Resonant AC Test System / AC Resonance Test System - Test Precautions? The test precautions for the AC resonance test system are as follows: I. Detailed Preparation Before the Test 1. Parameter Matching Calculation: Accurately estimate or measure the capacitance of the test specimen, calculate the expected resonant frequency, and rationally configure the reactor combination and taps to ensure that the system resonant point falls within the operating frequency range of the device. This is the foundation for a successful test. 2. System Inspection and Grounding: Check that the excitation transformer, reactors, voltage dividers, and other...