CMM-1H Oil Processing Unit
CMM-1H Oil Processing Unit
The СММ-1Н unit is designed for drying1Drying is a process of water removal from transformer oil., heating2Oil heating is used for treatment of oil in degassing, drying and regeneration machines to accelerate the process. Dehydration is based on the difference of water and oil boiling points. Since water boiling point is lower, heating can evaporate that water from the oil before the boiling point of oil is achieved. and filtration3Oil Filtration is a partial removal of solid particles through filter medium. Oil filtration systems generally use a multistage filtration with coarse and fine filters. Centrifugation is separation of oil and water, or oil and solid particles by centrifugal forces. of mineral transformer oil4Transformer oil is an oil that is stable at high temperatures and has excellent electrical insulating properties., as well as evacuation of transformer5A transformer is a static electrical device that transfers electrical energy between two or more circuits. tanks.
The process is based on application of heat and vacuum6Vacuum is space devoid of matter. An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure.. The oil is heated and pumped to the vacuum chamber. The low pressure in the chamber makes the water in the oil boil and evaporate. The water vapor is removed with vacuum pump exhaust.
The СММ-1Н unit consists of the following elements: a frame, a centrifugal oil pump (output), a vacuum pump7A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum., an electrical control cabinet, a vacuum chamber, filters8Filter is a device which separates solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass., an oil trap, piping, an instrument panel, an oil inlet and an oil outlet.
| No |
Parameter |
Value |
| 1 | Capacity, m3/hour, max | |
|
1 |
|
| 2 | *Processed oil parameters: | |
|
10 ppm or 5 ppm or 5 ppm+ (optionally) |
|
|
-/15/13 |
|
| 3 | Max oil temperature at outlet in heating mode, С |
90 |
| 4 | Outlet pressure, bar |
2,5 |
| 5 | Oil heater power, kW, max |
23 |
| 6 | Max power requirement, kW |
25 |
| 7 | Power supply: | |
|
400 |
|
|
50 |
|
| 8 | Dimensions, mm | |
|
1250 |
|
|
1750 |
|
|
1250 |
|
| 9 | Empty weight , kg, max |
750 |
*Note – Initial oil quality parameters:
- gas content: below 10.5 %;
- moisture content: below 0.01 % (100 ppm);
- temperature: above 0 °С.
- the unit is equipped with a centrifugal output pump to reduce noise;
- the unit does not have an input pump, the oil goes directly into the unit with reduced risk of leaks;
- simple operation;
- a porous inset in the vacuum chamber facilitates efficient moisture separation;
- the smart heating system varies current for the required processing rate, eliminating voltage surges;
- a water condensate collection container is installed;
- the unit features a separate outlet for transformer evacuation.
Components type – basic
Components type – premium
Manual performance adjustment by valves (or smooth performance adjustment, see option). Functioning in semi-automatic modes. Stepped or smooth (see option) oil heating. PLC control
Automatic performance adjustment. Functioning in automatic modes. Smooth oil heating. Control from PLC + HMI
Performance adjustment with manual valves
Performance adjustment of the oil pump is executed with a regulator on the control panel by means of a valve with an electric drive. Visual monitoring of the flow rate is by the flow meter indicator
Performance adjustment of the oil pump is executed by setpoint selecting at the control panel screen for maintaining the level in the vacuum column. Pump operation is smooth throughout the entire control range. There is a digital meter to control oil flow
The controller program switches the heater stages by contactors according to the algorithm. Operator sets the temperature and it is kept constant automatically
Solid state relay (SSR) adjusts the heater stages’ current smoothly and non-contactly. The P-Int-Derivative Controller
The language of text at the controller screen, devices, controls and the language of the technical documentation is English
The language of text at the controller screen, devices, controls and the language of the technical documentation is upon customer’s request
The 10 ppm mode is the standard operating mode of the equipment, which involves drying oil using thermal vacuum technology.
The 5 ppm mode ensures a very low level of residual moisture in the oil by reducing machine productivity. This means that the equipment effectively removes even the smallest traces of water, which significantly extends the service life of the equipment.
The 5 ppm+ mode is an improved version that ensures even lower residual oil moisture levels by using sorbent cartridges and reducing machine productivity. This is ideal for critical applications especially for heavily loaded transformers with high demands.
Capacitive transducer determines the activity of water dissolved in the oil and converts it into the absolute moisture content of the oil which entered the unit
Capacitive transducer determines the activity of water dissolved in the oil and converts it into the absolute moisture content of the oil which was processed by the unit
Capacitive transducer determines the activity of water dissolved in the oil and converts it into the absolute moisture content of the oil which entered the unit and which was processed by the unit
Mechanical flow meter with total flow display
Digital flow meter with current and total flow display
The cable is fitted with an industrial sealed connector, consisting of an internal plug and a cable socket
The cable wires’ ends are fitted with a crimp terminals
The cable is fitted with an industrial sealed connector, consisting of an internal socket and a cable plug
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