / PieceGet Latest Price

Product Brochure
Product Details:
BrandProk dv's
Voltage18-85 or 85-275 volts AC or DC
Contact Form3 Over Current Relay
ModelPNA442
Dimension151 mm x 181 mm x 195 mm
Rated Current1A or 5A user selectable.

Features:
  • Three phase , low-set, non - directional Over current relay with inverse definite minimum time (IDMT) or definite time characteristics
  • Three phase, high-set, non-directional Over current relay with instantaneous or definite time function
  • Low-set non -directional Earth fault Relay with inverse definite minimum time (IDMT) or definite time characteristics
  • High-set non-directional Earth Fault Relay with instantaneous time or definite time functionŸModular Integrated Draw Out System for field adaptability and tropicalised design (MIDOS)
  • Password protection
  • 2 line 16 characters industrial grade LCD with back-lit module for numerical display of setting values and measured values which is user friendly
  • Trips for default/previously selected curve if the fault occurs during settings of the relay
  • Membrane key pad for easy operation, dust proof front panel
  • Enabling /Disabling o f High-Set
  • LED indications for power , pick-up, phase fault trip or Earth Fault trip or IDMT and High-set
  • RS-485 communication port with modbus protocol
  • Relay test facility with relay trip & without relay trip
  • Separate heavy duly output contacts provided  or time delayed phase fault with high-set  and time delayed Earth Fault with high-set
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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 Brochure
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 Brochure
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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Restricted Earth Fault Relay

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Restricted Earth Fault Relay
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Approx. Rs 5,800 / PieceGet Latest Price

Product Brochure
Product Details:
Minimum Order Quantity1 Piece
BrandProk Dvs
Usage/ApplicationIndustrial
Current1A/5A
Mounting TypeFlush & Din Rail
Relay TypeFault Relay

Prok dvs make Restricted Earth Fault Relay

The application of powerful microprocessors DIGITAL MICROPROCESSOR BASED
RESTRICTED EARTH FAULT RELAY (REFR) opens a new chapter for power system protective
relaying. The digital processing of measured values and the ability to perform complex
arithmetic and logic operations, give digital protection relays significant performance and
flexibility improvements over their traditional analogue counterparts. Additional
advantages - very small power consumption, adaptability, self-supervision, smaller
physical construction and selectable relay characteristics - all combine to allow the
implementation of accurate and highly reliable protection schemes at a significantly
reduced financial burden.

Additional Information:

  • Delivery Time: 1-5 Days in Tamil Nadu
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    Tap Position Indicator

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    Tap Position Indicator
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    Approx. Rs 1,800 / PieceGet Latest Price

    Product Brochure
    Product Details:
    BrandProk dv's
    Auxiliary Voltage110 or 230 or 415 VAC +15%,50 Hz
    Display1 to 99 positions, 2 digit 7 segment LED display
    AccuracyTolerance + 2%
    Type of MountingPanel Mounting
    Operating Temperature0 to 55 Deg C
    Lead CompensationTrough a potentiometer adjustment in The front fascia
    Break Down Voltage2KV,between all live terminal connected together And body for 1min
    Dimensions96 mm x 96 mm x 70 mm (Panel cutout size 90 mm x 90 mm+0.1 -0.00)

    Features:
    • Visual 7 segment digital display.
    • On/off switch with lamp indication provided for power supply status.
    • Potentiometer provision for trimming to compensate the lead resistance.
    • Panel mounting with aesthetic value.
    • Robust & Rugged i.e. suitable for industrial environment.
    • Greater degree of accuracy & consistent reliability
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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 Brochure
    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
    Yes! I am interested

     
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