When researching safety standards in the industry, many people may notice that most safety standards require a withstand voltage test. And when performing this test, there will be doubts about how the DUT is properly connected to the tester. Therefore, Huayi Electronics will tell you what hipot test is through a simple introduction, and teach you to complete the basic hipot test configuration to solve the problems you may encounter. Plus, we'll share some tips on how to make your tests more accurate so you can overcome them with confidence!
Learn about hipot testing
The hipot test, also known as the dielectric strength test or high voltage test, is a fairly common electrical safety test in international standards. The purpose of this test is to verify the insulation integrity of the DUT by inputting a voltage to the DUT that exceeds normal operation, and also to detect any weaknesses or insulation faults in the equipment. Ultimately, the DUT should not break down during this test.
Get to know your DUT
Before diving into hipot test configurations, it is important to know the specifications of your DUT, especially the rated voltage. The rated voltage directly determines the test voltage. For example, most standards recommend using a test voltage calculated as 2 times the rated voltage of the product plus 1000V.
The DUT is connected to the tester
When performing a hipot test, follow these steps to use two test lines: a high-voltage line and a return line to connect the DUT to the test instrument
Insert the black ground return route into the "return" terminal of the instrument.
Insert the high-voltage wire into the instrument's "h."v."(High-voltage) terminals.
Connect the clips of the high-voltage wires to the current-carrying conductors (short-circuit live wires and neutral pins) of the DUT circuit.
Connect the clamp of the ground return route to the exposed or uncharged metal housing of the object to be measured.
The above hipot test configuration is suitable for testing DUTs with bare metal housings, if your DUT housing does not have any exposed metal parts, you can wrap the DUT housing with foil and then attach the return route to the foil. The diagram below shows how to connect the tester to a test object that is not in an exposed metal housing.
To make testing easier and more convenient, you can use a test fixture box to simplify test setup. The diagram below shows how to connect the test fixture box to the SCI 290 Hipot Tester and the DUT.
The secret to improving the accuracy of your tests:
Choose the right accessories: Don't underestimate the importance of accessories. High-quality and compatible accessories are essential for accurate test results and operator safety, such as test lines and test fixture boxes. The use of inappropriate or unapproved accessories can cause serious hazards, endangering the safety of the operator and damage to test instruments and equipment.
The Importance of Calibration: Ensure that your test instruments provide accurate measurements through regular calibration. This includes comparing the device's readings to the standard, identifying any deviations, and making the necessary adjustments to ensure accuracy and reliability.
Prioritizing electrical safety: Safety is always a priority!Choose the appropriate electrical safety tester and adhere to safety standards to establish a high-throughput and high-safety test environment. Don't forget to wear the necessary personal protective equipment (PPE) to keep you and your team members safe.
The right test instrument: Hipot testing can be very complex or simple, depending on your application. Huayi Electronics offers a range of easy-to-use electrical safety testing instruments to meet your various needs. If you need a small and easy-to-use hipot tester, the SCI 290 series hipot tester is the perfect choice. Its simple and intuitive knob operation allows you to quickly set test parameters, ensuring accurate measurements and product safety. If you are looking for a test instrument with advanced features for more complex test applications, Huayi Electronics' electrical safety test instruments are a suitable choice. The EST-300 and SE series feature a touch-screen for easy setup, making test setup simple and intuitive and efficient. In addition, the 7470 series offers an ultra-high output voltage of 20kV, making it ideal for the special needs of ultra-high withstand voltage test voltages.
Application Consulting Services: If you or your team are testing for the first time or facing specific testing challenges, it can be helpful to seek professional consulting services. The service provides guidance on test theory and procedures, as well as hands-on instruction to help you familiarize yourself with the entire testing process. Working with our experienced consultants can greatly improve your testing efficiency and effectiveness.
In this article, we discuss the basic hipot test configuration in the electrical safety test standard, which can help you increase your knowledge and confidence in connecting your DUT to an electrical safety tester. If you have any other questions or need help, please feel free to visit Huayi Electronics official ** or WeChat *** test happy!