Exchange full electrical measurement appearance of multichannel

The utility model discloses an exchange full electrical measurement appearance of multichannel, including electric current acquisition circuit, voltage acquisition circuit and electric energy metering circuit, electric current acquisition circuit includes current transformer and signal sampling modulate circuit, carries out electric current signal acquisition to the signal sampling modulate circuit after through current transformer output signal, voltage acquisition circuit includes current -limiting treatment circuit, voltage transformer and the limit number collection modulate circuit that connects gradually, and alternating voltage carries out the voltage signal collection after importing the current -limiting circuit behind voltage transformer and limit number collection modulate circuit, the electric energy metering circuit is including measurement chip and singlechip, the measurement chip passes through SPI bus connection and is in the input of singlechip, still be connected with power switching circuit