1. SS Electromech Private Limited
Jeedimetla Phase V
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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
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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.
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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
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5. Motor Operated Mechanisms / Manual Operated
Mechanisms
•Introduction
•Important parts
•Working
•Application
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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.
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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
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9. Working
Raise-Operation with Local Control
Lower-Operation with Local Control
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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. 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.
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13. Thank You
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