| Customization: | Available |
|---|---|
| Application: | Transformer |
| Color: | Dark Green |
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The Function of the Tap-changer
The function of the transformer tap-changer is to change the output voltage or current of the transformer. By adjusting the contact position, it is possible to change the point of connection of the secondary windings, thus adjusting the voltage ratio of the transformer to suit different loads.
WDT, WST Series De-energized Tap Changer (Bar Form)
This type of tap-changer is comprised by tap-changer body and operating mechanism, it is suitable for oil-immersed powertransformer with frequency of 50, 60Hz, highest voltage for equipment 40.5kV and 1 26kv, rated current from 200 to1500A. The tap-changer is installed on tanking body and operating on tank cover, they must be working under non-energizedcondition.
| Type of Tap Changer | Rated Current (A) | Highest Voltage for Equipment (kV) | Range of Voltage Regulation | No. of Phases | Regulation Position | Install Dimension (mm)
|
Holes on Tank Cover φD (MM) | |||||||||
| WDT I 200-800/40.5 - 3 X 3 | 200 400 500 630 800 |
40.5 | ±5% | 1 | Liear Voltage Regulation | 744 | 144 | 80 | 170 | 2 | φ80 | |||||
| WDT I 200-800/40.5 - 5 X 5 | ±2 x 2.5% | 888 | 288 | 80 | 170 | 4 | ||||||||||
| WDT I 200-800/40.5 - 7 X 7 | ±3 x 2% | 1032 | 432 | 80 | 170 | 6 | ||||||||||
| WDT I 200-800/40.5 - 9 X 9 | ±4 x 1.25% | 1196 | 576 | 100 | 170 | 8 | ||||||||||
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