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1982年，我们结合野外钻探施工特点和现有配备动力情况，设计了“XL”型动力配电箱，用以代替原来使用的油浸式自耦起动补偿器。1983年底由修配厂电工班试制八套。一、配电箱主要优点1．节约油料。使用这种配电箱，经初步计算，平均每台钻机一年可节约105公斤变压器油。按每公斤2元计算，合人民币210元，仅此一项八台钻机每年可节约1680元。
In 1982, we designed the “XL” type power distribution box to replace the originally used oil-immersed auto-coupling starter combined with the characteristics of field drilling and the existing power conditions. At the end of 1983, eight sets of trials were made by the electrotechnical workshop of the repair factory. First, the main advantages of the distribution box 1. Save oil. Using this distribution box, after an initial calculation, an average of 105 kg of transformer oil can be saved per year for each rig. Calculated at 2 yuan per kilogram, the sum of 210 yuan, only this one eight drilling rigs can save 1,680 yuan per year.