CDE AeroPower™ Power Factor Correc-

tion Capacitors
SINGLE-PHASE AND THREE-PHASE
PFC CAPACITORS FOR
HIGH RELIABILITY APPLICATIONS

Intelligent Capacitor Solutions

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ power factor correction capacitors are constructed using high
quality materials and Lean Six Sigma manufacturing practices to provide
reliable performance and long life during continuous use.

CDE capacitors undergo 100% electrical and visual testing to further

ensure high level performance. If you have specialized needs, our flexible
manufacturing processes allow us to quickly provide custom configurations.

CONTENTS

General Information................................................................................................................................ 2

Construction.............................................................................................................................................. 4

Harmonic Distortion............................................................................................................................... 4

Cover Terminals......................................................................................................................................... 5

Specifications: AMP0, MMP0 and EPFC Capacitors...................................................................... 6

Safety Features........................................................................................................................................10

Mounting Orientation..........................................................................................................................10

Part Numbering System.......................................................................................................................10

Ratings Tables & Drawings: AMP0, MMP0 and EPFC Capacitors...........................................11

Equations for Reactive Compensation and Harmonic Distortion........................................22

PFC Capacitor Care, Troubleshooting and Common Issues....................................................24

CDE provides intelligent capacitor solutions.

CORNELL
CDE
DUBILIER
CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
ENERGIZING IDEAS
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

CDE manufactures both single-phase and three-phase power factor correction

capacitors up to 4,800 VAC. Our AeroPower brand PFC capacitors are designed for
high reliability applications, and have a life rating of over 200,000 hours. They are
designed to withstand harmonic currents, with special high harmonic versions
available.

Three types of standard reactive compensation capacitors are available:

• AMP0: Vacuum-impregnated metallized polypropylene, compact size. Available in

both oil-filled and dry configurations. (Made in USA.)

• MMP0: Vacuum-impregnated metallized polypropylene, rugged welded case.

(Made in USA.)

• EPFC: Euro-style vacuum-impregnated metallized polypropylene, round

aluminum studded case. (Made in China and India.)

Highlights
• Both European and North American styles available
• Long life
Applications • Over-current rating to 150% (200% for 50 Hz EPFC)
• Power Factor Correction Systems • Over-voltage rating to 120%
• Harmonic Filters • Includes discharge resistors
• Alternative Energy Power Systems • Large 325 KVAR capacitors available
• Single-phase and three-phase
• Induction Heating Capacitor
Alternatives • Loss of KVAR/fault detection
• Oil or epoxy filled versions available
Custom ratings and sizes are
available. Please contact CDE.

Specifications
KVAR Range: 0.5 to 325 KVAR
Capacitance Tolerance: 0 to +15%
AC Voltage Range: 240 VAC to 4,800 VAC; single-phase
or three-phase
Rated Frequency: 50 or 60 Hz
Capacitor Connection: 3-phase, internal delta connection standard;
wye available on request
Operating Life: 100,000–200,000+ hours
Total Losses: <0.5 Watts / KVAR at 60 Hertz, 25°C
Operating Temperature Range: -40°C to +46°C
Approval Certification: UL, cUL (≤600 VAC)

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 3
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Standard Voltage and KVAR Ratings at 60 Hertz*

LOW VOLTAGE AMP0 EPFC MMP0

240 VAC 0.5–10 0.5–10 20–30

480 VAC 0.5–25 2–40 25–100

600 VAC 1.0–25 10–40 25–100

750 VAC – – 25–150

MEDIUM VOLTAGE MMP0

900 VAC 25–150 Standard Voltage and KVAR Ratings at 50 Hertz

LOW VOLTAGE EPFC
1040 VAC 25–240

1200 VAC 25–240 400 VAC 2–50

2400 VAC 25–300 415 VAC 2–50

2770 VAC 25–300 440 VAC 2–50

4160 VAC 25–300 480 VAC 5–25

4800 VAC 25–325 525 VAC 5–25

*Please consult the factory for other voltages, frequencies and KVAR ratings.

Construction
All AeroPower capacitors are impregnated with either a dielectric fluid or an epoxy resin to give added insulation, excellent corona
protection and a moisture barrier. The dielectric fluid and the epoxy resin are considered a green (benign), environmentally
friendly material. MMP0 and EPFC capacitors are 100% leak tested. CDE products do not contain PCBs.

Harmonic Distortion
Harmonic distortion is the resulting non-sinusoidal current waveform generated by a non-linear load. The most common non-
linear load is a pulse rectifier, which is used in most switch mode power supplies, variable speed drives and uninterruptible
power supplies. The distorted current waveform generates a distorted source voltage due to the system (electrical power system)
impedance. A distorted waveform can be analyzed by decomposing it into a fundamental component (line frequency) and higher
frequency components of varying amplitude.

The effects of harmonic distortion on metallized film capacitors are (1) higher operating temperature because of higher I2R losses
and (2) higher voltage stress on the dielectric. Both of these factors will shorten the life of a capacitor dramatically.

All CDE power factor correction capacitors are designed to handle harmonic currents, however, CDE also offers capacitors that
are custom designed for systems with high harmonic distortion. By using our high-harmonic capacitors in your harmonic rich
application, you will have a more robust construction compared to using standard capacitors in the same application.

Cover Terminals
AMP0 and low voltage MMP0 cells are available in a three-terminal configuration, specified by KVAR rating (see individual
specifications). The internal schematics for these terminal configurations are shown in Figures 1A and 1B.

4 CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Figure 1A: AMP0 & Low Voltage MMP0 Figure 1B: EPFC

Internal Schematics for Low Voltage

Three-Terminal Capacitors

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 5
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Reactive Power Compensation Capacitor Specifications

MMP0 Medium
AMP0 Low Voltage MMP0 Low Voltage MMP0 Low Voltage EPFC Low Voltage EPFC Low Voltage
Voltage
(Three-phase and (Three-phase and (Three-phase and (Three-phase) (Three-phase)
(Three-phase and
single-phase) single-phase) single-phase) (up to 600 VAC) (up to 525 VAC)
single-phase)
(up to 600 VAC) (up to 600 VAC) (750 to 900 VAC) (60 Hz) (50 Hz)
(1040 to 4800 VAC)

Electrical Characteristics
Rated 240, 480 and 600 240, 480 and 600 750 and 900 VAC 1040 , 1200, 2400, 240, 480 and 600 400, 415, 440, 480
Voltages VAC VAC 2770, 4160 and VAC and 525 VAC
4800 VAC

Rated 60 Hertz 60 Hertz 60 Hertz 60 Hertz 60 Hertz 50 Hertz

Frequency
Capacitor Fluid impregnated Fluid impregnated Fluid impregnated Fluid impregnated Fluid impregnated Fluid impregnated
Type (Dry also available)

Dielectric Self-healing Self-healing Self-healing Self-healing Self-healing Self-healing

System metallized metallized metallized metallized metallized metallized
polypropylene film polypropylene film polypropylene film polypropylene film polypropylene film polypropylene film

Impregnation Non-PCB, non-toxic, Non-PCB, non-toxic, Non-PCB, non-toxic, Non-PCB,non-toxic, Non-PCB, non-toxic, Non-PCB,
Fluid biodegradable,Class biodegradable,Class biodegradable,Class biodegradable,Class biodegradable, Class biodegradable,
III combustible fluid III combustible fluid III combustible fluid III combustible fluid III combustible fluid natural oil

Capacitor Internal delta Internal delta Internal wye Internal delta or wye Internal delta Internal delta
Connecton, connection connection connection connection connection connection
3-phase
Capacitance -0% to +15% -0% to +15% -0% to +15% -0% to +15% -0% to +15% -5% to +10%
Tolerance

Discharge External resistors Internal resistors Internal resistors Internal resistors Internal resistors Internal resistors
Device reduce residual reduce residual reduce residual reduce residual reduce residual reduce residual
voltage to <50 V voltage to <50 V voltage to <50 V voltage to <50 V voltage to <50 V voltage to <50 V
with in 1 minute within 1 minute within 5 minutes within 5 minutes within 1 minute within 1 minute

Total <0.5 Watts / KVAR <0.5 Watts / KVAR <0.5 Watts / KVAR <0.5 Watts / KVAR <0.5 Watts / KVAR <0.5 Watts / KVAR
Losses at 60 Hertz, 25°C at 60 Hertz, 25°C at 60 Hertz, 25°C at 60 Hertz, 25°C at 60 Hertz, 25°C at 50 Hertz, 25°C
(without resistors) (without resistors)

Design 200,000 hours 200,000 hours 200,000 hours 200,000 hours 200,000 hours 100,000 hours
Service Life continuous duty continuous duty continuous duty continuous duty continuous duty (150,000highharmonic)

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Reactive Power Compensation Capacitor Specifications (cont.)

MMP0 Medium
AMP0 Low Voltage MMP0 Low Voltage MMP0 Low Voltage EPFC Low Voltage EPFC Low Voltage
Voltage
(Three-phase and (Three-phase and (Three-phase and (Three-phase) (Three-phase)
(Three-phase and
single-phase) single-phase) single-phase) (up to 600 VAC) (up to 525 VAC)
single-phase)
(up to 600 VAC) (up to 600 VAC) (750 to 900 VAC) (60 Hz) (50 Hz)
(1040 to 4800 VAC)

Over Current
Standard 135% * rated current 135% * rated current 135% * rated current 135% * rated 135% * rated current 150% * rated current
continuous,includes continuous,includes continuous,includes current continuous, continuous, includes continuous, includes
harmonic currents harmonic currents harmonic currents includes harmonic harmonic currents harmonic currents
currents
High 150% * rated current 150% * rated current 150% * rated current 150% * rated 150% * rated current 200% * rated current
Harmonic continuous,includes continuous,includes continuous,includes current continuous, continuous, includes continuous, includes
harmonic currents harmonic currents harmonic currents includes harmonic harmonic currents harmonic currents
currents

Over Voltage
Standard 110% * rated 110% * rated 110% * rated 110% * rated 110% * rated 110% * rated
voltage continuous voltage continuous voltage continuous voltage continuous voltage continuous (8 hrs. in every 24 hrs.)

High Harmonic 120% * rated 120% * rated 120% * rated 120% * rated 120% * rated 120% * rated
voltage continuous voltage continuous voltage continuous voltage continuous voltage continuous (5 minutes in
every 24 hours)

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 7
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Reactive Power Compensation Capacitor Specifications (cont.)

MMP0 Medium
AMP0 Low Voltage MMP0 Low Voltage MMP0 Low Voltage EPFC Low Voltage EPFC Low Voltage
Voltage
(Three-phase and (Three-phase and (Three-phase and (Three-phase) (Three-phase)
(Three-phase and
single-phase) single-phase) single-phase) (up to 600 VAC) (up to 525 VAC)
single-phase)
(up to 600 VAC) (up to 600 VAC) (750 to 900 VAC) (60 Hz) (50 Hz)
(1040 to 4800 VAC)

Mechanical Characteristics
Enclosure Type Drawn tin plated Heavygaugewelded Heavygaugewelded Heavygaugewelded Extruded aluminum Extruded aluminum
steelrectangularcan steel construction steel construction steel construction cylindrical can with cylindrical can with
M12 mounting stud M12 mounting stud
Finish None (standard) Light gray paint, Light gray paint, Light gray paint, None None
ANSI #61, UL ANSI #61, UL ANSI #61, UL
Painted (optional) approvedforoutdoor approvedforoutdoor approvedforoutdoor
usage usage usage
Mounting Optional bracketing Heavy gauge Heavy gauge Heavy gauge M12 mounting stud M12 mounting stud
is available brackets, mounting brackets, mounting brackets, mounting 10 NM max. torque 10 NM max. torque
holes 2 x ½ x 5/8" holes 2 x ½ x 5/8" holes 2 x ½ x 5/8"
slots slots slots
Terminals 3- and 2-terminal ½"-13 brass studs, ½"-13 brass studs, ½"-13 brass studs, M6 terminal 3-phase
cover: ¼"-20 male 160 in-lbs fastening 160 in-lbs fastening 160 in-lbs fastening 2-1/2 NM fastening terminal with
threaded stud, torque, 30 kV BIL torque, 30 kV BIL torque, 60 kV BIL torque, electrical shock
20 in-lbs fastening bushing bushing ceramic bushings M8 terminal protection
torque 4 NM fastening (finger proof )
torque

Loss of KVAR - Optional Optional - - -

feature

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Reactive Power Compensation Capacitor Specifications (cont.)

MMP0 Medium
AMP0 Low Voltage MMP0 Low Voltage MMP0 Low Voltage EPFC Low Voltage EPFC Low Voltage
Voltage
(Three-phase and (Three-phase and (Three-phase and (Three-phase) (Three-phase)
(Three-phase and
single-phase) single-phase) single-phase) (up to 600 VAC) (up to 525 VAC)
single-phase)
(up to 600 VAC) (up to 600 VAC) (750 to 900 VAC) (60 Hz) (50 Hz)
(1040 to 4800 VAC)

Environmental Characteristics
Operating -40°C to +46°C, -40°C to +46°C, -40°C to +46°C, 40°C to +46°C, -40°C to +46°C, -40°C to +55°C
Temperature -40°F to +115°F, -40°F to +115°F, -40°F to +115°F, -40°F to +115°F, -40°F to +115°F, -40°F to +131°F,
with natural with natural with natural with natural with natural with natural
convection cooling convection cooling convection cooling convection cooling convection cooling convection cooling
Storage -40°C to +85°C, -40°C to +85°C, -40°C to +85°C, -40°C to +85°C, -40°C to +85°C, -40°C to +85°C,
Temperature -40°F to +185°F -40°F to +185°F -40°F to +185°F -40°F to +185°F -40°F to +185°F -40°F to +185°F
Maximum Altitude 2000 meters above 2000 meters above 2000 meters above 2000 meters above 2000 meters above 4000 meters above
sea level sea level sea level sea level sea level sea level
Humidity 0 to 95% 0 to 95% 0 to 95% 0 to 95% 0 to 95% 0 to 95%
non-condensing non-condensing non-condensing non-condensing non-condensing non-condensing
Standards UL 810 UL 810 ANSI/IEEE 18 ANSI/IEEE 18 UL 810 IS 5553
UL C22.2 UL C22.2 NEMA CP-1 NEMA IEC 60831 IEC 60289
No. 190 Canadian No. 190 Canadian IEC 871-1
Standards Standards
ANSI/IEEE 18
NEMA CP-1

Certifications UL Recognized UL Recognized - - UL Recognized CE

CYTW2 CYTW2 CYTW2
cUL Recognized cUL Recognized cUL Recognized
CYTW8 CYTW8 CYTW8
RoHS Compliant
Safety Features Pressure interrupter Pressure interrupter Pressure interrupter Self-healing Pressure interrupter Pressure interrupter
technology
Self-healing Self-healing Self-healing Self-healing Self-healing
technology technology technology Internal discharge technology technology
resistors
External discharge Internal discharge Internal discharge Internal discharge Internal discharge
resistors resistors resistors resistors resistors

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 9
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Safety Features
Discharge resistors are placed internally on MMP0 and EPFC and externally on AMP0 capacitor cells. The resistors are a safety
feature that drains the voltage on the capacitor once the unit is taken offline to less than 50 volts in one minute or less for cells
rated up to 600 VAC or in 5 minutes or less for cells rated over 600 VAC. The resistors are sized for long life continuous operation at
maximum-rated temperature.

CDE low-voltage capacitor cells have UL and cUL recognized pressure-sensitive circuit interrupters. The circuit interrupter’s
purpose is to safely remove the capacitor from service at end-of-life or under heavy fault conditions and still maintain case
integrity. CDE low-voltage capacitor cells are listed for use with or without fuses at 10,000 amps available fault current (AFC rating).

Self-healing technology: in case of an overload, the self-healing properties of the low-loss metallized polypropylene will prevent
permanent dielectric breakdown.

Mounting Orientation
All CDE power factor correction capacitors can be mounted in a vertical position with the terminals facing up or horizontally. The
units should not be mounted upside down. For proper operation of the pressure interrupter, capacitors mounted in banks must
have enough space between them for expansion. In cases where brackets or mounting straps are used, there should only be
enough pressure on the unit to hold it in place.

Suggested Mounting Clearances

Side to Side Clearance above
Clearance Terminals
AMP0/EPFC 0.5" 1.0"
MMP0-LV 1.5" 1.0"
MMP0-MV 1.5" 3.0"

Part Numbering System AMP0 012 5 F

3 3 S
CDE’s part numbering system
is a descriptive part number
made up of several different VOLTAGE CODE 60 HZ NUMBER OF NUMBER OF
components such as KVAR, TYPE WHOLE KVAR
Standard Harmonics PHASES TERMINALS
D = 240 VAC W = 1200 VAC 1 = single- 2 = 2 terminals
voltage rating, etc. The AMP0 As indicated
F = 480 VAC J = 2400 VAC phase 3 = 3 terminals
descriptors are explained MMP0
H = 600 VAC K = 2770 VAC 3 = three-
EPFC
below using AMP00125F33S as KVAR IN Z = 750 VAC L = 4160 VAC phase
TENTHS O = 900 VAC M = 4800 VAC
a representative part number. FACTORY CODES
As indicated B = 1040 VAC
N = China
(Omit if n/a) High Harmonics S = USA
C = 480 VAC H = India
I = 600 VAC
VOLTAGE CODE 50 HZ
Standard Harmonics
E = 380 VAC P = 440 VAC
G = 400 VAC Q = 480 VAC
A = 415 VAC R = 525 VAC

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Type AMP0 Capacitor Cells, 240 to 600 VAC, Three-Phase and Single-Phase
Reactive Power Compensation Ratings

NOMINAL Ct NOMINAL CAN SIZE APPROX WEIGHT

KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) W x L x H (in) (lbs)

240 VAC, 60 Hz, 3-Phase, Delta Connection

2.5 AMP00025D33S 6 115.1 3.75 x 4.56 x 5 3.7

5 AMP0005D33S 12 230.3 3.75 x 4.56 x 6 4.5

6 AMP0006D33S 14.4 276.3 3.75 x 4.56 x 6.38 4.7

7.5 AMP00075D33S 18 345.4 3.75 x 4.56 x 7 5.2

10 AMP0010D33S 24.1 460.4 3.75 x 4.56 x 7 5.2

12.5 AMP00125D33S 30.1 575.6 3.75 x 4.56 x 9 6.7

480 VAC, 60 Hz, 3-Phase, Delta Connection

2.5 AMP00025F33S 3 28.8 3.75 x 4.56 x 5 3.7

5 AMP0005F33S 6 57.6 3.75 x 4.56 x 5 3.7

7.5 AMP00075F33S 9 86.3 3.75 x 4.56 x 6 4.5

10 AMP0010F33S 12 115.1 3.75 x 4.56 x 6.38 4.7

12.5 AMP00125F33S 15 143.9 3.75 x 4.56 x 6.38 4.7

15 AMP0015F33S 18 172.7 3.75 x 4.56 x 7 5.2

16.7 AMP00167F33S 20.1 191.9 3.75 x 4.56 x 7 5.2

17.5 AMP00175F33S 21 201.5 3.75 x 4.56 x 7 5.2

20 AMP0020F33S 24.1 230.3 3.75 x 4.56 x 7 5.2

22.5 AMP00225F33S 27.1 259 3.75 x 4.56 x 9 6.7

25 AMP0025F33S 30.1 287.8 3.75 x 4.56 x 9 6.7

480 VAC, High Harmonic Applications, 3-Phase, Delta Connection

7.5 AMP00075C33S 9 86.3 3.75 x 4.56 x 6.38 4.7

10 AMP0010C33S 12 115.1 3.75 x 4.56 x 6 4.5

12.5 AMP00125C33S 15 143.9 3.75 x 4.56 x 7 5.2

15 AMP0015C33S 18 172.7 3.75 x 4.56 x 10.5 7.8

16.7 AMP00167C33S 20.1 191.9 3.75 x 4.56 x 10.5 7.8

17.5 AMP00175C33S 21.1 201.5 3.75 x 4.56 x 10.5 7.8

20 AMP0020C33S 24.1 230.3 3.75 x 4.56 x 10.5 7.8

Custom ratings and sizes available. Please contact CDE.

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 11
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Type AMP0 Capacitor Cells, 240 to 600 VAC, Three-Phase and Single-Phase (cont.)
Reactive Power Compensation Ratings

NOMINAL Ct NOMINAL CAN SIZE APPROX WEIGHT

KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) W x L x H (in) (lbs)

600 VAC, 60 Hz, 3-Phase, Delta Connection

2.5 AMP00025H33S 2.4 18.4 3.75 x 4.56 x 5 3.7

5 AMP0005H33S 4.8 36.8 3.75 x 4.56 x 5 3.7

7.5 AMP00075H33S 7.2 55.3 3.75 x 4.56 x 6 4.5

10 AMP0010H33S 9.6 73.7 3.75 x 4.56 x 6 4.5

12.5 AMP00125H33S 12 92.1 3.75 x 4.56 x 6 4.5

15 AMP0015H33S 14.4 110.5 3.75 x 4.56 x 6 4.5

16.7 AMP00167H33S 16.1 123.1 3.75 x 4.56 x 6 4.5

17.5 AMP00175H33S 16.8 128.9 3.75 x 4.56 x 6 4.5

20 AMP0020H33S 19.2 147.4 3.75 x 4.56 x 7 5.2

22.5 AMP00225H33S 21.7 165.8 3.75 x 4.56 x 8.63 6.4

25 AMP0025H33S 24.1 184.2 3.75 x 4.56 x 9 6.7

600 VAC, High Harmonic Applications, 3-Phase, Delta Connection

10 AMP0010I33S 9.6 73.7 3.75 x 4.56 x 6 4.5

12.5 AMP00125I33S 12 92.1 3.75 x 4.56 x 8.25 6.2

15 AMP0015I33S 14.4 110.5 3.75 x 4.56 x 9 6.7

16.7 AMP00167I33S 16.1 123.1 3.75 x 4.56 x 9 6.7

17.5 AMP00175I33S 16.8 128.9 3.75 x 4.56 x 10.5 7.8

20 AMP0020I33S 19.2 147.4 3.75 x 4.56 x 10.5 7.8

Outline Drawings

AMP0: Suffix “33S”

¼-20 Stud

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Type MMP0 Capacitor Cells, 240 to 600 VAC, Three-Phase and Single-Phase
Reactive Power Compensation Ratings

NOMINAL Ct NOMINAL CAN SIZE APPROX WEIGHT

KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) W x L x H (in) (lbs)

240 VAC, 60 Hz, 3-Phase, Delta Connection

25 MMP0025D33 60.1 1151.3 3.75 x 13.5 x 13.5 31.3
30 MMP0030D33 72.2 1381.6 3.75 x 13.5 x 15.5 36.5
480 VAC, 60 Hz, 3-Phase, Delta Connection
25 MMP0025F33 30.1 287.8 3.75 x 13.5 x 8.5 21.4
30 MMP0030F33 36.1 345.4 3.75 x 13.5 x 9.5 23.5
35 MMP0035F33 42.1 403 3.75 x 13.5 x 11.5 28.1
40 MMP0040F33 48.1 460.5 3.75 x 13.5 x 11.5 28.3
50 MMP0050F33 60.1 575.6 3.75 x 13.5 x 13.5 32.3
60 MMP0060F33 72.2 690.8 3.75 x 13.5 x 15.5 36.4
75 MMP0075F33 90.2 863.5 3.75 x 13.5 x 18.5 43.1
80 MMP0080F33 96.2 921 3.75 x 13.5 x 19.5 44.6
90 MMP0090F33 108.3 1036.2 3.75 x 13.5 x 20.5 45.9
100 MMP0100F33 120.3 1151.3 3.75 x 13.5 x 24 55.3
480 VAC, High Harmonic Applications, 3-Phase, Delta Connection
25 MMP0025C33 30.1 287.8 3.75 x 13.5 x 8.5 21.4
50 MMP0050C33 60.1 575.6 3.75 x 13.5 x 13.5 32.3
75 MMP0075C33 90.2 863.5 3.75 x 13.5 x 18.5 43.1
100 MMP0100C33 120.3 1151.3 3.75 x 13.5 x 24 55.3
600 VAC, High Harmonic Applications, 3-Phase, Delta Connection
25 MMP0025I33 24.1 184.2 3.75 x 13.5 x 8.5 21.4
30 MMP0030I33 28.9 221 3.75 x 13.5 x 9.5 23.5
35 MMP0035I33 33.7 275.9 3.75 x 13.5 x 11.5 28.1
40 MMP0040I33 38.5 294.7 3.75 x 13.5 x 11.5 28.3
45 MMP0045I33 43.3 331.6 3.75 x 13.5 x 13.5 32.2
50 MMP0050I33 48.1 368.4 3.75 x 13.5 x 13.5 32.3
60 MMP0060I33 57.7 442.1 3.75 x 13.5 x 15.5 36.4
75 MMP0075I33 72.2 552.6 3.75 x 13.5 x 18.5 43.1
80 MMP0080I33 77 589.5 3.75 x 13.5 x 19.5 44.6
90 MMP0090I33 86.6 663.1 3.75 x 13.5 x 20.5 45.9
100 MMP0100I33 96.2 736.8 3.75 x 13.5 x 24 55.3

Custom ratings and sizes available. Please contact CDE.

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 13
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Type MMP0 Capacitor Cells, 750 VAC and 900 VAC, Three-Phase and Single-Phase
Reactive Power Compensation Ratings

NOMINAL Ct NOMINAL CAN SIZE APPROX WEIGHT

KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) W x L x H (in) (lbs)

750 VAC, 60 Hz, 3-Phase, “WYE” Connection

100 MMP0100Z33 77 1414.7 3.75 x 13.5 x 24 55.3
900 VAC, 60 Hz, 3-Phase, “WYE” Connection
100 MMP0100O33 64.2 982.4 3.75 x 13.5 x 20.5 49.6

Type MMP0 Capacitor Cells, 1040 VAC to 4800 VAC, Three-Phase and Single-Phase
Reactive Power Compensation Ratings

NOMINAL Ct NOMINAL CAN SIZE APPROX WEIGHT

KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) W x L x H (in) (lbs)

1040 VAC, 60 Hz, 3-Phase, Delta Connection

25 MMP0025B33 13.9 61.3 5.63 x 13.5 x 6 20.5
75 MMP0075B33 41.6 183.9 5.63 x 13.5 x 10 34.2
100 MMP0100B33 55.6 245.2 5.63 x 13.5 x 11.5 39.3
125 MMP0125B33 69.4 306.6 5.63 x 13.5 x 13 44.5
150 MMP0150B33 83.3 367.9 5.63 x 13.5 x 15 51.3
175 MMP0175B33 97.2 429.2 5.63 x 13.5 x 17.5 59.9
200 MMP0200B33 111 490.5 5.63 x 13.5 x 20 68.4
1200 VAC, 60 Hz, 3-Phase, Delta Connection
25 MMP0025W33 12 46.1 5.63 x 13.5 x 6 20.5
50 MMP0050W33 24.1 92.1 5.63 x 13.5 x 9 30.8
100 MMP0100W33 48.1 184.2 5.63 x 13.5 x 11.5 39.3
125 MMP0125W33 60.1 230.3 5.63 x 13.5 x 14 47.9
150 MMP0150W33 72.2 276.3 5.63 x 13.5 x 15 51.3
175 MMP0175W33 84.2 322.4 5.63 x 13.5 x 17.5 59.9
200 MMP0200W33 96.2 368.4 5.63 x 13.5 x 19 65
2400 VAC, 60 Hz, 3-Phase, Delta Connection
25 MMP0025J33 6 11.5 5.63 x 13.5 x 6 20.5
50 MMP0050J33 12 23 5.63 x 13.5 x 7.5 25.7
75 MMP0075J33 18 34.5 5.63 x 13.5 x 10 34.2
100 MMP0100J33 24.1 46.1 5.63 x 13.5 x 11.5 39.3
125 MMP0125J33 30.1 57.6 5.63 x 13.5 x 14 47.9
150 MMP0150J33 36.1 69.1 5.63 x 13.5 x 16 54.7
175 MMP0175J33 42.1 80.6 5.63 x 13.5 x 17.5 59.9
200 MMP0200J33 48.1 92.1 5.63 x 13.5 x 19 65

Custom ratings and sizes available. Please contact CDE.

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Type MMP0 Capacitor Cells, 1040 VAC to 4800 VAC, Three-Phase and Single-Phase (cont.)
Reactive Power Compensation Ratings

NOMINAL Ct NOMINAL CAN SIZE APPROX WEIGHT

KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) W x L x H (in) (lbs)

25 MMP0025K33 5.2 8.6 5.63 x 13.5 x 7.5 25.7

50 MMP0050K33 10.4 17.3 5.63 x 13.5 x 9 30.8
75 MMP0075K33 15.6 25.9 5.63 x 13.5 x 11.5 39.3
100 MMP0100K33 20.8 34.6 5.63 x 13.5 x 15 47
125 MMP0125K33 26.1 73.2 5.63 x 13.5 x 16 54.7
150 MMP0150K33 31.3 51.9 5.63 x 13.5 x 17.5 59.9
175 MMP0175K33 36.5 60.5 5.63 x 13.5 x 19 65
200 MMP0200K33 41.7 69.1 5.63 x 13.5 x 20 68.4
4160 VAC, 60 Hz, 3-Phase, Delta Connection
25 MMP0025L33 3.5 3.8 5.63 x 13.5 x 7.5 25.7
50 MMP0050L33 7 7.7 5.63 x 13.5 x 9 30.8
75 MMP0075L33 10.4 11.5 5.63 x 13.5 x 11.5 39.3
100 MMP0100L33 13.9 15.3 5.63 x 13.5 x 11.5 39.3
125 MMP0125L33 17.4 19.2 5.63 x 13.5 x 16 54.7
150 MMP0150L33 20.8 23 5.63 x 13.5 x 17.5 59.9
175 MMP0175L33 24.3 26.8 5.63 x 13.5 x 19 65
200 MMP0200L33 27.8 30.7 5.63 x 13.5 x 20 68.4
4800 VAC, 60 Hz, 3-Phase, Delta Connection
25 MMP0025M33 3 2.9 5.63 x 13.5 x 7.5 25.7
50 MMP0050M33 6 4.8 5.63 x 13.5 x 9 30.8
75 MMP0075M33 9 8.6 5.63 x 13.5 x 10 34.2
100 MMP0100M33 12 11.5 5.63 x 13.5 x 11.5 39.3
125 MMP0125M33 15 14.4 5.63 x 13.5 x 16 54.7
150 MMP0150M33 18 17.3 5.63 x 13.5 x 17.5 59.9
175 MMP0175M33 21.1 20.1 5.63 x 13.5 x 17.5 59.9
200 MMP0200M33 24.1 23 5.63 x 13.5 x 20 68.4

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 15
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Outline Drawings
MMP0: 240, 480, 600, 750 & 900 VAC MMP0: 1040 to 4800 VAC

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Type EPFC Capacitor Cells*

NOMINAL C1 NOMINAL DIMENSIONS APPROX WEIGHT
KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) D x H (mm) (kg)

240 VAC, 60 Hz, 3-Phase, Delta Connection

0.5 EPFC0005D33N 1.2 23 76 x 70 0.48
1 EPFC001D33N 2.4 46.1 76 x 76 0.5
2 EPFC002D33N 4.8 92.1 76 x 140 0.78
2.5 EPFC0025D33N 6 115.1 76 x 140 0.78
3 EPFC003D33N 7.2 138.2 76 x 140 0.78
4 EPFC004D33N 9.6 184.2 86 x 115 0.9
5 EPFC005D33N 12 230.3 86 x 170 1.2
6 EPFC006D33N 14.4 276.3 86 x 170 1.2
7.5 EPFC0075D33N 18 345.4 86 x 170 1.2
10 EPFC010D33N 24.1 460.4 86 x 200 1.35

480 VAC, 60 Hz, 3-Phase, Delta Connection

2 EPFC002F33N 2.4 23 86 x 70 0.6
7.5 EPFC0075F33N 9 86.3 86 x 170 1.15
10 EPFC010F33N 12 115.1 86 x 170 1.15
12.5 EPFC0125F33N 15 143.9 86 x 170 1.15
15 EPFC015F33N 18 172.7 86 x 200 1.35
16.7 EPFC0167F33N 20 191.9 86 x 215 1.45
17.5 EPFC0175F33N 21 201.8 86 x 245 1.6
20 EPFC020F33N 24 230.3 86 x 245 1.6
22.5 EPFC0225F33N 27 259 86 x 275 1.75
25 EPFC025F33N 30 287.8 86 x 275 1.75
30 EPFC030F33N 36 345.6 116 x 285 3.15
35 EPFC035F33N 42.1 403.2 116 x 315 3.45
40 EPFC040F33N 48.1 460.8 116 x 342 3.7
480 VAC, 60 Hz, High Harmonic Applications, 3-Phase, Delta Connection
12.5 EPFC0125C33N 15 143.9 86 x 245 1.6
15 EPFC015C33N 18 172.7 86 x 275 1.75
16.7 EPFC0167C33N 20 191.9 86 x 305 1.9
17.5 EPFC0175C33N 21 201.5 86 x 305 1.9
20 EPFC020C33N 24 230.3 86 x 335 2.05
600 VAC, 60 Hz, 3-Phase, Delta Connection
Custom ratings and sizes available. Please contact CDE.

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 17
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Type EPFC Capacitor Cells

NOMINAL C1 NOMINAL DIMENSIONS APPROX WEIGHT
KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) D x H (mm) (kg)

10 EPFC010H33N 9.6 73.7 86 x 170 1.15

12.5 EPFC0125H33N 12 92.1 86 x 170 1.15
15 EPFC015H33N 14.4 110.5 86 x 200 1.35
16.7 EPFC0167H33N 16 122.8 86 x 215 1.45
17.5 EPFC0175H33N 16.8 128.9 86 x 215 1.45
20 EPFC020H33N 19.2 147.4 86 x 245 1.6
22.5 EPFC0225H33N 21.6 165.8 86 x 275 1.75
25 EPFC025H33N 24 184.2 86 x 275 1.75
30 EPFC030H33N 28.8 219.9 116 x 285 2.95
35 EPFC035H33N 33.6 258 116 x 315 3.25
40 EPFC040H33N 38.4 294.9 116 x 342 3.7
600 VAC, 60 Hz, High Harmonic Applications, 3-Phase, Delta Connection
10 EPFC010I33N 9.6 73.7 86 x 200 1.35
12.5 EPFC0125I33N 12 92.1 86 x 245 1.6
15 EPFC015I33N 14.4 110.5 86 x 245 1.6
16.7 EPFC0167I33N 16 122.8 86 x 275 1.75
17.5 EPFC0175I33N 16.8 128.9 86 x 275 1.75
20 EPFC020I33N 19.2 147.4 86 x 305 1.9
25 EPFC025I33N 24.1 184.4 116 x 315 3.5

*
Made in China

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Outline Drawings
EPFC: 240 to 600 VAC

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 19
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

CDE 50 Hz EPFC*
NOMINAL Ct NOMINAL CAN SIZE APPROX WEIGHT
KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) D x H (mm) (kg)

400 VAC, 50 Hz, 3-Phase Delta Connection

2 EPFC002G33H 2.88 39.8 75 x 175 0.91
2.5 EPFC0025G33H 3.6 49.7 75 x 175 0.91
5 EPFC005G33H 7.2 99.5 75 x 175 0.91
7.5 EPFC0075G33H 10.8 149.2 75 x 210 1.08
10 EPFC010G33H 14.4 198.9 85 x 210 1.45
12.5 EPFC0125G33H 18 248.7 95 x 210 1.36
15 EPFC015G33H 21.6 298.4 95 x 210 1.36
20 EPFC020G33H 28.9 397.9 95 x 247 1.93
25 EPFC025G33H 36.1 497.4 116 x 247 2.81
30 EPFC030G33H 43.3 596.8 116 x 247 2.81
50 EPFC050G33H 72.2 994.7 116 x 353 3
415 VAC, 50 Hz, 3-Phase Delta Connection
2 EPFC002A33H 2.8 37 75 x 175 0.91
5 EPFC005A33H 7 92.4 75 x 175 0.91
7.5 EPFC0075A33H 10.4 138.6 75 x 210 1.08
10 EPFC010A33H 13.9 184.8 75 x 210 1.08
12.5 EPFC0125A33H 17.4 231 85 x 210 1.45
15 EPFC015A33H 20.9 277.2 95 x 210 1.36
20 EPFC020A33H 27.8 369.6 95 x 247 1.93
25 EPFC025A33H 34.8 462.1 116 x 247 2.81
30 EPFC030A33H 41.7 554.5 116 x 247 2.81
50 EPFC050A33H 69.6 924.1 116 x 353 3
440 VAC, 50 Hz, 3-Phase Delta Connection
2 EPFC002P33H 2.6 32.9 75 x 175 0.91
2.5 EPFC0025P33H 3.3 41.1 75 x 175 0.91
5 EPFC005P33H 6.6 82.2 75 x 175 0.91
7.5 EPFC0075P33H 9.8 123.3 75 x 175 0.91
10 EPFC010P33H 13.1 164.4 75 x 210 1.1
12.5 EPFC0125P33H 16.4 205.5 85 x 210 1.16
15 EPFC015P33H 19.7 246.6 95 x 210 1.36
20 EPFC020P33H 26.2 328.8 95 x 247 1.93
25 EPFC030P33H 32.8 411 116 x 210 2.4
30 EPFC030P33H 39.4 493.2 116 x 247 2.81
50 EPFC050P33H 65.6 822.1 116 x 353 3
480 VAC, 50 Hz, 3-Phase Delta Connection

Custom ratings and sizes available. Please contact CDE.

20 CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

NOMINAL Ct NOMINAL CAN SIZE APPROX WEIGHT

KVAR RATING CDE P/N
CURRENT (ARMS) CAPACITANCE (µF) D x H (mm) (kg)

5 EPFC005Q33H 6 69.1 75 x 175 0.94

7.5 EPFC0075Q33H 9 103.6 75 x 210 1.08
10 EPFC010Q33H 12 138.2 85 x 210 1.41
12.5 EPFC0125Q33H 15 172.7 95 x 210 1.36
15 EPFC015Q33H 18 207.2 95 x 247 1.93
20 EPFC020Q33H 24.1 276.3 95 x 247 1.93
25 EPFC025Q33H 30.1 345.4 116 x 247 2.81
525 VAC, 50 Hz, 3-Phase Delta Connection
5 EPFC005R33H 5.5 57.7 75 x 175 0.96
7.5 EPFC0075R33H 8.2 86.6 75 x 210 1.11
10 EPFC010R33H 11 115.5 95 x 210 1.36
12.5 EPFC0125R33H 13.8 144.4 95 x 247 1.93
15 EPFC015R33H 16.5 173.2 95 x 247 1.93
20 EPFC020R33H 22 231 116 x 247 2.81
25 EPFC025R33H 27.5 288.7 136 x 247 2.99

*
Made in India

Outline Drawings
EPFC: 400 to 525 VAC

Different terminal options available upon request.

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 21
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Equations for Power Factor Correction and Harmonic Distortion (Balanced Phase Loads)

Capacitors in Parallel

Capacitors in Series

22 CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 AeroPower™ Power Factor Correction Capacitors
SINGLE-PHASE AND THREE-PHASE PFC C APACITORS
FOR HIGH RELIABILIT Y APPLIC ATIONS

Legend

Connection Types

Delta Connection Wye Connection

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 23
 CDE PFC Capacitor Care, Troubleshooting
and Common Issues

Why Do You Need Power Factor Correction?

Power Factor Correction capacitors (PFCs) save power in an electric power system, and the savings can be substantial. PFCs do
this by helping filter the harmonics load in the power system, which allows more efficient usage of utility power and reduces
the amount of current lost. More useful power is transferred to the power system without requiring larger wiring or more robust
equipment.

If a power system is receiving “dirty” power (fluctuations, harmonic dissonance, etc.) the PFC capacitor can filter these out and the
capacitor will not fail. Use of PFC capacitors in industrial or manufacturing settings results in significant cost savings and longer
equipment life. The efficient use of power also means the utility grid can avoid building additional power generators, saving
capital cost, specifically in emerging markets.

How Does Power Factor Correction Work?

Electric power has two components:

1) Active power which produces work.

2) Reactive power, which is needed to generate the magnetic fields required for the operation of inductive electrical equipment,
but performs no useful work.

Active (or “real”) power is measured in KW (1000 Watts)

Reactive power is measured in KVAR (1000 Volt-Amperes Reactive)

Total (or “apparent”) power is measured in KVA (1000 Volt-Amperes)

The ratio of working power to total power is called power factor.

24 CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 CDE PFC Capacitor Care, Troubleshooting
and Common Issues

Power factor correction capacitors increase the power factor by supplying reactive
power when installed at or near inductive electrical equipment. Ideally, the
electrical load (motor, lights, etc.) should emulate a resistor, in which case, the
reactive power is zero. The goal is to have a perfect sinewave of the current match
the voltage.

Power Factor Correction Capacitors Save Money — So Keep Them Serviced!

Power factor correction capacitors lower electrical costs in two ways:

1) In many areas, the electrical rate includes a penalty charge when you have low power factor. Installing power factor
capacitors on a facility’s electrical distribution system makes it unnecessary for the utility to supply the reactive power
which would otherwise be required by inductive electrical equipment. The savings the utility realizes in reduced generation,
transmission, and distribution costs are passed onto the customer in the form of lower electrical bills.

2) The second source of savings realized by using power factor correction capacitors is in the form of increased KVA capacity
in your electrical distribution system. Installing capacitors to furnish the non-productive current requirements of the facility
makes it possible to increase the connected load as much as 20% without a corresponding increase in the size of the
transformers, conductors, and protective devices in the distribution system which services the load.

What Can Go Wrong?

Without regular monitoring and maintenance of your PFC system, the system may not perform optimally, or worse, it may be
headed for a breakdown. Issues can range from a non-ideal power factor to catastrophic failure of the entire PFC system. The
capacitors and rectors could be severely damaged or destroyed. This could result in a full power down of the facility which will put
your business lines down ($$$$). By maintaining the PFC system this can be avoided, and keep expensive replacement costs in
check.

Safety Is Always First

Before working on any power factor system, make certain it is disconnected from the main power source, and that the output of
the system is also disconnected. This ensures nothing is being fed backward through the system.

Also confirm the capacitors are discharged before disconnecting or adjusting any cabling or equipment. (PFC capacitors have
discharge resistors to prevent shock, but manually checking that the capacitors did indeed discharge is always good practice.)

In the event testing needs to be completed while the PFC system is active, use extreme caution. Check that current transformers
(CTs) are connected, as an open CT will create high voltage and could damage equipment as well as cause serious injury.

Where Should We Start?

Begin by performing a complete visual inspection of the system. This is a quick check to ensure the switches are working and the

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 25
 CDE PFC Capacitor Care, Troubleshooting
and Common Issues

capacitor banks are also working properly.

• L ook for discolored components, bulging and/or leaking capacitors and signs of heating and/or moisture. Bulging in a
capacitor is a telltale sign that it is at the end of its life.

•C
 heck reactors for discolored cabling or cases.

•C
 heck that fans are free of debris and in proper working order.

•C
 heck the PFC controller and manually step through connecting each capacitor bank.

•C
 heck the PFC % and ensure the phases are balanced.

Checking for Hot Spots

Thermal imaging is a great tool to evaluate an electrical system’s performance. Imaging will need to be completed with the system
running, so ensure you are following proper safety procedures first. Get your thermal imaging information where the wiring
connections are to the capacitors and reactors - this includes the terminals of the capacitors.

•C
 heck the capacitors for hot spots as well as the reactors. To do this, you will need to confirm the capacitors and reactors you
are monitoring are live. There are usually manual settings from the PFC control to connect the components.

•C
 heck specifically for temperature differences between phases of more than 7° C.

•C
 heck that the spacing between capacitors is appropriate – 2 cm. minimum is usually standard. If there is forced air in your
system, ensure the flow is appropriate and this is not causing heat transfer from one component to the next.

• I f cabling or terminal heating is abnormal, ensure terminals are tightened to the appropriate torque, and that cables are not
worn. Power down the system before adjusting.

Check Capacitance
Depending on the system, you will want to power down and make certain any three phase transformers are disconnected to
ensure the proper measurement of the capacitor. Also, check that the capacitors are discharged before measuring capacitance. A
charged capacitor can cause shock and/or damage to the equipment otherwise.

•C
 heck the voltage across the capacitor phase-to-phase as well as phase-to-neutral. The voltage across the capacitors should
be zero.

•C
 heck the capacitance per the configuration Y, delta, and neutral connected. All phases of the capacitor should read within a
single digit % of each other. A larger capacitance difference between phases is cause for further investigation.

• I t is also good practice to measure the capacitance at more than one frequency.

Check Current
Checking current will need to be completed with a live system, so exercise caution.

•U
 sing a current clamp CT, a best practice is to measure the current through the PFC system’s current transformer and calculate
the current on the line (this measurement can be used to validate the PFC panel).

26 CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000
 CDE PFC Capacitor Care, Troubleshooting
and Common Issues

• The CT ratio should be multiplied by the current measurement to calculate the current through the line/phase of the capacitor.
The current measured will be the RMS (Root Mean Square) current through the capacitor (this current includes harmonics).
Ensure the RMS current is acceptable for the capacitor rating and design.

Each current measurement on each phase should be within a single digit percentage of one another. Any phase imbalance will
require deeper investigation.

• I f the CT current is in question (measurement is high or low), measuring the line current for each phase into the capacitor
would be the next step. As the current is much higher in the line than on the PFC system’s current transformer, ensure the
current clamp and meters are configured so as to measure the higher current.

Check Voltage
A check of the voltage will also need to be completed with a live system (use caution).

•C
 heck the RMS voltage for each phase measuring from phase-to-phase and also phase-to-neutral.

•C
 heck that your voltage measurements comply with the capacitor design limits. Each phase should be within a single percent
of one another. Any phase imbalance will require further investigation.

Take a Deeper Dive — Harmonics and Transients

Checking voltage will also need to be completed with a live system (use caution). If the RMS measurements were within
specifications, a study of the current and voltage harmonics would be a good idea. This will help you to understand power
fluctuations due to transient loads from variable speed drives and any other nonlinear loads. Checking for systems tuned to
harmonics is also a best practice when troubleshooting a faulty PFC system.

In Conclusion, Continued, Regular Maintenance

Yearly visual inspection of the PFC system is a good practice to certify the system is in good working order. It can become
quite costly if routine maintenance is not completed as the cabling, capacitors and rectors may become damaged and require
replacement. By maintaining the PFC system this can be avoided the expensive cost of replacement can be kept in check.

CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000 27
About CDE
CDE is a leading provider of film capacitors for industrial, medical and specialized applications serving original equipment manufacturers (OEM) and distributors.
The company has world-class design, manufacturing and testing facilities in New Bedford, Massachusetts and global manufacturing facilities in China and India to
enable quick turn-around for shipping and delivery worldwide.

CDE capacitors are among the world’s most reliable components. Our extensive custom design and development capabilities coupled with broad, standardized
product offerings allow us to provide intelligent capacitor solutions that meet or exceed our customers’ application
requirements.

Our aim is to be the best and most sought after provider of capacitor solutions for specialty markets.

CDE Corp.
167 John Vertente Blvd.
New Bedford, MA 02745
Copyright 2017, CDE Corp. All rights reserved. Tel: +1-508-910-3500
CDE is a registered trademark and AeroPower is a trademark of CDE Corp. Fax: +1-508-995-3000
www.CDE.com
PF01704 Printed in the USA
CDE Cornell Dubilier • 167 John Vertente Blvd. • New Bedford, MA 02745 • Phone: (508)994-9661 • Fax: (508)995-3000