Daily publications on electrical design, engineering standards, load calculations, protections and much more. Built by engineers, for engineers.
Forensic technical analysis of floating neutral in three-phase systems, displacement formulas, and 400V overvoltage prevention.
Technical analysis of poor terminal contact in circuit breakers, Joule heating effects, and compliance with IEC 60947 and NFPA 70B standards.
A poor contact at the terminal block of a miniature circuit breaker is not a minor inconvenience; it is a silent source of destructive thermal energy capable of
Why does a terminal block properly torqued during commissioning end up melting down after a few months of continuous operation? This represents one of the most
Technical analysis of ferroresonance in voltage transformers: physical causes, magnetic saturation modeling, and mitigation strategies.
We analyze Subsynchronous Resonance (SSR) instability in series-compensated generators, covering mechanical effects and advanced technical mitigation methods.
Technical analysis of Transient Recovery Voltage (TRV) and the influence of busbar capacitance on medium voltage circuit breaker failure.
An in-depth analysis of overvoltage transients in shunt reactors during switching and mitigation strategies per IEC 62271-110.
In-depth technical analysis of resonance and electromagnetic transients in medium voltage grids caused by RLC interactions.
Technical analysis of mechanical fatigue in busbars due to electrodynamic forces during short-circuits per IEC 62271.
Technical analysis of electrodynamic forces in busbar systems during short circuits per IEC 60865 and their impact on mechanical fatigue of insulators.
We analyze magnetostriction in transformer cores, its impact on mechanical fatigue, and diagnostic techniques according to IEEE C57.12.90.
The increasing reliance on long-distance underground XLPE cable runs introduces a critical operational challenge: capacitive charging current. In MV and HV syst
Forensic analysis of ferroresonance in shunt reactors due to capacitive coupling during single-phase switching operations in EHV systems.
Ferroresonance in current transformers (CTs) is the silent culprit behind unexplained nuisance tripping in differential protection schemes. When a CT enters dee
Technical analysis of circulating sheath current losses in single-core power cables per IEC 60287-1-1 and mitigation via Single-Point and Cross-Bonding.
Substation ground grid design is fundamentally about mitigating potential gradients, not merely achieving an arbitrary grounding resistance below 1 ohm. During
Engineering analysis of Corona Discharge in high-voltage transmission lines: ionization physics, active power losses, Peek's law, and mitigation.
We analyze the Transient Recovery Voltage (TRV) phenomenon in medium voltage circuit breakers per IEC 62271-100 and its impact on fault interruption.
Technical analysis of skin and proximity effects in MV cables. Impact on ampacity per IEC 60287 and mitigation of thermal losses in power systems.
We analyze the phenomenon of transient overvoltage amplification due to harmonic resonance, a critical risk to insulation integrity in medium voltage networks.
Technical analysis of thermal runaway in medium voltage cable joints (XLPE/EPR) due to mechanical relaxation of connectors and load cycling under IEC 60502-4.
Analysis of torsional fatigue and transient resonance in high-power synchronous motor shafts during starting under IEEE 1253 and API 684.
Forensic analysis of torque pulsation and torsional resonance in large VFD-fed motor shafts according to IEEE 1566 and IEC 60034-25.
Technical analysis of dielectric degradation and partial discharges in medium voltage motors caused by VFD reflected wave phenomenon.
Technical analysis of dielectric failure in medium voltage cable terminations due to poor electric field control, examining physics and IEEE 48/IEC 60502-4 standards.
Learn how to calculate transient short-circuit thermal ampacity in medium voltage cables according to IEC 60949 to prevent catastrophic failures.
Technical analysis of power transformer magnetizing inrush currents and harmonic resonance risks under IEEE C57.110 standard.
Comprehensive analysis of internal arc fault physics, backpressure dynamics, IEC 62271-200 IAC classification, 5 acceptance criteria, and active/passive mitigation strategies in MV switchgear.
Detailed physical and mathematical analysis of extreme overvoltage and magnetic saturation in current transformers (CT) with open-circuit secondary.
In-depth analysis of proximity effect and impedance imbalance in parallel conductors under NEC 310.10(H). Learn formulas, configurations, and mitigation.
In-depth engineering guide on VFD-induced bearing currents. Learn about EDM discharges, fluting damage, IEC 60034-25, IEEE 841, and technical mitigation methods.
Análisis de ferrorresonancia en redes de distribución y PTs según IEEE C57.105. Aprende física del núcleo saturable, modos resonantes y mitigación con Vexten.
Discover the physical mechanisms of cascading trips and selectivity collapse under IEEE 242 and NEC 240. Learn how to prevent system failures using Vexten engineering tools.
In-depth engineering guide to Recovery Voltage Method (RVM) and Polarization Depolarization Current (PDC) diagnostics for transformer insulation per IEEE C57.152.
Análisis técnico de armónicos triplen y sobrecalentamiento del conductor neutro según IEEE 519. Descubre estrategias de mitigación y dimensionamiento con Vexten.
In-depth engineering guide on the dynamic short-circuit withstand forces in power transformers per IEC 60076-5. Analysis of radial and axial electromagnetic forces.
Learn how to calculate short-circuit currents under IEC 60909 and select the correct switchgear breaking capacity (Icu vs Ics) in main distribution boards.
Analyze the physical mechanisms of non-linear ferroresonance in medium-voltage PTs and discover the calculation methods for sizing damping resistors.
Technical analysis of medium-voltage capacitor bank switching transients (back-to-back) and mitigation strategies per IEEE C37.012 and IEC 62271-100.
Learn how to calculate and thermally derate dry-type transformers serving non-linear loads according to IEEE C57.110 and IEC 61378-1 standards.
Learn how to calculate underground cable ampacity and thermal derating using IEC 60287 to prevent catastrophic thermal runaway in duct banks.