The insulation resistance tester is an important tool for testing the insulation performance of electrical equipment. Its advantages and disadvantages are summarized as follows:
1. Advantages
① Easy to operate
The design of the insulation resistance tester is intuitive, and users can complete the measurement through simple operation without the need for complex training.
Most devices are equipped with digital displays that directly read insulation resistance values, reducing human error.
② Efficient detection
Fast testing speed, complete insulation performance evaluation in a short period of time, suitable for batch equipment testing.
Supports high voltage output (such as 500V, 1000V, 2500V, etc.) and can detect the insulation resistance of equipment at different voltage levels.
③ Multi functional integration
Some models have absorption ratio (DAR) and polarization index (PI) measurement functions to assist in determining the degree of insulation aging.
Can store test data and support exporting to a computer for further analysis.
④ Security Design
Built in overvoltage and overcurrent protection mechanisms to prevent equipment damage or endangering operator safety during testing.
A test line with good insulation performance avoids the risk of leakage.
⑤ Strong portability
Handheld or miniaturized design, suitable for on-site testing, such as insulation testing of power lines, transformers, motors and other equipment.
2. Disadvantages
① Highly affected by the environment
Factors such as temperature, humidity, and pollution can significantly affect the test results and require measurement or correction in a suitable environment.
In high humidity environments, surface leakage current may cause measurement values to be underestimated.
② Unable to detect local defects
The insulation resistance tester can only reflect the overall insulation state and is difficult to detect local insulation defects (such as partial discharge, dendritic aging, etc.).
Comprehensive evaluation should be conducted in conjunction with other testing methods, such as dielectric loss testing and withstand voltage testing.
③ High operational requirements
Before testing, it is necessary to ensure that the equipment is powered off and fully discharged, otherwise it may damage the instrument or cause safety accidents.
Wiring errors (such as reverse connection of live and neutral wires) may result in measurement errors or equipment damage.
④ Accuracy limitations
When using low resistance insulation (such as less than 1M Ω), measurement errors may increase, and high-precision instruments need to be selected.
After long-term use, the aging of internal components of the instrument may affect measurement accuracy and requires regular calibration.
⑤ High cost
High precision and multifunctional insulation resistance testers are expensive and may increase procurement costs for enterprises.
summarize
The insulation resistance tester has the advantages of easy operation, efficient detection, and multifunctional integration, and is an essential tool for evaluating the insulation performance of electrical equipment. However, its disadvantages such as being greatly affected by the environment and unable to detect local defects need to be compensated for through standardized operations, environmental control, and other testing methods. Users should choose the appropriate model according to their actual needs and regularly maintain and calibrate it to ensure the accuracy of test results.
ZC-430C Digital insulation resistance meter also known as megohmmeter, high voltage insulation resistance tester, etc., for the insulation resistance test. The instrument has a large LCD screen gray backlit display, data storage, data access, alarm, automatic shutdown and other functions. At the same time, it also has the function of measuring DC voltage, AC voltage, absorption ratio and polarization index of DC voltage. It is suitable for measuring the resistance value of various insulating materials and the insulation resistance of transformers, motors, cables and electrical equipment.At the same time, it can output a variety of different voltage levels with the step-adjusting voltage function.
Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com
