Bursa Transformer Periodic Inspection and Testing

The service concerns the power or distribution transformers identified in the proposal. Transformer rooms, grounding connections, cable and busbar terminations, and associated MV/LV equipment can be included through an explicit equipment list. Examining a transformer does not by itself establish that the complete electrical installation or every protection function has been tested.

Nameplate photographs, ratings, voltage levels, vector group, cooling arrangement, quantity and location establish the starting point. A single-line diagram, applicable manufacturer manual, previous inspection results and maintenance or fault history help select the work. Record missing documents and areas that cannot be accessed instead of assuming their condition.

Confirm the interval against the current provisions and equipment-specific criteria applicable to the actual installation, including any requirement for earlier examination. A formal periodic inspection, manufacturer-directed maintenance and fault investigation are different activities. The proposal should identify both the service ordered and the basis for its period.

Check the person’s eligibility for the equipment and voltage scope, required registrations and applicable contract arrangements before the inspection. An engineering title, company name or general accreditation statement alone does not establish eligibility. Complete EKİPNET and İSG-KATİP requirements where applicable using the current process.

Coordinate isolation and access with the responsible site team, accounting for parallel supplies, generators and other possible backfeeds. Isolation, proving absence of voltage and the work arrangement follow the authorized site procedure. Test connections, voltage, duration, discharge and grounding arrangements depend on the actual transformer and instrument instructions; this overview is not a switching or test procedure.

For oil-immersed units, agreed observations may cover the tank, bushings, radiators, visible leakage and fitted level or temperature indications. Dry-type work considers contamination, air passages, enclosure and fitted cooling or temperature equipment. Record which accessories are present and which functions were actually tested. Oil sampling or internal access is not automatically included in every inspection.

Ratio, winding DC resistance, insulation resistance and other measurements are selected against the purpose, construction, access, earlier results and manufacturer limits. Interpret readings with their connections, tap position, temperature and instrument conditions. HV withstand, no-load/load-loss and partial-discharge tests are not a default field inspection package; each needs an appropriate reason, method and test arrangement. A single measurement cannot exclude every internal defect. After winding DC-resistance testing, account for residual magnetism and any applicable demagnetization and return-to-service requirements in the transformer and instrument instructions.

Examination and continuity testing of protective or equipotential connections are distinguished from measurements of electrodes or the site grounding system. One earth-resistance reading alone does not establish touch/step voltage performance or complete installation compliance. Thermal observations require recorded loading, surface, line-of-sight and environmental conditions; a hot image alone does not prove a loose connection.

The agreed scope may include ventilation, access, signs, barriers, visible cable routes, oil containment and observable fire-related conditions. This is separate from certification of a complete building fire strategy, alarm system or suppression installation. If protection, trip or alarm functions are included, identify the tested chain and the endpoint reached.

The report identifies equipment, date, criteria, methods, instruments and relevant calibration information, conditions, results and findings. Unperformed tests, inaccessible parts and limits affecting interpretation remain visible. A positive conclusion is not assigned to an untested function, and the report does not record a repair as complete merely because it was recommended.

State the criteria used to assess the results. Historical comparison requires sufficiently comparable methods and conditions. Continued operation, restrictions, further diagnosis or repair are considered through the site’s responsible decision process in light of the findings. The inspection does not predict every later loading or fault condition.

Cleaning, manufacturer-directed servicing, component replacement, oil processing and repairs are separate work. DGA supports diagnosis through gas composition and trends; it does not replace other oil-quality or electrical investigations. Where sampling and laboratory work are requested, define the method, provider and delivered results. Agree any examination or testing required after corrective work.

Pricing depends on transformer and room quantities, ratings and construction, test points, access, outage arrangements, additional analyses and reporting needs. Share the location and operating schedule for sites in Nilüfer, Osmangazi, Yıldırım, Kestel, Gürsu, İnegöl and Bursa industrial areas. A written distinction between inspection, specialist testing and servicing makes proposals easier to compare.

Transformer maintenance, electrical-installation and grounding inspections, and high-voltage operating-responsibility arrangements can share a site programme. Each keeps its own responsible person, scope and record. Completing several activities during one visit does not turn the transformer inspection report into evidence that every related duty has been discharged.

Use the instructions for the actual transformer together with applicable inspection criteria and installation requirements. Examples from maintenance guides and factory tests cannot simply be transferred into a periodic field test. Send equipment identities, the latest available site report and the requested scope to begin preparing a proposal.