Bursa HV Operation Responsibility and Transformer Responsibility

High voltage operation responsibility is a technical responsibility service carried out by an authorized electrical engineer to ensure that MV/HV facilities above 1 kV are operated safely, systematically and in compliance with applicable regulations. Transformer substations, MV switchgear, switching operations, maintenance planning, grounding systems, protection schemes and reporting activities are evaluated within this scope.

An HV operation supervisor monitors the condition of the transformer substation and MV switchgear, prepares switching instructions, checks safe working conditions during maintenance and repair activities, provides necessary information to operating personnel, ensures that tests and inspections are recorded and reports identified deficiencies to the business in writing.

For transformer substations supplied at MV/HV voltage levels and falling within the scope of facilities above 1 kV, working with an authorized HV operation supervisor in accordance with relevant regulations is required. This requirement is important for safe operation of the facility, organization of maintenance processes and reduction of possible fault or occupational accident risks.

In practice, these two terms are often used for the same service. In businesses with privately owned transformers, the transformer substation is considered within the scope of MV/HV facilities above 1 kV, and operation responsibility is carried out by an authorized electrical engineer. However, the service is not limited to the transformer only; MV switchgear, switching processes, protection systems, grounding, maintenance planning and reporting are also part of this responsibility.

Factories located in OIZs and supplied from their own transformer substations at MV/HV voltage levels are evaluated within the scope of operation responsibility. In these facilities, the transformer substation, MV switchgear, switching arrangement, grounding system and maintenance processes must be followed up by an authorized engineer.

Within the scope of the service, the general condition of MV switchgear, circuit breakers and disconnectors, earthing switches, transformer oil level, leakage condition, temperature indicators, ventilation, grounding connections, single-line diagram, switching instructions, warning signs, occupational safety equipment and maintenance records are inspected. Depending on the facility’s needs, grounding measurements, thermal camera inspections, relay tests and power quality measurements may also be planned separately.

The process starts with a site survey and current condition assessment. Transformer power, number of MV/LV switchgear cells, facility structure, single-line diagram, maintenance status and operating conditions are evaluated. Then the contract scope, visit frequency, reporting structure and planned inspections are clarified. During periodic visits, deficiencies are reported and an action list is provided to the business.

The fee for HV operation responsibility is determined according to transformer power, number of transformers, number of MV/LV switchgear cells, facility size, location, visit frequency, scope of tests to be performed, emergency support and reporting details. Pow-Sys Power Systems prepares a transparent offer for your facility in Bursa by taking into account the current minimum fee tariff and the service scope.

Businesses that do not work with an HV operation supervisor may face administrative sanction risks in terms of relevant regulations and distribution company processes. In addition, in the event of an electrical fault, fire, equipment damage or occupational accident, the legal and technical responsibility of the business may increase. Therefore, operation responsibility is not only an official procedure but also an important requirement for facility safety.

As Pow-Sys Power Systems, we provide services for industrial facilities, factories and privately owned transformer facilities based in Bursa. We can carry out site survey, contract, inspection and reporting processes for facilities in the Bursa, Demirtaş, Nilüfer, Kayapa, Hasanağa and Kestel organized industrial zones, as well as Gürsu, Osmangazi, Nilüfer, İnegöl, Gemlik, Mudanya and Karacabey.

The HV operation responsibility certificate, currently referred to as the YGTİS certificate, is an authorization certificate issued for relevant engineering disciplines that meet the training, membership and competence requirements determined by the Chamber of Electrical Engineers. Engineers holding this certificate can provide operation responsibility services for high voltage facilities within the scope of relevant regulations. Businesses should work with engineers who have current and valid competence.

The validity, renewal and training conditions of the HV operation responsibility certificate are evaluated according to the current regulations of the Chamber of Electrical Engineers. From the business perspective, the important point is that the engineer providing the service meets current requirements and carries out the operation responsibility duty in compliance with regulations.

No. Transformer maintenance covers maintenance, testing and inspection procedures for the transformer and related equipment. HV operation responsibility covers a wider area, including safe operation of the facility, switching processes, follow-up of the maintenance plan, regulatory compliance, reporting and technical guidance to the employer and facility management. When necessary, these two services can be planned together.

When requesting an offer, not only the monthly fee but also the service scope, visit frequency, reporting structure, inspections to be carried out, emergency support, number of transformers and switchgear cells, field responsibilities and regulatory compliance should be evaluated together. Pow-Sys Power Systems clearly states which inspections will be performed and what the service scope includes in its offer file.

Yes. A site survey is useful for preparing the correct offer and defining the correct service scope. During the survey, transformer power, number of switchgear cells, general condition of the facility, access conditions, maintenance history, available documents, single-line diagram and safety equipment are evaluated. This allows an inspection and reporting plan suitable for the actual needs of the business to be prepared.

Proposal timing depends on how ready the facility information is. When transformer power, number of MV switchgear units, facility location, current single-line diagram and expected visit frequency are shared, the preliminary scope can be prepared faster. For facilities requiring an on-site survey, the final proposal is clarified after field review and authorized engineer assessment.

An approximate scope can be discussed based on preliminary information; however, final price and risk level are not confirmed without on-site survey, current document review, transformer substation structure, number of MV switchgear units, maintenance history and contract scope assessment. This approach is necessary to define both customer expectations and technical responsibility boundaries correctly.

Grounding measurement, relay testing, thermal imaging, transformer maintenance and oil analysis may be stated as needs in the HV operation responsibility report; however, they are usually planned as separate testing, measurement or maintenance services. The main service covers technical follow-up, reporting, nonconformity notification and the operation responsibility process.

The process in Bursa organized industrial zones follows the same core steps as elsewhere: site survey, contract scoping, periodic inspection visits, written reporting and open action tracking. For OIZ factories fed from their own transformer substations, the survey reviews transformer capacity, MV cell count, the single-line diagram, switching arrangement, maintenance records and safety equipment condition. Pow-Sys serves facilities in the Bursa, Demirtaş, Nilüfer, Kayapa, Hasanağa and Kestel organized industrial zones as well as surrounding districts, and the visit plan is aligned with the facility's production schedule. Findings are reported with risk priority, responsible party and follow-up date, and separately planned works such as maintenance, testing or measurement are clearly marked so the OIZ business can manage its technical file and proposal comparisons transparently.