Features: 1) This device can reach perfect effect to electromotor for oil field and clothing. This device can be applied to all kinds of three-phase electrical equipment especially some complicated equipment with heavy load 2) Usage: try to install it in front of electrical equipment and at the back of ammeter. As all the engineering products have been installed in the box, it is very convenient to install. After installing, all the indicator lights turned bright, the device begins to effect on electricity-saving 3) Work load: each J.S.D three-phase electronic power saving engineering contains six sets of three-phase electronic electricity saving devices. Its work load is 60kW, 380V, 50-60Hz, three-phase 4) Life span: six to eight years 5) Remark: the effect is distinct after a month, the longer time you use it, the more electricity you will save. Consider installing several electricity-saving engineering jointly if the load is heavy 6) The number of engineering that have to be installed equals to the total load of electricity/60kW 7) We also have our own appearance design patent