EM537 3 phase 4 wire meter sub-meter 380v watt meter

Summer/winter time switch permit/prohibition
Smart meter provide automatic summer/winter time switch accomplished at 02.00 on the last Sunday of March(forward 1 hours) and at 03:00 on the last Sunday of October(back 1 Hours).

Communication Function

With an infrared COM and a RS485 COM. Its physical layers are independent with each other.The meter can realize data acquisition, broadcast time setting, read, program and manage through hand-held terminals, data acquisition terminal, test equipments and computers. 

Alarm function

When the meter connect wire wrong example: current reverse, lost phase and reversed phase sequence , the meter will display      , the ALARM led will be on.

 U1  U2  U3    

  The missing letter means no voltage connection on that phase. The blinking letter means the voltage connection are not correct.

  I1   I2   I3    

 The missing letter means no current connection on that phase 

 -I1   -I2   -I3

means the current connection is reversed

Dimensions

 Wiring diagrams          

                       Direct connected meter                                                        Transformer connected meter

    single-phase model