From transient-free switching in semiconductor fabs to high-altitude insulation coordination for remote mining sites, power quality challenges vary significantly by industry and application. VarStec’s System-Fit approach matches each solution to the facility’s actual operating conditions, electrical system characteristics, utility requirements, and performance objectives. We combine rigorous engineering analysis with custom-designed equipment to support reliable operation, grid compliance, and long-term system stability.
Medium-Voltage Power Quality Solutions by Industry
Rugged, application-specific systems that deliver reliable motor starting, harmonic control, and reactive compensation across extraction, transport, refining, and processing operations.
Reactive compensation and harmonic filtering engineered to help wind and solar projects meet utility interconnection requirements.
Reactive compensation, harmonic filtering, and motor starting solutions engineered for remote mining and mineral processing facilities operating on weak, constrained, or demanding electrical systems.
Transient-free switching and advanced harmonic mitigation designed to preserve uptime and protect sensitive servers, UPS systems, and cooling loads from power quality disturbances.
Custom-engineered harmonic filter solutions for hydrogen electrolysis and chlor-alkali production designed to survive corrosive and hazardous atmospheres.
Modern, metal-enclosed substation solutions that help utilities improve voltage control, reduce maintenance, and replace legacy open-air capacitor bank designs.
Custom-engineered power quality solutions that help semiconductor fabrication plants maintain stable voltage, control harmonics, and avoid process-disrupting electrical events.
System-fit reactive compensation and harmonic mitigation that improve capacity, stabilize voltage, and support demanding industrial loads without one-size-fits-all compromises.
Transient-free reactive compensation and harmonic filtering that keep hospitals, laboratories, and campus microgrids stable without disturbing sensitive equipment.
Heavy-duty filtering and flicker reduction engineered for the extreme electrical stress of electric arc furnaces and VFD-driven rolling mills.
High-cycle, high-reliability power quality solutions built for traction substations, transit networks, ports, and other infrastructure with constant load swings.
When the application does not fit a catalog, VarStec develops a custom system-fit solution matched to the project’s actual electrical behavior, site constraints, and operating goals.
The VarStec Engineering Advantage
VarStec does not offer one-size-fits-all catalog equipment. Every project is backed by more than 30 years of power engineering experience and a rigorous, data-driven analysis process.
System-Fit Engineering
Each solution is custom engineered around the facility’s actual load profile, utility requirements, physical layout, and operating objectives.
Application-Specific Design
Capacitor banks, harmonic filters, and switching schemes are selected to match the electrical behavior of the application rather than forcing a standard package onto a complex system.
Advanced Switching & Transient Control
Integration of ABB DS1 and VD4-CS/CS1 platforms for transient-free and restrike-free operation.
Power System & Switching Studies
Detailed Outrush, transient inrush, close-in fault, transient recovery voltage (TRV), and altitude derating studies help ensure equipment is properly applied to the power system.
Metal-Enclosed Reliability
Secure, tamper-resistant, and weather-protected designs that provide a superior alternative to legacy open-air stack-racks.