To ensure the reliability, safety, and optimized performance of electrical transformers, the execution of periodic testing is essential. Boston Transformers, a specialist in electrical equipment solutions, offers a complete portfolio of tests in accordance with the most rigorous national and international technical standards.
Main Tests Performed on Electrical Transformers
Boston Transformers’ technical team is highly qualified to carry out a wide range of tests, using state-of-the-art equipment to guarantee precision and reliability of the results. Among the main tests performed are:
Electrical Tests
- Turns Ratio Test (TTR): Verifies the ratio between the number of turns in the primary and secondary windings, ensuring that the voltage is being transformed correctly.
- Winding Resistance Measurement: Measures the resistance of winding conductors, identifying possible connection issues, poor contacts, or broken turns.
- Insulation Resistance: Assesses the quality of the transformer’s insulation system, fundamental to preventing short circuits and ensuring operational safety.
- Insulation Power Factor (Tan Delta): Measures dielectric losses in the insulation, indicating the presence of moisture, contamination, or aging of insulating materials.
- Applied Voltage Test (Hi-Pot): Subjects the transformer to a high voltage to verify the dielectric strength of its insulation.
- Frequency Response Analysis (FRA): Detects mechanical deformations in windings that may have been caused by short circuits or improper handling during transport.
Insulating Oil Analysis
- Physicochemical Analysis: Evaluates insulating oil properties such as dielectric strength, water content, acidity, and interfacial tension, which indicate its preservation state and insulating capacity.
- Dissolved Gas Analysis (DGA – Gas Chromatography): Identifies the presence of gases dissolved in oil, which may indicate developing internal faults such as overheating, partial discharges, or electrical arcing.
The Importance of Accurate Diagnostics for Your Boston Transformer
Investing in a regular testing program with Boston Transformers means protecting your assets and ensuring the continuity of your operations. Accurate and early diagnostics allow for:
- Prevention of Catastrophic Failures: Detecting problems at an early stage, avoiding unplanned outages and high emergency repair costs.
- Extended Service Life: Corrective actions based on concrete data that prolong the transformer’s durability.
- Greater Operational Reliability: Ensuring that the transformer operates safely and efficiently within designed parameters.
- Reduced Maintenance Costs: Predictive maintenance is more cost-effective than corrective maintenance.
Contact Boston Transformers today and request a quote for transformer testing. Our team is ready to provide the best solution for your needs, ensuring maximum performance and safety for your equipment.