As one of the reckoned organizations, we are engaged in manufacturing, supplying, exporting and trading Static Overload Relay. Provided with visual LED indication, these relays are developed under the supervision of expert engineers, who hold extensive knowledge of this domain. Furthermore, owing to their features like superior performance, low maintenance, high tensile strength and longer service life, these relays are applicable in feederdistribution control panel and generator control panel. Features: Reliable operationHigh speedDurable Details: Static deviceWide operating range 40%-200% of rated current InCompact in size an d aesthetic valueVisual LED indicationRugged, Robust and Tropicalised designTamper proof acrylic cover Specifications:Auxiliary voltage 230VAC, 50 HzCurrent input 5 amp or 1 ampOperating Range 50%to 200%Tripping time Fixed or Variable

Meeting the demands of customers as a manufacturer, supplier, exporter and trader, we are offering Numerical Voltage Relay. Keeping in mind the protection of power plants and feeders, these relays are applicable in protection of motor & generators and main or backup protection. Appreciated for longer functional life and integrated draw out system, our offered relays are provided with modular integrated draw out system and nonvolatile memory for data retention. Features: Long functional lifeHigh speedIntegrated draw out system Details: IDMT & Definite time characteristicsNegative phase sequence detectionHigh Pickupdrop off ratioModular Integrated draw out systemNonvolatile memory for data retentionWide range of system voltagesHigh speed feature for under voltages and over voltages2 line, 16 character back-lit LCD display and key padVery low burden on measurement and Aux circuitsAccurate and reliable measurement of voltagesField selectable system voltages Specifications:System Voltage 380V, 400V, 415V and 433V-3Ph 4WFrequency Range 45 Hz to 65 HzPick-Up Over Voltage-101% of Set Value Under Voltage-99% of Set ValueDrop-Out Over Voltage 1% Below Pick-Up Voltage Under Voltage-1% Above Pick-Up VoltageResponse Time >) for >25% (0.0-5.0 Sec) in Steps of 0.1Time for Higher Set (UV) (0.0-5.0 Sec) in Steps of 0.1 Applications: Protection of motor and generatorsMain or backup protectionFor detection of OV&; UV in power plants and distribution systemProtection of transformer panel & Capacitor control panel

Taking quality as our prime importance, we are engaged in manufacturing, supplying, exporting and trading Motor Protection Relay . Ideal for motor protection, these relays are manufactured using reliable hardware with special algorithms, which allows to calculate the tripping time. Continuously monitors the three phase currents to build the thermal replica, which is used to protect the motor against thermal overloads, these relays are appreciated for accurate measurements and thermal memory. Features: Accurate measurements Thermal memory Dimensional accuracy Other Details: Selectable Thermal Trip Time characteristics Class - 10A, 10, 20 and 30 Pre-alarm at 105 % of Im by Potential Free Output Contacts Fault records up to Previous 999 faults and 20 Previous On-Board faults with Date and Time stampings IncrementDecrement Key and ModeSet key in front facia Operational and Type Nature of Fault indications through OLED Communication through Modbus protocol with RS-485 Port EnableDisable option for Earth Fault, Under Current, Locked Rotor, Phase Unbalance Protection Various Models with Current ratings Dimensions in mm: 70X75X109 (WXHXL) Operating Temp: 0c to +60c Auxiliary Power Supply: 85-275V ACDC Trip Accuracy: As per IEC 947-4-1Trip Class 10A, 10, 20, and 30 Pick-Up Accuracy: +- 12.5% Specifications: Thermal Over Load Protection: Over Load Current Setting Range 2.0Amps 96.0Amps in 4 ranges as explained in SL.13 Trip Time Characteristics Class 10A, 10, 20 &30 as per IEC 947-4-1 Pre-alarm at 105 % of Im by One set of Potential Free output Contacts Thermal Memory Provision Earth Fault Protection: Earth Fault Current Setting Range10% to 50% of Im, in steps of 1% (20% - Factory Set) Trip Time Delay 0.1Sec to 5.0Sec in steps of 0.1Sec (0.1Sec - Factory Set) EnableDisable Option Phase Unbalance: Unbalance Current Setting Range 10% to 50% of Im, in steps of 1% (40% - Factory Set) Trip Time Delay 0.1Sec to 5.0Sec in steps of 0.1Sec (2.0Sec - Factory Set) EnableDisable

Understanding the demands of customers as a manufacturer, supplier, exporter and trader, we are providing Static Earth Fault Relay. Our offered relays are current sensing devices that are tropicalized and manufactured employing advanced machinery and technology. Can be installed with various earth fault protective schemes, the relays offered by us finds their application in generators, alternators, transformers and feeders. Features: Static DeviceCompact, Reliable with Aesthetic ValueRugged, Robust and Tropicalised designConsistent repeat accuracyWide Current Operating rangeLED Indication for Healthy & Fault StatusManual Reset & Low Burden on CT Secondary Specifications:Auxiliary Voltage 110V230V415V550V, AC 50 Hz 48110220 VDCFrequency 50HzNeutral or Summation CT Rated Current-In 1A or 5A (Factory Set)Burden on CT

Being a client-centric organization, we are engaged in manufacturing, supplying, exporting and trading Numerical Over Current Relay. Based Over Current Relay (OCR) with Earth Fault Relay (EFR), these relays are extensively used for selective over current. Apart from this, applicable in substations and industrial networks, these relays are widely used for earth fault protection of radial feeders in impedance earthed power systems. Features: Definite time curve for both Phase & Earth along with optional user defined curveLow AC burdenReliable auxiliary supply of wide range input of 18-85 or 85-275 volts AC or DCNon-Volatile memory for data retention and retrieval in the event of power failureUnique combination of 505150N51N in a single gadgetConsistent repeat accuracyHigh Drop-offPick-up ratioPoly carbonate front cover with external reset switch Specifications:Accuracy Of Operating Time: For Idmt, Definite Timeand Instantaneous 5%, 3% and Less than 2 Cycles Relay Rated Current (In) 1A or 5A user selectable Frequency 50 Hz or 60 Hz Auxiliary Voltage Range 85V-275V ACDC, 21-130V DC Pick-Up 103% Drop-Off 97% Ac Burden < 0.4VA for 5A and < 0.2VA for 1A Dc Burden < 5W during non operated condition and < 7W during operated condition Dimensions 151 x181x195 mm (WxHxD Mounting Flush Panel Cut-Out 151 x 157 mm + 0.1mm Contact Rating AC: 250 V @ 30 AMP and DC: 24 V @ 30 AMPS, 2 CO or 3 CO Operating Temperature 5 to +55C

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 polyphase system that are extensively used for monitoring both under voltage and over voltage conditions. User-friendly in nature, these relays provide accurate reading for balanced and unbalanced load. Also, these relays are applicable For protection of synchronous & induction motors and transformer feeder panel. Features: User friendly settingLow power consumptionFlawlessness FinishDetails: Site selectable system voltageContinuous display of the measured voltage parameter16 character 2 line LCD display with back-litAccurate reading for balanced and unbalanced loadWide range of auxiliary input for both AC & DCIndependent contacts for both Under & Over voltageSelf reset & site selectable reset gapBuilt in fixed instantaneous Under & Over voltage highest tripUser friendly setting modes using key pads Specifications:Parameter3 Phase 4 Wire 3 Phase 3 WireAux voltage 85 to 275V ACDC 85 to 275V ACDCSystem voltage Un 220V230V240V250V AC site selectable 110V380V400V415V433V ACsite selectableOver voltage setting range 101% to 120% in steps of 1% siteSelectable 101% to 120% in steps of 1% siteSelectable0-30sec in steps of 0.1sec 0-30sec in steps o f 0.1secOver voltage trip time 70% to 99% in steps 1% Site selectable 70% to 99% in steps 1% siteSelectableUnder voltage setting range 0-30sec in steps of 0.1sec 0-30 sec in steps o f 0.1sec 1% to 5% o f Un in steps of 1% 1% to 5% of Un in steps of 1%Under voltage trip time 0 -30sec in steps of 1sec 0 -30sec in steps o f 1secReset gap Fixed UV high set 120% of Un Fixed UV high set 120% of UnOn time delay Independent contact for UVOV Independent con tact f or OVOV

Well-known in the industry as a manufacturer, supplier, exporter and trader, we are engrossed in offering Digital Frequency Relay. Provide continuous display of the measured frequency, these relays are applied as backup protection for mechanical over speed devices in order to avoid damages. Finds its application in generator and captive power plant, our offered relays are also used for mechanical over speed devices. Features: Low maintenanceUser selectable trip timingsHigh performance Details: Dedicated microcontroller basedAccurate, reliable and tropicalized designContinuous display of the measured frequencyUser selectable upper frequency and lower frequency limitsUser selectable trip timingsUses SMPS for Auxiliary Power i.e. Wide operating range for Auxiliary Input 85V-285V ACDC Specifications: Rated Voltage: 230V415V ACAuxiliary Supply: 85V-275V ACDCFrequency Setting Range: 40-60 Hz. In steps of 0.1 HzPower Supply Burden: < 3WattsContact: Single change over contacts For Under frequency 8 Amps@250V AC, 8 Amps@30VDC Potential free contactsTurn Off delay: 0.05-10.0 Sec In steps of 0.05sec Definite time, User selectableDimensions: 144X144X120 mmPanel Cut Out: 137X137 mm Applications: Generator and captive power plantOver frequency relay applied as backup protection for mechanical over speed devices to avoid damages to prime moverUnder frequency relay applied to protect field winding from excessive current, voltage regulator from over loadServo controller and inverters

Counted among the prominent manufacturers, suppliers, exporters and traders, we are engaged in offering digital reverse power relay. As a microprocessor control based relay, these provide accurate and precise, owing to which demanded by our customers across the globe. Used for the protection of generators, these relays have visual indication of power and display continuous sensing of voltage, current and frequency. Features: longer life spanhigh performanceprecisely design details: microcontroller based, hence accurate and preciseprotection of generator prime movers against reverse powervisual indication of power, pick-up and relay trippingdisplay of reverse power on the lcdcontinuous display of sensing voltage, current, frequency and power factor with leadlag indicationwide auxiliary voltage range from 85275v acdccost effective and highly reliable compact designtest facility, allowing the user to check the no and nc contacts of the relay specifications: rated current: 5 ampstrip level: 4%20% in steps of 1%delay: 020 sec in steps of 0.1 secsensing voltage range: 50500vfrequency range: 4060 hzauxiliary supply: 85-275v acdcout put relay: 2 co, 250v, 8a ac 30v, 8a dcoperating temperature: -5 to +55cpanel cut out: 137x137+0.1mmenclosure dimensions: 144x144x105 mm applications: protection of generator and prime moverturbine

With the aid of modern machinery and technology, we have been able to manufacture, supply, export and trade phase failure relay. Fully static, these relays are widely used for large number of motor applications as are developed in tandem with the guidelines laid in the industry. To suit the requirements of clients, we offer these relays in selectable percentage unbalance settings and automanual reset operations. Features: high performanceprecisely designtrouble free functionality details: negative phase sequence detectionlow power consumptionselectable percentage unbalance settingsautomanual reset operationfail safe systemaccurate, reliable and tropicaliseddin railsurface mounting type specifications: system voltage: 415v ac 3 phase 50 hzfixed tripping time delay: 2.5 sec 0.5 secunbalance voltage setting : 10% or 20% (user selectable)reset: manualautorelay contacts: 2 co , potential free contacts normally energized (fail-safe)auxiliary voltage: 110220415v ac 50 hzmounting: din typesurface (fixing on 35 mm din channel)dimensions: 759575mm(lhd) applications: suitable for motors of any hp ratingspower supply distribution boardsagriculture pump control panels

Backed by rich industry experience, we have been able to manufacture, supply, export and trade Restricted Earth Fault Relay. Our offered relay is a universal protection device that is demanded for high, medium and low voltage networks. Owing to their various features like study construction, minimal maintenance and microprocessor base design, these relays are demanded to be used for various industrial applications. Features: Microprocessor base designOptimum performanceRugged construction Details: Microprocessor Based DesignWide Setting RangesUniversal Auxiliary supply 85-275V ACDCRugged and Compact Design8 Character Back-lit LCDDisplay of Fault current Specifications: Rated Current: 5 AmpsPlug setting Range: 5% 80% in steps of 1%Operating Time: Instantaneous(

Prok dv's make digital microprocessormicrocontroller based earth leakage relays (elr) with core balance current transformer (cbct zct) are used to detect leakage currents in electrical power systems. Elr transmits a signal to activate the trip coil of the mccbacbocbcontactor in the event of earth leakage resulting in automatic isolation of the load. Elr have been widely used and accepted because of field adaptability and are economic.

Prok devices pvt ltd an iso 9001-2008 company introduces digital microprocessor micro controller based idmt definite time instantaneous earth fault relay (efr). It is a current sensing device which is semitropical professionally designed and tested for protection of generators, transformers and feeders. Prok dv's make digital microprocessor micro controller based idmt definite time instantaneous earth fault relay (efr) can be employed with various earth fault protective schemes