EDC LT5 Laboratory system for Partial Discharge measurement

In production, a Partial Discharge measurement identifies non-conforming parts and rejects them. In the laboratory the same measurement does much more: it tells which copper supplier produces tougher enamel, whether impregnation works, where the weak point of a new hairpin geometry lies. It is the tool with which materials, processes and designs are qualified before going into series production. ► Supplier qualification and comparison: enamelled copper and aluminum, insulating materials, impregnation resins ► Process validation: impregnation effectiveness, role of the phase separator, winding...

THE TOOL FOR THOSE WHO QUALIFY MATERIALS, PROCESSES AND PRODUCTSLABORATORY APPLICATIONS ► Supplier qualification and comparison. Measuring PDIV on samples wound with wire from different suppliers allows the optimal supplier to be chosen objectively, independently of the declared datasheet. ► Impregnation process validation. By measuring the same stator before and after impregnation, and comparing resin recipes, the actual insulation gain is quantified. ► Insulating material testing. Objectively assess the effectiveness of enamels, resins and phase separators under voltage stress, in conditions...

THE TEST THAT SEES WHAT OTHERS MISS A Partial Discharge is a localized electrical discharge that only partially bridges the insulation between two conductors. It is not a short circuit, it is its precursor. Every discharge leaves a micro-erosion in the dielectric; repeated over time under voltage stress, it leads to failure. In the laboratory it serves three purposes: choosing materials and suppliers objectively, validating processes before production, anticipating degradation before it becomes failure. Marposs E.D.C. laboratory tests on a sample stator and rotor simulate three realistic defects....

APPLICATION RANGE Wound stators ■ hairpin stators ■ coils ■ wound rotors ■ motorettes ■ wound wires ■ insulation samples. R&D laboratories, quality departments, supplier qualification, process validation, life testing. 19-inch 6U cabinet, external Windows 11 notebook. Floor-standing rack 600x700xH950 mm or bench with plexiglass chamber, industrial PC. NUMBER OF HV TERMINALS 3 terminals + GND ^ than 3 termina1s MAIN ELECTRICAL TESTS AC Hi-Pot with PD measurement ■ AC PDIV/PDEV with 50/60 Hz sinusoidal source ■ surge with PD measurement ■ PDIV ■ RPDIV/PDIV with impulse generator. OPTIONAL TESTS...

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