Overcurrents and energy metering

In a data center, energy measurement is essential to monitor performance, track usage, and allocate consumption. However, in environments where short-circuit levels can be particularly high—especially given the increasing power density in server rooms—another question must be asked: is the metering system truly suited to the constraints of the installation?

Our new technical note, dedicated to the effects of overloads and short circuits on energy metering, provides clear and practical insight into this issue. It shows why the choice of an energy meter cannot be limited to criteria such as compactness, certification, communication bus, and measurement accuracy. It must also take into account the meter’s ability to withstand short-circuit currents, as well as coordination with electrical protections to ensure the metering system can endure overcurrents.

Through practical case studies and comparisons between direct and indirect metering, this technical note highlights a key point: in certain configurations, a direct meter can become a vulnerable link, whereas an indirect metering architecture with an external current sensor makes it possible to secure energy measurement over the long term.

For data center operators, designers, and engineers, this document provides useful reference points to better assess risks, validate equipment coordination, and guide decisions toward more robust metering solutions. A must-read to better understand how to reconcile measurement accuracy, electrical safety, and service continuity in critical infrastructures.