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DC Power Supplies & Cathodic
Protection Rectifiers >
Rectifiers for Cathodic Protection
Air
Cooled Standard
Line
Cathodic
Protection
Rectifiers
by Universal Rectifier, Inc.

Heavy duty, pole mountable, air cooled
cathodic protection rectifiers

Farwest
“Standard Line” air 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 prove their superior design.
Conservative equipment ratings, controlled
manufacturing techniques, plus many extra features
ensure long and trouble-free operation.Typical cathodic
protection applications for the air cooled
rectifier line include pipelines, tank farms,
storage fields, and other non-hazardous locations
where continuous duty, DC power is required.
Air
cooled cathodic protection rectifier purchasing
specification
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Standard Rectifier Features
- Weatherproof to NEMA
3R
- Heavy duty 11-gauge
hot dip galvanized cabinet with Stainless Steel
Hardware
- Stainless Steel,
perforated screens
- Front and side
opening doors for easy maintenance
- Heavy duty,
draw-pull, stainless steel cabinet latch
- Slide-out equipment
racks, separate Transformer and Stack assemblies for
units over 1200 watts
- Heavy-duty
transformer with 15% over-design for reserve
capacity
- Minimum 18-step
voltage control link bar taps
- Quick-change,
heavy-duty knobs for changing tap link bars
- Minimum 5/16"
diameter, soldered tap changing studs
- 3/16” Grade XX,
Phenolic front panel
- Accessible front
panel Total precision shunt
- Magnetic AC Input
circuit breaker
- Magnetic AC
Secondary Breakers on all units less than 100 amps
(instead of fuses)
- Hoyt, separate
analog, 2-1/2” round, volt and amp meters
- Silicon diodes
protected by surge suppressors and current limiting
breakers < 100 Amps or fuses
- All electrical
connection hardware is Nickel Plated and double-nutted
or soldered
- Multi-strand,
high-temperature, insulated flexible wiring
- Terminal block for
AC input wires
- Primary tap change
panel for dual input voltages (Single Phase models
only)
- Safety shield panel
supplied on all units over 65 Volts DC
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Optional Rectifier Features
- Variety of AC
voltage inputs
- AC and/or DC
lightning protection
- Efficiency filter
chokes
- Communication
filters
- Meter switches
- Pedestal or base
mounting legs
- Power-on indicator
light
- DC failure warning
lights
- DC circuit breakers
or fuses
- 115 VAC convenience
outlet
- Powder-coated
cabinet finishes (hot dipped galvanize finish is
standard on most units)
- Optional cabinet
materials, such as aluminum or stainless steel
- Anodized finish for
aluminum cabinets
- Anodized finish with
clear coat for aluminum cabinets
- Additional voltage
control link bar taps
- Alternate output
control (constant current, constant voltage,
constant potential, and constant potential with IR
drop free feature)
- ETL or CSA
third-party certification
- Other options per
customer request
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Typical Cabinet Dimensions |

Case
Size |
Dimensions
(inches) |
| A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
| A |
14 |
12 |
20 |
3 |
15 |
20 |
16.25 |
3 |
7.5 |
6 |
9.25 |
5.5 |
| B |
17 |
15 |
24 |
3.5 |
18 |
23 |
32 |
3 |
9 |
8 |
12.5 |
8.5 |
| C |
22 |
21 |
24 |
3.5 |
24 |
28 |
32 |
3 |
9 |
10 |
17.5 |
14 |
| D |
28 |
22 |
23 |
3.5 |
25 |
34 |
32 |
3 |
9 |
12 |
23.5 |
15 |
| E |
34 |
28 |
27 |
5 |
33 |
44 |
35 |
3 |
9 |
10 |
29.5 |
20 |
Case
Size |
Single Phase |
Three Phase |
Maximum
DC Watts |
Shipping Weight |
Maximum
DC Watts |
Shipping Weight |
| A |
1200 |
135 lbs |
- |
- |
| B |
2800 |
185 lbs |
2000 |
225 lbs |
| C |
6000 |
300 lbs |
6500 |
385 lbs |
| D |
10,000 |
410 lbs |
12,000 |
625 lbs |
| E |
12,000 |
525 lbs |
18,000 |
750 lbs |

Air Cooled Rectifier Ordering Guide
Configure an 8-position model number like ASAI
20-20 ABCF
Positions from left to right are as follows:
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Position #1: Model |
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A
= Standard Line, Air cooled |
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Position #2: Type |
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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 (solid state)
V = Variac control |
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Position #3: Cooling |
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A
= Air Cooled |
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Position #4: Stack Type |
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I = Silicon (while other stack types are available, silicon
is recommended) |
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Position #5: DC Volts |
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List
Maximum DC Voltage Desired |
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Position
#6: DC Amps |
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List Maximum DC
Amperage Desired |
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Position
#7: AC Input |
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A =
115/230, single-phase
B = 230/460, single-phase
C = 230/460 three-phase |
D = 208,
three-phase
E = 115/480, single-phase
F = Specify |
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Position
#8: Special Features |
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A = Dual
input wired for low voltage
B = Dual input wired for high voltage
C = AC and DC arrestors
D = DC arrestor
E = AC arrestor
F = Filter choke
G = Communications filter
H = Meter switches
I = Base mounting
J = Power On indicator light
K = DC
failure warning light |
M = DC
breaker or fuse
R = 115 VAC convenience outlet
N = Powder coated cabinet (hot-dipped
galvanized standard on most models)
O = Aluminum or stainless steel cabinet
T = Anodized aluminum cabinet
U = Anodized aluminum with clear coat
P = Additional voltage control link bar taps
S = Multiple circuits (qty.)
Q = Other, specify |
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