Artificial intelligence is changing what a modern data center requires from its electrical infrastructure. As AI clusters push more power into every hall, the tolerance for hidden protection defects becomes much smaller. The International Energy Agency says data centers used around 415 TWh of electricity in 2024 and could reach about 945 TWh by 2030,... Learn More

In substation commissioning and maintenance, one of the most important tests is verifying the pick-up and drop-out values of protection relays. These parameters define exactly when a relay starts operating and when it resets, ensuring reliable protection system performance.   These tests are performed using relay test equipment, either through secondary injection or through primary... Learn More

If you work around substations long enough (generation, transmission, or distribution), you’ll notice something: most protection issues aren’t “mysteries”. They’re usually a chain problem—settings, wiring, CT polarity, logic, trip circuit, breaker mechanics, or documentation that didn’t reflect what was actually in service. In my day-to-day at EuroSMC, we manufacture primary injection, secondary injection, and measurement... Learn More

Introduction: from the single-line diagram to blackout… or reliability Electrification has turned the modern ship into a highly stressed microgrid.Integrated Power Systems (IPS) connect propulsion, hotel loads and auxiliaries to common main switchboards, often in closed-ring configurations with multiple generators feeding the same busbars. This architecture is extremely efficient and redundant, but only under one... Learn More

What a Heat Run (Temperature-Rise) Test Proves and Why It Matters A heat run test—also called a temperature-rise test—verifies that equipment runs within safe thermal limits under rated or near-rated load for an extended time. You circulate a controlled current through the full primary path and monitor temperature rise at hot-spot locations. This exposes loose... Learn More

What a Directional Relay Does and Why It Matters Directional relays are not just overcurrent devices with extra logic. They compare current from CTs with voltage from PTs to determine the fault direction. That single capability is decisive in parallel feeders, ring networks, and multi-infeed grids, where faults may be fed from both sides. I... Learn More

Introduction The IEC 61850 protocol is an international standard designed for substation automation systems (SAS). It enables seamless communication between Intelligent Electronic Devices (IEDs), regardless of the manufacturer, providing interoperability and efficiency. Today, IEC 61850 is widely used in medium- and high-voltage substations and is gaining importance in renewable energy facilities like wind and solar... Learn More

Once a recloser logic failed on a 33kV line during a storm. First trip was good. Second trip was good. Then it tried to reclose into a still-faulted line — and didn’t lock out. You know what happened next. Recloser that did not operate properly And on the photo above you can see a result... Learn More