A instrument loss preventive device for electric power system

The utility model provides an instrument loss preventive device for electric power system, the utility model discloses a set up a plurality of instruments and place position (3) on box body (10), thenset up pressure switch B (2) respectively in the position is placed to every instrument, when the user has used the instrument not put back to the normal position, pressure switch B unable being forced down then on the position is placed to the instrument that corresponds with it, and when the operator closes upper cover plate (8), the upper cover plate forces down pressure switch A (1), and at this moment, the pilot lamp lights, points out the operator to have the instrument not have the collection completely, just do not have placement tool in the position if originally the instrument is placed, this moment the operator press switch (12) can, effectually avoided losing of instrument etc. The utility model has the characteristics of simple structure, convenient to use etc, not only be fit for using in the outdoo