Essential Electrical Energy

Critical station power systems supply quality power to station equipment essential to health and safety, function, service or property deemed critical to the user.

Critical station power systems comprise a range of equipment from simple power conditioners to mitigate the effects of poor power quality, to uninterruptible power supplies (UPS) complete with energy storage batteries to bridge outages.

Critical station power systems consist of equipment modules and may include generators, storage batteries, rectifiers (AC-DC), DC-DC converters, inverters (DC-AC), AC conditioners, transfer switches and surge protectors.


Critical Station PowerWe are increasingly dependent on power quality sensitive services. Electrical power users are ever more concerned with power quality and the reliability of their critical operations. Recent power outages due to storms and aging infrastructure confirm these concerns.

Modern electronic equipment is also susceptible to voltage sags, swells, transients and distortion prevalent on many power circuits. Industrial sites experience more serious disturbances than commercial and residential sites, due to the negative impact of machinery and equipment on load power quality.

Prime power is the normally-supplied source of power. Prime power sources are either utility-supplied (grid-connected) or off-grid power sources. The latter are most often user-owned, cogeneration, engine generator, solar array, wind generator, biomass, biogas, micro-hydro or fuel cell based power sources.

Power Supply System A third category is a combination of both the above and is termed a grid-interactive, prime power source.

Critical Staticon power systems are installed between the prime power supply and critical station loads to ensure load power reliability by conditioning, converting and storing electrical energy.

Mechanical aspects of power equipment are as important as electrical load considerations since such systems are required to operate under adverse conditions such as utility power failures, major storms and earthquakes.

Floor space and loading, seismic bracing, vibration and noise control, room ventilation and air conditioning, and fire protection must be considered during system design.

  • Poor Power Quality due to:
    • Storms & earthquakes
    • Ageing infrastructure
    • Insufficient supply capacity
    • Operator error
    • Software glitches
    • Equipment breakdown
    • Industrial machinery
    • Non-linear loads
  • Power Quality Issues
    • Power outages
    • Voltage sags
    • Voltage swells
    • Transients
    • Noise
    • Distortion
  • Power Sources
    • Thermal combustion
    • Hydro-electric
    • Thermal-nuclear
    • Combined heat & power
    • Engine generator
    • Wind generator
    • Solar generator
    • Biomass combustion
    • Biogas combustion
    • Fuel cells