Scope of application 

F series installation of multi-rate watt-hour meter is a measurement, display, communication, energy pulse output and programmable smart meter function, with up to 2 sets of 128-inch segment 4 rates. Standard RS-485 communication interface, in line with Modbus-RTU communication protocol. Using blue backlit LCD display, the installation structure for the screen installation, can be widely used in substations, power distribution room, intelligent buildings and internal energy metering, management and assessment.

Structural features

○ time-accurate measurement of single-phase / three-phase AC power grid in the two-way active energy

○ With two sets of time table, four kinds of rates, 12 billing B-inch segment of the cost function

○ Monthly electricity is automatically saved on the specified date, can save 3 months of historical data

○ With active energy pulse output port

○ Design uses the most modern microprocessor and digital signal processing technology

○ The design uses a separate acquisition method for each measurement channel

○ High-precision clock, to ensure that the timing error is less than 0.5 seconds / day

○ Standard RS-485 communication interface, support Modbus-RTU protocol

○ Blue backlight LCD display

○ friendly user interface

○ has the convenience of installation, wiring is simple, easy maintenance, engineering, small, on-site programmable input parameters.

Product model

Instrument wiring diagram

Wiring instructions:

The input voltage should not be higher than the rated input voltage (100V or 380V). Otherwise, the PT should be considered. For the convenience of maintenance, the use of terminal block is recommended.

Standard rated input current of 5A or 1A, greater than 5A should use an external CT. If you are using other instruments connected to the CT, the wiring should be done in series. Before disconnecting the current input wiring of the product, always disconnect the CT-secondary or shorted secondary circuits first, and use the terminal block for maintenance purposes.

To ensure that the input voltage, current phase corresponds to the same phase sequence, in the same direction, otherwise there will be power and power and other numerical and symbolic errors.

Instrument can work in three-phase four-wire or three-phase three-wire mode, the user should select the appropriate use of field wiring. Generally, there is no three-phase three-wire system without center line, and three-phase four-wire system with center line. Note that the wiring in the field must be consistent with the wiring set in the table, otherwise the instrument measurement data is not correct.

Outline and mounting dimensions