Calibration clamp used for being matched with injection current probes of different sizes

The utility model relates to a calibration clamp used for matching injection current probes of different sizes. The calibration clamp comprises a bottom plate. The left side plate and the right side plate are horizontally arranged on the upper end face of the bottom plate in a sliding mode in the left-right direction; the two ends of the supporting conductor are arranged on the left side plate and the right side plate respectively and used for installing the two N-type connectors on the outer side respectively, the middle of the supporting conductor is located between the left side plate and the right side plate, the outer side of the supporting conductor is sleeved with an insulating sleeve, the insulating sleeve is used for supporting a current probe, and the supporting conductor is of a telescopic structure; the top plate is used for fixing the left side plate and the right side plate, and the left side plate and the right side plate are connected with the top plate after sliding to preset positions; the c