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Transformer oil purification

Transformer oil purification: Transformer oil has the duty of cooling and insulating in it . The transformer’s efficiency and life time depend on its suitable maintenance. The oil quality is another important factor so controlling the oil condition is a good way to increase the transformer’s life time. As there is no need to replace the oil with the new one, We can decrease the costs too.

some conditions can result in oil deterioration e.g copper catalyst,iron filings,electric arc,moisture,oxygen with an increase in temperature are the main factors that decrease the oil quality and cause deterioration. Some of these problems are:

Increasing the acid number, moisture, dielectric dissipation factor and decreasing interfacial tension,electric strength (breakdown voltage),dielectric resistance,also the oil color gets blurry.

According to the problems mentioned above, we need an equipment called transformer oil purification machine. Niroonamad Khorasan has manufactured it in different capacities( from 500 to 20000) and different types(stationary, trailer,…) which can purify the oil even in situation that the transformer is on-load without any suspension . These machines also provide the ability to filtrate oil under vacuum circumstances as well.

Some advantages of this mechanism ( ON LINE mode):

1- Protect the transformer during the oil filtration process.

2 – Prevent oil discharge beyond the normal range

3- Prevent air bubbles entering the transformer along with the oil, using two vacuum tanks.

4 – Sludge removal is done so slowly that avoids formation of floating sludge and deposits in oil.

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234 789 intends to prolong the lifetime of oil and transformers and offer consultancy services to industries as a reliable consultant.

Device Capabilities:

1 – Changing the moisture level from 50 ppm to less than 3ppm

2 – degassing the oil from % 10 vol to less than% 0.1 vol

3 – changing breakdown voltage from 30 kV to above 75 kV

Benefits Of units manufactured by Niroonamad Khorasan :

• High Speed and high Efficiency providing reliable test results at the least time

• getting equipped with a monitoring system and a temperature controller

• Using water traps to avoid moisture into vacuum system

• Using a large vacuum tank with different layers in order to increase the active surface area and accelerate the separation of dissolved gases and moisture from oil.

• appropriate installation of equipments for easy operation and easy servicing.

• Easy installation of components without welding.

• Ability to change the oil inlet and outlet flow

• Possibility of oil refining and evacuating the transformer simultaneously.

• Using two sets of vacuum in order to achieve maximum vacuum pressure (1 torr or 1 mbar).

• Using Electronic eye to see the oil foam.

• Installing mechanical and electrical level gauge and sensors to monitor fluid’s level and prevent the oil from leaving the vacuum path.

• electrical connections between the heaters, motors and Valves.

• Optimum energy consumption by eliminating additional consumers using adequate oil inlet flow.

• Using suction pumps and oil injectors separately.

• Using six contactors in high-capacity equipments for heating(in order to facilitate appropriate loading proportional to power supply).

• using indirect heat for oil (to prevent oil ionization).

• continuous oil flow during the process.

• Ability to adjust the oil level easily.

• Using a pre filter (a 10 micron filter)for adsorbing metallic and large particles.

• Using two separate filter tanks(input and output) with 5 and 3 micron mesh respectively capable of adsorbing the smallest particles as soon as they enter the system.

• Applying sensors sensitive to fluid along the heater path and also element protective thermostat to protect the heating system.

• Digital monitors.

• Using alarms for detecting the defects.

• Using very high quality components.

• Offering Services and after sale services.