The utility model relates to a transformer substation generates heat and connects electrified scarce device that disappears, include that two drainage fasteners, both ends are connected with the reposition of redundant personnel wire of drainage fastener respectively, the drainage fastener includes cassette and one end and cassette threaded connection's movable rod at least, and the cassette is equipped with the opening in holding chamber and intercommunication holding chamber, and the movable rod stretches into the holding intracavity with the one end that the cassette is connected. When the problem appears generating heat in the joint, the drainage fastener that to shunt the wire both ends through the movable rod removes to the both ends that generate heat and connect, the fixture wire that connects both ends that will generate heat is put into to the holding intracavity of cassette through the opening, and stretch into the holding chamber through rotatory movable rod, press from both sides the fixture wire tightly in the cassette, flow through the load current who generates heat and connect, the fuel factor that low -heat connects is fallen, the realization connects generating heat to disappear to lack under the circumstances about not having a power failure to be handled, improve substation operation security and service reliability, avoid the loss that equipment trouble and interruption maintenance caused, it is scarce to disappear cost is reduced.