- Rated Power: 25
- Rated Voltage: 33
- Number of Phase: 3
- Frequency: 50
- Cooling: ONAN
- Type: Outdoor or Indoor
- Cable Box: Standard
- Cooling Surface: Radiator
- Winding Material: Copper and/or Aluminum
- Tap Changer: Off load tap changer
- High Voltage Bushings: Porcelain
- Conservator Tank: Hermatically Sealed
- Air Breather: Standard
- Pressure Relief Device: Standard for hermetically sealed type
We generally manufacture distribution transformers in this power range, mainly in two different types:
- Transformer with conservator tank (WCT),
- Hermetically sealed type (HST),
Below table will help to engineers to select the best option according to environmental conditions which transformer works in:
| High Environmental Temperature | High Altitude | Rural Network | High Humidity | Over Load Conditions | Unstable Loading | |
|---|---|---|---|---|---|---|
| WCT | ⇑ | ⇑ | ⇓ | ⇓ | ⇑ | ⇑ |
| HST | ⇓ | ⇓ | ⇑ | ⇑ | ⇓ | ⇓ |
Meanwhile here is the advantage-disadvantage of the WCT-HST types:
- In HST type, tank pressure is more than WCT type. WCT type generally works under low pressure due to its open to atmosphere,
- In HST type, cooling/insulation oil does not contact to the air (theoretically). Therefore oil maintenance period is longer than WCT type,
- HST type transformers and their related parts generally work under higher temperature (If we evaluate WCT-HST work under same conditions).
SKU
25P33000S400-22
Brand
Datsan
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