Frequency Relays Dealers

Features Two stage of frequency protection Digital display of line frequency Draw out case 144x144 mm Principle of Operation:   The JRF 014 is microprocessor based frequency relay The relay can be configured for 2 stage under frequency relay, two stage over frequency relay or Under / Over frequency relay. The relay's operating time can be programmed. The relay measures line frequency and if it exceeds the set threshold in case of over frequency or if it is less than set threshold in case of under frequency then relay extends a trip signal after an operating time.

• Supply Voltage: 3 Phase 415 VAC, 50 Hz (R, Y, B &N) (No auxiliary 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)
• 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.

Micro controller based technology. Voltage protection along with digital voltage readout. Wide range of supply variation. Unit will also works on any one phase is present. Protection against Under Voltage. Protection against Over Voltage. Single Phasing & Reverse Phasing protection. Control output All the set points settable by keys. Phase unbalance protection. Trip Delay for Under voltage & Unbalance is settable Reverse Phasing Protection can be able to bypass through settings. Indications for Low Voltage , High Voltage, SPP & Relay ON . Message Display for SPP, Reverse Phasing & Unbalance Faults. No separate auxiliary supply required. Hold feature:- Press INC key in Running condition to observe particular supply voltage 1) If the input supply is within the range of the fault limit limits then On Timer starts decrementing on display & after set on Time over Relay will de ON with RLY indication glowing  2)If OV , UV, OF, UF, SPP/ reverse phasing / Unbalance occurs in the supply then relay will be OFF after the trip delay of that particular fault & LED starts blinking 3) If any phase to Voltage increases above OV set point belay will trip after trip delay (100)ms ) over .If that particular phase to phase voltage reduces below COV set point Relay will be on after the set rest delay is over 4) If any Phase to Phase Voltage increases / reduces above / the UB set point compared to other two Phase to Phase voltages , Relay will trip after delay over If that particular phase to phase voltage reduces / increases below / above (UB set point -/+ 10-V ) relay will be ON after the set reset delay over If the frequency reduces below UF or increases above OF then the relay will trip . Hysteresis is 1H2 5)If any of the Phase fails , Relay will trip after trip delay (100ms) over If all phases are present , relay will be ON after the set reset delay is over 6) If Phase sequence is changed to R-B-Y/Y-R-B/B-R-Y; Relay will trip after the trip delay (100 ms) over . if phase sequence is corrected to R-Y-B, relay will after the delay over UB /SPP/REVP,UV,UF, OF.

• Power Consumption: 100 mW
• Manufacturer: Omron
• Manufacturer Part Number: G6K-2F-RF-DC5
• Coil Type: Non-Latching
• Part Status: Active
• Voltage Rating: 5 Vdc
• Current Rating: 1 Amp
• Contact Form: DPDT (2 Form C)
• Packaging: Tray
• Product Category: High Frequency / RF Relays
• Part Number: G6K-2F-RF-DC5
• Series: G6KRF
• RoHS status: RoHS compliant
• Contact Material: Silver (Ag) with Gold Plating

We follow strict quality strategy, guidelines and thus, to sustain good quality standards, we carry out stern examination of the raw inputs used at the initial stages. Consider our name for acquiring qualitative products in any quantity, safe and time-bound deliveries are what we ensure.

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 maintenance User selectable trip timings High performance Details: Dedicated microcontroller based Accurate, reliable and tropicalized design Continuous display of the measured frequency User selectable upper frequency and lower frequency limits User selectable trip timings Uses SMPS for Auxiliary Power i.e. Wide operating range for Auxiliary Input 85V-285V ACDC Specifications: Rated Voltage: 230V415V AC Auxiliary Supply: 85V-275V ACDC Frequency Setting Range: 40-60 Hz. In steps of 0.1 Hz Power Supply Burden: < 3Watts Contact: Single change over contacts For Under frequency 8 Amps@250V AC, 8 Amps@30VDC Potential free contacts Turn Off delay: 0.05-10.0 Sec In steps of 0.05sec Definite time, User selectable Dimensions: 144X144X120 mm Panel Cut Out: 137X137 mm Applications: Generator and captive power plant Over frequency relay applied as backup protection for mechanical over speed devices to avoid damages to prime mover Under frequency relay applied to protect field winding from excessive current, voltage regulator from over load Servo controller and inverters

• Frequency: 200Hz
• Diameter: 38 mm
• Weight: 12 Kg
• Centrifugal Force: 1500 n
• Intensity: 8A
• Length: 369 mm

• Frequency: 47 - 63Hz
• AC Input Range: 180V TO 270VAC
• Rhodium Plating: UP TO 3 Ltr. to 35 Ltr.
• Gold Plating Rectifier ranging from: 300W to 13KW

• Brand Name: ABB,ABB
• Voltage: 240V
• Specialities: High Performance, Durable
• Number of Poles: 5 Pole,2 Pole, 4 Pole
• Usage: Industrial
• Model Name/Number: VFT01
• Type: High Voltage Relay
• Coil Type: Latching, Non Latching
•  :  

• AC voltage rating: 110,220 VAC
• Auxiliary supply voltage: 30-220 V DC
•  Frequency setting range: 39.00 to 70. 00 Hz in step of .1Hz
• Operating voltage range    : 33 to 135 V the relay is block   below this limit
• No of tripped stage      : 2 for UFT -21   3 for UFT -31 4 for UFT- 41
• Reference frequency: 4 MHZ
• Accuracy    : + .03 Hz    
• Reset Ratio    : 100%    
• Timer Range    : .05 to 7.35 Sec. for under & over   Frequency stage.
• Burden:  
•  Aux Supply from PT    : 1.5 VA    
•  :  
• Aux Supply from external source: 1.5 VA max at 150 V
•  Aux DC (without tripping relays): 11 W for 4 stages
• Contacts in relay            : 3 pair of N/O contact make & carry   7500 VA for 0. 25 with maxima of 30 A & 300 VAC or DC Carry contentiously 5 A AC/DC. Break 1250 VA AC/50 W DC resistive, 25 W L/R = 0. 04 S. Subject to maxima of 5A & 300 V
• Test Voltage: 2 kv/50 Hz 1 min.   5kv 1.2/50 us
• Reduced values are valid   in case of repeat testing casing: Does not apply to the terminal connected to a common Aux supply.    
• Casing    : Flush mounting with rear connection   96x 192 / 192 x 192 x 200/250 mm W                    H                    D
• Guaranteed operation: – 10 + 55° C

• Relay contacts: 2 x changeover, volt-free.
• Dimensions: 90 x 52 x 64 mm.

This unit monitors the frequency of a single phase supply and operates a relay if the frequency goes above or below set levels. LEDs indicate power on and trip status. Two changeover, volt-free relays are fitted.Front panel controls allow selection of:

• Supply Voltage: 3 Phase 415 VAC, 50 Hz
• ON Delay: 1 to 60 sec.
• Operating Temperature range: 5 degree C to 60 degree C.

Protection of 3 Phase devices against Over voltage, Under voltage,(UB) Single Phasing,(SPP) Over Frequency, Under Frequency, Reverse Phasing & Unbalance supply are one of the major issues 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 maximum load burn-out is overloading,which occurs due to Unbalance Supply, Single Phasing or Reverse phasing conditions. VFR3P detects such conditions & protects the load from the burn out. 'Proton's VFR 3P' offers above protections along with 3 digit display showing R-Y,Y-B,B-R, voltages in scanning mode with precise accuracy. LowHigh voltage tripping to ensures trouble free running of 3-phase Loads, and also protection is provided against Over Under Frequency

• Theory: Numerical
• Brand Name: SIEMENS
• Certifications: IEC 61850 Certificate Level A1
• Port: Mumbai
• Protect Feature: Sealed
• Place of Origin: Maharashtra, India
• Model Number: 7RW80
• Packaging Details: Packaging Normal Box Dimensions 15*30*45 CM

We are the main supplier of this product.

• Specialities: Over / Under Frequency protection,Over / Under Voltage protection etc.

Three-Phase Frequency Relay with dfdt & dvdt Control Over Under Frequency protection, Over Under Voltage protection, dfdt protection, dvdt protection, Up to 16 user programmable output relays, Event recording, Modbus Communication Protocol

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, over regulator from overloadServo controller and invertors Specification Dedicated microcontroller based Accurate, reliable and tropicalized design Continuous display of the measured frequency User selectable upper frequency and lower frequency limits User selectable trip timings Uses SMPS for Auxiliary power i.e. Wide operating range for Auxiliary input 85-275C AC/DC

• Aux Supply: 230VAC (110VAC and 415 VAC Optional )
• Potential free NO-C-NC: 10 Amp at 250VAC Contacts
• Accuracy: +- 1 digit

A frequency variations involves a change in frequency from the normally stable utility frequency of 50 hz 60hz. This may be caused by erratic operation of emergency generators or unstable frequency power sources. MFR 8801 reads the frquency. Displays it and compares it with set frequency and trip the deviceif frequency read is out of selected range. General Features Easy installation Low frequency Setting in range 35 Hz to 65Hz in step of 0.5Hz High frequency Setting in range 35HZ to 65Hz in step of 0.5Hz Trip Delay Time Setting in range of 1 to 60 sec in step of 1 sec.

We are offering over frequency relay. Features two stage of frequency protection digital display of line frequency draw out case 144x144 mm.

ARGUS 8 range of numerical voltage and frequency relays have the power and flexibility of microprocessor technology, giving a wide range of settings which are supplemented by advanced features such as metering, data storage and Fibre-Optic communications. Supervisory and self-monitoring features give added confidence to the user as well as reduced maintenance and down time. A menu-based interface gives user friendly access to relay settings, meters and operational data Application Capacitor banks Ungrounded/ High impedance earthed systems AC generators Transmission lines Distribution feeders  

This project monitors the frequency fluctuations in power system and detects them. therefore we have designed a microcontroller based underover frequency relay. the under-frequency relay is used for automatic load shedding and restoration. the frequency of the system is continuously monitored by using digital monitoring and data acquisition system. the monitored frequency is displayed and depending on the value of the frequency, the required decision is taken by the microcontroller. this project, hardware as well as software for frequency relaying, has been developed. in this project we have used microcontroller 8051 for detecting the frequency fluctuations. when frequency goes below or above from desired value appropriate trip signal is generated in the form of leds. frequency variation also decreases the life of the equipment and directly affects the overall production of the plant. we can give an overview of the complete operation with the help of microcontroller 8051 kit having internal 8255 programmable peripheral interfaces, a zero cross detector and a smps or switched-mode power supply. a zcd converts the input sinusoidal signal to a square wave of the same frequency

• Smart design to fit on any standard mounting   channel.• Choice of screw less terminals•Total wireless interiors• + 2% Accuracy• Test & Auto/Manual Reset facility• Designed for high reliability, as relay energizes only   under fault conditions