Ms Mahesh Electrical Instruments

LBS Marg, Mumbai, Maharashtra

ME manufacture L.T Transformers in different types and capabilities to suit individual requirements.

These are manufactured both in natural air cooled construction and natural oil cooled construction. In addition to the above other types of transformers are i) Voltage Auto Transformers ii) Current Transformers.
These are described in our various leaflets. Special Enquiries will always be entertained with promptness, by our Engineering and sales staff.
The transformers described in this catalogue are made in natural air cooled and oil cooled construction, suitable for indoor use in a maximum ambient temperature of 45oC. The electrical performance of these transformers generally confirms to the requirements of I.S. specification No. I.S. 2026 for power Transformers.
Natural Air Transformers are supplied in sheet steel ventilated case with screwed top cover. Input and output terminals are provided on the top of the transformer, inside the casing. The transformers are suitable for floor mounting and are also supplied with M.S. rollers for easy portability.
Natural oil cooled transformers are supplied in M.S. Tanks. As a standard practice the tank is provided with oil filling hole with cap, oil level indicator drain plug and earthing terminal. Input and Output terminals are brought out generally on the top side of the tank.
Extra off-load taps can be provided on request. The capacity of the transformer at the tap will be proportionately low corresponding to the tap voltage. The declared capacity will hold good only for the highest voltages on both input and output, unless the taps are specified as full capacity taps.

Three Phase Double Wound Transformers.These generally are manufactured in Delta/Star or Star/Delta connections. Extra off-loads can be provided on request. A typical vector with winding connections is as shown below.

RLC LOAD BANK

Specifications for RLC Load (Resistive, Inductive and Capacitive Load (Three load bank in Single Unit))

RESISTIVE LOAD BANK

Single Phase & Three Phase,

240 Volts Single Phase & for 415 Volts For three Phase, AC, 50Hz

Capacity :- From 1 KW/4Amps upto 10KW/40 Amps Per Phase

Switches :- Heavy duty Rotary type Switches are used for steps (varying Load)

INDUCTIVE LOAD BANK, 3 Phase

Single Phase & Three Phase,

240 Volts Single Phase & for 415 Volts For three Phase, AC, 50Hz

Capacity :- From 1 KW/4Amps upto 10KW/40 Amps Per Phase

Switches :- Aluminum Handle/Knob is provided for varying Load.

CAPACITIVE LOAD BANK

Single Phase & Three Phase,

240 Volts Single Phase & for 415 Volts For three Phase, AC, 50Hz

Capacity :- 1 KW/4Amps upto 10KW/40 Amps Per Phase

Switches :- Heavy duty Rotary type Switches are used for steps (varying Load)

The RLC Load Bank is provided with UNI-DIRECTIONAL Castor wheels for easy handling.

Approx. Dimensions (Length X Width X Height) :- 70" X 20" X 35"

Approx. Weight :- 130-150 Kg

We are well reckoned as one of the overriding Current Transformer Manufacturers In India. Bar Primary ring type Current Sense Transformer is secondary coil wounded on a torroidal core if high permeability silicon steel. The conductor through which the current is to be measured is passed through the hole of the current transformer. Ac Current Transformer acts as primary winding and generates proportionate low current in the winding wound on the ring of the current transformer. The windings of the current transformer provide lower proportional current which can be easily measured by the measuring instruments. Current Transformers also isolate measuring instruments and protective devices from mains and higher voltages. It is easier to measure high current without breaking the bus bars or cables by means of bar primary current transformer, which can be supplied over the bus bar, or cable. These CT are sturdy, compact and economical. The secondary of CTs should not be open circuited when primary is energized as it may harm the operator to high voltage.

We provide a huge array of superior quality Potential Transformer that is manufactured from the finest quality raw materials. Our Power Potential Transformer is highly acclaimed in the national and international market for performance and durability. We are well renowned as one of the overriding Ac Potential Transformer Exporters from India.

We present a wide array of dimensionally accurate Constant Voltage Transformers that is highly applauded in the national and international market. Constant Current Transformers provided by us can be customized as per the demand of the client. Strong structure, high performance and easy installation are some of the salient feasters of our Constant Voltage Transformers. We have carved a niche as one of the leading Constant Power Transformers Exporters from India.

The Three Phase Auto Transformer operates typically at an input voltage of 415V AC and can be configured to step up or step down to various standard voltages such as 380V, 240V, or 480V, depending on the application. It functions on a frequency of 50 Hz or 60 Hz and is available in power ratings ranging from 3 kVA to 1000 kVA or higher. The transformer uses copper or aluminum windings with insulation class B or F and offers an efficiency of up to 98%. Cooling is achieved either through natural air cooling (AN) or oil immersion (ONAN) depending on capacity. The core is made from cold rolled grain oriented (CRGO) steel laminations, which help in reducing core losses and noise. The enclosure is typically IP23 or IP54 rated for indoor or semi-outdoor use, and thermal protection through temperature sensors or overload relays may be included. The transformer supports both delta and star connections and is suitable for continuous duty (S1). It is designed and manufactured in compliance with IS 2026, IEC 60076, or customer-specific standards for safe and reliable industrial performance.

ME manufacture L.T Transformers in different types and capabilities to suit individual requirements. 

These are manufactured both in natural air cooled construction and natural oil cooled construction. In addition to the above other types of transformers are i) Voltage Auto Transformers ii) Current Transformers.

These are described in our various leaflets. Special Enquiries will always be entertained with promptness, by our Engineering and sales staff. 

The transformers described in this catalogue are made in natural air cooled and oil cooled construction, suitable for indoor use in a maximum ambient temperature of 45oC. The electrical performance of these transformers generally confirms to the requirements of I.S. specification No. I.S. 2026 for power Transformers. 

Natural Air Transformers are supplied in sheet steel ventilated case with screwed top cover. Input and output terminals are provided on the top of the transformer, inside the casing. The transformers are suitable for floor mounting and are also supplied with M.S. rollers for easy portability. 

Natural oil cooled transformers are supplied in M.S. Tanks. As a standard practice the tank is provided with oil filling hole with cap, oil level indicator drain plug and earthing terminal. Input and Output terminals are brought out generally on the top side of the tank. 

Extra off-load taps can be provided on request. The capacity of the transformer at the tap will be proportionately low corresponding to the tap voltage. The declared capacity will hold good only for the highest voltages on both input and output, unless the taps are specified as full capacity taps.

We are counted among the distinguished L.T. Power Transformers Manufacturers In India. ME manufacture L.T Transformers in different types and capabilities to suit individual requirements. The leaflet describes following types

• Single Phase Double Wound Transformers

• Three Phase Double Wound Transformers.

L.T. Current Transformers are manufactured both in natural air cooled construction and natural oil cooled construction. In addition to the above other types of transformers are i) Voltage Auto Transformers ii) Current Transformers. These are described in our various leaflets. Special Enquiries will always be entertained with promptness, by our Engineering and sales staff. The transformers described in this catalogue are made in natural air cooled and oil cooled construction, suitable for indoor use in a maximum ambient temperature of 45oC. The electrical performance of these transformers generally confirms to the requirements of I.S. specification No. I.S. 2026 for power Transformers. Natural Air Transformers are supplied in sheet steel ventilated case with screwed top cover. Input and output terminals are provided on the top of the transformer, inside the casing. The transformers are suitable for floor mounting and are also supplied with M.S. rollers for easy portability. Natural oil cooled transformers are supplied in M.S. Tanks. As a standard practice the tank is provided with oil filling hole with cap, oil level indicator drain plug and earthing terminal. Input and Output terminals are brought out generally on the top side of the tank. Extra off-load taps can be provided on request. The capacity of the transformer at the tap will be proportionately low corresponding to the tap voltage. The declared capacity will hold good only for the highest voltages on both input and output, unless the taps are specified as full capacity taps. Three Phase Double Wound Transformers. These generally are manufactured in Delta/Star or Star/Delta connections. Extra off-loads can be provided on request. A typical vector with winding connections is as shown below.

We have carved a niche as one of the dominant Variac Variable Transformers Exporters from India. VARIAC Auto Transformers 1 Ph. (Closed / Open type) are designed to give output voltage of 260-270 Volts for the input voltage of 240 Volts. 3 Phase VARIAC Auto Transformers are designed to give output voltage of 470 Volts for input 415 Volts. These are available in manual and motorized operating type. Variac Auto Transformers are continuously variable voltage auto transformer, having a movable carbon tip, fixed to a brush-arm sliding on a silver plated commutator. Rotation of the brush-arm by either manual or motor drive, delivers-an output voltage from zero to or above line voltage. Variac conforms to I. S. 5142 of 1969. SALIENT FEATURES:

• RUGGED CONSTRUCTION: Variac transformer is designed for heavy duty trouble-free operation. All components are designed to give maximum life to the unit under extreme operating conditions. Except, for carbon tips, no other part needs any specific maintenance. Even carbon tips do not require to be changed frequently. This practically makes the VARIAC maintenance free electrical equipment.

• EXCELLENT REGULATION: The drop in voltage from "no load to full load" is minimal in Variac Auto-transformers.

• HIGH EFFICIENCY: Careful copper, core selection and design assure the user of low watt loss, as compared to other types of controllers.

• NO WAVE FORM DISTORTION: VARIAC provides an output voltage wave-form, which is a faithful and distortion less replica of the input voltage wave-form.

• SILVER PLATED COMMUTATOR: A special silver plating technique is used on the commutator enabling it to withstand high overloads and maintain constant contact drop. It also ensures smooth operation, long life and increased resistance to corrosion.

• LOW OPERATING TORQUE: A glass smooth commutator, special sintered bushings for the shaft and perfect assembling of the coils, results in low operating torque for all Variac Auto-transformers.

• SMOOTH AND LINEAR OUTPUT: As voltage between turns is small and as the brush-arm is in constant contact with more than one turn, harmful sparking is avoided and output voltage can be set very easily to a fraction of a volt from zero onwards by rotation of the knob.

• LOW MAGNETIZING CURRENT: By using an adequate section of high quality grain oriented silicon steel, the iron losses in Variac, are controlled to the minimum, The no-load current in all Variac transformers, is invariably less than 5% of the rated current.

• NEGLIGIBLE MAINTENANCE AND TROUBLE-FREE LONG LIFE: Variac has been carefully designed. No special care has to be taken to maintain Variac Auto-transformers in-normal- working environments. The only components needing inspection and maintenance are the carbon tips and the commutator. Timely replacement of carbon tips and cleaning of the commutator surface of foreign particles and accumulated dust, will ensure a considerably long, maintenance-free, and uninterrupted life to the unit. Normally Variac Auto-transformers upto 28 Amps. are offered in air-cooled or oil cooled construction and models of 40 Amps. and above, are offered in oil-cooled construction in very special cases, Variacs of 40 Amps. & above can be offered in air-cooled construction. This is possible due to the new paralleling techniques adopted by us.