Low-voltage line loss metering device

The invention discloses a low-voltage line loss metering device, which belongs to the technical field of power management and comprises a box body, a metering device body arranged in the box body, a plurality of pick-and-hang type current transformers, a plurality of voltage clamps and an operating rod, wherein the pick-and-hang type current transformer is provided with a mounting hole, a measuredline can be clamped in the mounting hole, the pick-and-hang type current transformer is provided with an opening, the opening can be opened and closed, and the peripheral side of the mounting hole can be communicated with the outside through the opening so as to take and place the measured line in the mounting hole; the voltage clamp can be opened and closed to clamp the measured line; the operating rod can be hooked on the pick-and-hang type current transformer and the voltage clamp so as to drive the pick-and-hang type current transformer and the voltage clamp to act, so that the pick-and-hang type current transfor