Multifunctional Safety Test Instrument

1、Basic Knowledge of Electrical Safety Performance

Insulation Resistance Test: Insulation resistance is an important electrical parameter that reflects the performance of insulating materials. This test can understand the insulation performance of the tested object, as well as the moisture or contamination of the insulation. It mainly measures the equivalent resistance value formed by the various associated networks connected between two endpoints and their periphery. Relevant regulations specify the minimum requirements for insulation resistance between conductors of different polarities, thereby ensuring the safe operation of electrical equipment.

AC/DC withstand voltage test: also known as electrical strength test, it can confirm whether to perform AC withstand voltage or DC withstand voltage test according to the power environment of the tested product. By applying transient or continuous high voltage several times the rated voltage between the energized parts and the shell of the tested product, it verifies whether there is breakdown in the energized parts of the tested product; during the test, the insulation parts of the tested product are subjected to abnormal stress, which can quickly identify insulation failure, electrical clearance issues, and other defects.

Ground Resistance Test: Ground continuity resistance refers to the connection resistance between the easily accessible metal parts of the tested product and the grounding terminal or grounding contact point. This test aims to verify whether the protective grounding measures are reliable and is a quantitative indicator of the grounding continuity of the tested product. By outputting a constant AC large current, it detects whether there are issues such as loose screws, too small grounding wire diameter, or open grounding wire in the tested product.

Potential balance test: Using a potential balance tester that outputs adjustable DC current, test the conduction resistance between the metal shell of each high-voltage component and the chassis, or measure the conduction resistance between the PE terminal of the charging port and the chassis within a distance of no more than 2.5 meters.

The connection impedance between all tested parts and the frame should not exceed 0.1 Ω. A four-wire (V-Sense) measurement method is used to eliminate contact thermoelectric potential and reduce measurement errors.

2、The IDI-M61XX-E series analyzer has four detection items, which can all be combined or individually selected for one or two items. The four tests can be completed in as fast as 2.5 seconds, allowing for multi-step testing and cycle testing. The testing is fast, with high measurement accuracy, stable and reliable performance, safe and convenient measurement methods, and high integration friendliness, which can significantly improve work efficiency. The equipment adopts the most advanced design concept and complies with the latest relevant national standards. It features a standard 3U rack-mount design, with output channels on both the front and rear panels to meet application scenarios of integrated embedded or standalone use, offering high flexibility and facilitating third-party metrological verification after deployment.

3、Equipment Selection