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Stators, Transformers, Inductors: Solving Issues of Testing for Safety and Quality

Safety and quality testing for defects or even potential defects in component windings like a layer short, corona or partial discharge, or flashover is critical in early phases of design and throughout production. Until now, makers of wound components like motor stators, transformers, and inductors required several instruments and multiple test stations active in order to comply with EC/UL standards.

This seminar will cover some of the standards related to these components, test equipment, and test methods to comply with those safety and quality standards. We will also introduce a new solution that performs multiple tests in one instrument; saving resources and increasing throughput. Tests include Impulse winding, hipot and flashover detection, insulation resistance, and DCR measurements.

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How to Use RF Impedance Measurements to Ensure the Quality of Miniaturized Power Inductors

Most high-frequency and miniaturized power inductors are metal molding-type inductors. The magnetic metal powder surfaces are usually treated with an oxide layer to reduce eddy current losses at high frequencies, enhancing the usable frequency range and reducing losses and temperature rising. However, users typically cannot determine the particle size of the magnetic material and the integrity of the oxide layer after molding and sintering through visual inspection alone.

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Leveraging Certificate Management Tools for Comprehensive EVSE Plug & Charge (PnC) Testing

Chroma’s PowerPro 5 software, part of its comprehensive EV test system solution, features a Certificate Management Tool that allows users to load specific certificate files (*.p12, *.pem). Using designated OEM agreements and contract certificates, the software automatically performs public/private key encryption and decryption during the test to achieve the handshake and payment processes required for ISO 15118 PnC testing.

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