Energimeter an instrument that is most widely used to measure the electric energy consumption in a domestic or commercial electrical installations. Electrical energy is measured in units of kilo watt-hours (kWh) with energimeter. Therefore energimeter also commonly referred to as kWh-meter. Driving the system is composed of two electromagnetic energimeter of laminated silicon steel, magnetic shunt and series magnets as shown in Figure 7.12.
Electromagnetic M1 called magnetic and electromagnetic M2 series called shnut magnet. M1 Series magnets have magnetic coils consisting of several winding wires of larger diameter. This coil is referred to as the coil current or coil current (CC) and the coil is connected in series in the circuit.
Load current (load) flows through this coil. Shunt magnet M2 has a magnetic coil consisting of many turns of small diameter wires. This coil is referred to as the coil voltage or voltage coil (VC) and the voltage coil is connected in parallel with the voltage source (supply voltage).
Figure 7.12 Single-Phase Construction Energimeter
So kWh-meter also has 4 terminals and how these connections as watt meter. But differ only in the constant measuring. At the bottom of the core magnetic shunt mounted wires that connect briefly (cooper band) are referred to as power factor compensator (PFC). By adjusting the position PFC then flusi magnetic shunt can be made behind the source voltage by 90 o. Then the magnetic shunt is also equipped with shading cooper attached on both feet outside sunt magnet (FC1 and FC2), which serves as frictional compensation.
Figure 7.15 Typical kWh-meter 1 phase