IEC EN 61857-32 Electrical Insulation Systems - Thermal Evaluation Procedures - Part 32: Multi-Factor Evaluation with Increasing Factors During Diagnostic Testing

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of IEC EN 61857-32 testing. The IEC EN 61857-32 series focuses on applications where other possible factors must be included in order to assess any effect on the performance of the electrical insulation system (EIS). Multifactor evaluation is the most complex type of project to design and execute.

Clear guidelines are needed to provide the user of this standard with a uniform approach and method of analyzing test results. This standard is for applications where voltages are some combination of other influence factors defined in IEC EN 60505. Multifactor voltages are applied during the diagnostic portion of each test cycle.

Here are a few examples of other influencing factors or multifactorial stressors:

• high vibration;
• Immersion in oils, water or solutions;
• Voltage higher than the test voltage of the reference EIS;
• Reduced cold shock temperature.

The design of test objects should be in accordance with the chosen test method. When part of the evaluation is to compare renders or alternative designs of the same working product, the changes will be part of the multi-factor test object structure with all changes documented in the report.

The main candidate EIS and EIS, which are evaluated along with other/increasing stresses, are expected to use the same materials and have the same design and construction. The only factor that is expected to differ between two sets of test specimens/objects is diagnostic stress during the diagnostic portion of the evaluation, unless the purpose of the test is to evaluate a manufacturing/process change.

EUROLAB assists manufacturers with IEC EN 61857-32 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.