ZJ Series Vacuum Pump Unit
- Vacuum pump units are widely used for efficient vacuum drying and vacuuming in the installation and maintenance of large transformers.
- Suitable for vacuuming in substations, transformer manufacturing plants, and power plants.
- YUNENG can provide 1000m³/h, 2000m³/h, 500m³/h, 150m³/h, and other models, you can choose according to your specific needs.
Share to
What is ZJ Series Transformer Vacuum Pump Unit? & What is the Working of a Vacuum Pump Unit?
- Used widely for efficient vacuum drying and pumping in large transformer installation and maintenance.
- The unit has a leakage rate of less than 1%, equipped with anti-oil-back and automatic phase sequence systems to prevent pump reversal.
- Especially suitable for vacuuming in substations, power plants, transformer manufacturing, and various other industries like vacuum smelting, welding, chemical, pharmaceutical, vacuum coating, and electronics.
Features of Vacuum Pump Unit
- ZJ Series uses an air-cooled rotary vane and roots pump for efficient operation.
- Achieves a working vacuum of 50Pa, with a maximum of 10Pa during operation, and an ultimate vacuum of 1-3Pa.
- Quick start, high pumping speed, stability, and easy operation.
- Equipped with LCD displays, mobile features, and a user-friendly design for low noise, energy efficiency, and low operating costs.
- Fully automatic with an indicator light for unattended operation and easy monitoring of the running status.


Vacuum Pump Unit Specification
Parameter | Unit | ZJ-70 | ZJ-150 | ZJ-300 | ZJ-600 | ZJ-1200 | |
Power Supply | 50Hz 380V 3-Phase 4-Wire (or as requested) | ||||||
Power | KW | 4 | 6.5 | 7 | 11 | 18.5 | |
Limit Vacuity | Pa | ≤3 | |||||
Pumping Speed | L/S | 70 | 150 | 300 | 600 | 1200 | |
Pumping Level | 2 | ||||||
Connection Diameter | mm | 50 | 80 | ||||
Size | Length | mm | 1200 | 1300 | 1400 | 1600 | 1750 |
Width | mm | 950 | 100 | 1100 | 1200 | 1300 | |
Height | mm | 1500 | 1600 | 1700 | 1900 | 2100 | |
Weight | Kg | 300 | 400 | 500 | 1250 | 1560 |
The machine size, and weight will change slightly due to different configurations.
Flow Chart of ZJ Series Vacuum Pump Unit

After-Sales Service

- 1-year guarantee for producing high quality(People-damaged components are charged).

- Lifelong upkeep and spare parts supply.

- Freely design customized products according to customer requirements.

- Free training on equipment installation and operating procedures for your employees in need.