Abstract: A treated water tank in oil sand plant, comprising a first housing; an inlet provided in the first housing, through which a treated water flows in; an outlet provided in the first housing, through which the treated water stored is discharged; a second housing installed in the upper side of the first housing and communicated with the first housing by a pressure-controlling pipe; a gas discharge pipe provided in one side of the second housing for opening to the air; and a gas curtain provided in the second housing for preventing the treated water stored in the first housing from being in contact with the air. The treated water tank in oil sand plant according to the present invention simplifies the process of producing the treated water to be reused from the production water, reduces the risk of environment contamination due to the reuse of more purified treated water.

Abstract: Disclosed is an automatic transfer switch. According to the exemplary embodiment of the present invention, the automatic transfer switch alternatively supplying power from a commercial power terminal and an emergency power terminal to load terminals by moving a pair of movable contactors, wherein at least one of the pair of movable contactors are integrally formed with the commercial power terminal or the emergency power terminal through a wire made of a flexible material.

Abstract: Provided is a one body-type power transfer switch, in which a disconnecting portion is integrally formed to reduce errors arisen due to accumulated assembly tolerance and simplify manufacturing processes, thereby improving operators' convenience. The one body-type power transfer switch includes a normal power terminal or an emergency power terminal, a module including a load terminal formed at a lower portion of a side of the module so as to be spaced apart from the normal power terminal or the emergency power terminal, wherein the module is formed using an injection molding method, and side walls are integrally formed to have insulating power.

Abstract: Provided is a cover for protecting an upper end of a normal power terminal and an upper end of an emergency power terminal of an auto transfer switch. In this case, terminal covers are formed on the upper ends of the terminals to protect the terminals, thereby preventing operators from being hurt by electric shock.

Abstract: A cover of an electrically-connected portion of an auto transfer switch, which is detachable and includes an arc guide portion.

Abstract: An electric power supplying apparatus for a rock explosion cartridge is disclosed. The apparatus includes the following elements. A power source generates an electric energy. A plurality of channels consist of capacitors for storing an electric energy from the power source, explosion cartridges for being exploded by the electric energies of the capacitors, and input switches for switching the capacitors. A controller controls the turning-on/off of the input switches of the plurality of the channels, and the plurality of the channels are connected to the controller in parallel. There are further included the following elements. That is, a charging switch switches a connection between the power source and the capacitor. A discharging resistor is connected to the capacitor in parallel, and a discharging switch switches a connection between the capacitor and the discharging resistor, while the controller controls the turning-on/off of the charging and discharging switches.