Cathodic Protection Rectifiers, Oil Cooled, by Universal Rectifiers

Most Popular Oil-Cooled C.P. Rectifiers. Available with Many Options.
  • Description
    Rectifier cabinet Rectifier cabinet internals.
    Farwest oil cooled cathodic protection rectifiers, manufactured by Universal Rectifiers, Inc., are recognized as industry leading in quality, workmanship and service life. Many years of field-proven service have led to the superior design of these rectifiers. Conservative equipment ratings, controlled manufacturing techniques, plus many extra features ensure long and trouble-free operation.

    Typical cathodic protection applications for the oil cooled rectifier line include severe environmental conditions due to high humidity, dust, or other situations that would shorten the life of a standard air cooled rectifier.

    Explosion proof models are used for Class 1, Group D locations and comply with U.L. Standard 698. While similar to the standard oil cooled rectifiers, the explosion proof units are fitted with special hazardous area fittings to eliminate possibility of an ignition source.

    Oil cooled cathodic protection rectifier purchasing specification


  •  

    Standard Rectifier Features
    • Industry leading three-year limited warranty.
    • Heavy duty 11 gauge hot dipped galvanized cabinet with hinged top lid with top brace.
    • External cabinet fins for added strength and cooling.
    • Quick release, heavy duty stainless steel latches.
    • Separate instrument compartment with hinged door.
    • Separate lift-out component racks for the transformer and rectifier stack.
    • Heavy duty transformer with 15% overdesign for reserve capacity.
    • 18-step voltage control link bar taps.
    • Quick-change heavy duty knobs for changing tap link bars on units under 140 amps.
    • Magnetic AC circuit breaker.
    • Hoyt model 17-3 volt and amp meters.
    • Avalanche silicon diodes with a minimum 1,200 PIV.
    • Primarily forward polarity diodes.
    • Diode protection by surge suppressors plus breakers or fuses.
    • Electrical connections double-nutted or soldered.
    • Multi-strand, flexible wiring with TEW insulation rated at 105 degrees C and 600 volts.

    Optional Rectifier Features
    • A variety of AC voltage inputs.
    • AC and/or DC lightning protection.
    • Efficiency filter chokes.
    • Communication filters.
    • Meter switches.
    • DC circuit breakers or fuses.
    • Additional voltage control link bar taps.
    • Alternate output control (constant current, constant voltage, constant potential, and constant potential with IR drop free feature.
    • Other options per request of customer.


  • Typical Cabinet Dimensions

    Case
    Size
    Oil Gal
    Capacity
    Case Dimensions (inches) Knockout Detail
    A B C D E F A B C D
    MAO 20 18 15 24.5 24 26.75 17.75 3 1.75 4 4.25
    AO 55 30 18.25 34 24 39.75 22 3 1.75 4 4.25
    BO 110 36 21 46 24 46 25 3 3 4.5 4.25
    CO 170 48 21 52 24 58.25 25 3 3 4.5 4.25
    DO 213 60 21 52 24 70.25 25 3 3 4.5 4.25
    EO 300 72 21 52 24 82.25 25 3 3 4.5 4.25
    FO 465 84 30.5 52.5 24 93.5 34 3 3 4.5 4.25
    GO 600 84 30.5 64.5 24 93.5 34 3 3 4.5 5.25
     
    Cabinet Wattage & Weight

     
    Case
    Size
    Single Phase Three Phase
    Maximum
    DC Watts
    Shipping Weight Maximum
    DC Watts
    Shipping Weight
    MAO 500 200 lbs - -
    AO 501-1900 450 lbs 0-3600 518 lbs
    BO 1901-3400 594 lbs 3601-6400 660 lbs
    CO 3401-4250 731 lbs 6401-8000 860 lbs
    DO 4251-5300 935 lbs 8001-10000 1100 lbs
    EO 5301-6400 1020 lbs 10001-12000 1200 lbs
    FO 6401-8500 1200 lbs 12001-16000 1400 lbs
    GO 8502-10600 1400 lbs 16001-20000 1600 lbs

     

  •  

    Universal Rectifier Ordering Guide

    Configure an 8-position model number like OSOI 50-30 CBC
    Positions from left to right are as follows:

    Position #1: Model

    O = Standard Line, Oil cooled

    Position #2: Type

    S = Standard Rectifier (Manual taps)
    C = Constant Current (Reactor style)
    D = Constant Current (Solid state)
    E = Constant Voltage (Solid state)

    P = Constant potential (solid state)
    I = Constant potential IR free (solid state)
    M = Multiple Modes (Specify Modes Required)
    V = Variac control

    Position #3: Cooling

    O = Oil Cooled Standard

    X = Oil Cooled (Hazardous Location) Class 1, Div. 2

    Position #4: Stack Type

    I = Silicon (recommended)
    E = Selenium 

    Position #5: DC Volts

    List Maximum DC Voltage Desired

    Position #6: DC Amps

    List Maximum DC Amperage Desired

    Position #7: AC Input

    AA = 115/230, 1 phase set for 115 vac
    BA = 230/460, 1 phase set for 230 vac
    CA = 230/460, 3 phase set for 230 vac
    EA =
    115/460, 1 phase set for 115 vac
    G =
    115, 1 phase only
    H =
    230, 1 phase only

    AB = 115/230, 1 phase set for 230 vac
    BB =
    230/460, 1 phase set for 460 vac
    CB =
    230/460, 3 phase set for 460 vac
    EB =
    115/460, 1 phase set for 460 vac
    D
    = 208, 3 phase
    F = Specify

    Position #8: Special Features

    C = AC and DC arrestors
    D = DC arrestor
    E = AC arrestor
    F = Filter choke
    G = Communications filter
    H = Meter switches*
    J = Power On indicator light

    K = DC failure warning light
    M
    = DC breaker (> 100 amps) or fuse
    P = Additional voltage control link bar taps
    R = 115 VAC convenience outlet
    S = Multiple circuits (qty.)
    W = RMU Terminal Strip
    Z = Other, specify 

    *= For Standard Oil Cooler Rectifiers Only