Yokins Instruments Pvt Ltd Shalimar Bagh, Delhi

Additional Movement Type :   AC Moving Iron type for SO65.                             DC Moving Coil type for MO65, MO80, MO100, MO110.                             AC Moving coil type with Rectifier Circuit in all above models.Accuracy : ±1% of Full Scale for MO110                ±1.5% of Full Scale for MO100, MO80                ±2.5% of Full Scale for SO65 & MO65 Standards : IS-1248Size : Dimensional details below.Application : Mostly used in railways.                     Agricultural panels.                     Marine.                     Motor monitoring.

  We have three type of portable meters :- 1. Wooden box type.2. ABS Educational desk stand type 3. Metallic Educational desk stand typeWooden box type PortablesThese meters are heavy and sturdy meters. These type of Portable Ammeters and voltmeters are designed for use in the field test rooms and laboratories, where precise measurement is required. These portable Instruments can be used equally well in educational institutions, where there is possible misuse; and in factories, where these instruments are important for making calibration check on switchboard panel instruments.These are manufactured under rigid quality control to ensure stable performance and durability.       Features: -    Knife edge pointer and Anti-parallax mirror scale. -    Shock resistant pivot jewel movement. The pivots are made from carbon steel hard chrome plated and are mounted on spring loaded sapphire jewels. This ensures shock resistance due to vibrations in transit and minimum friction during use. -    Accuracy class 1.0% as per IS:1248 -    Wooden case with Bakelite Top. -    Wide window for easy reading. -    Quick response due to unique damping. -    General Characterstics -    Scale Length150mm(approx). -    Insulation Resistance Over 20 megaohms at 500 VDC. -    Sensitivity 1000 ohms/V for DC Meters. -    Test Voltage 2000V AC (rms)for 1 minute. Additional These are available in moving iron & moving coil type.MOVING IRON INSTRUMENTSRated Accuracy :Class 1.0 (1% of full scale value) as per IS:1248 between 10%-100% of scale.MOVING COIL DC INSTRUMENTSRated Accuracy :Class 1.0 ( 1% of full scale value) as per IS:1248 between 15%-100% of scale.MOVING COIL AC RECTIFIER TYPE INSTRUMENTSRated Accuracy :Class 2.5 (2.5% of full scale value) as per IS:1248 between 25%-100% of scale.PORTABLE POW> +/-3 degree (Electrical) as per IS:1248 for power factor meters.PORTABLE WATTMETERS - DYNAMOMETER TYPERated Accuracy :+/-1.0% of full scale value as per IS:1248 between 10%-100% of the scale for single phase (Unity Power factor) UPF wattmeters. +/-1.5% of full scale value as per IS:1248 for Three phase watt-meters. +/-1.5% of full scale value as per IS: 1248 for 0.2 PF (LPF) single phase wattmeters.ABS Educational desk stand typeIt houses SO65/MO65(round series) model generally used in educational purpose. These meters have accuracy of 2.5%. And available in variants of single and double range.Metallic Educational desk stand typeIt houses AC65(R)/DC65(R) (phoenix series) model generally used in educational purpose. These meters have accuracy of 2.5%. These meters can be provided with upto 5 ranges in a single meter.

  Rear mounting rectangular meters.       Features: -    AC Moving Iron type for AC65(R) -    DC Moving Coil type for DC65(R), DC70(R), DC90(R) & DC120(R) -    AC Moving coil type with Rectifier Circuit in all above models Additional Accuracy : ±1.5% of Full Scale for DC70(R), DC90(R) & DC120(R) ±2.5% of Full Scale for AC65(R) & DC65(R)Standard : IS-1248Size : Dimensional data below.Application : • Marine X ray machines.• Switchgear.• Distribution systems.• Control panels.• Embedded generation.• Energy management.• Building management.• Utility power monitoring.• Process control.• Motor monitoring.   

  Flush mounting rectangular meters.        Features: -    AC Moving Iron type for ACF65 and ACF80 -    DC Moving Coil type for DCF65, DCF80, DCF100 -    AC Moving coil type with Rectifier Circuit in all above models Additional Accuracy : ±1.5% of Full Scale for DCF80 and DCF100.±2.5% of Full Scale for ACF65, DCF65 & ACF80.Standards : IS-1248Size : Dimensional details below.Application :• Marine• X-ray machine• Switchgear• Distribution systems• Control panels• Embedded generation• Energy management• Building management• Utility power monitoring• Process ControlMotor Monitoring

Our Powerfactor and wattmeters are based on dynamometric principle and comes in both single phase and three phase models.Dynamometric instruments for measurement of absolute power in single phase and three phase systems for balanced/unbalanced load conditions.   Additional Movement Type : Current coil in series of load & pressure coil across the load. Work on “Air cored Electro-Dynamometric” principle.Range :  Current (A) : 1A to 10A AC Direct and for higher ranges through CT/1A or /5A              Voltage (V) : 110V / 220V/ 440V and through PT for Higher VoltageStandards :  IS-1248Accuracy : WattMeter : ±1.5% of Full Scale                  Powerfactor Meter : ±2° Phase AngleSize : 96x96mm, 144x144mm

  The vibrating reed frequency meter has steel reed elements placed in the field of an electromagnet. The reeds vibrate in resonance with the energizing Alternating Current of this electromagnet.Only the individual reed, whose natural frequency corresponds with the frequency of the A.C. supply, will vibrate at full amplitude indicating the correct frequency on the dial. When two reeds show deflection of the same amplitude the mean of the two gives the correct frequency.    Additional Available in sizes : 72mm, 96mm & 144mm square panel mounting type.Range : 45-50-55 Hz.Voltage : 110V or 230V or 440V.Accuracy : ± 1.5% as per IS 1248/83.

  Parameter Displayed : Voltage (Line to Line and Line to neutral), Current , Frequency ,RPM, Run hours       Features: -    Predefined CT primary ranges can be selected from 5A to 800A. -     3 digit 3 line seven segment display. -    Run Hour displayed in 5 digit hour and minutes format. -    Simultaneous display of 3 instantaneous parameters. Additional Accuracy : Class 1.0

YI-522     Features: -    Single phase and three phase programmable -    Microcontroller based meters with low VA burden -    4 digit 3 line seven segment display -    CT primary range 1A to 50kA AC programmable -    CT Secondary range 0.5A to 5A - AC programmable -    PT primary range 50V to 500kV AC programmable -    PT Secondary 50V to 500V AC programmable -    Run Hour displayed in 8 digit hour and minutes format -    Simultaneous display of 3 instantaneous parameters -    Password protected -    True RMS measurement of parameters -    Auto scaling of parameter values -    Auto/Manual scrolling of parameters -    Three switches for easy onsite programming. -    Touch proof voltage & current terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. Additional Auxiliary Supply : Universal Auxiliary(90-300V AC) Supply (Other supply voltages on demand).Accuracy : Class 1.0 or Class 0.5.Standard : IEC62053-21/22.Inputs : Voltage (upto 500V) Current Secondary(5A). Dimension : 96x96x57 mm.Panel Cutout : 92mm x 92mm..Standards for enclosure: IP-20(Back), IP-65(Front). Optional - RS-485 standard, communication capability using modbus RTU protocol.- Relay Output.

  Frequencies are measured with a built in electronic transducer & moving coil indicator. The movement of meter can be of 90° or 240°. The pointer is used to depict the frequency as in all moving coil metersFrequencies are measured with a built in electronic transducer & moving coil indicator. The movement of meter can be of 90° or 240°. The pointer is used to depict the frequency as in all moving coil meters.Frequencies are measured with a built in electronic transducer & moving coil indicator. The movement of meter can be of 90° or 240°. The pointer is used to depict the frequency as in all moving coil meters   Additonal Available in sizes : 72mm, 96mm & 144mm square panel mounting type.Range : 45-50-55 Hz.Voltage : 110V or 230V or 440V.Accuracy : ± 1.5% as per IS 1248/83.

Parameter displayed : Line to Line Voltage(RY, YB & BR), Line to Neutral Voltage Phasewise, Line to Neutral Voltage Average and System Frequency.     Features: -    Microcontroller based meters with low VA burden. -    4 digit seven segment display. -    PT primary range 50V to 500kV AC programmable. -    PT Secondary 50V to 500V AC programmable. -    Password protected. -    True RMS measurement of parameters. -    Auto scaling of parameter values. -    Auto/Manual scrolling of parameters. -    Two switches for easy onsite programming. -    Touch proof voltage & current terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. -    Voltage displayed with Kilo indication. Additional Auxiliary Supply : Universal Auxiliary(90-300V AC) Supply (Other supply voltages on demand).Accuracy : Class 1.0 or Class 0.5.Standard : IEC62053-21/22.Inputs : Voltage (upto 500V). Dimension : 96x96x57 mm.Panel Cutout : 92mm x 92mm.Standards for enclosure : IP-20(Back), IP-65(Front). Optional - RS-485 standard, communication capability using modbus RTU protocol.- Relay Output.

Three Phase Dual Source YI-536 Parameter displayed : Active Energy(Wh)     Features: -    Microcontroller based meters with low VA burden -    6 digit seven segment display -    CT primary range 1A to 50kA AC programmable -    CT Secondary range 0.5A to 5A - AC programmable -    PT primary range 50V to 500kV AC programmable -    PT Secondary 50V to 500V AC programmable -    Password protected -    True RMS measurement of parameters -    Auto scaling of parameter values -    Auto/Manual scrolling of parameters -    Three switches for easy onsite programming. -    Touch proof voltage & current terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. -    Load hour for secondary source(DG) are displayed in dual energy meter -    Smart Voltage sensing(AC & DC)of secondary source in dual energy meter -    Watt Hour displayed with Kilo and Mega indication Optional - RS-485 standard, communication capability using modbus RTU protocol.- Relay Output.

Dimension : 96x96x57 mm

Material : tape wound

CT Ratio : 5A- 5000A

Brand Name : YOKINS

  Parameter displayed : AC Voltage, Frequency.       Features: -    Microcontroller based meters with low VA burden. -    True RMS measurement of parameters. -    4 digit seven segment display. -    PT primary range 50V to 500kV AC programmable. -    PT Secondary 50V to 500V AC programmable. -    Password protected. -    Auto scaling of parameter values. -    Auto/Manual scrolling of parameters. -    Two switches for easy onsite programming. -    Touch proof voltage terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. -    Voltage displayed with Kilo indication. Additional Auxiliary Supply : Universal Auxiliary(90-300V AC) Supply (Other supply voltages on demand).Accuracy : Class 1.0 or Class 0.5Standard : IEC62053-21/22.Inputs : Voltage (upto 500V).Dimension : 96x96x57 mm.Panel Cutout : 92mm x 92mm.Standards for enclosure : IP-20(Back), IP-65(Front). Optional - RS-485 standard, communication capability using modbus RTU protocol.- Relay Output.

Parameter displayed : Active Energy(Wh)     Features: -    Microcontroller based meters with low VA burden -    6 digit seven segment display -    CT primary range 1A to 50kA AC programmable -    CT Secondary range 0.5A to 5A - AC programmable -    PT primary range 50V to 500kV AC programmable -    PT Secondary 50V to 500V AC programmable -    Password protected -    True RMS measurement of parameters -    Auto scaling of parameter values -    Auto/Manual scrolling of parameters -    Three switches for easy onsite programming. -    Touch proof voltage & current terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. -    Watt Hour displayed with Kilo and Mega indication Optional - RS-485 standard, communication capability using modbus RTU protocol. - Relay Output.

Single Phase Dual Source YI-535 Parameter displayed : Active Energy(Wh)     Features: -    Microcontroller based meters with low VA burden. -    6 digit seven segment display. -    CT primary range 1A to 50kA AC programmable . -    CT Secondary range 0.5A to 5A - AC programmable . -    PT primary range 50V to 500kV AC programmable. -    PT Secondary 50V to 500V AC programmable. -    Password protected. -    True RMS measurement of parameters. -    Auto scaling of parameter values. -    Auto/Manual scrolling of parameters. -    Three switches for easy onsite programming. -    Touch proof voltage & current terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. -    Load hour for secondary source(DG) are displayed in dual energy meter. -    Smart Voltage sensing(AC & DC)of secondary source in dual energy meter. -    Watt Hour displayed with Kilo and Mega indication. Additional Auxiliary Supply : Universal Auxiliary(90-300V AC) Supply (Other supply voltages on demand).Accuracy : Class 1.0 or Class 0.5.Standard : IEC62053-21/22.Inputs : Voltage (upto 500V) Current Secondary(5A).Dimension : 96x96x57 mm.Panel Cutout : 92mm x 92mm.Standards for enclosure : IP-20(Back), IP-65(Front). Optional - RS-485 standard, communication capability using modbus RTU protocol.- Relay Output.

Parameter displayed : AC Current     Features: -    Microcontroller based meters with low VA burden. -    4 digit seven segment display. -    CT primary range 1A to 50kA AC programmable. -    CT Secondary range 0.5A to 5A - AC programmable. -    Password protected. -    True RMS measurement of parameters. -    Auto scaling of parameter values. -    Two switches for easy onsite programming. -    Touch proof voltage & current terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. -    Current displayed with Kilo indication. Additional Auxiliary Supply : Universal Auxiliary(90-300V AC) Supply (Other supply voltages on demand).Accuracy : Class 1.0 or Class 0.5Standard : IEC62053-21/22.Inputs : Current Secondary(5A). Dimension : 96x96x57 mm.Panel Cutout : 92mm x 92mm.Standards for enclosure : IP-20(Back), IP-65(Front). Optional - RS-485 standard, communication capability using modbus RTU protocol- Relay Output.

The Yokins shunts are available from 1A up to 15000A with an accuracy of 0.5% & 1% as per ISI248. Standard voltage drop is 50mV, 60mV & 75mV. Intermediate current ratings, other voltage outputs, better accuracy and purpose built shunts can be supplied.ApplicationShunts provide an accurate DC milli volt signal to drive ammeter indicators, overload protection and control devices, especially for higher amperage. It supplies Voltage drop proportional to the DC current which is measured and indicated by a moving-coil milli voltmeter with the dial calibrated in Amps.Operating principleA current passing through the Shunt produces a proportional voltage drop. A moving coil instrument connected to shunt measures the voltage drop across the shunt terminals.Shunts are calibrated in such a way that they produce an accurately defined voltage drop (50mV, 60mV, 75mV and 150mV).  Compact Low cost shuntsWe offer compact low cost shunts as well. These shunts are often requested for special applications for small size or low cost applications. We generally recommend continuous load of ½ or 2/3 times the rated current, in these shunts. These can also be provided from 1A upto 15000A with an accuracy of 0.5% & 1%. Standard voltage drop applicable is 50mV, 60mV & 75mV.     Technical Specification for shunts as per IS 1248 :  

Color : as required

The vibrating reed frequency meter has steel reed elements placed in the field of an electromagnet. The reeds vibrate in resonance with the energizing Alternating Current of this electromagnet. Only the individual reed, whose natural frequency corresponds with the frequency of the A.C. supply, will vibrate at full amplitude indicating the correct frequency on the dial. When two reeds show deflection of the same amplitude the mean of the two gives the correct frequency. Moving Coil Meter of 90 degree or 240 degree Deflection with Fixed Interchangeable Scale Facility.

Voltage : 110V or 230V or 440V.

Parameter displayed : Voltage(Line to Line and Line to neutral), Current, Frequency, Power Factor(Pf), kW, kVA, kVAr, RPM, Run hours, Load hours.     Features: -    Microcontroller based meters with low VA burden. -    4 digit 3 line seven segment display . -    CT primary range 1A to 50kA AC programmable . -    CT Secondary range 0.5A to 5A - AC programmable . -    PT primary range 50V to 500kV AC programmable. -    PT Secondary 50V to 500V AC programmable. -    Run Hour displayed in 8 digit hour and minutes format. -    Simultaneous display of 3 instantaneous parameters. -    Password protected. -    True RMS measurement of parameters. -    Auto scaling of parameter values. -    Auto/Manual scrolling of parameters. -    Three switches for easy onsite programming. -    Touch proof voltage & current terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. Optional - RS-485 standard, communication capability using modbus RTU protocol. - Relay Output.

Parameter displayed : Active Energy(Wh), Pf, Active Power(kW), Voltage(Line to Line & Line to Neutral), Current, Frequency.     Features: -    Microcontroller based meters with low VA burden. -    6 digit seven segment display. -    CT primary range 1A to 50kA AC programmable. -    CT Secondary range 0.5A to 5A - AC programmable . -    PT primary range 50V to 500kV AC programmable. -    PT Secondary 50V to 500V AC programmable. -    Password protected. -    True RMS measurement of parameters. -    Auto scaling of parameter values. -    Auto/Manual scrolling of parameters. -    Three switches for easy onsite programming. -    Touch proof voltage & current terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. -    Load hour for secondary source(DG) are displayed in dual energy meter. -    Smart Voltage sensing(AC & DC)of secondary source in dual energy meter. -    Watt Hour displayed with Kilo and Mega indication. Additional Auxiliary Supply : Universal Auxiliary(90-300V AC) Supply (Other supply voltages on demand).Accuracy : Class 1.0 or Class 0.5.Standard : IEC62053-21/22.Inputs : Voltage (upto 500V) Current Secondary(5A). Dimension : 96x96x57 mm.Panel Cutout : 92mm x 92mm.Standards for enclosure : IP-20(Back), IP-65(Front). Optional - RS-485 standard, communication capability using modbus RTU protocol- Relay Output.

Multi Parameter Dual Source YI-537 Parameter displayed : Active Energy(Wh), Pf, Active Power(kW), Voltage(Line to Line & Line to Neutral), Current, Frequency.     Features: -    Microcontroller based meters with low VA burden. -    6 digit seven segment display. -    CT primary range 1A to 50kA AC programmable. -    CT Secondary range 0.5A to 5A - AC programmable . -    PT primary range 50V to 500kV AC programmable. -    PT Secondary 50V to 500V AC programmable. -    Password protected. -    True RMS measurement of parameters. -    Auto scaling of parameter values. -    Auto/Manual scrolling of parameters. -    Three switches for easy onsite programming. -    Touch proof voltage & current terminals. -    Compact size and light weight. -    ABS dust-proof rugged casing. -    Load hour for secondary source(DG) are displayed in dual energy meter. -    Smart Voltage sensing(AC & DC)of secondary source in dual energy meter. -    Watt Hour displayed with Kilo and Mega indication. Optional - RS-485 standard, communication capability using modbus RTU protocol- Relay Output.

Dimension : 96x96x57 mm

    Moving Iron Instruments are generally used for measuring AC Voltages and Currents. These are repulsion type moving iron system having high torque to weight ratio. Instruments are highly damped with best jewel bearings, incorporated with hardened and precisely polished pivots and chemically treated hair springs for corrosion protection. An efficient system of fluid damping is employed. The movement is efficiently shielded against the effect of external magnetic fields.Moving Iron Meter of 90 degree Deflection with Fixed/Interchangeable Scale Facility.   Additional Movement Type : Moving Iron type with Jewel Bearing Suspension.Range : Current (A) : 0 - 1A to 0 - 100A (Direct), Through CT/1A or /5A for Higher Currents and suppressed scale meters with ratio of maximum 1:6.              Voltage (V) : 0 - 10V to 0 - 750V (Direct), Through PT for Higher Voltages.Size : 48x48mm , 72x72mm , 96x96mm , 144x144mm.Standards : IS-1248.Accuracy :  ±1.5% of Full Scale for all except SR48.                  ±2.5% of Full Scale for SR48. Optional Square Size Meters :