gayatri engineers presentation

involved in Design, Manufacturing and repairs of following products.

1 - Industrial Rectifiers / Constant Current Sources – Engine Cranking, Electroplating

2 – Industrial Battery Chargers / S. M. P. S. for Electric Vehicles, general applications , etc.

3 – Servo Voltage Stabilizers for variety of industries & applications.

4 - Frequency Converters – for 60 Hz, 100 Hz 400 Hz or various power frequency generation for machines from USA ,Germany.

5 – Mag-Demag systems for Electro-Magnetic Lifters, and Electromagnetic & permanent magnetic Chucks.

6 – Industrial Inverters / Lift Inverters / On Line UPS.Gayatri Engineers,. Pune

Sudhanshu V. Shrikhande – at Gayatri Engineers, Pune

Sudhanshu V. Shrikhande. Educational qualificationB E Electronics, Pune. Diploma Electronics, V.J.T.I. Mumbai.

Design & Manufaturing Work Experience-

1. Astral Electronics, Pune- UPS, Inverters, Stabilizers.1991—1993

2. Electronica Machine tools Ltd. ,Pune- Design-Development and project manager.1993—1998

3. Nelco Ltd. Tata group co. – Application development with variety industrial processes of Variable Frequency Drives ( VFD )1998-2001

4. Gayatri Engineers- C. E. O.2001--2015

Gayatri Engineers,. Pune

Customers• Cummins India Ltd. Pune, Phaltan, Pirangut• Kirloskar Oil Engines Ltd. Pune, Kagal ( Kolhapur )• Philips India Ltd., Chakan , Pune.• Forbes Marshall, Chakan, Pune.• Rinder India Ltd., Chakan, Pune.• Autoline Industries, Chakan, Pune.• Dhoot Transmissions Ltd. , Chakan, Pune.• Bharat Forge Ltd., Pune & Baramati.• Sparkline Equip Pvt Ltd., Pimpri, Pune.• Eaton fluid, Pimpri, Pune.• Mahle Behr India Ltd., Chakan, Pune.• SAJ Test Plant Pvt. Ltd, Mundhwa , Pune.• Dynomerk Controls, Bhosari, Pune.• Dynalec Controls , Shivane, Pune. • AVL India, Gurgaon, • IASYS Tech , Shivane, Pune.• Consolidated Hoists, Pune. • Mala Fruit products, Panchgani , Wai.• Photonix India Ltd., Wai MIDC.• Denso , Haryana.• Swaraj Dairies, Phaltan, Satara.


Battery ChargerApplication – Batteries of UPS, Inverter, Gensets,

Electric Vehicles etc.

•Power range- 12V 24V 36V 48V at 5 Amp to 50 Amp. And many more

• Input – Single phase / 3 phase.

•Output – Different voltages to suit the battery bank.

•High Frequency or 50 Hz or 30 Hz

•Output at Terminal strip or Suitable Battery Connector.

•Analogue / Digital voltmeter, Ammeter for Battery.

• Input & output is protected by a fuse / MCB.

Battery IndicatorApplication – Battery operated trolleys, electric vehicles, etc.

•It helps to estimate a Charging percentage of a Battery .

•It informs a user how much charge is balance in a battery.

•It helps auser to take a decision of his battery vehicle.

•Battery operated system. Requires no separate electric supply.

•Small size panel mountable unit.

•100 mm x 100 mm x 120mm, Weight- 0.5 Kg.•LED display for user.


• Battery Tester• Application – To confirm a 12V Battery if it is

Discharged – Weak – Dead. It saves a lot of time on decision making of a battery, if it is weak or bad or discharged.

• Hand held unit, 3 Inch x 12 Inch x 3 Inch, Weight- 1 Kg.

• Voltage Digital display for user.


• Constant Current Sources.Application- Electroplating for Metals, PCBs, Jewellery.• Input– 1ph , 3 ph, 50 Hz,• Output – 10 Amp to…3000 Amps. At 6 VDC to

24 VDC• Mimimum ripple for better performance.• Controlled Rectifiers with suitable filters.• Variac based systems.• Transformer based 12 pulse rectifiers.• Input MCB / MCCB .• Output MCB , MCCB .• Terminations for input & output.• Digital voltmeter & Ammeter.• Indoor / Outdoor /Air cooled / Oil cooled.

100 amp current source

30 amp current source


Gayatri Engineers, Pune.

• Constant Voltage Sources.Application- Testing of compenents, panels, etc.• Input– 1ph , 3 ph, 50 Hz,• Output – 10 Amp to…3000 Amps. At 0 VDC to

600 VDC• Mimimum ripple for better performance.• Controlled Rectifiers with suitable filters.• Variac based systems.• Transformer based 12 pulse rectifiers.• Input MCB / MCCB .• Output MCB , MCCB .• Terminations for input & output.• Digital voltmeter & Ammeter.• Indoor / Outdoor /Air cooled / Oil cooled.

32 VDC AT 30 AMPS

14VDC 200AMP LAMP TESTING

•Engine Cranker Rectifier Application- Engine Testing / Starting.•Output Voltage rating- 12 V 24 V DC.

•Output Current rating -60 --3000 amp

•Input – 3 phase, 415Vac.

• Selectable outputs in single rectifier system as 12V and / or 24V.

• Output voltmeter & ammeter.

• Mains R-Y-B Indications.• Start-Stop push buttons.• 2 wire Start /Stop for distant operations.• Thermal protection at the input.• MCB at the input for ON-OFF and protection.• Indoor-Outdoor enclosures.• With wheels & lifting bolts


Frequency Converter.•It is a pure sine wave POWER SOURCE.

• application- conversion of power from any frequency to any fixed frequency or a variable frequency. 50, 60, 400 Hz, etc.

• Input – 1 ph, 3 ph Indian or Americal standard.

• Output – 1 ph, 3 ph Indian or Americal standard.

• Voltages- 100-110-120-230-300-380-415-440-480-560 any range.

• Indoor –Outdoor enclosures.


Mag-Demag system and

Capacitor Discharge systems.• Used to magnetize and demagnetize the Electromagnetic

• Chucka and Electro-permanet magnetic chucks.

• Mag Demag systems offer 110 / 220 VDC at currents from 2 amp to 40 amps.

• Capacitor Discharge systems offer heavy current pulse

• into the coil of magnet and put the magnet into deep saturation.

• Applications - Magnetic chucks for Grinding /Milling machines & Material Lifting.

• Wire remote are used to operate the above systems.

110V 30A110V 5A

Capacitor discharge systemGayatri Engineers,. Pune

Variac based D C Sources Testing applications.

• Power range- from 1 KW to 100 KW.• Input–3 ph, 50 Hz, Indian Standard.• Output – 12 V to 400 VDC.• Unbalanced Line and Load regulation.• Transformer base or Variac based system,• Input MCB / MCCB .• Output MCB , MCCB .• Terminations for input & output.• Digital voltmeter, Ammeter.• Indoor / Outdoor /Air cooled / Oil cooled.

200-400 Vdc at 25Amp

60 amp 3 ph variac


Servo stabilizer 1 ph to 1 ph.

• Power range- from 0.5 KVA to 15 KVA.

• Input – 180 to 270 vac, 1 ph, 50 Hz,.

• Output – 230 vac +/ - 1 %.

• Servo mechanism with ac synchronous motor,

• Input mains cord upto 3 kva ., Output socket upto 3 kva.

• Terminal strip for input & output > 3 kva.

• Analogue voltmeter, common for input & output., Input & output is protected by a fuse / MCB.

• ( Fuse upto 3 kva and MCB for others ).Protection at Output overvoltage & undervoltage .

• Output is automatically Cut-OFF at O/v and U/v and automatically re-starts when the voltage is in operating limits.


• Servo stabilizer 3 ph to 3 ph.

• Power range- from 1 KVA to 600 KVA.

• Input–250,300,340,360,380 to 460, 480, 500 vac,

• Output – 380 , 415, 440, 480 vac +/ - 1 %.

• Unbalanced Line and Load regulation.

• Servo mechanism with ac synchronous motor,

• Input MCB / MCCB , Output MCB , MCCB .

• Terminations for input & output.

• Analogue voltmeter, separate for input & output.

• Input & output is protected by an MCB / MCCB.

• Protection at Output overvoltage & undervoltage .

• Output is automatically Cut-OFF at O/v and U/v and

• automatically re-starts when the voltage is in operating limits.

• Indoor / Outdoor /Air cooled / Oil cooled.

Stabilizer 250 kva 3phase

Stabilizer 50 kva 3phaseGayatri Engineers, Pune.

ON LINE UPS & Lift Inverter & batteries.It is a pure sine wave POWER SOURCE.

Applications- Computers, Industrial CNC machines, Lift back up,

Home or Office back up.

Stable Voltage and Frequency .

Input – 1 ph 230vac or 3 ph 415vac.

Output – 1 ph 230vac or 3 ph 415vac.

Indoor –Outdoor enclosures.


Contact Us-

Gayatri Engineers.

Works—Gala no. 110-111, Yashada Ind Estate, Narhe, Pune-411041( general communication- 30-Electronic Estate, Pune-Satara Rd. Pune 411009 )

Web- www.gayatriengineers.com

Mail- [email protected] , [email protected]

Tel-020-24220454 , 9822479521

Products- servo stabilizer- 1 ph / 3 ph, UPS, Frequency Converters, Rectifiers, Mag Demag & Capacitor discharge units, Battery Chargers , Constant current sources . DC Sources.


http://www.gayatriengineers.com/

mailto:[email protected]

mailto:[email protected]

gayatri engineers presentation

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