Outdoor totally-enclosed composite insulation three-phase combined mutual inductor

The invention discloses an outdoor totally-enclosed composite insulation three-phase combined transformer. The transformer comprises three single-phase combined transformers of the same structure anda base, the three single-phase combined transformers are arranged to be a phase A, a phase B and a phase C respectively and evenly arranged on the base, and a junction box and a low-voltage terminal of a high-voltage primary coil are correspondingly arranged on the two sides of the lower portion of each single-phase combined transformer; the low-voltage terminals of the three single-phase combinedtransformers are connected through a line bank, the line bank is connected with a grounding terminal strip, and the grounding terminal strip is connected with a grounding terminal on the base. The three-phase combined transformer is compact in structure, excellent in layout, accurate in metering and stable and reliable in performance, the outdoor complex operation environment is fully considered,the current part can achie