• World leader in motor starting technology

    8500+ installations

  • motor soft starting solutions since 1978

    We mean energy and power efficiency

  • Clean and Harmonics free sinusoidal power quality

    We mean power, quality and efficiency

  • Motor soft starting solutions since 1978

    We mean energy and power efficiency

  • Pioneered the technology worldwide since 1978

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Late Mr. Ram Bapat (1936-2019) Chairman.
Jayashree Group

ABOUT US

It all started in 1977 when our chairman Late Mr. Ram Bapat understood the need for import substitute development in heavy industry large size motor starting challenges, the first medium voltage soft starter was designed, manufactured and put in service in 1978 by Jayashree and the 1st of its kind solution in India, today we are the leading soft starter manufacturer in India with 6000 + installation around globe and design, manufacturing capacity of 4000 soft starters per year for up to 35 MW 13.8 KV Electrical motors of all types.

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About the product HFSR

Dynamic LC impedance type motor soft starter technology

The concept of a pure Electrical solution for motor soft starter was pioneered by Jayashree which opened the door to new possibilities in system optimisation and energy saving.This is an indigenous solution by one of the most trusted brand in India for control and automation product.

Installations Worldwide – 8873
Oldest Soft Starter running – 40 years

Harmonics free Series Reactor  (HFSR), the name derived from the electrical Standards and technology, The customised solutions offered by Jayashree brought a revolution in the motor starting concept, till date the concept stands as unmatched technology for its performance and reliability, Continuous up-gradation has improved the product with all modern requirements of system integration, data logging, control, automation, remote operation, the product is now branded and promoted with trade mark of HFSR™/FCMA™/SMSC/Rotastat/Rotacon by Jayashree.

Technology

Dynamic Series Impedance based on IS/IEC standards & auto LC circuits based upon:

  • System PF and motor current feedback
  • Motor thermal characteristics
  • Torque and current dynamics

Advance Electronic Close Loop Control with Built-in Sensors

Pure sine wave based LC switching elements and motor starting current monitoring controlled by PLC to offer smooth , linear , step-less motor acceleration . Dynamic LC compensation is engineered for the series impedance matched for the motor delivering as low as 1.2 X FLC system starting current. time tested and bug free algorithm for the PLC operation is developed in-house for most reliable control and switching of power elements during starting which ensures isolation and elimination of harmonics, resonance and PF over compensation during motor starting , an unique and engineered approach towards stable system and improved power quality parameters.

Example :

The HFSR™ system will improve the energy consumption during starting as well as during running of fixed speed motor,
the ‘maximum demand’ can be reduced by 68 % and running energy saving can be achieved up to 22 %.
Download the example to learn more.


Download example slides

HFSR™ Reactor

Jayashree introduced the air core technology for soft starters in 1980’s , the first of its kind solution and invention offered for the commercial use, Air core superseded the dated magnetic core technology by its superior characteristics and performance

HFSR™ ( air core and advanced magnetic core ) / FCMA™ ( auto-transformer based ) technologies are introduced and pioneered by Jayashree and promoted since 1987 , both trade mark registered by JEPL, offered solutions are as per customer requirements and suitable for the application.


Download JEPL HFSR™/FCMA™ comparison table

Product Features

1. Pure sinusoidal function for voltage control, unlike digital control with chopped wave-forms. Chopped wave forms generate eddy currents and heating in motor winding, where as attenuated sinusoidal waveform to motor reduces stator magnetic field resulting in stress free rotor and elimination of unwanted starting torque, the idea is not just to reduce the voltage , it is about how you reduce the voltage and ramp up.

2. Jayashree soft starters with its matured PLC logic; controls the reactive and active component switching & currents and delivers a harmonics free, non resonating system performance effective up to 1.2 X motor full load current. It balances the power quality and KVA consumption by monitoring system parameters and also help maintaining the PF during starting and running of the motor.

3. Superior air core technology , customised shape and size to suit the mutual inductance and field compensation effect.
Engineered PLC/ smart electronic control for fault free performance and AI features for predictions and resolution of errors, pure PID like close loop monitoring and control of motor starting

4. Specialised in outdoor IP 67 soft starter panels with in-house facility to test the panels for rain, water ingress test, dust.

5. Safety Features :

  • Door switch
  • PLC monitoring for external interlocks
  • Continues temperature and current sensing
  • Anti resonance logic for system integration of LC circuits
  • Warnings and service reminders on HMI
  • Fault and resolution training screens on HMI

Motor PF improvement to up to 0.99
Motor protection and metering
Elaborated HMI screens for interface and status
Realtime Motor starting graphs and mathematical analysis on HMI
Complete customised solutions:Line / Neutral connection solutions
HM,PC, compensation, PF, system current, motor current, info along with status displays


Download HFSR™ Operation & Safety Manual

Solutions

We provide engineering services and customized solutions to match your requirement.

Line side , Neutral side soft starters for synchronous and squirrel cage motors

rotor side soft starters for slipring motors

solutions offered from 18 KW 380 V to 35 MW 13.8 KV

Motor station : start/ stop/ soft start/ PF correction / protection / metering / isolation / ALL IN ONE PANEL


Product Catalog

Manufacturing Facility

Located in Pune(India), 60000 Sq.ft fully automated pollution free facility of capacity 300 units per month and upto 4000 units per year.

 

Applications

SCIM/SYNC Motors are work horses of every industry and major consumer of energy. HFSR system is the most desired solution for reliability and long life of motors.

Soft starter function is to limit the motor starting nonlinear torque, reduce the system energy consumption during starting, reduce the mechanical vibrations and noise, reduce electrical burden on the system, Soft starter works to DE STRESS the supply system and the mechanical pressures on the rotating machine

Soft starter performance is measured by the electrical parameters controlled/delivered. and design of the soft starter is primarily based upon the motor, load characteristics and data is required to see the impact of the load on the motor

Compressor/Chiller :

Process industry (Steel/Cement/Textile etc.), centralized commercial or industrial cooling systems, Oil and Gas Industry, indoor/outdoor installations.

Compressor is an application sensitive to vibration, which usually gets developed due to high starting torque and impact, a smooth stress free acceleration and optimal starting time delivered by HFSR™ soft starter protects the compressor bearings and coupling for its long life and avoids the development of vibrations,

Lowest starting current achieved for a Compressor application is 1.25 X FLC

Performance certificate

Pump :

Lift irrigation projects, Jackwell/Distribution/Drinking Water projects, Industrial Cooling Towers, De-watering processes, Oil and Gas Industry, etc.

Pump application is sensitive to slurry, mud, moisture, HFSR™ soft starter reduces the pump fins impact with slurry, let the pump rotate slowly to full speed and helps maintain the pump its efficiency and geometry

Lowest starting current achieved for a pump application is 1.2 X FLC

Performance certificate

Fan :

Power/Chemical/Steel/Process Industry etc., Blower/ID/FD/Fan applications.

ID/FD fans are high inertia applications, due to inertia the motor experiences heavy resistance during initial acceleration, due to high starting torque and non linearity of torque the rotor tries to reach to full speed quicker than and load does not allow the same, load being connected to one end of the rotor , rotor experiences ‘twisting’ effect resulting in hairline cracks and insulation damage, HFSR™ soft starter delivers desired minimal torque for acceleration and de-stress the rotor. soft starter is a mandatory control for Fan application

Performance certificate

Crusher :

Sugar/Stone/CHP/Food.

Crusher is High starting Torque application, HFSR™ comes with kick start feature and energy saving feature when run idle,

Performance certificate

Actual site photos

 

Some of our Clients

It is almost impossible to mention every client all the time. Please contact us for our complete customer list.

Crompton GreavesCrompton GreavesCrompton GreavesJSWExideHoneywellJindal SteelTata MotorsTata MotorsTata MotorsTata MotorsTata MotorsTata MotorsTata MotorsTata MotorsTata MotorsTata Motors

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                                              It all started in 1977 when our chairman Mr. Ram Bapat understood the need for import substitute development in heavy industry large size motor starting challenges, the first medium voltage soft starter was designed, manufactured and put in service in 1978 by Jayashree and the 1st of its kind solution in India, today we are the leading soft starter manufacturer in India with 6000 + installation around globe and design, manufacturing capacity of 1200 soft starters per year for up to 35 MW 13.8 KV Electrical motors of all types.
                                              A complete automated and engineered process plant with in-house HT motor test bench and state of the art manufacturing facilities. our solutions are suitable for all types of :
                                              Pumps

                                              • -compressors
                                              • -fans
                                              • -crushers
                                              • -conveyors 

                                              Key advantage of Jayashree Pioneered solutions:

                                              • -Efficient motor starting by reducing the starting current up to 1.2 X full load current
                                              • -PF maintenance to unity
                                              • -harmonics free solutions and filters to improve the power quality and reliability
                                              • -Optimisation of capital investment
                                              • -DE-stressing the electrical and mechanical parameters of motor and connected load
                                              • -Improvement in reliability and life of the motor and connected system

                                              Jayashree has a excellent track record for its product quality, customer support, service, trust and innovation. Jayashree is a group of company having 4 major verticals in automation and control products ranging from non contact sensors, conveyor safety switches, optical encoders and soft starters, the products cater to over 80 % of domestic market share in their respective fields of application.

                                              Jayashree is a family owned business built on trust, ethics and values, present in India since 1972 , today it is the 3rd generation serving the organisation and working on innovation and improvement of products 24X7.