The utility model discloses an interim batch meter that total sword and CT unit are kept apart, the power distribution box comprises a box body, the box is equipped with the inlet wire room, the inlet wire room is equipped with the chamber door, the indoor sword that is equipped with of inlet wire melts the switch, the below that the sword melts the switch is equipped with the parallelly connected current transformer for the measurement with female row, the box articulates through hinge has the isolation internal door, the upper end that keeps apart the internal door is located the department that is qualified for the next round of competitions that the sword melts the switch, the bottom that keeps apart the internal door is located female bottom of arranging, it uses the lead sealing to seal to keep apart the side that opens and shuts of internal door, keep apart the observation window of internal door in including the door frame that the cold -rolled steel sheet made and locating the door frame. The utility model discloses installing the isolation internal door additional, when on -off operation is melted in the tool setting, avoiding touching the electrified mother danger of airing exhaust, the user opens inlet wire chamber door and can't contact the measurement and use current transformer, avoids stealing the electric wind danger, keeps apart the internal door simultaneously and uses the lead sealing to seal, only just opening the lead sealing to measuring when operating with current transformer, has guaranteed the security and the seriousness of lead sealing.