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Ensure your uninterruptible power supply (UPS) with service from qualified engineers.

Generators are critical emergency power sources that ensure the continuity of your business's production when the grid power is interrupted. Periodic generator inspections are a legal and technical requirement to guarantee that this vital equipment can be reliably put into operation when needed. At AES Innovation, with our expert engineering team and test protocols compliant with the TS ISO 8528 standard, we offer comprehensive generator testing and maintenance services to businesses in Izmir and the Aegean Region.

The answer to the question of how to perform periodic generator inspections is a systematic protocol in accordance with the TS ISO 8528 standard. The TS ISO 8528 generator standard is a comprehensive international standard consisting of 11 sections that regulates the applications, performance declarations, and tests of alternating current generator sets driven by internal combustion engines. Published as a Turkish Standard by TSE in 2004, this regulation forms the basis of generator inspections.

How to Perform Periodic Generator Inspection: Comprehensive Test Protocol

Visual Inspection and Physical Examination

In the first stage, the physical condition of the generator is examined in detail. The engine block and its connections, alternator structure and terminals, fuel tank and fuel system, cooling system radiator and hoses, exhaust system and muffler, battery connections and electrolyte level, control panel and protection relays, cabinet and sound insulation condition, cable connections and terminals, oil level and leak checks are visually evaluated. Corrosion, oil leaks, loose connections and signs of abnormal wear are identified.

Electrical Tests and Measurements

  • Insulation Resistance Measurement: The insulation condition of the alternator windings is checked with a megohm meter. A value of at least 1 MΩ/kV is sought. Low insulation resistance indicates moisture, contamination, or winding aging and requires immediate intervention.
  • Grounding and Basic Electrical Parameter Tests:
    Grounding resistance is measured using the loop impedance method, with a target value below 10 ohms. Additionally, the generator is run idle to check if the output voltage is 380/400V and the frequency is 50 Hz.
  • Under-Load Performance and Phase Balance Check:
    Voltage and frequency stability are monitored while the generator is under load. Voltage/current symmetry between the three phases is measured; an imbalance greater than %2 between phases indicates a fault in the alternator windings.
  • Harmonic Analysis and Energy Quality Assessment:
    The quality of the energy produced by the generator is analyzed using the THD (Total Harmonic Distortion) value. A total harmonic distortion ratio below %5 is considered acceptable; higher values negatively affect equipment lifespan and energy stability.
WHY AES INNOVATION?

Ensure your generator is ready when you need it!

Generator periodic inspections are a strategic investment that ensures uninterrupted power supply, production continuity, and legal compliance for your business. Don't take risks; entrust your periodic inspections to professionals with our authorized engineers! AES Innovation's expert team is by your side with test protocols compliant with TS ISO 8528 standard, a mobile load bank system, and annual maintenance contracts.

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How to Perform a Generator Load Test

The answer to the question of how to perform a generator load test is one of the critical requirements of the TS ISO 8528 standard. Load testing is a comprehensive testing procedure that evaluates the performance, stability, and durability of a generator under specific load percentages. The test is performed in stages by connecting a load bank or an actual load.
The test protocol begins with running the generator at a load for 30 minutes. This is then increased to a load for another 30 minutes, followed by monitoring performance at a load for 30 minutes. Finally, a continuous operation test is conducted at full load (0) for a minimum of 2 hours. At each load step, voltage, frequency, current, power factor, engine oil pressure, coolant temperature, and exhaust temperature parameters are measured and recorded.

Generator Inspection by Qualified Engineers: Guaranteed Reliability and Validity.

Generator inspections carried out by our authorized engineers demonstrate that the technical competence of the inspection body, the expertise of its personnel, and the calibration of its testing equipment have been independently certified according to the TS EN ISO/IEC 17020 standard. Type A inspection body competence guarantees the reliability and legal validity of the inspection results.
Reports prepared by unauthorized individuals are not accepted in Ministry of Labor inspections and insurance compensation applications. During the independent audit process, the quality management system, technical procedures, personnel qualifications, calibration status of measuring instruments, and report archiving system of the inspection organization are examined in detail.

Frequently Asked Questions

At AES Innovation, we offer a complete service portfolio for generator maintenance with our expert engineering team, test protocols compliant with the TS ISO 8528 standard, and specialized engineering staff.

According to the Regulation on Health and Safety Requirements in the Use of Work Equipment, generators must undergo periodic inspections at least once a year by authorized Type A inspection bodies. For generators used intensively or in critical operations, a six-month inspection period is recommended.

The generator's periodic inspection is a comprehensive protocol that includes visual inspection, electrical tests, and load testing. The visual inspection examines the engine, alternator, fuel, and cooling systems. Electrical tests include insulation resistance, grounding, and voltage-frequency measurements. The load test evaluates the generator's performance at load levels of , , , and 0. All results are documented in a detailed report.

Yes, transformer inspection is a legal requirement under Law No. 6331 on Occupational Health and Safety. Failure to conduct periodic inspections increases employer liability in case of workplace accidents, prevents the payment of insurance compensation, and results in administrative fines during inspections by the Ministry of Labor. The use of standard report formats has also become mandatory from September 1, 2025.

Yes, periodic generator inspections are a legal requirement under Law No. 6331 on Occupational Health and Safety. Article III/2.3 of the Regulation on Health and Safety Conditions in the Use of Work Equipment mandates annual inspections of emergency power sources. In case of malfunctions in generators that have not undergone periodic inspections, insurance compensation will not be paid, and administrative fines will be imposed during inspections by the Ministry of Labor.

Generator load testing is performed in stages using a load bank or actual load. First, the generator is run for 30 minutes at load level , then tested for 30 minutes each at load levels and , and finally, a minimum of 2 hours of continuous operation is performed under full load 0. Voltage, frequency, current, engine oil pressure, coolant, and exhaust temperature are measured and recorded at each load step.

The TS ISO 8528 generator standard is an international standard regulating the applications, performance declarations, and testing of alternating current generator sets driven by internal combustion engines. The standard consists of 11 sections and defines generator power categories (ESP, PRP, COP, etc.). It was published as a Turkish Standard by TSE in 2004 and forms the basis of generator inspections.

Generator inspections conducted by our authorized engineers demonstrate that the technical competence of the inspection organization and the reliability of the test results are verified according to the TS EN ISO/IEC 17020 standard. Reports issued without authorization are not accepted in official audits and insurance applications. Type A inspection organization competence guarantees the legal validity of the inspection results and documents that your company fulfills its legal responsibilities.

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How can you contact us?

+90 850 532 71 89+90 312 806 45 71info@aesinn.comWhatsApp
+90 530 323 7068
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