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Transformer Test Equipment
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Huazheng HZLY-50A Double Stage High Vacuum Transformer Oil Filter
The transformer oil filter is widely used in power systems, petrochemicals, metallurgy, railways, and other industrial and mining enterprises. It is used for purifying substandard electrical insulating oil and can also be used for vacuum oil filling and drying of insulating electrical equipment.
Ⅰ、Product Specifications
| Model | HZLY-50A |
| Nominal Flow | 3000 L/h |
| Oil Purification Capacity | 50 L/min |
| Ultimate Vacuum Degree | ≤5 Pa |
| Pumping Rate | 250 m³/h |
| Working Pressure | ≤0.4 Mpa |
| Filtration Accuracy | 1 μm |
| Working Oil Temperature | 20～80 ℃ |
| Power Supply | 50Hz 380V Three-phase Three-wire |
| Heating Power | 30 KW |
| Total Power | 36 KW |
| Operating Noise | ≤75 dB(A) |
| Oil Inlet and Outlet Port | DN25 |
| Vacuum Interface Flange | DN25 |
| Dimensions | 145×140×165 cm |
| Equipment Weight | 760 Kg |
| Continuous Working Time | ≥200 h |
| Average Working Hours Without Failure | ≥5000 h |
Ⅱ、Product Net Oil Index
Oil to be treated (new oil)
Breakdown Voltage: >30kV (ball electrode)；
Moisture Content: ≤50ppm；
Gas Content: ≤10% (Volume ratio)；
After multiple processes
Breakdown Voltage: >80kV (ball electrode)；
Moisture Content: ≤2ppm；
Gas Content: ≤0.1% (Volume ratio)；
Ⅲ、Product Function Introdution
◇Remove moisture from oil.
◇Remove gases dissolved in oil.
◇Remove solid particles from oil.
◇On-site oil treatment of transformers and vacuum drying of electrical equipment.
◇On-site hot oil circulation drying of transformers.
◇Drain the transformer or vacuum-fill the transformer.
Ⅳ、Product Working Principle
4.1 Vacuum Dehydration Degassing Principle
Vacuum oil filter is designed according to the saturated steam pressure of water and oil, which is composed of coarse filter, oil supply pump, heater, vacuum separation tank, vacuum pump, condenser, fine filter, oil pump and so on.The vacuum pump will exhaust the air in the vacuum tank to form a vacuum, under the working of the oil supply pump (or negative pressure), and after the coarse filter is heated to 40-70℃ into the vacuum tank, the oil in the vacuum tank is atomized into a spray, the dissolved water and gas in the oil quickly evaporated into a gas and was continuously discharged by the vacuum pump. The dehydrated and degassed oil is discharged into the fine filter by the discharge pump, and the fine particles of impurities are filtered out through the filter element.
For old transformer oil with excessive dielectric loss, a regenerative device can be selected.
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