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  • Precautions for Transformer Winding Deformation Testing Machine

    The UHV power professional production transformer winding deformation tester can help many power workers conduct various power tests more conveniently.

    HTY_1355

    Precautions for determining transformer winding deformation:

    a) The necessary conditions for transformer winding deformation are outlet short circuit, near-field short circuit, multiple overcurrent actions, and collisions during transportation;

    b) The frequency response curves of the low-frequency part (tens of kHz) can generally overlap well, otherwise it is suspected that the test wiring has poor contact;

    c) Generally speaking, transformers of 35kV and below (including those undergoing factory renovation) may have poor frequency response characteristics, and original data comparison should be retained during handover;

    d) The measured frequency response curve is generally between+20 and -80 dB. If exceeded, check whether the test circuit has poor contact or disconnection;

    e) When the angle winding is tested separately, the three-phase frequency response characteristics may not be consistent;

    f) Balancing windings may result in inconsistent three-phase frequency response characteristics;

    g) Severe distortion of windings can affect the frequency response characteristics of adjacent windings;

    h) Due to poor craftsmanship, the frequency response characteristics of transformer windings may not be consistent in some small factories and on-site maintenance transformers;

    i) There is evidence to suggest that temperature has an impact on frequency response characteristics;

    j) When the entangled winding has transposed conductors, the frequency response characteristics of the transformer winding may not be consistent;

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