Application:
HOPU VPS Series Transformer Vacuum Evacuating System is widely used for vacuum pumping of power transformer and other electrical vacuum equipment in transformer substation, administration of power supply, power generation plant, and transformer manufactory, etc. VPS Series vacuum pumps unit consist of roots pump as booster and rotary vane pump as backing pump, the exhaust from the roots pump is connected to the suction side of the backing pump thereby giving advantage of high pumping speed at higher vacuum. It can achieve 10 pa working vacuum and 1 pa limited vacuum degree. But it is unsuitable for pumping toxic gas, explosive gas, high-oxygen content gas, high-moisture content gas, and the gas which will be reaction to pump oil or cause erosive effect on ferrous metal.
Features:
1. The vacuum pump set adopts special Roots pump and vacuum pump, so the vacuum pumping
speed and pressure, are obviously better than any other devices.
2. Working vacuum range and maximum vacuum degree are superior to other products.
3. It’s equipped with a control panel for controlling the operation of pumps.
4. Consist of necessary high quality pipelines and valves to operate the system.
5. It is installed with special vacuum gauge for accurate indication.
6. It adopts automatic vacuum relay for automatic control.
7. Stable and reliable operation, low noise, and easy to move.
8. Roots pump automatically runs by the start of backing pump with electrical-contact vacuum meter.
9. The powerful rotary vane backing pumps generate the necessary backing pressure so that the diffusion pump can always attain its full pumping speed and an ultimate vacuum
Technical datas
| Technical Parameter | VPS-30 | VPS-70 | VPS-150 | VPS-300 | VPS-600 | VPS-1200 |
| Gas Pumping Speed (L/s) --- for Roots (Mechanical Booster) Vacuum Pump | 30 | 70 | 150 | 300 | 600 | 1200 |
| Capacity (CU.MTR/HR) --- for Roots (Mechanical Booster) Vacuum Pump | 108 | 252 | 540 | 1080 | 2160 | 4320 |
| Gas Pumping Speed (L/s) --- for Rotary Vacuum Pump | 8 | 15 | 30 | 70 | 300 | 500 |
| Capacity (CU.MTR/HR) --- for Rotary Vacuum Pump | 28.8 | 54 | 108 | 252 | 1080 | 1800 |
| Iimited pressure (Pa) for rotary vacuum pump | 6×10-2 |
| Iimited pressure (Pa) for Roots (Mechanical Booster) pump | 5×10-2 |
| Total Electric Power (kw) | 1.65 | 2.6 | 6 | 9.5 | 10.7 | 20.5 |
| Main Pump Type | ZDL-30 | ZDL-70 | ZDL-150 | ZDL-300 | ZDL-600 | ZDL-1200 |
| Front Stage Pump Type | 2X-8 | 2X-15 | 2X-30 | 2X-70 | KT-300 | KT-500 |
| Wire size of power supply input ≥(mm2) | 1 | 1.5 | 3 | 4 | 6 | 8 |
| Power Supply | 50Hz, 380V (3 phase, 4 wire) |
| Gas Inlet Caliber (mm) | DN50 | DN80 | DN100 | DN160 | DN200 | DN250 |
| Gas Outlet Caliber (mm) | DN34 | DN60 | DN70 | DN90 | DN70 | DN90 |
| Overall Dimensions (mm) | 730×460×1000 | 790×550×1200 | 1050×600×1350 | 1320×780×1500 | 1450×860×2010 | 1680×1000×2690 |
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