In early August our specialists delivered and commissioned a trailer mounted transformer oil degassing and oil purification system CMM-4/7 in Nigeria.
The company’s professionals started the system and provided personnel training for the client on site, specifically, at a transformer substations. The transformers underwent a full cycle fo repairs, transformer oil was processed to remove moisture and solid particulates, as well as gases, during oil treatment and adding of oil to the transformers.
Real time oil purification parameters were monitored online while the unit was operating. The unit worked 24/7, as the transformer required urgent repairs and transformer oil processing.Specifications of CMM-4/7 transformer oil thermo-vacuum purification system
Parameter |
Value |
|
1 |
Minimum capacity, m3/hour, |
|
– transformer oil degassing, drying, filtration mode |
4.0 |
|
– heating and filtration mode |
7.0 |
|
2 |
Capacity adjustment range, m3/hour |
0-4.0 |
3 |
Processed oil parameters: |
|
– max volumetric gas content,% |
0.1 |
|
– moisture content by weight, g/ton max |
10 |
|
– ISO 4406 purity class |
9 |
|
– solid particle content, g/ton max |
8 |
|
-nitrogen content after nitrogenation, % |
8.5±0.5 |
|
– filtration, micron |
1 |
|
– minimum breakthrough voltage, kV |
70 |
|
4 |
Max oil output temperature in heating mode, ºС |
90 |
5 |
Filtration ratio |
>50 |
6 |
Outlet pressure, MPa |
0.35 |
7 |
Output height relative to inlet, meters |
35.0 |
8 |
Oil heater power, kW |
50 |
9 |
Mean surface power of the heater, W/cm2, max |
1.1 |
10 |
Max power consumption, kW |
60 |
11 |
Electric power parameters |
|
– voltage, V |
380 |
|
– Frequency, Hz |
50 |
|
12 |
Dimensions |
|
– length |
1650 |
|
– height |
1590 |
|
– width |
1250 |
|
13 |
Weight, kg |
920 |
Note- * Initial oil parameters:
- volumetric gas content – below 10.5%
- moisture content by weight – below 0.01% (100 g/ton)
- temperature – above 0 ºС.