The utility model relates to an integration power check gauge. Its characteristics are: including the singlechip, the output port of this singlechip is connected with the control end of 6 output relays respectively to 6 couples of output contact of these 6 output relays are connected with same public wiring end and 6 interchange outputs respectively, should still be connected with the output that moves the looks ware by public wiring end, should move the integrated power test terminal of input termination of looks ware, wherein the singlechip still is connected with man -machine interface. Through identification on probation, adopt the utility model discloses a behind the power check gauge, the problem of the unable check -up of the on -the -spot integration power of transformer substation has effectively been solved, in addition the utility model discloses the power unit of check gauge can also realize converting single phase power into three phase current. Shorten debug time greatly, practiced thrift manpower, material resources, improved work efficiency.