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Cathodic
Protection
Rectifiers
by Universal Rectifier, Inc.
Air Cooled
 Oil Immersed
Explosion Proof
Special Purpose
Universal Rectifiers, Inc.
 Universal's plant consists
of 7,000 square feet of assembly area plus an additional 1,000 square feet of office and
engineering space. Universal's personnel are experienced, skilled craftsmen, hand-picked
from the industry. Six of Universal's employees have a combined experienced of over 80
years and have been instrumental in the production of over 65,000 rectifiers.
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The Air Cooled Standard Line
The Universal Standard Line cathodic protection rectifiers
are recognized as the leader in quality and workmanship. Many years of field-proven
service have led to the design of Universal's rectifiers. Conservative ratings, controlled
manufacturing techniques, plus many extra features ensure long and trouble-free operation.
 Standard features:
- 11-gauge hot dipped galvanized case.
- Front & side opening doors.
- Heavy-duty draw-pull latch.
- Slide-out racks.
- Heavy-duty transformer with 15% overdesign for reserve
capacity.
- 18-step voltage control taps.
- Engraved Bakelite panel.
- Quick-change heavy duty knobs for changing tap link bars.
- Minimum 5/16" diameter soldered tap changing studs.
- Accessible shunt, plainly marked.
- Heinemann magnetic circuit breaker.
- Hoyt Model 17-3 meters
- Tri-amp high density selenium.
- Syntron avalanche silicon diodes protected by surge
suppressors and current limiting fuses.
- All electrical connections double nutted or soldered.
- Multi-strand high temperature extra flexible wire.
- Terminal block for AC input wires.
- Primary tap change panel for dual input voltages.
- Dead front panel supplied on all units over 60 Volts D.C.
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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 |
The Oil Cooled Line
The Universal oil-cooled rectifier is a heavy-duty, rugged
rectifier designed to operate under severe conditions. The cabinet is constructed of
minimum 11-gauge material reinforced with external fins for added strength and cooling.
All units are equipped with hinged lid, lid brace and heavy-duty draw pull latches as
standard features.
Explosion-proof models for Class 1, Group D environments
comply with UL Standard 698.
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Case
Size |
Oil
Gal
Capacity |
Case
Dimensions |
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 |
The Air Cooled SW Series
The Universal "SW" Series rectifier is an
alternative to the standard line. The "SW" rectifier features a lift-off design
case which permits unlimited accessibility for routine maintenance and inspection.
Simplified design reduces manufacturing costs, which provides an economical rectifier
ideally suited to most applications. Rectifier components are mounted on an 11-gauge
chassis panel for easy removal.
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Case
Size |
Dimensions
(inches) |
| A |
B |
C |
D |
E |
F |
G |
| UT |
8.75 |
12 |
19 |
17 |
11 |
16 |
20 |
| SW1 |
12 |
15 |
22 |
18.5 |
12 |
20 |
25 |
| SW2 |
14 |
17 |
25 |
22 |
14.5 |
22 |
28 |
| SW3 |
14 |
20 |
23 |
28 |
25.5 |
25 |
31 |
Special Purpose Rectifier Series
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Gas
Station Type
- 16 GA painted cabinet
- Wall mounting brackets
- 20 step output adjustment
- Silicon with surge suppressors
- Elapsed time meter
- AC/DC failure light
- Available in many DC ratings
- Many options available
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Constant
Current Multiple Output Circuit Type
- Constant current - maintains preset current
- Step-less, infinite adjustment of individual output circuits
- Very rugged due to current limiting feature. Can be operated
into a DC short circuit indefinitely
- Precise control of individual anodes and/or structure
current
- Eliminates anode resistor boxes and bond boxes
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PROLINE Series
- Solid state
- Constant current
- Multiple circuit
- Removable circuit boards
- Light weight
- Attractive appearance
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Well Casting
Plug-in Model
- Features easy removal of complete chassis for repair or
replacement
- AC/DC wires do not need to be disturbed - prevents the
possibility of reversed polarity to C.P. system
- Available in many DC output ratings
- Many options available
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Bridge Deck
& Concrete Reinforcement Bar Cathodic Protection Rectifiers
- Step-less, precise output adjustment
- Constant current, constant voltage models
- Patent pending IR drop-free models
- Multiple output circuits with individual control
- Many options available
- Any style enclosure available
- Custom designs to suit any requirement
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Model ES
The Model ES Rectifier is a versatile, compact,
lightweight, reliable unit for any low power requirements.
 Standard Features:
- Circuit breaker
- Ammeter
- 03 coarse and 6 fine taps
- Heavy gauge aluminum case
- Silicon rectifying elements
- Surge protection
- AC and DC lightning protection
- AC input terminal block
- Unique opening cabinet for total accessibility
- Only 13" high x 5" wide x 5.5" deep
- 120 VAC single phase input
- Standard sizes of 6V, 5A; 6V, 10A; 12V, 5A; 12V, 10A; 20V,
5A; 20V, 10A; 30V, 5A, 40 V, 5A
- Other ratings available up to 200 Watt maximum DC output
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Universal Rectifier Ordering Guide
Configure an 8-position model number like A S A E
20 20 A BCF.
Positions from left to right are as follows:
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| Position #1: Model |
A
= Standard line, Air cooled
O = Standard line, Oil immersed
S = Swing Out Series
U = Utility Series |
G
= Gas Station
E = ES
P = Proline |
| 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 (solid state)
V = Variac control |
| Position #3: Cooling |
A
= Air Cooled
O = Oil Immersed |
X
= Oil immersed, explosion-proof |
| Position #4: Stack Type |
E
= Selenium
I = Silicon |
C
= Selenium, Center Tap
S = Silicon, Center Tap |
| Position #5: DC Volts |
| List
Max. DC Volts Desired |
| Position
#6: DC Amps |
| List Max. DC
Amps Desired |
| Position
#7: AC Input |
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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#8: Special Features |
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 = Pilot light |
K = DC
failure light
M = DC fuse
R = 115 VAC convenience outlet
N = Painted (Galv. std. on most models)
O = Aluminum cabinet
T = Anodized aluminum cabinet
U = Anodized aluminum with clear coat
P = Other than standard taps
S = Multiple circuits (qty.)
Q = Other, specify |
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