What is PD IEC TR 60076‑26 about?
PD IEC TR 60076‑26 is part 26th of a multi-series standard that covers functional requirements of insulating liquids in power transformers that ensure cooling of transformers and prevention of failure for the expected lifetime of transformers.
PD IEC TR 60076‑26 covers functional requirements of insulating liquids that are considered necessary for use in power transformers including reactors and HVDC transformers.
PD IEC TR 60076‑26 also covers a relevance index of importance for design and for service as well as the status of validation is given for all individual requirements (parameters).
In PD IEC TR 60076‑26 all parameters are assigned to one of the following categories:
- General (physical/chemical)
- Dielectric / Insulation
- Thermal / Cooling
- Ageing and Stability
- Liquid-solid system
- Material compatibility
PD IEC TR 60076‑26 is intended to serve as a general reference document for the transformer industry, including liquid suppliers as well as relevant scientific and technical bodies dealing with insulating liquids (materials).
Who is PD IEC TR 60076‑26 for?
PD IEC TR 60076‑26 on insulating liquids in power transformers is applicable to:
- Manufacturers of power transformers
- Dealers and importers of power transformers
- Insulation liquid suppliers
- Safety inspection services
Why should you use PD IEC TR 60076‑26?
Insulation liquids provide protection to power transformers which play a pivotal role in transmission networks for stepping up or down the voltage level. Insulation liquids act as a coolant for coil and winding assembly and have fault detection features.
PD IEC TR 60076‑26 provides you with functional requirements of insulating liquid necessary for power transformer application which is assembled and listed in a structured manner.
PD IEC TR 60076‑26 provides you guidance on physical and chemical functional requirements which includes density, vapour pressure, water content, moisture, flash point, acidity, lubricity, foaming and more which ensure proper handling and storage of the insulating liquid.
PD IEC TR 60076‑26 also provides you guidance on thermal and cooling requirements which includes viscosity, cold start, heat capacity, pour point, thermal conductivity and cloud point to ensure the operational safety of power transformers at high and low temperatures.
Guidance in PD IEC TR 60076‑26 also includes functional requirements that cover dielectric, ageing, stability, liquid-solid system and material compatibility which ensures the operational integrity, prevention of failure for the expected lifetime of power transformers.
