Xinyu Rail Multi functional Power Meter

1、 Product Introduction:

Multi functional power meter with programmable measurement, display, RS485 digital communication, and power pulse

The multifunctional intelligent power meter with output can complete three tasksMeasurement of phase electrical parameters (three-phase voltage, three-phase current

Active power, reactive power, apparent power, power factor, frequency, etc.), harmonic measurement, power grid quality analysis

Analysis (Electricity)Voltage peak coefficient, current K coefficient, telephone waveform factor, voltage current imbalance, voltage current

Sequential measurement, four quadrant energy metering, data display, acquisition, and transmissionTransmission can be widely applied in substation automation

Distribution automation, intelligent buildings, internal energy measurement, management, and assessment within enterprises. Measurement accuracy level 0.5,

Realize LED presentField display and remote RS-485 digital interface communication, using standard MODBUS-RTU communication protocol

Discussion. The guide rail multifunctional power instrument has multiple expansion functions for optional selection:

1 relay output (can be used as local electrical parameter alarm or remote control output), 1 switch input, harmonic

Wave measurement function.

2、 Technical parameters:

3、 Installation and wiring:

3．1 Instrument size

long145mm, wide95mm, high50mmAdopting standards35mmInstallation of guide rails or screws.

Explanation: If there is any inconsistency with the wiring diagram of the instrument housing, please refer to the wiring diagram of the instrument housing for accuracy!

3. 2(1)Voltage input: The input voltage should not exceed the rated input voltage of the product（100Vperhaps400V）Otherwise, consideration should be given to usingPTFor ease of maintenance, it is recommended to use a wiring harness.

(2)Current input:11、13、15For the incoming end of the current transformer,*Represented as the same terminal of the current(Incoming end)The standard rated input current is5A, greater than5AThe situation should be handled externallyCTIf usedCTIf there are other instruments connected, the wiring should be in series. Before removing the current input connection of the product, be sure to disconnect it firstCTFor the convenience of maintenance, it is recommended to use a wiring harness for the primary circuit or short-circuit the secondary circuit.

(3)Ensure that the input voltage and current have consistent phase sequence and direction; denyThen there will be numbersValue and symbol errors(power and electric energy)!

(4)The instrument can work in three-phase four wire mode or three-phase three wire mode, and users should choose the corresponding wiring method according to the on-site usage situation. Generally, the three-phase three wire method is used when there is no centerline, and the three-phase four wire method is used when there is a centerline. The three-phase three wire method can only be installed2 individualCT（AandCThree phases and four wires need to be installedCTTwo wiring methods can be set inside the instrument, and the actual wiring method and the wiring method set inside the instrument must be consistent, otherwise the measurement data of the instrument will be incorrect.

(5) 21、22Switching output;31、39For switch input, where39The common terminal for switch input.4、5Active power pulse output.

4、 Programming operation:

4．1 Entering and exiting programming state

Enter programming mode:

Press and hold while measuring the display status“SET”Key agreement3In seconds, enter the password authentication page and use“◄”Enter password with the "▼" key and "▼" key (The password is fixed as1111)Press again“SET”Press the key to enter the programming status page. Attention: If you enter the password, press“SET”After pressing the key, exiting to the measurement display state indicates that the entered password is incorrect.

4．2 The use of buttons in programming operations

Function keysSETConfirm the setting value, enter the next setting or exit the setting.

Position selection key ◄Cycle to select the digit to be set, and the selected digit will flash.

Reduce key▼: Change the value of the selected digit(Numerical values from9arrive0cycle).

4．3 Parameter setting instructions

4．3．1 Parameter Setting Menu(Long press“SET”key3Enter in seconds)

Press and hold“SET”Key agreement3In seconds, enter the menu interface, press the "▼" key to enter the menu item value modification, and use it in the menu item value modification interface“◄”Use the combination of the key and "▼" to modify the value of the menu item. After changing to the desired value, press“SET”Press the key to modify the next menu item, and return to the measurement interface after completing the modification of the last menu item.

5、 Functional modules:

5.1 RS485 Communication

5.1.1 Physical Layer:

(1) RS485 communication interface, asynchronous half duplex mode.

(2) The communication baud rates of 1200, 2400, 4800, 9600, and 19200bps can be set, with a factory default value of 9600bps.

(3) Byte transfer format: N81 without checksum, 8 data bits, 1 stop bit; O81 odd check, 8 data bits, 1 stop bit; E81 even check, 8 data bits, 1 stop bit; N82 has no checksum, 8 data bits, and 2 stop bits.

5.3 Switching input:

The switch input module adopts a dry junction switch signal input method, and the instrument is equipped with a+15V working power supply inside, without the need for external input

offeringsElectricity can be used to monitor functions such as fault alarm nodes, on/off status, handcart position, capacitor compensation cabinet capacitor input status, etc,

The status information can be remotely transmitted to intelligent monitoring systems through communication interfaces, and can be easily implemented with remote control/alarm relay functions

Automatic opening and closing of the switch. The status of switch input monitoring can be set as a condition for relay output action, achieving some locking and mutual communication

Lock and other functions. The RS485 interface can read the status of the switch input interface through the 02H command.

6、 Contact information: