The invention discloses a
power grid structure for avoiding override
tripping of a small switch
station suitable for urban residential. The structure comprises: a
junction box, a digital display, a differential
relay, a magnetic seat button, a shell frame cover, a breaker square box, a storage battery box and a line cap crimping device. Through cooperation of the breaker square box and the line cap crimping device, a substation lead is inserted into a line cap shaft rod cover, when an
impact current is mistakenly operated, an insulating folded plate drives a rotating eccentric wire pressing head to form a circuit breaking protection effect, a cover cap square groove of a closing contact is erected on each air switch gate of a switch
station, so that a
jumper switching circuit to be subjected to override
tripping obtains the filtering
shielding effect of closed insulation
arc extinction of a pin column
barrel, and an I-shaped sectional column rotates to form a sectional treatment effectof the insulating folded plate, thereby achieving the
carding protection of one-to-one pipeline embedding, facilitating time division line detection during maintenance, and when the
tripping is achieved, the armature frame is high in on-off attraction definition, and the safe and accurate tripping protection circuit effect of the
power grid of the urban residential is guaranteed.