Ms Mahesh Electrical Instruments

LBS Marg, Mumbai, Maharashtra

Quality is one aspect on which we can never compromise. And, for this, our personnel work hard and ensure that the entire lot complies with defined quality norms. Placed in Mumbai(India), we share space with the top-notch Suppliers, domestically and offer top-of the line array of in the market.

We are well reckoned as one of the supreme Electrical Load Banks Manufacturers and Exporters from India. ME Load Banks are single phase and three phase variable Lamp or resistor or capacitor or Induction load housed in metal case as shown in the diagram. Our Portable Load Banks are provided with castor wheels (except Induction Load) for easy handling. Ammeters and Voltmeters are provided on the front panel to indicate the current and voltage respectively. Also heavy-duty Porcelain switches with bakelite top and inner brass contact or Anchor Switches or MCBs (As per the load capacity) are provided for safety. For Mains ON, MCB is provided. The Load Banks are used to simulate load conditions to test Voltmeters, Ammeters and Wattmeters. Load can be simulated by using the load switches provided on the bench. Total load simulated is sum of the loads of all 'ON' switches. The pictures shown are a three in one unit comprises of Capacitor, Induction and Resistor loads (in order) in single Load Bank. Load Type:- In resistance Load Bank Resistor wire as per required capacity is wound on the porcelain tube; in the same manner Bulbs are provided for bulb load bank (LAMP Bank) and Capacitor are provided for Capacitance load bank. Induction Load Bank is smoothly variable, core balance type inductive load. In this type, the load is increased or decreased by increasing or decreasing the air gap between the coils. In this Rotating knob is provided on the top of the panel for operating the air gap. Operating:-Before switching on the load bank, put all load switches in 'OFF' position. In induction load bank, keep the Coils in closed position, Switch on the Load Bank. Switch on the load switches one by one till the required load is simulated. For Induction Load Bank rotate the knob to increase the air gap and current will start increasing smoothly. Load Voltage & Load Current will be indicated on the Voltmeter & Ammeter respectively on the panel.

We stand in the midst of ecstatic Phase Indicator Manufacturers and exporters, based in India. Our Phase Sequence Indicator is a portable and sturdy instrument having a rotating disc to indicate the sequence of the phases of 3 phase power supply. Clockwise rotation of the rotating disk of the PSI indicates proper sequence. Anti clock wise rotation indicates improper sequence. Electronic Phase Sequence Indicator provided by us is useful for checking the sequence of phases when the same are to be connected in proper sequence watt meters, power factor meters, motor and similar applications.

An ample assortment of high quality Dc Electric Motors is provided by us. We are well reckoned as one of the major Dc Motors Manufacturers and Exporters based in India. Our Dc Gear Motors are manufactured from the finest quality raw materials to add durability and efficiency. Some of the salient features of our Dc Electric Motors are listed below:

• Low noise operation
• Minimize EMI
• Maintenance free
• Compact size and rugged structure
• High power density
• Low consumption of electricity

We stand in the midst of leading Direct Current Shunts Manufacturers, based in India. ME Dc Shunts are available for current ratings from 5-10000 Amps and mill volt drops of 75 milli volts. (Other voltage drops can be provided at request) The Shunts confirms to IS Standards 1248 ME Dc Ammeter Shunts consist of Mangenin rods soldered or silver brazed to brass end blocks. The shunts are artificially aged after manufacture and then tested on full load. Shunts are supplied with leads of 0.025 ohms. The lead resistance is taken into account while calibrating the shunt. Overload: Shunts are capable of withstanding temperatures upto 120 C without any permanent alterations in physical or electrical properties. Overloads and faults which results in temperatures of this magnitude can be safely handled All 75 milli volts 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.

Temperature Co - Effecient : 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.

We stand in the midst of supreme cell tester manufacturers, based in India. Our high quality Cell Tester is highly useful for checking battery voltage in automobiles, laboratories and other applications. Center zero dial of 65mm diameter provide voltage reading with polarity indication. A terminal spike fitted on the top at the Solar Cell Tester, can be directly connected to one of the battery terminals. 150mm long insulated prod with flexible test lead, can be connected to the other battery terminal. 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 moulded cabinet.

The Black Panther Single Phase Induction Motor is a robust and energy-efficient electric motor designed for dependable performance in domestic, commercial, and light industrial applications. Operating on a single-phase power supply, it is engineered with a high-grade laminated core, dynamically balanced rotor, and copper windings to deliver smooth operation and low vibration. The motor features a capacitor start or capacitor start–capacitor run (CSCR) mechanism for high starting torque and consistent speed regulation. Its compact design, thermally protected enclosure, and corrosion-resistant housing ensure long service life even in demanding environments. Ideal for applications like water pumps, compressors, fans, and small machinery, the Black Panther motor offers silent operation, high power factor, and easy installation.

An Electric Battery Charger is an essential device designed to replenish the energy of rechargeable batteries by supplying a controlled electric current. It is compatible with a wide range of battery chemistries including lead-acid, lithium-ion, NiMH, and gel batteries. The charger features multiple charging modes such as trickle, fast, and float charging, with smart microcontroller-based systems for automatic voltage and current regulation. Built-in safety features include overcharge protection, short-circuit protection, reverse polarity safeguard, and thermal shutdown. Available in various power ratings and voltage configurations (12V, 24V, 48V, etc.), these chargers are suitable for automotive, industrial, solar, and inverter battery applications. The compact design, LED indicators, and intelligent charging cycles make them user-friendly and energy-efficient.

Core PorcelainTube, Non-Magnetic Non-Inductive Tubular Type.

2)Contact Block :Squire piece made of material is fitted with contact sliders in the guide squir rod. Bright chrome plated Phosphor bronze strip which makes immediate contact with the guide rod. A backlite knob is fitted with squire piece for sliding up and down.

3)Guide Rod :Solid draven brass rod bright chrome plated squire.

4)Contact Material :Multiple brushes of Phosphors bronze strip rolled strip give springy action to the contacts.

Winding Wires :Eureka wire for low value and nichrom wire 80/20 grade for higher values.

Temperature rise :200oC above ambient temperature High Voltage Test : 2 KV A.C. for 1 minute between end support and any one of 3 wires terminals of the wire.

End supports :Aluminium brackets painted.

Terminals :Bright Chrome plated brass nuts and screws one at each end of Leaneer Type Wire-Wound Resistor and the third one at both the side of guide rod.

All Electrical Connectors are made from chrome plated brass material.

Rotary Sliding Rheostate, Double tube and Multiple Tubes, Non-Standard values, wattage on specific request, Available from 100 Ma to 100 Amps 0.3 ohms to 25 Kohms.

The Portable Resistive Load Bank is designed for electrical load testing and verification, operating at a voltage rating of 230V, 400V, or 415V AC in single-phase or three-phase configurations. It supports power capacities typically ranging from 5 kW up to 500 kW, with adjustable load steps in defined increments such as 1 kW or 5 kW. The frequency of operation is 50 Hz or 60 Hz, depending on application requirements. The load applied is purely resistive (ohmic), converting electrical energy into heat using stainless steel or nichrome resistor elements. Cooling is achieved through high-performance axial fans to maintain safe operational temperatures, with resistor temperature rise reaching approximately 250°C to 400°C. The enclosure is made of powder-coated steel or aluminum and rated between IP21 and IP55 for protection against environmental exposure. It is designed for portability, often mounted on heavy-duty wheels or equipped with lifting handles for field use. Safety features include thermal protection, airflow loss sensors, overcurrent trip, circuit breakers, and emergency stop controls. The unit is operated via a manual or digital control panel with real-time voltage, current, and power metering. Suitable for generator, UPS, and electrical system testing, it is a compact and rugged solution for on-site commissioning, maintenance, and performance evaluation tasks.

A DC Shunt Motor is a type of direct current motor where the field windings are connected in parallel (shunt) with the armature. It typically operates on a rated voltage of 220V or 440V DC, depending on the model and application. Power ratings range from fractional horsepower to several hundred horsepower. These motors provide a nearly constant speed under varying load conditions, making them ideal for applications requiring precise speed control. The speed range is generally 500 to 3000 RPM with excellent speed regulation characteristics. The insulation class is usually B or F, and the duty cycle is continuous (S1). The motor has a laminated stator and rotor with high-grade copper windings for efficient performance. Efficiency can range from 75% to 90% depending on the load and size. Ambient operating temperatures range from -10°C to +45°C. Cooling is typically provided by self-ventilation (IC01) or forced cooling (IC06 or IC411) for higher power ratings. The enclosure may vary from open drip-proof (ODP) to totally enclosed fan cooled (TEFC), with an IP rating of IP21 to IP55. These motors are widely used in lathes, conveyors, textile machinery, and lifts where smooth and adjustable speed is essential.