It usually refers to an automated device used for testing key equipment such as transformers or high-voltage switches



“Characteristic Comprehensive Tester” is a general name referring to various professional instruments used to detect the electrical characteristics of specific equipment. In the power industry, it usually refers to an automated device used for testing key equipment such as transformers or high-voltage switches.

Here are several common types of characteristic comprehensive testers:

⚡️ Transformer Characteristic Comprehensive Tester

This type of instrument is core equipment in preventive tests and maintenance of power systems, mainly used for comprehensive performance testing of current transformers (CT) and voltage transformers (PT).

Main Functions

Voltage-current characteristic (excitation characteristic) test: Automatically measures and plots the V-I characteristic curve of CT/PT, judges the core quality and whether there is inter-turn short circuit in windings, and automatically calculates the knee point value.

Ratio and polarity measurement: Precisely measures the transformer ratio and determines whether the polarity is correct.

Error curve calculation: Automatically calculates and displays 5% and 10% error curves to evaluate the saturation margin of protective transformers.

Other tests: Usually integrates multiple test functions such as ratio error/phase error, secondary winding resistance, secondary burden, AC withstand voltage, primary current injection, and automatic demagnetization.

Core Advantages

High automation: One-click completion of voltage/current boosting, data acquisition, curve plotting, and result analysis, replacing traditional tedious manual operations.

Multi-function in one machine: A single unit can complete most routine test items for transformers without the need for external auxiliary equipment such as voltage regulators and current boosters.

Safety and convenience: Mostly powered by single-phase AC 220V, simplifying on-site wiring and improving operational safety. Built-in data storage and micro printer facilitate on-site report generation.