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The signal input of multifunctional power meter adopts the calculation method of separate collection of each measurement channel, which ensures the complete consistency and symmetry in use.

Signal input instructions of power meter:

Voltage input: the input voltage shall not be higher than the rated input voltage of the product (100V or 400V), otherwise PT should be considered, and 1A fuse should be installed at the input voltage.

Current input: the standard rated input current is 5A. If it is greater than 5A, external CT should be used. If the CT used is connected with other instruments, the connection shall be connected in series. Before removing the current input connection of the product, it is necessary to disconnect the primary CT circuit or the short-connected secondary circuit first. It is recommended to use wiring arrangement instead of direct connection with CT, so as to facilitate disassembly and assembly.

To ensure that the input voltage, current, phase sequence and direction are consistent; Otherwise, numerical and symbolic errors will occur. (power and electrical energy)

The configuration of the instrument input network is determined according to the number of CT in the system. In the case of 3 CT, select the three-phase four-line three-component mode. The input network NET set up in the connection of the meter and the programming of the meter should be the same as the connection mode of the load measured, otherwise the voltage or power measured by the meter will be incorrect. In the three-phase three-wire, the voltage measurement and display is the line voltage; In the three-phase four-wire, the voltage measurement shows the phase voltage.