Motor Drive Unit Type Cma9 of on-Load Tap Changer Transformer on Load Switch

General

The motor drive CMA9 (fig.1, 2) serves for driving the tap changer type CV to selected operating position.
It also can be used for some off-load tap changers. The motor drive housing contains all mechanical and 
electrical parts necessary for operating the tap changer from one operating position to an adjacent one,the
motor drive action is initiated by a single control signal and completed without any possible interruption.
Overrunning the end positions is prevented by double limits devices. Safety and monitoring devices are availble
 with easy operation. Auxiliary devices can be provided for various application requirement and retrofit project.

Note: The installation of motor drive, electrical connection and operation must be carried out by the trained 
personnel according to the operating instructions. To replace or change the motor drive without permission of
our company is not recommended. Failing to do so may cause severe damage to tap changer and transformer.
During the period of installation of motor drive, electrical connection and operation, improper operation may
have influence on the operation of motor drive, on-load tap changer and transformer.
 

Main technical data

Note: The listed technical data only applies to standard design, there might be some differences with actual
device, we reserve the right to make modification.

Working condition of motor drive unit:
1) Applied altitude shall not exceed 2000 meters.
2) The ambient temperature shall be 25~ 40 .
3) Vertical inclination of installation shall not exceed 2%.
4) Operation site should be free of dust,explosive or corrosive gases.

NOTICE TO USE AND ORDER
Customer and end-user should record the operation and inspection of the tap changer. In case of special 
condition, please contact with us and give us your report for data collecting purposes that we can give you
possibly further recommendations for your next inspection.
After the OLTC sold out from the factory within 18 months, in case of any damage or malfunction of the OLTC
due to the manufacturing quality encountered by the customer or end-user under the regulations of storage
and application, we can give you inspection and repair work without charges.
Generally the provided cable lead for the indicator is 30M. Please specify your special requirement when you
give your order.

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PRODUCTS. THANK YOU FOR YOUR SUPPORT AND COORDINATION.
WE WOULD LIKE TO PROVIDE OUR CUSTOMER WITH HIGH QUALITY PRODUCT,
EXCELLENT SERVICE AND PREFERENTIAL PRICE.

 

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