Distribution of Nynas transformer oils

Nynas transformer oils offer high dielectric strength, effective heat dissipation and long-term oxidative stability. They protect equipment from corrosion and degradation, ensuring its reliable and safe operation for many years.

Thanks to production facilities located in various parts of the world and an extensive logistics network, Nynas supplies transformer oils to over 170 countries, ensuring continuity of supply for both equipment manufacturers and projects carried out directly on site.

Nynas’ wide range of transformer oils

Transformer oils fulfil two basic functions – they provide electrical insulation and effectively cool transformers and other power equipment, such as circuit breakers and high-voltage switchgear. They must retain their properties over a long period, even when operating at high temperatures and under heavy loads.

How to choose Nynas transformer oil?

Choosing the right transformer oil affects the cooling efficiency, insulating properties and service life of the transformer. The Nynas range includes several oils from the NYTRO® series, which differ in quality grade, resistance to ageing and intended use. Below, we outline the key differences to help you choose the right product.

standard grade, high grade, super grade – how do they differ?

Nynas NYTRO transformer oils can be categorised according to their performance requirements.

• Standard Grade is a good choice for typical transformers and power equipment where operating conditions are stable and predictable. This group includes, amongst others, NYTRO Taurus and NYTRO Libra.
• High Grade is designed for more demanding applications. Oils in this grade offer higher oxidative stability and are suitable where the transformer operates under heavier loads or where minimising the frequency of servicing is important. Examples include NYTRO Lyra X and NYTRO Gemini X.
• Super Grade is the highest grade for the most demanding applications. NYTRO 10XN is ideal for critical infrastructure, installations where operational continuity is of paramount importance, and where maximum resistance to oil degradation is a priority.

Nynas oils in the Ecol range

This product is intended for use in power and distribution transformers, as well as other oil-filled electrical equipment. It is suitable for a wide range of applications where reliability, stable performance and a long service life are required.

When should you choose NYTRO Taurus?

NYTRO Taurus is the right choice when you need a tried-and-tested transformer oil for standard applications in the power sector and industry. It is a good choice for typical power and distribution transformers, where operating conditions are predictable and stable electrical insulation, effective cooling and reliable operation are of key importance.

Choose NYTRO Taurus if:

• the equipment operates under standard conditions,
• a good value-for-money solution is a priority,
• you are looking for oil for power or distribution transformers,
• there is no need to use High Grade or Super Grade oil,
• you want a tried-and-tested solution for a wide range of applications.

Its low viscosity and favourable viscosity index ensure highly effective heat dissipation from the transformer core and windings, supporting safe operation even under high loads. The oil also retains very good properties at low temperatures, enabling equipment to be started up without the need for additives to lower the pour point.

NYTRO Libra is characterised by high dielectric strength, meeting the requirements set for modern electrical insulating oils. The product is used in power and distribution transformers, rectifiers, circuit breakers and switchgear, ensuring effective electrical insulation and efficient cooling throughout its service life.

When should you choose NYTRO Libra?

NYTRO Libra is the right choice when you need a standard transformer oil to ensure the reliable operation of power equipment, but with an emphasis on stable performance and good cooling properties.

Choose NYTRO Libra if:

• you are looking for a Standard Grade oil for transformers and power equipment,
• you require good oxidative stability,
• effective heat dissipation is important,
• the oil is also to be used in rectifiers, circuit-breakers or switchgear,
• you need a solution for a wide range of standard applications.

The product is used in power and distribution transformers, rectifiers, circuit breakers and switchgear. It is particularly well suited to installations with demanding operational requirements and where it is important to minimise costs and the frequency of servicing.

When should you choose NYTRO Lyra X?

NYTRO Lyra X is the ideal choice for transformers operating in more demanding conditions, where standard oil may not be the optimal solution. It is a product designed for applications where resistance to ageing, operational stability and reduced maintenance requirements are of greater importance.

Choose NYTRO Lyra X if:

• the transformer operates in more demanding conditions,
• you require higher resistance to oxidation than that offered by Standard Grade,
• you want to extend the service life of both the oil and the transformer,
• you wish to reduce the frequency of maintenance,
• the application requires High Grade oil.

The product is used in power and distribution transformers, rectifiers, circuit breakers and switchgear. It is particularly well suited to installations with stringent technical requirements and where minimising the frequency of servicing is essential.

When should you choose NYTRO Gemini X?

NYTRO Gemini X is the ideal choice for equipment operating under heavy loads and where operational stability and reduced maintenance are particularly important. It is the solution for users who expect excellent performance and wish to minimise the risk of oil degradation in more demanding conditions.

Choose NYTRO Gemini X if:

• the transformer is operating under high load,
• the installation has increased technical requirements,
• it is important to reduce the frequency of servicing,
• you expect very high oxidative stability,
• you value reliability in a demanding operating environment.

This product is intended for use in oil-filled electrical power equipment, such as power and distribution transformers, rectifiers, circuit-breakers and switchgear. It performs particularly well in applications with the most demanding operational requirements, where reliability and minimising maintenance are key.

When should you choose the NYTRO 10XN?

The NYTRO 10XN is the ideal choice for critical infrastructure and the most demanding power generation applications. It is designed for installations where maximum resistance to oil degradation, a long service life and minimal maintenance are priorities.

Choose NYTRO 10XN if:

• the equipment is used in critical infrastructure,
• the application has the most demanding operational requirements,
• maximum resistance to oxidation and a long service life are key,
• you wish to reduce the risk of oil degradation,
• you wish to minimise maintenance work,
• the project requires Super Grade oil.

Selecting transformer oil

The choice of Nynas NYTRO transformer oil should be based on the equipment’s operating conditions, load level, required resistance to ageing, and the transformer’s importance to the continuity of the installation’s operation.

For standard applications, Standard Grade products such as NYTRO Taurus and NYTRO Libra are suitable. For more demanding applications, NYTRO Lyra X or NYTRO Gemini X are worth considering, whilst for critical infrastructure and the most stringent operational requirements, NYTRO 10XN is the best choice.

A well-chosen transformer oil supports effective cooling, safe electrical insulation and a long service life for the equipment. Therefore, before making a choice, it is worth analysing not only the price of the product, but above all the technical parameters, operating conditions and the expected level of reliability.