Transformer testing is a critical aspect of ensuring the reliability, safety, and performance of electrical transformers. At Varelen, we prioritize rigorous testing procedures to meet national and international standards, demonstrating compliance with regulations and exceeding industry expectations. We conduct tests in independent laboratories to validate the conformity of our transformers, ensuring they perform optimally under all conditions.
Transformer testing plays a vital role in maintaining system stability and ensuring transformers meet their design specifications. It involves a variety of tests to evaluate transformer performance, safety, and durability. These tests can be broadly categorized into routine, type, and special tests, each serving a unique purpose in the quality assurance process.
Routine tests are performed on every transformer to verify the design and manufacturing quality. These tests include:
Measurement of Winding Resistance: To assess the integrity of transformer windings.
Transformation Ratio and Verification: Ensures the correct ratio of primary to secondary windings.
Short-Circuit Impedance and Load Losses: Evaluates the performance under load conditions.
No-Load Losses and Current Measurement: Checks efficiency under no-load conditions.
Dielectric Tests: Verifies the insulation strength at industrial frequencies.
On-Load Tap Changer Tests: If applicable, these tests assess the functionality of tap changers.
Type tests are conducted on a prototype transformer to validate the design under standardized conditions. They include:
Heating Test: Evaluates thermal performance under load conditions.
Dielectric Lightning Impulse Test: Tests insulation performance against high-voltage surges.
Special tests are performed based on customer requirements or specific application needs. These tests include:
Noise Level Determination: Measures acoustic performance.
Short-Circuit Resistance Test: Conducted in official laboratories to assess mechanical robustness.
Climatic, Environmental, and Fire Behaviour Tests: Evaluates performance under extreme conditions, including climatic (C3), environmental (E3), and fire behaviour (F1) standards.
Seismic Test: Assesses performance during seismic activity.
Coating Verification and Weight Check: Ensures physical characteristics meet transportation and installation requirements.
At Varelen, we go beyond standard testing requirements by offering specialized testing in our advanced laboratories. Our ELECTRICAL LABORATORIES are equipped to perform all tests defined in IEC 60076 standards. Our CHEMICAL LABORATORY ensures rigorous material quality checks, from receiving materials to final process validation.
Transformer testing is not merely a procedural requirement but a cornerstone of quality and reliability. At Varelen, we are committed to thorough testing protocols to deliver transformers that meet and exceed the stringent requirements of global standards. Our investments in testing facilities and collaborations with independent laboratories underscore our dedication to quality, safety, and customer satisfaction. By choosing Varelen, customers gain confidence in the durability, efficiency, and performance of their electrical infrastructure.
