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  1. 1. SS Electromech Private Limited Jeedimetla Phase V 18th Dec 2013 1
  2. 2. Introduction S.S. Electromech Engineers Pvt. Ltd., (SSEEPL) is located in Hyderabad one of the fastest growing Metro Cities in South India in the State of Andhra Pradesh. SSEEPL is Promoted by Mr. R. SADASIVA REDDY a first generation entrepreneur, primarily to manufacture power equipment which caters to the requirements of Power Transmission and Distribution Industry. The company manufactures 18th Dec 2013 2
  3. 3. S.S. Electromech Engineers Pvt. Ltd., is a reliable partner for supply of Complete Motor Operating Mechanism / Manual Operating Mechanism as per the customer’s requirement. •Motor Operating Worm Reduction Gear Boxes with A.C/D.C Motor. •Manual Operating Worm Reduction Gear Boxes. • Motor Operated Mechanisms / Manual Operated Mechanisms to operate disconnections up to 800 KV. • The company products are sold to the O.E.M’s like Siemens Limited, Crompton Greaves Limited etc., and the end users include Power Grid Corporation of India Limited (PGCIL), National Thermal Power Corporation Limited (NTPCL) and all the power utility companies in India, besides its products are also exported to a variety of companies through these O.E.M’s. The company is the biggest supplier in India in this product category. 18th Dec 2013 3
  4. 4. Work Plan To conduct a process on MOM before dispatching to the customers Target Work for 10 days and finish the target by December 17th 18th Dec 2013 4
  5. 5. Motor Operated Mechanisms / Manual Operated Mechanisms •Introduction •Important parts •Working •Application 18th Dec 2013 5
  6. 6. Introduction The manual-operated mechanism type is designed for outdoor installations and used for the operation of high voltage disconnectors and earthing switches. It is normally mounted on the side of the transformer tank and by means of drive shafts and bevel gears connected to the Tap-Changer. 18th Dec 2013 6
  7. 7. Important parts • Anti-condensation heater • Cabinet light • Step-by-step relay • Contactor, Raise • Contactor, Lower • Motor • Door operated switch • Position transmitter, potentiometer • Continuation contact •Terminals • Measuring amplifier • Outgoing shaft • Hand crank • Crank shaft • Break pin • Break disc • Cam disc for maintaining contact • Operation counter • Multi position switches • Rating plate • Motor-drive mechanism cabinet door • Hand knob • Air vent • Intermediate shaft • Helical pinion • Position indicator shaft • Arm for end stop • Knob for mechanical end stop •Spring for brake •Printed circuit card 18th Dec 2013 7
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  9. 9. Working Raise-Operation with Local Control Lower-Operation with Local Control 18th Dec 2013 9
  10. 10. Raise-Operation with Local Control When switch S1 is set in position ”Local” the mechanism can be operated by control switch S2. For a raise operation the procedure is as follows: •Motor contactor K2 is energized, the contactor closes the motor phases, the motor starts and drives the mechanism in the raise-direction. After about 0.2 seconds the brake is released and after about 0.4 seconds the maintaining contact S3: 33-34 closes and take over the feeding of contactor K2 when control switch S2 is released. •The switching in the On-Load Tap-Changer takes place after about 3 seconds. •The driving mechanism keeps on rolling until the cycle is completed, which takes about 5 seconds. About 0.2 seconds before the cycle is completed, the maintaining contact S3 is released, contactor K2 falls and the feeding of the motor is interrupted. At the same time the brake is engaged and the mechanism will stop in the new position.18th Dec 2013 10
  11. 11. Lower-Operation with Local Control •A similar cycle is obtained, but in the lower direction, when the control switch S2 is switched to lower position and contactor K3 is engaged. 18th Dec 2013 11
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  13. 13. Thank You 18th Dec 2013 13