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.

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.

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.

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: