Transformer Oil

Transformer oil

Our Traöl is specially formulated by a leading German manufacturer of specialty oils to prevent arcing between live parts, extinguish arcs in switches, and efficiently dissipate heat. Thanks to its high oxidation resistance, it remains stable for longer and provides reliable insulation.

Properties of transformer oil

With excellent cooling capacity and a low dielectric loss factor ensures efficient heat dissipation and minimizes energy losses. Its high purity and flash point increase the safety and reliability of your electrical systems.

Our transformer oil meets the highest industry standards, including lubricating oil DIN 57370 - VDE 0370, IEC 60296 (82) Class I, II and III, ASTM D3487 Type I, ASI 1767 – 1975 and BS 148:97 Class I and II.

Key data of the transformer oil

Density at 15 °C: 0.875 g/cm³ according to DIN 51757
Viscosity at 40 °C: 10 mm²/s according to ASTM D 7042-04
Viscosity at -30 °C: 1000 mm²/s according to ASTM D 7042-04
Pourpoint: -48 °C according to DIN ISO 3016
Flash point: 150 °C according to DIN ISO 2592
Neutralization number: < 0.01 mg KOH/g ( DIN 51558 T1)
Color number (ASTM): 0.5 ( DIN ISO 2049)
Aromatic content: 10% ( IEC 60590)
Acid number: < 0.01 mg KOH/g ( ASTM D 664)
Interfacial tension: 48 mN/m
Corrosive sulfur: not present ( DIN ISO 5662)
Dielectric loss factor at 90 °C: <0.001 (IEC 60247)
Inhibitors: Not detectable wt.% ( IEC 60666)
Oxidation stability at 120 °C for 164 hours: IEC 61125 C
Mud: 0.16 wt.%
PCB content: not detectable
Packaging units: 20 l plastic canisters and 200 l metal drums

Trust in the quality and performance of our transformer oil to optimally protect your electrical equipment and maximize its operating efficiency.

SUBMIT INQUIRY

FAQ – Frequently Asked Questions about Transformer Oil

What is transformer oil used for?
Transformer oil serves as an insulating and cooling medium in oil-cooled electrical systems, especially in transformers and high-voltage equipment.

Why is transformer oil important for operation?
It prevents electrical arcing, dissipates heat, and contributes significantly to the operational safety and lifespan of the system.

What properties are crucial for transformer oil?
Important properties include high electrical dielectric strength, good thermal stability, low aging tendency and a high flash point.

How long can oil be used in transformers?
The service life depends on operating conditions such as temperature, load, and humidity. Regular oil checks help determine the optimal time for changing the oil.

Can transformer oil be refilled or replaced?
Yes, it is used for initial filling as well as for maintenance, refilling, and replacement purposes. Compatibility with the existing system should be ensured.

In which areas is transformer oil typically used?
In energy distribution systems, industrial and infrastructure projects, in mechanical and plant engineering, as well as in service and maintenance work.