The difference between single-stage vacuum oil filter and double-stage vacuum oil filter

The main difference between a single-stage vacuum oil filter and a double-stage vacuum oil filter lies in the structure and performance of the vacuum system, as follows:

1. Vacuum system structure

- Single-stage vacuum oil filter: There is only one vacuum pump and one vacuum tank, and the structure is simple.

- Double-stage vacuum oil filter: Equipped with two vacuum pumps and two vacuum tanks, the structure is more complicated.

2. Vacuum degree

- Single-stage vacuum oil filter: The vacuum degree is lower, usually between -0.08MPa and -0.095MPa.

- Double-stage vacuum oil filter: The vacuum degree is higher, usually between -0.095MPa and -0.099MPa.

3. Dehydration and degassing effect

- Single-stage vacuum oil filter: Suitable for oils with low water and gas content, and the treatment effect is average.

- Double-stage vacuum oil filter: Suitable for oils with high water and gas content, and the treatment effect is better.

4. Processing speed

- Single-stage vacuum oil filter: slow processing speed.

- Two-stage vacuum oil filter: faster processing speed and higher efficiency.

5. Application scenarios

- Single-stage vacuum oil filter: suitable for occasions with low requirements, such as small transformers, switchgear, etc.

- Two-stage vacuum oil filter: suitable for occasions with high requirements, such as large transformers, high-voltage equipment, etc.

6. Cost

- Single-stage vacuum oil filter: low cost.

- Two-stage vacuum oil filter: high cost.

7. Maintenance

- Single-stage vacuum oil filter: simple maintenance.

- Two-stage vacuum oil filter: complex maintenance and higher technical requirements.

Single-stage vacuum oil filter is suitable for simple scenarios, low cost and easy maintenance; two-stage vacuum oil filter is suitable for high-demand scenarios, with good processing effect but high cost and complex maintenance.