Product Details:
Brand | Prok dv's |
Rated System Voltage | 415V AC |
Tripping Characteristic | DMT |
Voltage Setting Range | (1-50) Volts in steps of 1V |
Trip Time Setting Range | (1-30) Sec In steps of 1Sec |
Output Relay | 230 VAC 5Amp /24VDC 5Amp |
Prok Dvs an ISO 9001:2008 Company indigenously develops the power system protection relays and panel meters for power system. µP based Zero sequence voltage relays are the state of the art design, to monitor and protect the costly equipments against unbalance voltages. The Relay Continuously monitoring all the three phase Line to Line Voltages, if any abnormal condition persists in the system internal Relay activated with predetermined set value of definite time. The Unit Displays Line to Line Voltages on LCD display, Healthy and Fault /Trip status Information through LED Display.
Technical Specifications:
Additional Information:
Product Details:
Brand | Prok dv's |
Frequency | 50Hz or 60Hz |
Relay Rated Current | 1A Or 5A User Selectable(In) |
Auxiliary Voltage Range | 85V - 275V AC/DC,21 - 130V DC |
Operating Temperature | - 5 deg to +55 deg C |
The micro-controller continuously monitors the magnitude of the phase current and the neutral current .whenever the phase current or the earth current magnitude exceeds the present value corresponding line / earth element will pick up and relay will trip after time interval calculated by the selected IDMT curves. Whenever the fault level exceeds the selected high set range, the relay will trip for high set, ignoring the selected IDMT curves. The timer logic is processed and after comparison with set time schedules, tripping signals are issued accordingly. There are two output relays , each output relay has two change over contacts either for alarm or tripping. The output relays are programmable. The relay rating (In) is field selectable either 1A or 5A. The relay has RS 485 com port which can be used with modbus protocol for communication purposes.
Additional Information:
Product Details:
Brand | Prok dv's |
Dimensions | 75x95x75 mm(LxHxD) |
System Voltage | 415VAC 3 Phase 50Hz |
Fixed Tripping Me Delay | 2.5 Sec +/- 0.5 Sec |
Unbalance Voltage Setting | 10% or 20% (user selectable) |
Auxiliary Voltage | 110/220/415 VAC 50 Hz |
SStatic Phase Failure (Pfr) Relay / Single Phasing Preventor (SPP) from Prok dv's works on the principle of negative phase sequence voltage detection of the incoming supply. Monitoring of the unbalance in the supply voltage is the proven technique which has been adopted in the Static Phase Failure (Pfr) Relay / Single Phasing Preventor (SPP).
Additional Information:
Product Details:
Brand | Prok dv's |
Frequency | 50Hz |
Auxiliary Voltage | 85-275 V AC/DC or 50-550V AC/DC |
High Set | (0.5 -16) In.,in steps of 0.1 |
Time for High Set Operation | (0.0 -1.6) Sec. in steps of 0.1 Sec |
Contact Capacity | 8A@250V AC,8A@30V DC |
Additional Information:
Product Details:
Brand | Prok dv's |
Frequency | 50Hz |
Auxiliary Voltage | 85-275 V AC/DC or 50-550V AC/DC |
High Set | (0.5 -16) In.,in steps of 0.1 |
Contact Capacity | 8A@250V AC,8A@30V DC |
The unit has LCD for displaying the fault current (at the time of tripping) and setting values (curves, plug setting & TMS). The LEDs are provided for indicating power ON status and to indicate IDMT or DEFINITE TIME or INSTANTANEOUS mode operation. Key pads are provided for easy setting/changing of the parameters.The design is tropicalised and rugged.
Additional Information:
Product Details:
Brand | Prok dv's |
Frequency | 50 Hz |
Auxiliary Voltage | 85-275 V/50 V-550 V AC/DC |
Rated Current | 1 A/5A |
Standard | IEC-60255 |
Dimension Flush | 96x96x70 mm,Din 80x95x75 (WxHxD) |
Prok dv’s make Definite Time / Instantaneous Static Earth Fault Relay (EFR) is a current sensing device which is tropicalised, professionally designed and tested for protection of Generators, Transformers and Feeders. Prok dv’s make Static Definite Time & Instantaneous Earth Fault Relay (EFR) can be employed with various earth fault protective schemes, which are explained in brief with figures. The magnitude of the earth fault current depends on the fault impedance and invariably the fault impedance for earth fault is higher than that for phase faults, hence the earth fault current is low compared to the phase fault currents. The fault impedance depends on the system parameter and also on type of earthing. The neutral may be solidly grounded, grounded through resistance or reactance.
Additional Information:
Product Details:
Brand | Prok dv's |
Current | 300 mA-30 A |
Voltage | 220 V |
Frequency | 50 Hz |
Description:
Additional Information:
Product Details:
Brand | Prok dv's |
Aux Voltage | 85 to 275V A C/DC |
Under Voltage Setting Range | 0-30sec in steps of 0.1sec 1% to 5% o f Un in steps of 1% |
Model Dimension | 137 mmx137mm |
All the line voltages are monitored and sensed simultaneously using three independent scale down potential transducer this low level ac signal is subjected to signal condition, which includes surge suppressors and harmonic filter, filtered signal is fed to the ADC of the industrial grade pic micro controller, When the sensing voltage level exceeds the user set value f or under or over voltage, Digital Microcontroller based definite-time under voltage (uv) and over voltage (ov) relay/line voltage monitor(LVM) gives an output signal in the form of relay change over for tripping/alarming.
Additional Information:
Product Details:
Brand | Prok dv's |
Operating Range | DC - 70% to 120% of rated voltage. AC - 80% to 110% of rated voltage |
Operating Time | 25 ms at rated voltage |
Type | PAR-1(PAR-H /PAR-S),PAR-2 & PAR-3 |
Rated Voltage | 24V,48V,110V,220V DC And 63.5V,230V AC |
Operating Temperature | -10 deg to +55 deg Celsius |
The PAR type auxiliary relay are voltage operated relays
mainly used in control and alarm circuits.PAR series of relay are available in two basic models PAR-H and PAR-S. Auxiliary relay CAR-H is provided with hand reset contacts. CAR-S is self reset type. PAR series of relays are available in 2-elements & 3-
elements model. Each element can be energized separately.
Additional Information:
Product Details:
Brand | Prok dv's |
Mounting Type | Flush / Din |
Input Auxiliary Voltage | 110V,230V,415V,550V AC 50Hz 48V,& 220V VDC |
Tripping Time | Variable 0.15 - 3 sec,Fixed 100 millisec,500 millisec,1 sec & 3 sec |
Contact Rating | 8 Amps/ 250V AC/ 8 Amps,30 V DC |
Prok dv's make Static Earth Leakage Relay (ELR) with Core Balance Current Transformer ( CBCT
/ ZCT) are used to detect the leakage current in an Electrical Power System. Static Earth
Leakage Relay (ELR) Transmits a signal to activate the trip coil of the MCCB/ACB/OCB
CONTACTOR in the event of Earth leakage, resulting in automatic isolation of the electrical
power system. Static earth leakage relay (ELR) and core balance current transformer (CBCT /
ZCT) have been widely used and accepted because these have field adaptability and are
economic.
Additional Information:
Product Details:
Brand | Prok dv's |
Current Setting Range | 300mA-12A |
Tripping Time | 0.0Sec - 5Sec (in steps of 0.05 sec) |
Device ID | 1 - 30 (For models with com port) |
Rated Frequency | 50Hz / 60Hz |
Auxiliary Voltage | 85 - 275 V AC / DC L - L 380V,440V,550V |
Panel Cut Out | 90mmX90mm + 2 mm (For Flush Type only) |
Earth Leakage Current give rise to generation of heat and result in progressive failure of insulation, which leads to earth faults sparking flashovers, deterioration of earthing and finally
results into catastrophic fires which destroys costly equipments, gadgets and precious lives. It is therefore essential to detect earth leakage current well before they cross the threshold
limits and isolate the circuit in the event of leakages.
Prok dv's make Digital microprocessor/microcontroller 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 MCCB/ACB/OCB/CONTACTOR in the event of earth leakage resulting in automatic isolatio of the load. ELR have been widely used and accepted because of field adaptability and
are economic.
Additional Information:
Product Details:
Brand | Prok dv's |
Dimensions | Flush 96 x 96 x 70mm Din80 x 94 x 76mm ( W x H x D ) |
Current Setting Range | 300mA-12A -( MPEL-01 ), 30mA-3.0 A - ( MPEL-02) (18- steps .) |
Tripping Time | 0.0 Sec-5 Sec, Step size- 0.05Sec. |
Auxiliary Voltage | 85-275V AC/DC 415V & 550V. AC |
Prok dv’s brand earth leakage relay MPEL series uses the state of the art microcontroller based protection device to detect low level leakage due to degradation of insulation of phase conductors or high impedance faults. The main feature of MPEL is the continuous display of earth leakage currents of the power system. The unit is immune to external disturbance like harmonics and transients.
Additional Information:
Product Details:
Brand | Prok dv's |
Tripping Time | 0.0 Sec-5 Sec,Step size- 0.05Sec. |
Auxiliary Voltage | 85-275V AC/DC,415V & 550V. AC |
Mounting | Flush / Din |
Dimension | Flush 96 x 96 x 70mm Din80 x 94 x 76mm ( W x H x D ) |
Current Setting Range | 300mA-12A -( MPEL-01 ),30mA-3.0 A - ( MPEL-02) (18- steps .) |
Installation Procedure For Earth Leakage Relay Cbct:
Check the sensitivity of Earth Leakage Relay and also the inner diameter of core balance current transformer.
The Serial No. of the ELR and CBCT should match for better performance (the performance shall be guaranteed if the serial no. of the ELR and CBCT are matched).
Check the Auxiliary Supply of ELR and proper Voltage i.e. the rated Auxiliary Voltage.
The ELR have one pair of potential free change over contact for tripping purpose. Use rated current and rated voltage (refer the specification of our product). One pair of change over contact i.e., N/O Contact and N/C Contact can be used depending upon the tripping management.
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.
Transducer Output- (4 mA-20mA) (optional).
External Test, Reset, Fault & Healthy indication suitable for Mining application.
Applications:
Frame leakage protection for LT control panels and switchboards
Earth leakage protection for feeders
Protection for hazardous sensitive environments like oil refineries/chemical platform/pulp industries and general electrical distribution also where drives and soft starters are used.
Protection for mining and control engineering
Protection for Marine and control engineering
Additional Information:
Product Details:
Brand | Prok dv's |
Tripping Time | 0.0 Sec-5 Sec,Step size- 0.05Sec. |
Auxiliary Voltage | 85-275V AC/DC 415V & 550V. AC |
Contact Rating | 8A 250V AC/ 8A 30V DC 2C/O |
Dimension | Flush 96 x 96 x 70mm Din80 x 94 x 76mm ( W x H x D ) |
Current Setting Range | 300mA-12A -( MPEL-01 ),30mA-3.0 A - ( MPEL-02) (18- steps .) |
The rise of leakage current in Electrical Power Distribution are quite dangerous, resulting in Electrical hazards and catastrophe. Leakage Current are due to deterioration of insulations, negligence of wire man, Bad wiring, Inferior / substandard usage of Electrical Materials , ageing or endurance of Electrical environment. First and foremost importance should be given for the proper earthing of electrical net work-system. Most of the Industries, Commercial establishment and domestic application the earthing of electrical system is ignored and improper maintenance of the same. The Earth Leakage Current are very low and are sensitive leakage current can be detected by Earth Leakage Relay and core balance current transformer. ELR detects the Leakage Current in the circuit and isolate the power supply by switching off the tripping device (circuit breaker / contactor etc).
Features:
Microcontroller based compact design
Continuous monitoring and display of set value and measured value of leakage current
8 character 2line LCD displays with back lit
Test & Reset facility
CBCT connection monitoring facility
True Rms measurement of leakage current
Trip Circuit Failure indication (Optional) Default:Disabled
Serial RS 485 communication port with modbus protocol (optional)
Fault recording with date and time stampings, max up to 10 Faults (optional)
Tropicalised and rugged design
External test, reset, fault & healthy indication suitable for mining Application
High sensitive leakage current setting (5mA to 1.00A) (MODEL:MPELSPL)
Applications:
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
Additional Information:
Product Details:
Brand | Prok dv's |
Frequency | 50Hz or 60Hz |
Auxiliary Voltage Range | 85V - 275V AC/DC,21 - 130V DC |
Operating Temperature | - 5 deg to +55 deg C |
Relay Rated Current | 1A or 5A user selectable |
Prok dv's make PNA Type Idmt/Definite Time/Instantaneous Low-Set/High-Set Nondirectiona Numerical/Microprocessor Based Over Current Relay (Ocr) With Earth Fault Relay (EFR) or independent over current Relay (OCR) or earth fault relay (EFR). This is intended for protection application in medium voltage networks. These networks may have isolated or resistance impedance earthed or solidly earthed neutral points. Definite time over current relays are both suited for isolated systems and for use as back up to differential relays and distance relays. Inverse time relays (over current relays with various inverse times - current characteristics) are advantageous for interconnected systems and solidly grounded systems. Another tool for reducing the tripping time for faults near the source is to use the added instantaneous ( high set ) feature in the numeric relay .if the fault occurs during the setting of relay ,the relay shall operate / trip for the previously selected / default settings.
Additional Information:
Product Details:
Brand | Prok dv's |
Frequency | 50Hz or 60Hz |
Relay Rated Current | 1A or 5A user selectable (In) |
Auxiliary Voltage Range | 85V - 275V AC/DC,21 - 130V DC |
Operating Temperature | - 5 deg to +55 deg C |
Panel Cut Out | 151 x 157 mm + 0.1mm |
Relay has modbus protocol with RS 485 port with baud rate 9600bps. Another model is established for special applications with baud rate115kbps.Relay records 99 faults with date and time. Relay rating (In) is field selectable- either 1A/5A.The output relays are configurable Configurable options for enabling & disabling of high-set in both Phase & earth.
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 function
Password protection
Enabling /Disabling o f High-Set
RS-485 communication port with modbus protocol
High Drop-off/Pick-up ratio
Poly carbonate front cover with external reset switch
Consistent repeat accuracy
Additional Information:
Product Details:
Brand | Prok dv's |
Frequency Range | 50/60 Hz |
Auxiliary Power Supply | 85-275 V AC/DC |
Pick up Accuracy | +/-12.5 % |
Dimension | 70x55x108 mm(WxHxD) |
Operating Temperature | 0 deg C to + 55 deg C |
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 tripping time. 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.
Additional Information:
Product Details:
Brand | Prok dv's |
Auxiliary Power Supply | 85-275 V AC/DC |
Pick Up Accuracy | +/-12.5 % |
Current | 20-64A |
Frequency Range | 50/60 Hz |
Dimension | 70x55x108 mm(WxHxD) |
Operating Temperature | 0 deg C to + 55 deg C |
Prok dv’s make Microcontroller Based Motor Protection Relay continuously monitoring Real Time Motor Current of all the Three Phases. When the Motor Current exceeds the set value Im, the relay issues a trip command after the calculated time elapse (Based on selection of trip Class). The relay visually indicating the fault trip status by means of LED’s.
Two Set of potential free output changeover contact is provided in the relay C& NC and C& NO for trip circuit .The relay continuously monitors the Currents and using this data it builds Thermal replica of the Motor and monitoring the Thermal status of the Motor. This information is used to protect the Motor against Thermal over Loading.
Features:
Over Load Current Setting Range 1.0Amps – 96.0Amps in 4 ranges as explained in SL.13
Trip Time Characteristics Class -10A, 10, 20 &30 as per IEC 947-4-1(Default: Trip class 20) if none of the trip class selected by means of Dip switch
Thermal overload pick up above 105 % of Im indication through blinking of TOL led
Provided the Thermal Replica for Motor over load
Thermal overload pick up status I> indicated through visual LED indication
Additional Information:
Product Details:
Dimension | 144 x 144 x 120 mm ( H x W x D) |
Aux Supply | 85-275V AC/DC |
Indication | 16 Character back-lit LCD Display |
CT Burden | 0.25VA |
Capacitor Stage | 4,6,8,10 & 12 stages |
Switching Time | 60 Seconds |
Panel Cut Out Size | 137 x 137 mm |
RISC architecture based, intelligent state-of-the-art PNPF Prok dv's make Digital Microcontroller based Intelligent Automatic Power Factor Controller/Regulator/Correction Relay (APFCR) with on-line monitoring of line PF through industrial grade back-lit LCD Display. The Unit uses one of the tried and time tested intelligent algorithms to switch the capacitor banks, in a most optimum combination in a shortest time for any dynamic load conditions without the need to select the complicated switching sequences by the user.
Features:
User entered parameter is stored in non-volatile memory (EEprom)
CT Ratio & System Voltage user selectable through key board display
Independent of Frequency
Most Optimum combination obtained through advanced control programming
RISC architecture dedicated Microcontroller based
Target pf 0.80lag to 0.90 lead selectable through key board display
Auto/Manual mode
No complicated setting procedure
User friendly interface
Additional Information:
Product Details:
Brand | Prok dv's |
Weight | 1 kg |
Frequency | Suitable for 50Hz/60Hz |
Protection | IP54 |
Auxiliary Voltage | 24-260 V/24 V-360 V DC |
PNVNSP range of relays provide reliable and high
performance protection. The PNVNSP is a relay for AC Voltage supervision with universal application, it protects the three phase network against over, under voltage, unbalance or earth faults in
isolated networks. Beside the pure RMS value measurement
of the line voltage the PNVNSP evaluates the symmetrical
components (U1, U2 & U0 sequence system). By evaluating
these components relay PNVNSP can detect the phase
sequence, voltage unbalance and earth faults.
Additional Information:
Product Details:
Brand | Prok dv's |
Contact Rang | 1 C/O or 2C/O,6A-230VAC |
Indication | Display of the Magnitude and nature of fault by LCD an d LED indication for relay trip |
Model Dimension | 144x144x120 mm [H x W x D] |
Cut Out Dimension | 137 mmx137 mm |
Aux Voltage | 85 to 275V A C/DC |
All the line voltages are monitored and sensed simultaneously using three independent scale down potential transducer this low level ac signal is subjected to signal condition, which includes surge suppressors and harmonic filter, filtered signal is fed to the ADC of the industrial grade pic micro controller, When the sensing voltage level exceeds the user set value f or under or over voltage, Digital Microcontroller based definite-time under voltage(uv) and over voltage (ov) relay/line voltage monitor(LVM) gives an output signal in the form of relay change over for tripping/alarming.
Additional Information:
Product Details:
Brand | Prok dv's |
Trip Level | 4 % - 20 % in Steps of 1% |
Delay | 0 - 20 Sec in Steps of 0.1 Sec |
Sensing Voltage Range | 50 - 500V |
Frequency Range | 40 - 60 Hz |
Auxiliary Supply | 85 - 275 V AC/DC |
Rated Current | 5 Amps |
Additional Information:
Product Details:
Brand | Prok dv's |
Rated System Voltage | 415V AC |
Voltage Setting Range | (1-50) Volts in steps of 1V |
Output Relay | 230VAC 5Amp /24VDC 5Amp |
Display | 8 chars 2 line LCD with backlit |
Mounting | Flush mounting |
Prok Dvs an ISO 9001:2008 Company indigenously develops the power system protection relays and panel meters for power system. μP based Zero sequence voltage relays are the state of the art design, to monitor and protect the costly equipments against unbalance voltages.
The Relay Continuously monitoring all the three phase Line to Line Voltages, if any abnormal condition persists in the system internal Relay activated with predetermined set value of definite time.
The Unit Displays Line to Line Voltages on LCD display, Healthy and Fault /Trip status Information through LED Display.
Additional Information:
Product Details:
Brand | Prok dv's |
Frequency | 50Hz or 60Hz |
Operating Temperature | - 5 deg C +55 deg C |
Relay Rated Current | 1A Or 5A User Selectable (In) |
Panel Cut Out | 151 x 157 mm + 0.1mm |
Contact Rating | AC 250 V @ 30 AMP,DC 24 V @ 30 AMPS,2 C/O or 3 C/O |
PNA Type Idmt/Definite Time/Instantaneous Low-Set/High-Set Directional Numerical/Microprocessor Based Over Current Relay (Oct) With Earth Fault Relay (EFR) receives the input current signals (phase current and neutral current) via four input current transformers. These signals are galvanically de-coupled, suitably filtered and fed to the micro-controller, for amplitude calculation and further logical processing.
Additional Information:
Product Details:
Brand | Prok dv's |
Aux Voltage | 85 to 275V A C/DC |
Indication | Display of the Magnitude and nature of fault by LCD an d LED indication for relay trip |
Model Dimension | 144x144x120mm [H x W x D] |
Cut Out Dimension | 137 mmx137mm |
Phase | 3 Phase 4 Wire,3 Phase 3 Wire |
Additional Information: