MSB8R22270R - Cornell Dubilier Electronics, Inc.

ELECTROLYTIC

AC MOTOR START CAPACITORS

TYPE MS

The capacitor comes in all popular styles

with a variety of terminal configuration

choices. NA CC Motor Start Capacitors are

designed in accordance with EIA RS-463.

HIGH LIGHTS:

Capacitance: 21 - 1590 Mfd

Voltage: 110 Vac - 330 Vac

Operating Frequency: 50 - 60 Hz

Power Factor: 10% Max.

Ambient Temperature: -40!C +65!C

Case Sizes: 1-7/16" x 2-3/4" to

2-9/16" x 4-3/8"

FEATURES:

Moisture & Oil Resistant Plastic Case

Compact Size

Easily Mounted

Long Life and High Reliability

APPLICATIONS:

Motor Starting and other

Inter mittent AC applications

The MS motor start aluminum electrolytic

capacitor is used to provide the torque

necessary to start A C motors and can be

used in other intermittent AC applications.

Mallory Products for CDE

6325 Digital Way

Indianapolis, Indiana 46278

Phone: (317) 275-2285

Fax: (317) 275-2293

Internet: http://www.cornell-dubilier.com

Made In U.S.A.

Type MS Standard Terminal Layouts & Resistor Layout

2Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293

Resistors - Resistors are available at extra cost in

ratings specified. Layout as shown below is manda-

tory on case diameter 1-7/16" (case # 1-2-3) but other

positioning is possible on larger sizes. ( *Standard)

Rating

4700 Ohms 1 Watt 10% 1/4 x 3/4

15000 Ohms 1 Watt 10% 1/4 x 3/4

5600 Ohms 2 Watt 10% 5/16 x 3/4

*15000 Ohms 2 Watt 10% 5/16 x 3/4

33000 Ohms 2 Watt 10% 5/16 x 3/4

Size

(Max)Tolerance

11-

16 (1.4375) 2-3/4(2.750) 1/2(.500)

* 2 1-7/16 (1.4375) 3-3/8(3.375) 1/2(.500)

31-

16 (1.4375) 4-3/8(4.375) 1/2(.500)

* 4 1-13/16 (1.8125) 3-3/8(3.375) 5/8(.625)

* 5 1-13/16 (1.8125) 4-3/8(4.375) 5/8(.625)

62-

16 (2.0625) 3-3/8(3.375) 7/8(.875)

* 7 2-1/16 (2.0625) 4-3/8(4.375) 7/8(.875)

82-

16 (2.5625) 4-3/8(4.375) 7/8(.875)

Case

Code D

(ww

w0.015)

* NEMA Standard Sizes

(Ref.)

(+0.020, -0.030)

MS A 1 R 10 161 N

NACC Type Designation

Identifies the basic capacitor design;

P art Number Nomenclature

Performance

A = EIA Type 2

B = EIA Type 1

Case Code

(See standard ratings page)

Case Type

R = Recessed (Standard).

Voltage Rating

10 = 110 11 = 115 12 = 125 16 = 165

22 = 220 25 = 250 33 = 330

Minimum Capacitance

Expressed in microfarads .

Alwa ys 3 or 4 digits .

Resistor

N = No resistor (Standard)

R = With Resistor

Standard Par t Number

Dual Disconnect Terminals

W/Solder Lug Terminal

(DQCS)

(Case 4, 5, 6, 7 & 8 only)

Standard

Dual Disconnect Terminals

(DQC)

(All Cases)

Single Disconnect Terminals

(SQC)

(All Cases)

Solder Lug Terminals

(SL)

(All Cases)

.0625

(Ref)

.0625

(Ref)

.125

(Ref) C

.0625

(Ref)

.385 .285.160

.156

.140 R .106 Dia .094

.250

.070

.109

.406 .266 .130 .365 .281.154 .094

.250

.070

.109

.100 Dia .100 Dia

.365 .281.154 .094

.250

.100 Dia

.250.333

.1875 Dia

.095 Dia

MFD 110 Vac 115 Vac 125 Vac 165 Vac 220 V ac 250 Vac 330 Vac MFD 110 Vac 115 Vac 125 V ac 165 Vac 220 Vac 250 Vac 330 V ac

21-25 1 1 1 1 1 1 1 or 2

25-30 1 1 1 1 1 1 2

30-36 1 1 1 1 1 1 or 2 3 or 4

36-43 1 1 1 1 1 or 2 1 or 2 3 or 4

43-52 1 1 1 1 1 or 2 2,3 or 4 4 or 5

47-56 1 1 1 1 1 or 2 2,3 or 4 5

53-64 1 1 1 1 2,3 or 4 3 or 4 5

64-77 1 1 1 1 2,3 or 4 4 5

72-87 1 1 1 1 3 or 4 4 5

88-106 1 1 1 1 or 2 4 5 7

108-130 1 1 1 2 5 5 8

124-149 1 1 1 3 or 4 5 7

130-156 1 1 1 or 2 3 or 4 5 7 or 8

145-174 1 1 2 3 or 4 7 8

161-193 1 2 2 or 3 4 7 or 8 8

189-227 2 3 or 4 2 or 3 4 7 or 8 8

216-260 2 or 3 3 or 4 3 or 4 5 8 8

233-280 2 2 or 4 3 or 4 5 8

243-292 3 or 4 4 3 or 4 5 8

270-324 3 or 4 4 4 or 5 5 8

324-389 3 or 4 5 5 5

340-408 3 or 5 5 5 7

378-455 5 5 5 8

400-480 5 5 or 7 5 8

430-516 5 7 7

460-552 5 7 7

540-648 7 7 8

590-708 7 7 or 8

710-850 8 8

815-978 8

MSB Standard Ratings

Extra Performance (EIA Type 1)

MSA Standard Ratings

Normal Performance (EIA Type 2)

Ratings Charts

21-25 1 1 1 1 1 1 1 or 2

25-30 1 1 1 1 1 1 1 or 2

30-36 1 1 1 1 1 2 1,2,3 or 4

36-43 1 1 1 1 1 2 2 or 4

43-52 1 1 1 1 1 or 2 2 3 or 4

47-56 1 1 1 1 1 or 2 2 3 or 4

53-64 1 1 1 1 1 or 2 2,3 or 4 3 or 5

64-77 1 1 1 1 2,3 or 4 2,3 or 4 5

72-87 1 1 1 1 3 or 4 3 or 4 5

88-106 1 1 1 1 or 2 3 or 4 3,4 or 5 5,6 or 7

108-130 1 1 1 2 4 5 or 6 7 or 8

124-149 1 1 1 2 5 5 or 6 7 or 8

130-156 1 1 1 2 or 3 5 5 or 6 7 or 8

145-174 1 1 1 2 or 3 5,6 or 7 5,6 or 7 7 or 8

161-193 1 1 1 2 or 3 5,6 or 7 7 8

189-227 1 1 2 2 or 3 7 7 or 8 8

216-260 2 2 2 3 7 or 8 7 or 8 8

233-280 2 2 2 3 or 4 7 or 8 8 8

243-292 2 or 3 2 2 or 3 3 or 4 7 or 8 8 8

270-324 2 or 3 2 2 or 3 3 or 4 8 8 8

324-389 2 or 3 3 2 or 3 4 or 5 8 8

340-408 3 or 4 3 3 or 4 5 8 8

378-455 3 or 4 3 or 4 3 or 4 5,6 or 7 8 8

400-480 3 or 4 3 or 4 3 or 4 5,6 or 7 8 8

430-516 3 or 4 3 or 4 3 or 4 5,6,7 or 8 8 8

460-552 3 or 4 3 or 4 3 or 4 5,6,7 or 8 8

540-648 5 4 or 5 4 or 5 7 or 8

590-708 5 5 5 or 6 7 or 8

645-774 7

708-850 5,6 or 7 5,6 or 7 5,6 or 7 7 or 8

720-864 7

800-960 7

815-978 5,6 or 7 7 7 8

829-995 8

850-1020 7 or 8 7 or 8 7 or 8 8

900-1080 7 or 8 7 or 8 7 or 8

1000-1200 8

1020-224 7 or 8 7 or 8 7 or 8

1175-1410 7 or 8 8 7 or 8

1280-1536 8

1326-1590 8 8 8

Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 3

* NEMA Standard Sizes

11-

16 (1.4375) 2-3/4 (2.750)

* 2 1-7/16 (1.4375) 3-3/8 (3.375)

31-

16 (1.4375) 4-3/8 (4.375)

* 4 1-13/16 (1.8125) 3-3/8 (3.375)

* 5 1-13/16 (1.8125) 4-3/8 (4.375)

62-

16 (2.0625) 3-3/8 (3.375)

* 7 2-1/16 (2.0625) 4-3/8 (4.375)

82-

16 (2.5625) 4-3/8 (4.375)

Case

Number Diameter

(ww

w0.015) Length

(+0.020, -0.030)

Capacitance ratings in other case sizes may be available.

Contact NACC Application Engineer for assistance.

4Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293

Mounting Accessories

HB brackets are used with PL or PLA end caps. The bracket is

assembled to the motor or any suitable surface by two screws in

line at any con v enient position within the center-to-center dimen-

sion (C) shown in the chart.

Material: .042 spring steel with black parkerized finish.

HB Bracket

HB2 1 3-3/8"1-

11/64"7/8" 1.258

HB4 2-4-6 4-1/64"1-

13/16"1-

"1-

37/64"

HB8 3-5-7-8 5-1/64"2-

23/32"1-

25/32"2-

64"

Catalog

Number EIA

Case Code DC*BA

Dimensions (Ref.)

PLA PL

PL and PLA End Caps When assembling directly to the motor frame, the wires are brought

through the bracket hole and connected to the capacitor termi-

nals. Type PL end cap is then placed in position and the entire

assembly snapped into place. Off-motor mounting is similarly

accomplished except that Type PLA caps should be used to pro-

vide for leads emerging from the opposite side of the cap without

going through the bracket hole.

End caps and brackets are shipped

loose and should be separately

ordered when required. Add 'A'

to the PL part numbers if PLA cap

is desired (Example: PLA3).

Catalog Number

Wire Hole

Toward Bracket Wire Hole

Away From Bracket

PL3 PLA3 1-2-3 1-7/16"

PL6 PLA6 4-5 1-13/16"

PL8 PLA8 6-7 2-1/16"

PL10 PLA10 8 2-9/16"

Dimension

EIA

Case Code

.375

VR Brackets Type VR brackets are available for ver tical mounting. They are

supplied with clamping screws and nuts.

Material is .035 thick 1010 CRS, commercial grade #4 temper

ASI-scale. Parts are finished with .0001 (nominal) zinc chromate

plating.

B Mtg

120!

.176 x .281

(3 places)

.500

.750

1.125

2 Holes

.201 Dia

.219

.375

.156

Mtg.

.750

.562

2 Holes

.1561 Dia.

Catalog

Number

VR3 1-2-3 1-3/8"to1-

16"1-

25/32"1-

VR6 4-5 1-3/4"to1-

13/16"2-

"2-

16"

VR8 6-7 2" to 2-1/16"2-

"2-

13/16"

VR10 8 2-1/2"to2-

16"3"3-

16"

EIA

Case Code CA B

Dimensions (Ref.)

VR3 VR6-8-10

.375

PLAPL

Wire Leads

Insulated wire leads are available by special order.

Specifications:

Size: #18 AWG x 10" long

Insulation: 600V ; +105!C

Terminal Configurations:

#10 Ring

1/4" Quick Connect - Female Flag

1/4" Quick Connect - Female In-Line

Bare - Stripped and Tinned

Other options and configurations available upon submission of

customer drawing and/or specification.

* Center-to-center dimension.

.9375 Space

*C 1.375

.3125 R .2188 R

.230

.875

1.1875

.234

.750

.094

.191 R

Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 5

Application Guide

110 21-25 124-149 3/4291/42.5 50,000

130-156 243-292 1 59 1.670 50,000

270-324 378-454 1 239 1.110 33,500

400-480 540-648 1 119 0.833 25,000

590-708 850-1020 1 179 0.556 16,500

1000-1200 1280-1536 1 239 0.417 12,500

115 21-25 108-130 3/4291/42.5 50,000

124-149 189-227 1 59 1.670 50,000

216-259 340-408 1 89 1.110 33,500

378-454 460-552 1 119 0.833 25,000

540-648 815-978 1 179 0.556 16,500

829-995 1020-1224 1 239 0.417 12,500

125 21-25 81-106 3/4291/42.5 50,000

108-130 145-174 1 59 1.670 50,000

161-193 233-280 1 89 1.110 33,500

243-292 378-454 1 119 0.833 25,000

400-480 590-708 1 179 0.556 16,500

645-774 800-960 1 239 0.417 12,500

165 21-25 88-106 159 1.670 33,500

108-130 124-149 1 89 1.110 33,500

130-156 216-259 1 119 0.833 25,000

233-280 340-408 1 179 0.556 16,500

378-454 590-708 1 239 0.417 12,500

220 21-25 43-52 1 59 1.670 33,500

37-56 72-86 1 89 1.110 33,500

88-106 145-174 1 119 0.833 25,000

161-193 243-292 1 179 0.556 16,500

270-324 430-516 1 239 0.417 12,500

250 21-25 30-36 1 59 1.670 33,500

36-43 64-77 1 89 1.110 33,500

72-86 88-106 1 119 0.833 25,000

108-130 189-227 1 179 0.556 16,500

216-259 324-389 1 239 0.417 12,500

330 21-25 21-25 1 59 1.670 33,500

25-36 30-36 1 89 1.110 33,500

36-43 64-77 1 119 0.833 25,000

72-86 88-106 1 179 0.556 16,500

108-130 130-156 1 239 0.417 12,500

From To

Rated

Voltage Test

Volts AC (rms)

Capacitance

Rating (mfd) Duty Cycle

Secs.

(On) Secs.

(Off)

Duty

Cycle

(No. of

Starts)

Figure A: Type 2 (MSA)

1.1 VOL TAGE RATING

The rated voltage of the capacitor must be greater than or equal to

the average voltage across the capacitor terminals during the mo-

tor starting cycle. This is not necessarily the same as the motor

line voltage. In addition, the cutoff voltage rating of the capaci-

tor must be greater than or equal to the maximum voltage attained

across the terminals of the capacitor in actual service.

The maximum recommended cut-off voltages for the seven stan-

dard voltage ratings are as follows:

Rated Maximum

Voltage (rms) Cut-Off Voltage (rms)

110 140

115 145

125 160

165 210

220 280

250 300

330 400

These ratings are based on the maximum capacitor temperature

of 150!F.

1.2 CAPACITANCE RATING

The capacitance is chosen to give the necessary starting torque to

the motor. The minimum capacitance value is the minimum de-

signed capacitance. The maximum capacitance is 20% more than

that value.

1.3 DUTY CYCLE

The duty cycle should be calculated for each application. It is the

ratio of the time the capacitor is on voltage to the total time of one

cycle. The duty cycles for the normal performance of Type 2

(MSA) capacitors are listed in Figure A. NACC Type MSA ca-

pacitors may be used in any intermittant application within their

temperature and voltage range where the duty cycle does not ex-

ceed that listed in the table in Figure A. This is in accordance

with the standards in EIA Specification RS-463 for Type 2 ca-

pacitors.

If a particular application exceeds the normal duty cycle, but does

not exceed the values listed in Figure B, an extra performance or

Type 1 (MSB) capacitor is required.

1.4 Frequency

These capacitors are engineered for 60 Hz application but may

be operated between 47 Hz and 60 Hz without damage provided

voltage limitations stated above are observed. For other varia-

tions in frequency , contact North American Capacitor Company,

Indianapolis, IN.

X X

X T ypical life expectancy is 50,000 cycles for 110, 115 and 125V

ratings, and 40,000 total cycles for 165, 220, 250 and 330V

ratings. The number of cycles shown in the table above are

for the convenient test time of 35 days total for all ratings. See

section 3.0 for testing procedures.

Figure B: Type 1 (MSB)

Rated

Voltage

AC (rms) Capacitance

Rating (On) (Off)

Life T est

Duty Cycle %

Duty

Cycle Duration of Test

(Number of Starts)

110 all 3/4291/42.5 75,000

115 all 3/4291/42.5 75,000

125 all 3/4291/42.5 75,000

165 all 1 59 1.670 40,000

220 all 1 59 1.670 40,000

250 all 1 59 1.670 40,000

330 all 1 59 1.670 40,000

If an application exceeds the duty cycles in Figure B, other

methods of capacitor selection must be used. Contact NACC,

Application Engineering for assistance.

Application Guide (Continued)

6Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293

1.5 MOUNTING

V ertical mounting of the capacitor with the terminals up is rec-

ommended. However , horizontal mounting is acceptable provid-

ing the vent is located in the up position. Vertical mounting with

the terminals down is not recommended because the capacitor life

may be reduced and the operation of the pressure relief vent im-

paired.

1.6 SOLVENTS

Solvent residues on the capacitors after cleaning may penetrate

the seal and cause internal corrosion resulting in shortened life.

Alcohol or water detergent cleaning is not usually harmful but

halogenated cleaning solvents are not recommended and

should be avoided.

1.7 SAFETY

Because the watt-second value of these capacitors is high, pre-

cautions should be taken during the testing and application of these

devices.

Discharge resistors should be specified when there is a possibility

of a residual charge left on the capacitor or to protect contacts.

Mis-application, such as exceeding design limits or applying con-

tinuous AC voltage, may result in destruction or explosion of

capacitors.

Performance Characteristics

2.1 TEMPERA TURE

2.1.1 OPERATING: These capacitors are designed to oper-

ate within the ambient temperature range of -40!C to +65!C.

2.1.2 STORAGE: These capacitors may be subjected, with

out permanent damage, to conditions in transit where temp-

eratures range from -55!C to +95!C.

2.1.3 TOLERANCE: Unless otherwise specified, tempera-

ture tolerance shall be w3!C.

2.2 FREQUENCY

Unless otherwise specified, frequency shall be 50-60 Hz.

2.3 VOL T A GE RA TING

The rated voltage is the rms value of AC voltage at which the

capacitor may be operated at its normal duty cycle and maximum

ambient temperature.

2.4 CAPACITANCE AND POWER FACTOR

The capacitance and power factor are measured by the voltage,

current, power method with 60 Hz sinusoidal rated voltage ap-

plied to the capacitor at standard conditions per EIA 463, Para-

graph 9. Whenever voltage is applied, there is the possibility the

capacitor may vent. Care should be taken to shield the capacitor

from observers to prevent injury during testing.

2.5 TERMINAL STRENGTH

The capacitance terminals shall be capable of withstanding a steady

pull of 10 pounds applied gradually in any direction for a period

of 10 seconds. There shall be no loosening of the terminals or

damage to the terminals or seal. A torque of 4 inch-pounds ap-

plied to the terminals shall not cause them to rotate.

2.6 VIBRATION

Capacitors shall be clamped rigidly to a vibration platform and

subjected to a simple harmonic motion having a maximum peak-

to-peak amplitude of .06 inches and a maximum acceleration of

10g. The frequency of vibration shall be varied linearly between

10 and 55 cycles per second. The entire frequency range, 10 to

55cps, shall be traversed in one minute.

Capacitors shall be vibrated for 1 hour with the direction of mo-

tion be in parallel to the axis of the capacitor . The capacitors shall

then be placed so that the direction of motion is perpendicular to

the axis and the vibration continued for one hour.

There shall be no evidence of loosening of the capacitor element

within the container, when shaken by hand following the test. There

shall be no indication of intermittent contact during the 3 minute

observation period. Capacitors shall not be open or shorted.

2.7 CASE INSULATION TEST

The capacitors shall be capable of withstanding the application of

1500 volts ac rms 60 Hz for 5 seconds between the terminals and

a metal foil tightly surrounding the lateral surface of the plastic

case or insulating sleeve without breakdown or flashover.

2.8 OVERVOLTAGE TEST

Capacitors shall be capable of withstanding the application of 140

percent of rated voltage ac rms 60 Hz for one second at room

temperature conditions without breakdown or visible damage to

them.

2.9 VENT TEST

Capacitors shall be capable of releasing any excessive internal

pressure without violent expulsion of capacitor element or cover

or emission of flame, when rated ac rms voltage 60 Hz is applied

continuously to a capacitor. Care should be taken to shield the

capacitor from observers to prevent injury .

Performance Characteristics (Continued)

3.0 ACCELERATED LIFE TEST

Capacitors shall be capable of withstanding life test in a 65!C

w3!C ambient at rated sinusoidal voltage and frequency with cur-

rent limiting and discharge resistors. A resistance equivalent to

approximately 10% of the capacitor impedance shall be connected

in series with each capacitor and a resistor of approximately 1000

ohms shall be connected in parallel with each capacitor . Life test

shall be conducted in a test chamber with capacitors separated by

at least 1 inch of air and with sufficient circulation so that the

ambient temperature remains within the above temperature limits

and does not vary more than w1!C.

Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 7

Also capacitors shall not be exposed to direct radiation from heat-

ing elements.

T est voltage is applied to the capacitor resistor combination. Spe-

cial test conditions for Type 1 and Type 2 capacitors are given in

the tables in section 1.3. At the conclusion of the life test, at room

temperature, the capacitance shall not differ from the initial mea-

sured value by more than w25% and the power factor shall not

exceed 20%.

Procedure for Capacitance and Power Factor Measurement

T ype MS motor start capacitors are intended for intermittent duty application. The capacitance and power factor should be measured

by or referenced to the ammeter and wattmeter (impedance) method described as follows.

W ARNING: V oltage should not be applied for more than 4 seconds to prevent over-heating of the capacitor

and incorrect measurements.

T est with capacitor in upright position (contacts up) to allow proper functioning of safety vent.

Over heating of any capacitor may result in sudden expulsion of hot flammable material. Enclose the

capacitor under test to prevent injury to persons in the event of abnormal capacitor failure.

All measurements are referenced to 25!C (77!F). Capacitors just brought in from the cold or recently tested (hot) must be allowed to

stabilize to room temperature (3-4 hours)

Other methods of capacitance and power factor measurement may result in erroneous readings.

For further information or help call North American Capacitor Co., AC Motor Start Product Manager at: (317) 273-0090

Capacitance is calculated by the following formula

when frequency is 60 Hertz.

Capacitance (eF) = Rated (Applied) Volts

2652 x Amps

Power factor is calculated as follows:

Volts x Amps

Watts x 100

% Power factor =

The information contained herein is belie ved to be correct, but no guarantee or warr anty , express or implied, with respect to accuracy, completeness or results is extended and

no liability is assumed. Nothing herein is to be construed as advising or author izing practice of any invention covered by existing patent rights owned by NACC or others

without license from the owners thereof. In the interest of impro ved design and perf ormance, NACC reserves the right to make c hanges in any specification, data or material

contained herein.

Switch

AC Line V

Capacitor

Under Load

PAC Motor Run Capacitors

PAluminum Electrolytic Capacitors

PSolid Tantalum Capacitors

PWet Tantalum Capacitors

PLeaded Ceramic Capacitors

PDC Film Capacitors

PSurface Mount Multilayer Ceramic Capacitors

PSurface Mount DC Film Capacitors

PDC Voltage Rotary Fans

PSwitches and Controls

PSonalertH Audible Signal Devices

TIB MS00

Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293

Other electrical and electronic components available from NACC: