# Acrel

> Supported devices: Acrel ADL400

Source: https://voltmasters.io/en/docs/device-integrations/energy-meters/acrel/

Our EMS supports integration with energy meters from Acrel.

Acrel builds DIN-rail power measurement devices for commercial and industrial installations. The **ADL400** is a three-phase energy meter that communicates with our EMS over Modbus and provides the measurement data needed for monitoring and control.

### Supported devices

-   **ADL400**: three-phase DIN-rail energy meter with Modbus communication

> **Note**
>
> **Default slave ID**
> 
> The ADL400 leaves the factory on slave ID 1 and accepts 1 to 254. The installations we have seen so far are commissioned on **40**, so our EMS proposes 40 when you add the meter. Make sure the value matches the address configured on the meter itself.

> **Warning**
>
> Set the voltage and current transformer ratios on the meter before you add it. Our EMS reads the primary-side values, so the meter has to apply the PT and CT ratios itself. A meter left on the default ratios reports the wrong power and energy figures.

### What the meter reports

-   Voltage and current per phase
-   Active power per phase and total active, reactive and apparent power
-   Power factor per phase and total power factor
-   Grid frequency
-   Voltage imbalance and current imbalance
-   Cumulative imported and exported active energy

### EMS functionality

With the current integration, our EMS enables:

-   Accurate measurement of grid and sub-circuit energy flows
-   Real-time monitoring of power, energy and power quality data
-   Use of the meter as a reference point for control strategies such as peak shaving and capacity management

Additional functionality may be added over time as integration capabilities evolve.