HEXING HXE110 - Working Principle

User manual for single-phase meter
4
4 Working Principle
Micro Controler
Measuring
System
A
D
Calibration
Power Supply
Backup power Supply
LED Diode
Data process
Time of use
Load profile
Event record
RTC
Signal
processing
Non-volatile
Memory
EEPROM Memory
Optical Interface
LCD Display
Relay
RS-485 Interface
L1
N
I2
I1
Button
Input&Output
Inputs:
The main inputs to the meter are:
 Phase line L, neutral line N, current I1(main loop),neutral line I2(secondary loop)
For the power supply to the meter
For providing sampling signals
 Buttons
Switch displaying items
Control relays manually
 Communication interface of external data signal input
 Signal input
Output:
The meter has the following outputs:
 LCD liquid crystal display
 Pulse of meter testing
 Output signals from the communication interface
Measuring system:
Sample and calculate the input power grid signal to get related power grid information,
including following parameters:
 Active power
 Reactive power
 Voltage
 Current
 Frequency
 Power factor
Electric test pulse:
Active or Reactive power pulse is generated for accuracy test.
Power supply: