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Dynamic Contact Resistance Testing During Circuit Breaker Closing
Dynamic Contact Resistance Testing During Circuit Breaker Closing Dynamic Resistance Measurement (DRM) during circuit breaker closing is a valuable diagnostic method for medium- and high-voltage circuit breakers. It helps technicians understand how electrical conduction is established during the closing operation, how the contacts behave at first touch, whether contact bounce occurs, and whether the final... Learn More
EuroSMC Expands the Quasar Relay Test Set Range: Quasar, Quasar-C, Quasar-C+ and Quasar-V
Product News | Secondary Injection Equipment EuroSMC Expands the Quasar Relay Test Set Range with Quasar-C, Quasar-C+ and Quasar-V EuroSMC introduces three new configurations to the Quasar platform: Quasar-C, Quasar-C+ and Quasar-V. Together with the existing Quasar model, the range now offers four modular relay test set configurations for protection relay testing, secondary injection, IEC... Learn More
SMC introduces PRIME Remote Control for automated micro-ohm testing
SMC introduces PRIME Remote Control for automated micro-ohm testing SMC launches PRIME Remote Control, a new software application developed to improve remote supervision, remote operation and test automation with compatible Prime-X00 micro-ohmmeters. The solution is designed for electrical maintenance, commissioning and testing teams working in substations, data centers, industrial facilities, power generation plants, offshore environments... Learn More
AI Data Center Electrical Reliability: Why Primary Injection, Secondary Injection and Circuit Breaker Testing Matter
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
Pick-Up and Drop-Out Testing of Protection Relays: What It Is, Why It Matters and How to Perform It
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
EuroSMC Global Partners Meeting in Madrid (2–6 February)
Five days of innovation, real testing, and global alignment for substation protection testing From **2 to 6 February**, EuroSMC hosted its Global Partners Meeting in **Madrid**, welcoming **around 40 attendees from more than 20 nationalities**. The week was built around a simple idea: in a field where reliability, safety and traceability matter, progress comes... Learn More
Primary Injection vs Secondary Injection Testing for ANSI 50/51 Overcurrent Relays (Substations)
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
Maritime protection systems on modern vessels: from theory to real-world testing
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
Understanding the Heat Run Test with Primary Current Injection
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
Directional Relays and Relay Testing: A Practical Guide with Secondary Injection
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