MPM100/MPM200, DEM100/DEM130，are all smart power meters, which can be used in the industrial, commercial, utility, transportation, data center, for monitoring electrical power data, such as voltage, current, active power, reactive power, energy, demand, etc. and switch or circuit-breaker ON/OFF status. All data can be display on the screen locally or update to SCADA system.

 

Matched with appropriate PT/VT (potential/voltage transformer) and CT (Current transformer), Multi-function power meters can be used on the medium-voltage switch-gear, ring-main unit, low-voltage cabinet, switch box or AC junction box. The panel-mounted or DIN rail design make it easy to install on site.

 

 

 

 

 

 

 

 

 

Most of the multi-function power meters are install on the primary equipment, which are sometimes locate in the distribution room, factory workshop, and building strong electrical wells. Meters work as secondary devices, collect the data by wire connecting to PTs and CTs which directly detect the voltage and current. Power, energy, frequency and other values can be calculated by meters.

 

Smart power meters send data to gateways via RS485 and MODBUS-RTU, and then gateways send data to SCADA via 2G/3G/4G or ethernet, the protocols are IEC104, MODBUS-TCP, etc.

 

 

 

These kinds of switch-gears and cabinets are always located in the distribution room.

 

In this application: always use MPM200. Measuring current, voltage, power, energy, detect switch ON/OFF status, some scenarios also need harmonic wave record.

 

MPM100 will connect to communication devices to transfer the data via RS485 in MODUBUS protocol, MPM200 not only support wire, but also support wireless communication, which will insert Sim card, and transfer data through cellular network in TCP/IP.

 

Both MPM200 and MPM100 has relay outputs, support remote switch.

 

 

 

These kinds of cabinets or boxes are always located in the factory workshop or building strong electrical wells.

 

For electrical monitoring system, always need measuring voltage, current, power, energy, and need to detect the switch ON/OFF status.

 

For energy effective management system, always need measuring energy, to statistical energy consumption in each department.

 

 

 

 

 

● Voltage—Ua, Ub, Uc, Uab, Ubc, Uca, 

● Voltage unbalance rate – UL-L unbal, UL-N unbal  

● Current—Ia, Ib, Ic, In 

● Current unbalance rate –I unbal 

● Active power – Pa, Pb, Pc, ∑P 

● Reactive power –Qa, Qb, Qc, ∑Q 

● Apparent power—Sa, Sb,Sc, ∑S 

● Power factor—PFa, PFb, PFc, ∑PF

● Frequency--F 

● Active energy—kWh 

● Reactive energy– kvarh  

● Apparent energy - kVAh 

● Dual source kWh record seperately grid & generator supply (Import & export kWh) 

● Demand and Max. record for I, P, Q, S 

● 31st harmonic, THD 

● 2 DI, One RS485,

 

 

● 100 pcs SOE log  

● Voltage/frequency deviation record 

● Voltage unbalance rate record 

● Voltage unbalance rate record 

● Maximum demand record 

● Real-time maximum value record 

● Historical multi-tariff energy record

 

 

 

● Project scale: 8 distribution room

● Using 86 pcs MPM200, and pcs 320 MPM100

● Customer benefit;

● Measuring the electrical values in real-time, set the threshold to alarm

● Detect the switch ON/OFF status, when status changed, update immediately.

 

5.2 Office building

 

Project scale: Building area: 12,000 m2

 

Using 120 pcs DEM130 and 650 pcs DEM100

 

Customer benefit:

 

● Know the energy consumption of each device/each floor/each department

● Calculate whether there is waste of electricity

● Read the data automatically, reduce the man-power

● Know how to use the electrical appliance in different time to fit to different rates