An assembly for power connection and signal acquisition includes a power connection member and a patch panel. The power connection member includes a holder, a plurality of connection pieces disposed in the holder, and a protection shell mounted on the holder to protect the plurality of connection pieces. The patch panel includes a trough that defines a plurality of cable slots, a sampling cable received in each of the cable slots, and a protection cover mounted on the trough to protect the sampling cable received in the cable slot. A sampling terminal is disposed at an end of the sampling cable for electrically connecting the sampling cable with each of the connection pieces.