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[email protected]

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www.dem-it.com

  

POWER / ENERGY METER SINGLE PHASE

AC/DC TRMS - RS485 MODBUS 

 

 

QI-POWER-485

QI-PO

WER-485

PO

WER / ENER

GY ME

TER  SINGLE PHASE

AC/DC TRMS - RS485 M

ODB

U

 

 

QI-POWER-485

  Aug     2014

  

POWER SUPPLY  

 

   9...30 Vdc, Protection against 

polarity reversal and overtemperature.

  ABSORPTION      

    < 1,3 W

  MEASUREMENT   

  

Irms, Vrms, Watt, Var, Va, Vpk, Ipk, 

Frequency, Cosφ, Energy bidirectional, THD, min and 
MAX of each measure.

  TYPE OF MEASURE   

   

TRMS or DC

  RANGE   

 

 

Current: Up to 50 A AC/DC 

Voltage: up to 800 V AC or 1000V DC

  ACCURACY   

   

Voltage, Current, Active Power :  < 

0,5% F.S.

Frequency : 

+/- 0,1 Hz

Energy : 

+/- 1% of reading

Vpeak, I peak: 

+/- 5% f.s.

  OUTPUT  

  

RS485 Modbus RTU

  BAUDRATE 

  

from

 

1200...115200 Baud

  CREST FACTOR   

  1,8 (on current measurement)

  WORKING FREQUENCY   

   DC or 1...400 Hz

  SAMPLING RATE  

  11k Samples per Second

  INPUT IMPEDENCE 

 1 Mohm +/-1%

  STANDARDS CE  

   EN61000-6-4/2006 + A1 2011; 

EN64000-6-2/2005 ;  EN61010-1/2010

  OVERVOLTAGE CATEGORY 

 

 Cat III up to 600V ; Cat II 

up to 1000V

  ISOLATION   

  

3 kV on bare wire for Current measure,
4 kV for Voltage measure (reinforced insulation to 
power supply and serial output)

  PROTECTION INDEX   

   IP20

  TEMPERATURE COEFFICIENT   

  < 200 ppm/°C

  WORKING TEMPERATURE   

   -15...+65°C

  STORAGE TEMPERATURE  

  -40°C... +85°C

  HUMIDITY  

  10...90% not condensing

  ALTITUDE   

  Up to 2000 m s.l.m.

  DIMENSIONS

 

 46,1x 63x 26,4 mm (terminal excluded)

  TERMINALS  

  Removable terminals  3,5mm, n°1 4 

poles, n°2 2 poles

  WEIGHT 

   80 g. 

  FILLING  

   Epoxy Resins

  BOX MATERIAL  

   PBT, grey

  LED  

   N°1 yellow, Power on fixed, data                      

communication blinking

  DIP-SWITCH  

   2 poles

  MOUNTING  

  

Screw predisposition for vertical/horizontal mounting, 

DIN rail clips (included) for  vertical/horizontal 

mounting.

The 

QI-POWER-485

 is a  

Single-phase Power meter

 able to measure 

the 

TRMS AC/DC Current and Voltage. 

On the RS485 Modbus are 

available :  

Irms, Vrms, Watt, Var, Va, Vpk, Ipk, Frequency, 

Cosφ

Energy bidirectional and THD

. The device is fully 

configurable by 

RS485

,  DIN rail mounting,  

4kV galvanic isolation for Voltage input

.

The smallest Energy meter of the market !

Strengths:

•  TRMS Measure, THD available;

•  0,5 % Accuracy;

•  RS485 Modbus integrated;

•  Bidirectional Energy metering;

•   Din rail mounting in both side;

•  OEM’s design, low cost;

•  Fully configurable by free interface software 

FACILE QI-POWER-485

•  Bootloader for updating firmware

•  Available Measure register: MSW first, LSW 

first or hundredts

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