In high energy consumption settings like industries, power plants, and power generation grids, the method of metering and billing are different from consumer ends. It requires not only accurate measurement but also monitoring of grid performance, efficiency analysis, overcurrent detection, fault detection, etc. Moreover, the high current flowing to these circuits poses potential risks when directly subjected to ordinary meters. Therefore, current transformers stand up to the task. They have an important role to play in the current measurement of safety and accuracy. In this blog, we will learn about how current transformer work, its impact on energy metering, and how it ensures accurate billing of energy consumption.
How Current Transformer Works
Before we get into the function of current transformers, think about why they are called transformers rather than meters since they perform the function of energy metering. This is because it steps down the high alternating current (AC) flowing through the circuit of heavy-duty power grids. Reducing the current to a lower magnitude safeguards the measurement unit from exposing itself to a high AC value. The manageable current is then measured accurately and safely. The secondary winding is connected to an ammeter or protection relay. Therefore, it performs the multiple functions of metering, protection, and monitoring simultaneously.
Impact on Energy Metering
The current transformers, also called current transducers, step down the high AC to a lower manageable value. Its impact on energy metering is highly valuable and multifaceted.
- Safety: The current reduction mechanism of these transformers ensures the current measurement is done safely, without hammering the ammeters and relay with threatening current. The high-voltage circuit and low-voltage meter are isolated by galvanic isolation.
- Heavy-Duty Applications: High AC is flown through heavy-duty applications like power substations, renewable energy units, industrial facilities, manufacturing plants, etc. These places require accurate monitoring of their electrical systems and energy metering.
- Circuit Control: The current monitoring function of these transformers allows for better circuit control. It detects current surges and sends the signal to step down.
- Precise Measurement: The deviations in measurement can levy heavy costs on billing. Ensuring precise metering helps generate accurate bills.
Final Thoughts
Current transformers are an essential feature in power circuits with high alternating current values. It keeps the metering safe from the impact of high current, helps monitor the grid performance, and maintains overall control of the high-voltage power flow. Current transformer manufacturers like Macro Plast Transformers support industrial high-voltage applications with a variety of current transformers with versatile configurations. Consult them in case you need a reliable current transformer suitable to your specific needs.
