JLSZY-10 integral casting high pressure dry combined transformer (integral casting high pressure metering box) is improved on the basis of similar products. It is suitable for rated frequency 50HZ and is an ideal replacement product for old oil-immersed metering box products. JLSZY-10 dry-type power metering box is composed of two single-phase fully insulated voltage transformers to form a three-phase "V" type connection, A and C phases are connected in series with two current transformers, and the rated voltage is 10KV.