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SES441 Substation
Maintenance Trailers

This versatile substation filtration trailer provides a convenient solution to manage dielectric fluid particulate, free water or dissolved water contamination. Vacuum and dry air capabilities are optional.

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SESCO engineers, designs, and manufactures mobile insulating oil filtration systems for small transformer, tap changer, and breaker installation and maintenance. These systems are targeted for less-demanding low-volume applications where dissolved gas contamination is not an issue. The SES 441 series uses single or multi-stage filtration to remove, particulate, free water, and small quantities of dissolved water if necessary. The SES441 filtration systems are commonly trailer mounted and can be combined with stand-alone vacuum (SES420) and dry breathing air packages (SES329) to increase the versatility of the maintenance trailer.  All systems can be custom built to customer specifications.

SES441 Highlights

Variable Speed 

10- 45 GPM/ 37-169 LPM

50 PSI Discharge Pressure

  Single & Three Phase Supply Power Options

  Remove Carbon, Free Water or Dissolved Water

Combine with Vacuum and or Dry Air Packages

 

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Processing Rate

  • Variable Speed 10 -45 GPM (38 -169 LPM)

Filtration Stages

  • Single
  • Duplex
  • Duplex w/ bypass

Filter Housing Styles

  • CUNO ZETA PLUS (4 High)
  • Single 7OD x 18"L
  • Three 7OD x 18"L 
  • Custom

Cartridge Types

  • Particulate
  • Particulate & Free Water
  • Dissolved Water
  • Fullers Earth
  • Activated Alumina

Flow Meters

  • Rate meter
  • Positive displacement totaling meter

Connections

  • 2” Quick Connect Cams

Suction Lift 

  • 12 FT @ 30 GPM

Discharge Pressure

  • 50 PSI

Power

  • 240V/1/60 
  • 240V/3/60 
  • 480V/3/60 

Additional Options

  • Live Electric Rewind Hose Reels
  • Manual Rewind Storage Hose Reels
  • Inlet / Discharge 4-Way Crossover Valve
  • Duplex w/ series or individual flow
  • Standard 718x3 Flat Gasket Cartridge Housing
  • Dissolved water monitor
  • Tethered remote pump control module
  • 480/3 or 240/3 voltage
  • Oil Storage Tanks
  • Generator
  • Inlet / Discharge 4-Way Crossover Valve
  • Duplex w/ series or individual flow
  • Dissolved water monitor
  • Tethered remote pump control module
  • Oil Storage Tanks
  • Generators

The SES441 filtration trailers are commonly combined with stand-alone vacuum (SES420) and dry breathing air packages (SES329) to increase the versatility of the maintenance trailer.  All systems can be custom built to customer specifications.

 

FILTRATION   +  DRY AIR  +   VACUUM

 

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The SES441 can be skid mounted for pickup truck mobility or cargo trailer mounted. 
Combination systems are cargo trailer mounted. 

 

  • Cargo Trailer Mounting
    All cargo trailers are specifically engineered to accommodate equipment load, weight distribution, to provide optimum towing conditions. Cargo trailer weight capacities (GVRW) range from 4,000 to 16,000 Lbs. SESCO will provide the cargo trailer size and weight capacity options available for the system being quoted.