21059-3

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21059-3 is a label in the American National Standard (ANSI). It is the standard used for high voltage substation transformers, which includes safety guidelines and installation instructions. These standards follow general guidelines and safety protocols to ensure the highest level of safety and performance in an electrical transformer. This standard is also used in Canada, the United Kingdom, and other parts of the world.

The first part of the 21059-3 standard covers the general application field for high voltage substation transformers. This includes the requirements for the installation of the transformer, the types of enclosures, labeling, and other factors. Additionally, this section includes a listing of the applicable codes and standards for the electrical equipment used in the installation.

The second part of the standard is focused on the working principle of high voltage substation transformers. This includes the basic design of the transformer, the oil for insulation, construction, cooling, and the acceptable levels of voltage levels. Additionally, this part covers the maintenance and safety requirements for the equipment.

The last part of the standard covers the specific testing and installation of the high voltage transformer. This part covers the installation procedures for the winding, insulation, and assembly of the transformer. Additionally, it covers the requirements for testing and inspection to ensure that each component is functioning correctly. This section also includes the requirements for commissioning a high voltage substation transformer.

The 21059-3 standard is an important part of safety for high voltage substations. It is used by engineers and technicians to ensure that all components are performing correctly, that all safety protocols are followed, and that the highest electrical safety levels are maintained. It is important to follow this standard as it helps to protect people, property, and the environment from electrical shock.

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