What is Power Meters ?

What is it?

Power meters are devices that measure and monitor electrical energy usage in a building or facility. They can be used to track energy consumption, identify areas of high energy use, and optimize energy efficiency.

Why we use it?

We use power meters to improve energy efficiency, reduce costs, and comply with regulatory requirements related to energy usage reporting and monitoring.

How it works?

The meter typically contains current transformers and voltage sensors, which measure the amount of electrical current flowing through the system and the voltage level of the electrical supply. The device then calculates power usage by multiplying the current and voltage readings together.

Major brands that manufacture it

Some of the major brands that manufacture power meters include Schneider Electric, Siemens, Honeywell, Johnson Controls, and ABB.

Types

There are different types of power meters, including single-phase and three-phase models for measuring power usage in residential, commercial, and industrial settings. Some models may also feature additional functions, such as communication protocols or energy usage data logging.

How do we select it?

When selecting a power meter, consider factors such as measurement accuracy, voltage and current range, communication protocols, data storage capacity, and compatibility with your existing power distribution system. Also, make sure the meter meets local and national code requirements for electrical metering and reporting.

How to install it?

Power meters should be installed at the main electrical service entrance to the building or facility, downstream of the utility meter. They should be mounted securely on a wall or panel according to the manufacturer's recommendations, and any necessary wiring connections should be made to the main electrical panel or switchgear.

Wire connections required to receive the signals

The wire connections required to receive the signals from a power meter may vary depending on the specific device and building automation system. Typically, they will require a power supply connection and a communication signal wire that connects to the building automation system or controller. It's important to refer to the manufacturer's installation instructions for proper wiring connections.