Emek ATH-145 Transformer Authorized in Galicia: Key Guidelines for High-Voltage Installers

Key data

Installation and distribution companies for electrical measurement equipment in high voltage have had available since June 23, 2026 a new homologated model to operate in the network: the current transformer ATH-145 from Emek Elektrik Endüstrisi A.Ş., a Turkish manufacturer represented in Spain by Trafolec SL. The authorization is granted by the General Secretariat of Industry and Energy Development of the Ministry of Economy and Industry of Galicia, with validity throughout the national territory.

The resolution is relevant both for those already working with Emek equipment and for those evaluating incorporating this model into their catalog of installations in high-voltage networks.

What does this regulation establish?

The resolution authorizes the ATH-145 model as a current measurement transformer in high voltage, suitable for installation in the Spanish electrical network. Below are the authorized technical characteristics and conditions of use:

The authorization has a transitional nature: if new specific metrological regulations are approved for this type of equipment, the holder (Trafolec SL) must obtain the corresponding conformity assessment within a maximum period of one year from the effective date of that new regulation.

Additionally, the resolution establishes two verification obligations:

• Verification at source: each unit of the ATH-145 model must pass a verification performed by an officially authorized verifier before being installed.
• Periodic verifications: installed equipment must undergo periodic verifications throughout its entire useful life in the network.

Finally, since the authorization is valid throughout the national territory, the commercial documentation of the equipment must be available at least in Spanish.

Economic and operational impact

The direct impact of this resolution is operational, not economic in terms of new fees or penalties. However, it does generate process costs and obligations that should be properly assessed:

• Cost of verification at source: each unit of the ATH-145 must pass through an officially authorized verifier before installation. This procedure has a cost that depends on the contracted laboratory or verification entity, and must be planned in the work or supply schedule.
• Periodic verifications: generate recurring costs during the useful life of the equipment installed in the network. They must be included in maintenance contracts and operating budgets.
• Risk of regulatory change: if new metrological regulations are approved, the holder has only 1 year to obtain the conformity assessment. A delay in this process could leave the equipment without legal coverage to operate in the network.
• Documentation in Spanish: distribution companies must ensure that all commercial documentation for the ATH-145 is available in Spanish before marketing or installing it in Spain.

Who does it affect?

• Installation companies for electrical measurement equipment in high voltage operating in 145 kV networks.
• Electrical distribution companies that incorporate or evaluate incorporating the ATH-145 model in their installations.
• Trafolec SL, as the official representative of Emek Elektrik in Spain and holder of the authorization.
• Officially authorized verifiers who must perform source verifications of each unit.
• Maintenance companies for high-voltage electrical installations managing already-installed ATH-145 equipment.
• Purchasing departments and engineering technicians evaluating this model for electrical infrastructure projects.

Practical example

An electrical distribution company plans the installation of 10 units of the ATH-145 transformer in a 145 kV substation in Galicia. Before proceeding with any installation, each of the 10 units must pass source verification performed by an officially authorized verifier. This involves:

1. Contacting an authorized verifier and agreeing on the verification process before receiving the equipment at the work site.
2. Ensuring that Trafolec SL delivers commercial documentation in Spanish with each unit.
3. Planning future periodic verifications in the substation maintenance contract.
4. Monitoring if new metrological regulations are approved: in that case, Trafolec SL would have 1 year to obtain the conformity assessment, which could affect future installations of the same model.

If the company works with different transformation ratios depending on the measurement point, it can choose from the three authorized options: 300/5 A, 600/5 A or 1.200/5 A, all covered by the same authorization.

What should companies do now?

1. Verify if the ATH-145 is in your catalog or projects: if you already work with this model or have it planned, review that all source verification processes are covered before each installation.
2. Contract source verification: identify an officially authorized verifier and establish the protocol before receiving the equipment. No unit can be installed without this step.
3. Include periodic verifications in maintenance contracts: equipment already installed or to be installed must have mandatory periodic reviews scheduled.
4. Review commercial documentation: ensure that all ATH-145 documentation you handle is available in Spanish, as required by the resolution.
5. Monitor changes in metrological regulations: if new specific regulations for this type of equipment are approved, the adaptation period is only 1 year. Keep Trafolec SL and your technical department informed.
6. Plan authorization renewal: validity is 5 years from June 23, 2026. Mark the deadline on your calendar to manage the renewal before it expires.

Official source

View complete regulation at official source

Notice: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-13641