Single Phase Energy Meter
Connection Diagram, Working Principle and Features.


  1. Single phase energy meter.
  2. Connection Diagram or Circuit Diagram
  3. Working principle
  4. Features of SP energy meter
  5. Applications of SP energy meter.

1 - Single Phase Energy Meter:

Single phase energy meter a measuring instrument device which is used for measuring single phase electrical energy in residential societies of domestic or global. The electrical energy which is utilized by electrical load. It measures only utilized KWH power.

Single Phase Energy Meter: basic principles and features

2 - Connection Diagram or Circuit Diagram:

Single Phase Energy Meter: circuit diagram and Working principle.

3 - Working Principle:

Static energy meter works on digital integration operating principle. It has no moving parts and it is also known as digital meter. The meter output is directly proportional to the digital pulse.
Input single phase supply is connected to the input terminal and out terminal is connected to the load. A phase wire is connected to meter input terminal and input terminal is connected to the output terminal through current transformer. Neutral is connected to the directly.
The CT output wire is connected to the digital board. The digital board output is provided to the counter mechanism motor which move the counter as per load in kwh unit.

4 - Specification of SP Energy Meter:

  • Supply voltage : 240 V
  • Frequency : 50 Hz
  • Current : 0 to 40 Amp.
  • Class : 1.0
  • Meter Constant : 3200 pulses /unit
  • Display : Seven segment LCD display

5 - Applications of SP Energy Meter:

  • Residential houses
  • Commercial building
  • Residential societies
  • For single phase industrial equipments as motors, AC etc.

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