Paul Steciuk to Present IEEE Houston Seminar on Harmonic Analysis
VarStec News & Insights
September 18, 2026
Paul Steciuk, President and Co-Founder of VarStec Power Solutions, will present “Harmonic Analysis – Understanding the Fundamentals” for the IEEE Houston Section on October 13–14, 2026, at Bechtel Energy Building #3 in Houston. The two-night technical seminar will focus on practical harmonic analysis for electrical engineers and power system professionals.


VarStec Welcomes Alex Steciuk
VarStec News & Insights
September 16, 2026
We are pleased to welcome Alex Steciuk to VarStec Power Solutions. Alex joins the team to help develop customer relationships, identify new project opportunities, and support the continued growth of our medium-voltage reactive compensation and power quality business.

VarStec Engineering Brief
September 11, 2026
How to review capacitor switching device test reports beyond a stated C2 or BC2 designation, including device technology, applicable IEEE or IEC test standard, test sequence, preconditioning, number of switching operations, and whether the tested conditions reasonably match the intended capacitor-bank or harmonic-filter-bank application.


Reactor-Limited Fault TRV and Breaker Duty
VarStec Engineering Brief
September 1, 2026
How current-limiting reactors can increase transient recovery voltage duty on medium-voltage breakers, how surge capacitors and duty-adjusted breaker ratings can be evaluated, and how the accompanying spreadsheet design tool can be used to assess breaker TRV duty and mitigation options.

VarStec Engineering Brief
August 17, 2026
Practical guidance on split-wye neutral current protection for ungrounded double-wye capacitor banks, including sensitivity to internal unbalance and immunity to external system disturbances.

VarStec Engineering Brief
July 31, 2026
An engineering approach to high-altitude insulation coordination using surge arrester protection and system analysis to avoid unnecessary increases in equipment BIL, together with an accompanying spreadsheet design tool for evaluating altitude-adjusted insulation requirements, arrester protective margins, and equipment BIL suitability.

News Release
July 28, 2026
VarStec Power Solutions has launched its new website to provide engineers, consultants, and end users with information on its medium-voltage power quality solutions, engineering capabilities, and technical resources.

VarStec Engineering Brief + Spreadsheet Design Tool
July 10, 2026
A spreadsheet design tool for evaluating medium-voltage capacitor bank inrush current and switching-device duty, supported by an engineering brief covering back-to-back switching, transient limiting inductors, and point-on-wave switching.

Spreadsheet Design Tool + VarStec Engineering Brief
June 23, 2026
An engineering brief and accompanying spreadsheet design tool for preliminary evaluation of medium-voltage motor-starting performance. The brief explains the steady-state impedance methods used to estimate voltage sag, motor terminal voltage, and available starting torque, while the spreadsheet tool supports direct-on-line (DOL), reactor, transformer-reactor, capacitive, and reduced-voltage soft starter (RVSS) starting methods, both with and without the VarStec Capacitive MotorStart solution.

VarStec Engineering Brief
June 11, 2026
Why compact medium-voltage metal-enclosed capacitor banks and harmonic filter banks can benefit from direct fuse sensing rather than relying solely on indirect unbalance protection.

VarStec Engineering Brief + Design Tool
May 22, 2026
A comprehensive engineering brief on medium-voltage harmonic filter design, accompanied by a powerful spreadsheet design tool for evaluating filter performance, component ratings, tuning, and system harmonic behavior. The Filter Design Tool is an essential resource for engineers and others involved in harmonic filter design, application, specification, or purchasing, supporting Notch, High-Pass, C-High-Pass, and H-Type filter designs in both single-stage/single-tuned and multi-stage/multi-tuned configurations.

VarStec Engineering Brief
May 5, 2026
A practical look at neutral-voltage protection for single-wye ungrounded capacitor banks, including relay thresholds, PT saturation, and switching-related concerns.

VarStec Engineering Brief
April 20, 2026
Guidance on the distinction between capacitor-bank steps and physical stages and how stage weighting, voltage rise, load profile, switching duty, and economics affect sizing.

VarStec Engineering Brief
April 3, 2026
An engineering brief examining how capacitor-bank outrush current into nearby faults can impose severe making and close-and-latch duty on adjacent medium-voltage circuit breakers. The brief covers breaker capability, applicable capacitor-switching classifications, system conditions that drive outrush severity, and the use of outrush reactors to limit peak current and frequency. It is accompanied by a spreadsheet design tool for calculating expected outrush duty, comparing it with breaker capabilities, and evaluating reactor requirements and other mitigation options.