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Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Central Round Tap Changer

Central Round Tap Changer Central point customized round off load tap changers are used to change the transmission ratio in order to adjust the transformer to grid conditions. Therefore the tap changers have several pins to connect with the coil windings. We produce a large variety of tap...

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Product Details

Central Round Tap Changer
Central point customized round off load tap changers are used to change the transmission ratio in order to adjust the transformer to grid conditions. Therefore the tap changers have several pins to connect with the coil windings. We produce a large variety of tap changers for distribution transformers in several sizes for current up to 1250 A. The diagram can be produced as delta, star, etc. Tap changers can be made as customers’ requirement.

Some setting device types can be protected with a protection cover. Changing direction is either designed clockwise or counterclockwise. A DC winding resistance test is used to detect any problem which impacts the integrity of the current carrying path between terminals of a winding, including the tap changer. It is particularly adept in identifying partial open-circuited conditions. The mechanical integrity of the tap windings and their leads are assessed in the mid- to upper-frequency ranges of an FRA test on a transformer. A test for excessive water in the tap changer reduces the dielectric breakdown strength of the oil and can accelerate aging of the contacts.

Model Explanation
 WDP □ - □/□-□╳□
    W:  off-circuit
    D :  single phase
    P :  round type tap chager
    □:  voltage regulation model
    □:  rated current
    □:  rated voltage
    □:  number of tapping heads
    □:  number of tapping position
Voltage Regulation Model
    I  :  terminal point
    II :   central point
    III :  neutral point
   IV :  Y-△ conversion           

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