Mahesh Electrical Instruments
Mumbai, Maharashtra
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Electrical Measuring Instruments

Our range of products include Electrical Measuring Instruments such as D.C. Shunt, Load Bank, Induction Load, Cell Tester, Edm Meters / Educational Desk Meters, Electro-dynamometer Type Wattmeter and many more items.

The D.C. Shunt (or ME shunts) available with us are ideal for current ratings from 5 to 10000 Amps and mill volt drops of 75 millivolts. The product conforms to IS Standards 1248 and is provided with leads of 0.025 ohms. Some of its construction features are cited below:
  • It consists of Mangenin rods, soldered or silver brazed, to brass end blocks.
  • It is artificially aged after manufacture; followed by tests on full load.
  • Lead resistance is considered while calibrating the instrument
  • Salient features of the ME Shunts are as follows:
  • Class 1 accuracy
  • Temperature Co-Efficient
  • 0.002% per degree centigrade, above ambient temperature in still air, with free ventilation
  • Temperature not exceeding 120°C at the center and 90°C at the ends
  • The ME Shunts withstand temperatures up to 120oC; without any permanent alterations in physical or electrical properties
  • Overloads and faults due to high temperatures (>120oC) can be safely handled
  • All 75 millivolts drop shunts of class 1, withstand the following overload requirements:
  • 2 X rated current for 3 minutes
  • 4 X rated current for 30 seconds
  • 10 X rated current for 5 seconds

  • We manufacture and export high class ME Load Bank, which is a single phase and three phase variable Lamp or resistor or capacitor load and is housed in a metal case. It is used for stimulating load conditions to test Voltmeters, Ammeters and Watt meters, using load switches provided on the bench. The total simulated load is the sum of loads of all 'ON' switches. Construction Features: The ME Load Banks are provided with:
  • Castor wheels for easy handling
  • Ammeters and Voltmeter on front panel to indicate the current and voltage respectively
  • Heavy-duty Porcelain switches with bake lite top and inner brass contact for safety
  • Specifications:
  • Input main voltage: 230/440vac.
  • Voltmeter range: 0-300/500v ac
  • Ammeter Range: 0-5/10/15/25aac
  • Load range: 1/2/3/5/10 kw
  • Load type: Bulb / Resistance / Capacitor / Induction Load

  • The ME Induction Load manufactured by us is a single phase and three phase variable induction load that is housed in a metal case provided with Castor wheels for easy handling. The instrument is used for varying current, which is measured on Ammeter(s).
  • When rotating knob is rotated in clockwise direction, the coils are kept in closed position.
  • When rotating knob is rotated in anticlockwise direction, the coils are kept in opened position.
  • Specifications:
  • Input Main Voltage: 230/440V AC
  • Voltmeter Range: 0-300/500V
  • AC Ammeter Range: 0-5/10/15/25AAC
  • Load Range: 1/2/3/5/10 KW
  • Load Type: Induction Load

  • Cell Tester is one of our highly demanded electrical instruments. It is used to check battery voltage in following:
  • Automobiles
  • Laboratories and other applications
  • Its attributes related to its construction are as follows:
  • Center zero dial of 65mm diameter, for voltage reading with polarity indication
  • Terminal spike, fitted on the top of instrument. It can be directly connected to one of the battery terminals
  • 150mm long insulated prod with flexible test lead. It can be connected to other battery terminal
  • Specifications:
  • Range: 3-0-3 volts (6-0-6v to 30-0-30 volts also available, upon request)
  • Accuracy: ± 2.5% of F.S.D
  • Meter: Permanent magnet moving coil type of DC volt meter, with center zero scales of 60 divisions and external zero adjuster. Housed in black abs back-lite moulded cabinet
  • Sensitivity: 1000 ohms per volt
  • Weight: 200 grams approx


    AC or DC Panel Meters of size 65mm Round/ are mounted in Black coloured Plastic Moulded Desk, These Meters are provided with Insulated Terminals for safety, These Meters are specially used in Institutes and Testing Laboratories.



    Single Phase Single Element

    Three Phase Double Element Three Wire

    Three Phase Three Element Four Wire


    UPF (Unity Power Factor) Watt Meter or

    LPF (Low Power Factor) Watt Meter


    Current Ranges Available : 1A, 2A, 5A, 10A, 20A

    Voltage Ranges Available : Any Volts from 50-600V


    Portable type Wattmeters are available in Multi-range also.



    Single Phase Single Element

    Three Phase Double Element Three Wire

    Three Phase Three Element Four Wire


    Current Ranges Available : 1A, 2A, 5A, 10A, 20A

    Voltage Ranges Available : Any Volts from 50-600V


    Power Factor Range : upto 0.2 (Lead) – 1.0 (Unity) – 0.2(Lag)


    Portable type Wattmeters are available in Multi-range also.


    ME Frequency Meters are vibrating reed type meters and are very elegant and compact


    Range : -

    45-50-55 Hertz.


    Operating Voltage : -

    Choice of 240 or 415 Volts 20%,

    45 to 55 Hertz.


    Over All Size : -

    96 x 96 x 60mm / 72 x 72 x 60mm


    Weight ( approximately)

    800 gms. 

    With our vast, fruitful experience in the field of manufacturing various electrical instruments, we present our clients with our unique instrument, Panel Meter. The ME panel meters are used on following items:
  • Switch Board
  • Motor
  • Control Gears
  • Control Panels
  • The product serve the purpose of measuring electrical quantities such as Current, Voltage, Power (Active, Reactive) or the Power factor of meter. They can be moving coil, moving iron or dynamo-meter type; having a method of indication through deflecting pointer only. We manufacture top class Panel Meter, to meet the requirements of IS 1248/83. Their salient features include:
  • Made from Best Quality Material
  • Light in Weight
  • Negligible Power Loss
  • Rugged Construction
  • Adequate Size of Stamping (Allows easy readability from a distance)
  • Adequately Plated Metal Parts for Tropical Condition
  • Effective Shield against External Magnetic Effects and Electrostatic Influences
  • Satisfactory Performance over a long period

  • The Portable Meter manufactured by us is available under the brand name ME Portable Meter and meets the requirements of IS 1248/83. It has an indication method via deflecting pointer only and can be any of following types:
  • Moving Coil
  • Moving Iron
  • Dynamo-meter type
  • Application area of ME Portable Meter The meter is used for the measurements of electrical quantities such as:
  • Current
  • Voltage
  • Power (Active, Reactive)
  • Power factor of the network
  • Salient Features:
  • Manufactured with best quality material
  • Fitted in sunmica wooden case
  • Rubber footing and rexine strap provided with antipara'Uax mirror and knife-edge pointer
  • Minimum friction
  • Sustains accuracy in vigorous field condition
  • Fine Performance over a long time span
  • Effective oil damping
  • Metal parts are adequately plated
  • Effectively shielded instruments, from external magnetic effects & electrostatic influences
  • Special Attachments available at EXTRA COST
  • Center Zero or shifted zero instrument are available in moving coil and dynamo type
  • Multi range voltmeters, ammeters and watt meters are available.
  • Precision grade instruments are available with accuracy 0.5%.
  • Magnetic shielding can be provided
  • Demonstration type meters are available

  • The world class D.C. Energy Meter, popular by the name ME Digital DC Energy meter, manufactured by us, is used to measure the DC energy consumed by a DC load (DC motors etc).
  • Energy Indication: Max. 09.99 Kwli. Resolution 0.1 Kwh
  • Current Ranges: 2.5 - 5 ADC and 5 - 10 ADC and 10 - 20 ADC (any one Range)
  • Accuracy Power: ± 2%, ± 1 Digit at load voltage. 230 VDC
  • Rechargeable Nickel / Cadmium Batteries (4x1.5 Volt) (Batteries charging mains: 230 VAC)
  • I.ED, 0.3 inch 4 digit numerals with low Battery; (1.OBATT1)
  • Energy consumption ('ENG CONS') indicators
  • Battery Charger

  • We manufacture and export the specially designed Ohms Meter. Few of the popular features of the electric instrument are as follows:
  • Portable
  • Sensitive
  • Self-contained
  • Battery operated
  • Moving coil type ohms meter
  • The instrument provides accurate readings, as a result of following:
  • Anti parallax mirror scale
  • Knife-edge pointer
  • Infinity Adjustment Potentiometer
  • Mechanical zero adjuster is provided to adjust zero
  • To avoid Battery Drain, the instrument is equipped with PRESS TO READ switch. Its specifications include:
  • Ranges: Choice of 25, 50, 100, 300, 500, 1000, 2000 and 5000 ohms
  • Accuracy: ± 5% of the indicated value at center scale
  • Dimensions: 160mm x 110 mm x 80 mm approx
  • Weight: 700 grams approx
  • Power Source: 1 number of pen cell of 1.5 volts, Eve ready type 1035 or equivalent
  • Accessories : Test Leads




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    Mahesh Electrical Instruments
    Vidhyadhar M. Bane  (Manager)
    No. 212- A, Bhagtani Enclave, Near Anandraj, Industrial Estate, Off. LBS Marg, Sonapur, Lane, Bhandup -West
    Mumbai - 400 078, Maharashtra, India