Transformer characteristic tester is a professional instrument used for comprehensive performance testing of current transformers (CT) and voltage transformers (PT). It is widely used in electrical testing departments of power research institutes, transformer manufacturers, power companies, and large industrial and mining enterprises. It can efficiently and accurately complete multiple key parameter tests in the laboratory or on site.



⚡ Main Test Functions

Such testers typically integrate multiple functions to achieve a comprehensive "physical examination" of transformers:

Voltage-Current (Excitation) Characteristic Test: This is the core function, used to plot the voltage-current characteristic curve of the transformer, determining its saturation point and linearity of operation.

Ratio and Polarity Test: Quickly measures the actual transformation ratio of the transformer and compares it with the nameplate value, while accurately determining whether the polarity is correct, ensuring the correctness of protection and metering circuits.

Error Curve Analysis: Automatically calculates and generates 5% and 10% error curves to evaluate the performance of protection-class transformers.

Secondary Circuit Inspection: Includes measuring the DC resistance of secondary windings, checking the actual secondary load, etc.

Other Functions: Many devices also support primary current injection test, core demagnetization, power frequency AC withstand voltage test, etc.