bar tap changer electronic transformer switch

With the frequency of 50Hz, 60Hz, the rated voltage of 10KV, 35KV, the rated current od 63A, 125A, 250A, the voltage-regulating places are end section, middle part and neutral part. It can be directly fixed on the box-cover of the transformer, under the condition of non-excitation electronic transformer switch, regulating and changing. (1) The tapchanger with current of 63A applies to the box-cover of the transformer 5 8mm; (2) The tapchanger with current of 125A applies to the box-cover of the transformer 6 10mm; (3) The tapchanger with current of250A applies to the box-cover of the transformer 8 12mm; (4) If customer has a special requirements, please give an explanation when ordering;