PMC180N-S 3 Phase Digital Power Meter

  a. Full power parameter measurement, electric energy measurement, up to 31 times voltage and current harmonic analysis;
  b. Phase sequence monitoring, phase angle difference, sequence component, unbalance, load properties and other parameters measurement;
  c. Measurement of current K coefficient, voltage crest coefficient ( CF ) and other parameters;
  d. Online monitoring of electrical parameter over-limit alarm;
  e. No display network table, the transmitter output can be configured;
  f. Support MODBUS-RTU standard protocol, RS485 communication;
  g. The product can be connected with an open current transformer to realize the construction and transformation of uninterrupted power supply.
2. Product overview

      The PMC180N-S Three-phase Digital Power Meter is a multi-function power parameter measuring instrument without display operation panel, which can replace a variety of instruments, transformers and other components, and can be installed in different positions in the power distribution system.

      The instrument has RS-485 communication interface, optional wireless communication module, can be integrated into a variety of power monitoring systems, and data collection can be conveniently carried out through the supporting management software or other industrial configuration software.

      This instrument is a true rms-based measuring instrument that can accurately measure highly nonlinear loads. Advanced grid frequency synchronous sampling technology enables it to accurately measure a variety of power parameters, including voltage / current rms, frequency, active power, reactive power, apparent power, power factor, input / output active energy, total active energy, Input / output reactive power, total reactive power, apparent power, voltage total harmonic distortion (THD) , 1~31 voltage harmonics, current total harmonic distortion (THD) and 1~31 current harmonics, etc. . All measurements, maximum and minimum values, and demand measurements can be viewed remotely using the software.

             a.Industrial distribution automation system          b.Energy efficiency management system
             c.Substation automation system                            d. Electrical engineering of intelligent building
             e.Power plant auxiliary power system                     f.High and low voltage switchgear

Installation

PMC180N 3-phase digital power meter (no indicator) use 35mm DIN rail  mounting or use M4 screws.

Fig. (1) Frame size (Unit:mm) 

System wiring connection patterns

    The power parameter meter can measure directly when the voltage less than or equal to 264V (phase) / 456V (line) and does not need to connect an external PT, otherwise it need to connect via an external PT. The power parameter meter support a variety wiring of measurement modes and as following use the graph of the method (Fig. 2..... Fig.7) to process explanation separately.

                                   
                Fig. (2) 3 phase/4 line wiring system,No PT,3CT         Fig. (3) 3 phase/4 line wiring system,3PT,3CT
                            
              Fig. (4)  3 phase/3 line wiring system,No PT,3CT           Fig. (5) 3 phase/3 line wiring system,No PT,2CT

                              
                  Fig. (6) 3 phase/3 line wiring system,2PT,3CT              Fig. (7) 3 phase/3 line wiring system,2PT,2CT 

Note: The fuse in the above diagrams is recommended at the rated current 250 mA.                                   

* Note: DI and AI/AO ports are multiplexed. If DI is selected, AI/AO cannot be selected; if AI/AO is selected for A1 port, DI cannot be selected.

Example: The ordering model is: PMC180N-S-3-1-1-0
That is, PMC180N-S is rated to measure 220/380V , 5A ; the working power is 85~264 VAC/45-65Hz ; it is equipped with 1 switch input (DI) ; there is no AI/AO .