Tengcon NPM-502 modbus power meter

Tengcon NPM-502  modbus power meter     Product Description    Products Introduction of  modbus power meter   NPM502 Network power meter(hereinafter referred to as NPM502 instrument)which is specially developed General data acquisition module with a very high performance and stability for our users to Water supply automation control, the urban water treatment automatic control, thermal network pipeline automation control, the oil transfer station, hot water boiler, industrial steam boiler monitoring, water Wells, pumping station remote control.   NPM502 instrument can Indicate a field parameters to be Used as a separate module ,and also can extend as RS485 communication port.When more than 32 sets NPM502 instrument need to be used,one SCM communication management module need to be added, and collect the data ,then send to upper machine .SCM Communication management module support MODBUS and other standard protocols,and can be ordered by user’s requirements.  

Specification

Three Lines LED indicate accurately 3 phase voltage,3 phase current,active power,reactive power,frequency,  power factor,harmonic,3 phase electrical degrees,the inverter output and etc.

2 RS485, MODBUS RTU protocol, Scalable

FFT arithmetic, 1-15 harmonic calculation

Surface Mounting Technology, No external bus, high Electromagnetic Compatible(EMC)

Standard surface mounting,Outline Dimension:96 x 96 x 110(mm)hole size:92 x 92(mm)

Parameters

Analog input
Measuring method:	Three - meter method, Angle or star connection
Capacity:	one line
Measuring object:	Three phase voltage and line voltage, three phase current
Input Voltage :	0-400V(0-100V customizable) allow overload 50% for a long time, Ensure 150% linear range
Input Current:	0-5A  allow overload 120% for a long time,twice over current at a moment,Ensure 200% linear range
Sampling Speed:	Sampling 32 points per cyclic wave
Calculated Quantities:	UA,UB,UC(Or UAB,UAC,UBC),IA,IB,IC,PA,PB,PC,QA,QB,QC,P,Q,F, COS,3I0;
Data refresh rate:	40MS
The measuring ac frequency:	20~65HZ  ,Ensure precision during 45~55HZ,Within the scope of  other frequency error maybe have difference
Frequency measurement precision	±0.01HZ± 1 digit
Precision:	0.5% FS ± 2 digit  (not including harmonic,3I0,The negative sequence  current)

   

Display Range

Three phase voltage: < 24000V

Three Phase Current: < 12000A

Three-phase active power:  < 300000KW (The absolute value)

Three-phase reactive power:  < 300000KVar (The absolute value)

The power factor:  The actual value

Frequency:   Actual frequency, accurate to 0.01 Hz, range:35 - 65 Hz

The total active:  < 900000KW (The absolute value)

Total reactive: < 900000KVar (The absolute value)

The electricity: < 5000000000 KWh (when reach ,starting from 0 to count again)

   

Communication

Capacity:      2 port

Interface method: RS485, or RS232 (Optional)

Protocol :     MODBUS

   

Operation Condition
Mounting:	Standard surface mounting
Operation Temperature :	-25℃~55℃
Storage Temperature:	-40℃~70℃
Operating humidity:	<85% RH(20±5℃)
Atmospheric:	86~108Kpa
Size:	96×96×110mm
Power Supply:	AC 85~265V 50HZ~60HZ or DC 24V ± 30 %
Power Consumption:	< 5W
Working environment:	No explosions, no corrosive gas and conductive dust, no serious mold exists,  no violent  vibration and impact sourceIf you need to work in such environment,  please take the corresponding protective measures

       Application & Certification  (Tengcon network electric power meter)       Company Information   Beijing Tengcontrol Technology Limited Company   Rely on the computing hardware, software and network technique, Tengcon Technology devoted to manufacture industrial automation core products and systems. More than 30 per cent staffs are in Research & Development, so we gets strong ability on product R&D. Tengcon Technology has deep and wide experience on various signal acquisition, especially on electric signal acquisition, so that, our products are very robust on anti-interference and lightning protection.   Tengcon Technology advanced a Complete Distributed Network control system, in that the control s     ystem is constructed via absolutely new theory. It can be applied to construct the SCADA (Supervisory Control and Data Acquisition), PLC (Programmable Controller) and DCS (Distributed Control System).   We have manufactured more than 100 thousands products in 10 years, and all are used in various industrial plants and agricultural farms. With customer’s continuous testing and our technology improving, Tengcon Technology product are widely accepted by various users for its excellent network communication, architecture, anti-interference ability and wide temperature adaptation.