Characteristic comprehensive tester supports AC withstand voltage test



The "characteristic comprehensive tester" in the industrial and power fields usually refers to a CT/PT (current transformer/voltage transformer) characteristic comprehensive tester. It is a highly automated specialized device mainly used for comprehensive performance testing of transformers in power systems, laboratories, and on-site.

Here is a detailed introduction to the core functions, technical features, and common parameters of such instruments:

⚡ Core Test Functions

Such instruments typically integrate multiple test functions and can perform multiple tests on protection and metering transformers with a single unit:

Voltage-current characteristic (excitation characteristic) test: Automatically plots the transformer's voltage-current characteristic curve and automatically calculates the knee point voltage/current values.

Ratio and polarity test: Precisely measures the transformer's ratio (e.g., CT ratio up to 25000A/5A) and accurately determines its polarity.

Error curve test: Automatically calculates and provides 5% and 10% error curves according to national standards (e.g., GB1207, GB1208).

Secondary circuit and load test: Includes secondary winding resistance measurement, secondary actual load (burden) test, and secondary circuit inspection.

Other comprehensive tests: Supports AC withstand voltage test, automatic demagnetization of the core, primary current flow test, and measurement of ratio error and phase error.