Summary:The single phase meter shunt is a power connection used to connect the single phase current of an el...
The single phase meter shunt is a power connection used to connect the single phase current of an electrical device to the power input of the electricity meter. This type of connection is most commonly used for domestic and residential applications because they are lightweight and compact in design.
The main advantage of this type of power connection is that they are able to supply a higher voltage than a standard two-wire receptacle would. This means that more current can flow into the electrical circuit if a power surge occurs. This allows for smoother voltages and is important for the safety of a wide range of electrical equipment.
A shunt is a small, resistive element that can be located in between the two copper frame terminals. It is inherently isolated from the environment, so magnetic tampering does not have an effect on the shunt or the current it senses.
Shunts can be used for many different purposes, but they are most often used to measure current. They are a great choice for energy metering and other power measurement applications.
There are a few types of shunts that can be used for this purpose, but they all share the same basic characteristics. These include a small footprint, a low voltage across the shunt, and a high accuracy.
This means that they can be used to measure a wide range of currents, and are suitable for both AC and DC measurements. They are a great option for power meters, wattmeters, energy meters, and current transformer calibration.
For this reason, they are very popular in the electric utility industry. They are also used in industrial applications, like solar inverters and other electrical equipment that need to be inspected.
One of the main reasons for this popularity is that they are less expensive than traditional shunts. They also do not have to be influenced by external ac or dc magnetic fields, so they are a great choice for shunt current sensing.
In addition to measuring the shunt, this design also measures the line and neutral current. This helps detect tampering and prevents the meter from recording a lower energy consumption than what is actually consumed by the user.
To measure the shunt, an analog front end is used to capture the voltage across the shunt resistor, which is proportional to the input current. The voltage is fed to the current ADC channel of the STPM3x metrology devices, which have a preamplification gain that ensures a current range up to 100A.
This is a very efficient design and is very cost effective to manufacture. The shunt assembly is made of Resistance alloy and is EB welded and comes with brass terminals.
Another benefit of this shunt is that it is very resistant to lightning strike. It passes a 3000A 10ms lightning strike test and is therefore extremely safe for use with power systems.
This shunt is designed to be highly sensitive to fluctuations in the output voltage of an electrical circuit and is therefore a good choice for power meters, wattmeters, and energy meters that require a very low frequency response.
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