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Surge Arrestor

Surface Pressure Distribution Map of the MOV Blocks Contacting Each Other

Surface Pressure Distribution Map of the MOV Blocks Contacting Each Other
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Fujifilm Prescale® pressure indicating sensor film is a diagnostic tool used for troubleshooting and maintenance. It reveals surface pressure distribution and magnitude between the MOV-blocks and the terminations in your high power arrestor application.

To ensure long arrestor lifetime, the MOV’s disks need to be sufficiently compressed together to withstand multiple lightening strikes.
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Why

  • Longevity of the arrestor is greatly improved when a lightening strikes current is homogeneously distributed across the entire surface area of each of the MOV contacts.
  • Total device failure can occur if there is insufficient pressure holding the stack together.
  • Current limited by high pressure "hot spots" reduces the protection level of the arrestor.
  • Using Fujifilm Prescale® ensures proper compression load level as well as distribution of that load (uniformity).
  • Fujifilm Prescale® sensor film applied during testing and analysis helps ensure a maximally performing protection device.

To ensure long arrestor lifetime, the MOVs disks need to be sufficiently compressed together to withstand multiple lightening strikes.



Pressure Film Type Code Alternative Code Pressure Range Order Now
Ultra Extreme Low 5LW UXL310 0.87 - 7.3 PSI (0.06 - 0.51 kg/cm2) Order Now
Extreme Low LLLLW / 4LW XL310 7.2 - 28 PSI (0.5 - 2 kg/cm2) Order Now
Ultra Low LLLW UL270 28 - 85 PSI (2 - 6 kg/cm2) Order Now
Super Low LLW SL270 70 - 350 PSI (5 - 25 kg/cm2) Order Now
Low LW L270 350 - 1,400 PSI (25 - 100 kg/cm2) Order Now
Medium MS M270 1,400 - 7,100 PSI (100 - 500 kg/cm2) Order Now
High HS H270 7,100 - 18,500 PSI (500 - 1,300 kg/cm2) Order Now
Super High HHS SH270 18,500 - 43,200 PSI (1,300 - 3,000 kg/cm2) Order Now

Physical Specifications
Operating Temperature 68°F - 95°F (20°C - 35°C) much higher for brief exposure
Humidity Range 20% to 90% RH
Gauge (Thickness) 4 - 20 mils
Spatial Resolution From 5 - 15 microns
Substrate Polyethylene Terephthalate (PET)
Accuracy ± 10% visual, ± 2%
Utilizing optional optical measurement systems
Shelf Life 2 Years