Dc Energy Meter – System Infra Solutions

Dc Energy Meter

DC energy Measurement is based on the principle of integration of DC power with time incorporating State of art microprocessor based design. DC power meters that measures the voltage, current, power and energy parameters. They are used for monitoring and controlling energy flow in DC systems. All SISPL models offers integration with external systems using MODBUS RTU protocol and an on-board RS485 serial communication port.

DC ENERGY METER Specification

  Measurement of parameter
S. No Parameter  Value/Requirement
1 DC Voltage 1 Channel
2 DC Current 4 Channel
3 DC Supply From Rectifier DC Voltage
Range of Measurement of parameter
S. No Parameter  Range
1 DC Voltage 20-60 V dc
2 DC Current 0-200A dc
Resolution of Measurement of parameter
S. No Parameter Resolution
1 DC Voltage 0.1V
2 DC Current 0.2A
 Measurement Input Method
S. No Parameter  Method
1 DC Voltage 2 pin direct input connection to rectifier output
2 DC Current 2Pin/channel, Voltage drop across shunt common negative with rectifier voltage
Measurement Accuracy
S. No Parameter  Accuracy
1 DC Voltage 1%FSR@ 25 degree C
2 DC Current 1%FSR@ 25 degree C
Parameter Measurement Method
S. No Parameter  Method
1 Input Differential Input with drift compensation current
2 Data Acquisition Multiplexed
Derived Parameter
S. No Parameter  Unit
1 Power Kw
2 Energy Kwh
Range of Derived Parameter
S. No Parameter  Range
1 Power 0-50Kw
2 Energy 0-9999999.9 Kwh
Display Resolution of  Derived Parameter
S. No Parameter Resolution
1 Power 0.1Kw
2 Energy 0.1Kwh
Accuracy of  Derived Parameter
S. No Parameter  Accuracy
1 Power 1%FSR@ 25 degree C
2 Energy 1%FSR@ 25 degree C
Display  Parameter
S. No Parameter  
1 Cumulative Energy Ampere, power & Energy per channel per screen
2 Power Ampere, power & Energy per channel per screen
3 Ampere Ampere, power & Energy per channel per screen
4 Voltage Common Rectifier Voltage
5 Daily Log Consumed Energy per day with date & Time of all four channel
5 Monthly Log Consumed Energy per month with date & Time of all four channel
Range of Editable  Parameter
S. No Parameter  Range
1 Shunt 1-99mV,1-200 amp
2 Slave Id 1-256
3 RTC Real time clock setting
Inbuilt protection for rugged telecom Application
S. No Parameter  Protection
1 Voltage Voltage rating & reverse polarity
2 Current Up to 60V
3 Serial port Transient above 5V and optical isolated
4 Editable Parameter Accessible only with password
5 Cumulative Energy Stored &  Increment in Memory
Termination Connector on DCEM
S. No Parameter  Protection
1 Measurement port & supply port Suitable for Voltage & Current
2 Serial port RS-485 3PIN Male Female
3 Voltage & Current rating 300V/10A
4 Connection marking Non Erasable ink with Channel Input marking, Voltage Marking with( +/-) & Serial Port RS-485 (A/B/GND) Marking
Internal Details of DCEM Critical Components/Software Inputs
S. No Parameter  Details
1 Front Screen Display 4×20 Alphanumeric LCD
2 Memory Serial EEPROM 256 K
3 Memory Life  20 Years
4 RTC( Real time Clock) High Accuracy with 60 deg C
5 Update of DCEM Memory Every 0.1 kwh Increment
6 Power supply Approx 2 watts
Environment & General Specifications
S. No Operating Condition  Details
1 Operation Temperature 0-60 degree C
2 Storage Temperature -20 to 80 degree C
3 Humidity 0-80%
4 Mounting Wall mountable
Details of Serial Rs-485 Communication Port
S.No Communication part  Details
1 Protocol 1 /2 Duplex Mod Bus protocol
2 Setting-1 Default Slave id 1, Function code 3, Baud rate 9600
3 Setting-2 1 stop bit, No parity, Start address 30000
4 Interface A, B, GND ( DX-, DX+, GND)
5 Isolation 4KV
6 Device/ Unit address 01-256
Data Type  & address  for data reading
S.No Data  Type
1 Energy Float
2 Amp Float
3 Voltage Float
4 Starting address 30000  Channel #1 Energy
5 Starting address 30002  Channel #1 Current
6 Starting address 30004  Channel #2 Energy
7 Starting address 30006  Channel #2 Current
8 Starting address 30008  Channel #3 Energy
9 Starting address 30010  Channel #3 Current
10 Starting address 30012  Channel #4 Energy
11 Starting address 30014  Channel #4 Current
12 Starting address 30016  Voltage

Picture of DC Energy Meter