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PowerVar MV

The PowerVar Medium Voltage is a designed, factory-assembled, and tested reactive compensation system with modular fixed or switched capacitor steps, which will automatically compensate an individual load or the network to maintain a pre-set level of power factor.

Flexibility in engineering and product design has been a trademark of Power Survey since its inception in 1948.

 

PowerVar MV is designed per your application requirements and includes:

  • Externally operated main air disconnects or load break switch
  • Mechanically operated switch
  • Oil or vacuum switches for manual or automatic capacitor step switching
  • Surge arrestors for vacuum switched harmonic filters
  • Key interlock systems
  • Transient inrush reactors
  • Control power transformers

Each PowerVar MV capacitor and filter bank undergoes full functional and electrical tests, which include:

  • NEMA and ANSI standards production test
  • Full high-pot, functional, and continuity testing
  • BIll and other special tests are available upon request

In addition to equipment, Power Survey can offer other products and services such as:

  • Power system harmonic analysis with detailed printed reports
  • Field power system measurements to verify harmonic analysis and results
  • Equipment supply on total turn-key basis
  • Voltages from 2400 V – 35,000 V
  • 11 gauge all welded enclosures
  • Galvanized steel outdoor enclosures
  • Reactive power ratings through 15 mvar
  • Harmonic tuned, de-tuned, or multi-tuned filter designs available
  • Blown fuse indication optional
  • Delivered fully assembled, tested, and ready for interconnection
  • Integral protection and control system
  • Top or bottom cable entry
  • Earthling switch
  • 60 kV BIll up to 4.8 kV
  • 95 kV BIll from 7.2 kV to 14.4 kV
  • Up to 12 automatic switched capacitor stages
  • Removable air filters without opening enclosure doors
  • Blocking timers to prevent re-closing of a capacitor stage in less than 200 seconds
  • Meets the following requirements:
    • ANSI
    • IEEE
    • NEC
    • NESC
    • CSA (when specified)
Enclosure:
  • 11 gauge, seam welded NEMA 1, 3R, or 4X ratings
  • Outdoor units consist of galvanized steel
  • C-Channel base is supplied for rigidity and skidding into place
  • ANSI gray-61 corrosion resistant enamel
  • Continuous ¼" x 2" ground bus
  • Heavy-duty 3-point latching mechanism with rollers
  • Stainless steel pin hinges and fastening hardware inside and out
  • Aluminum or galvanized steel nameplates and warning labels blind-riveted to enclosure
  • Forced air ventilation
Capacitors:
  • 95kV BIl rating, low loss, double bushing, all-film capacitors
  • Ungrounded Y- configuration switched in specified kvar increments
  • Stainless steel tank and mounting brackets with a light gray finish
  • Meet the latest applicable ANSI, IEEE, NEMA, and CSA standards
  • Non-PCB dielectric fluid
  • Internal discharge resistors
Protection and Protection Schemes:
  • 50kA current limiting fuses
  • Blown fuse detection and phase unbalance schemes
  • Y grounded with ground current transformer
  • *Y ungrounded with potential
  • Transformer in neutral to ground connection
  • *Double-Y connected with neutral current transformer
  • Control power transformer with both primary and secondary current limiting fuses
Options:
  • Externally operated main air disconnect or load interrupting switch
  • *Fused, non-fused, shunt-trip, rated for capacitive current interruption
  • Mechanically interlocked ground switch
  • Oil or vacuum switches for switching the capacitor kvar steps on and off
  • Surge arrestors for vacuum switched harmonic filter reactors
  • Kirk Key interlock systems
  • Transient inrush reactors
Power Factor Controller:

The capacitor banks are equipped with a digital power factor controller. The controller has a digital display that shows plant power factor, plant current level, and plant voltage level. Set point power factor is set by digital display.

Reactors:

Reactors are designed specifically for each application and include:

  • Standard iron core design
  • Air core reactors based on application requirements
  • Three phase reactors up to 4.16 kV
  • Single phase reactors at higher voltages
  • Reactors for de-tuned and harmonic filter banks are supplied with insulation levels and current ratings in accordance with specific harmonic loads
PowerVar MV Datasheetadobe_pdf_icon

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