TYPE MS ELECTROLYTIC AC MOTOR START CAPACITORS FEATURES: HIGH LIGHTS: Capacitance: Voltage: Operating Frequency: Power Factor: Ambient Temperature: Case Sizes: 21 - 1590 Mfd 110 Vac - 330 Vac 50 - 60 Hz 10% Max. -40!C +65!C 1-7/16" x 2-3/4" to 2-9/16" x 4-3/8" Moisture & Oil Resistant Plastic Case Compact Size Easily Mounted Long Life and High Reliability APPLICATIONS: Motor Starting and other Intermittent AC applications Made In U.S.A. The MS motor start aluminum electrolytic capacitor is used to provide the torque necessary to start AC motors and can be used in other intermittent AC applications. The capacitor comes in all popular styles with a variety of terminal configuration choices. NACC Motor Start Capacitors are designed in accordance with EIA RS-463. Mallory Products for CDE 6325 Digital Way Indianapolis, Indiana 46278 Phone: (317) 275-2285 Fax: (317) 275-2293 Internet: http://www.cornell-dubilier.com Type MS Standard Terminal Layouts & Resistor Layout * NEMA Standard Sizes Case Code 1-7/16 1-7/16 1-7/16 1-13/16 1-13/16 2-1/16 2-1/16 2-9/16 1 *2 3 *4 *5 6 *7 8 .140 R .406 .266 L (+0.020, -0.030) D w 0.015) (w 2-3/4 3-3/8 4-3/8 3-3/8 4-3/8 3-3/8 4-3/8 4-3/8 (1.4375) (1.4375) (1.4375) (1.8125) (1.8125) (2.0625) (2.0625) (2.5625) Resistors - Resistors are available at extra cost in ratings specified. Layout as shown below is mandatory on case diameter 1-7/16" (case # 1-2-3) but other positioning is possible on larger sizes. ( *Standard) C (Ref.) (2.750) (3.375) (4.375) (3.375) (4.375) (3.375) (4.375) (4.375) 1/ 2 1/ 2 1/ 2 5/ 8 5/ 8 7/ 8 7/ 8 7/ 8 (.500) (.500) (.500) (.625) (.625) (.875) (.875) (.875) Rating .250 .106 Dia 4700 Ohms 1 Watt 15000 Ohms 1 Watt 5600 Ohms 2 Watt *15000 Ohms 2 Watt 33000 Ohms 2 Watt 10% 10% 10% 10% 10% .250 .250 .094 .385 .285 .160 .109 .094 .365 .281 .154 .109 .156 .130 .070 .100 Dia Single Disconnect Terminals (SQC) (All Cases) Solder Lug Terminals (SL) (All Cases) .125 (Ref) C .0625 (Ref) L .365 .281 x 3/4 x 3/4 5/16 x 3/4 5/16 x 3/4 5/16 x 3/4 1/4 .154 .1875 Dia .095 Dia .333 .250 .100 Dia Standard Dual Disconnect Terminals (DQC) (All Cases) C 1/4 .094 .070 .100 Dia Size (Max) Tolerance Dual Disconnect Terminals W/Solder Lug Terminal (DQCS) (Case 4, 5, 6, 7 & 8 only) C C .0625 (Ref) .0625 (Ref) D Part Number Nomenclature Standard Part Number MS A 1 R 10 NACC Type Designation Identifies the basic capacitor design; Performance A = EIA Type 2 B = EIA Type 1 Case Code (See standard ratings page) Case Type R = Recessed (Standard). Voltage Rating 10 = 110 22 = 220 11 = 115 25 = 250 12 = 125 33 = 330 16 = 165 Minimum Capacitance Expressed in microfarads. Always 3 or 4 digits. Resistor N = No resistor (Standard) R = With Resistor 2 Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 161 N Ratings Charts MSA Standard Ratings MSB Standard Ratings Normal Performance (EIA Type 2) Extra Performance (EIA Type 1) MFD 110 Vac 115 Vac 125 Vac 165 Vac 220 Vac 250 Vac 330 Vac MFD 110 Vac 115 Vac 125 Vac 165 Vac 220 Vac 250 Vac 330 Vac 21-25 1 1 1 1 1 1 1 or 2 21-25 1 1 1 1 1 1 1 or 2 25-30 30-36 1 1 1 1 1 1 1 1 1 1 1 2 1 or 2 1,2,3 or 4 25-30 30-36 1 1 1 1 1 1 1 1 1 1 1 1 or 2 2 3 or 4 36-43 43-52 1 1 1 1 1 1 1 1 1 1 or 2 2 2 2 or 4 3 or 4 36-43 43-52 1 1 1 1 1 1 1 1 1 or 2 1 or 2 1 or 2 2,3 or 4 3 or 4 4 or 5 47-56 53-64 1 1 1 1 1 1 1 1 1 or 2 1 or 2 2 2,3 or 4 3 or 4 3 or 5 47-56 53-64 1 1 1 1 1 1 1 1 1 or 2 2,3 or 4 2,3 or 4 3 or 4 5 5 64-77 72-87 1 1 1 1 1 1 1 1 5 5 64-77 72-87 1 1 1 1 1 1 1 1 2,3 or 4 3 or 4 4 4 5 5 88-106 108-130 1 1 1 1 1 1 1 or 2 2 3 or 4 4 3,4 or 5 5 or 6 5,6 or 7 7 or 8 88-106 108-130 1 1 1 1 1 1 1 or 2 2 4 5 5 5 7 8 124-149 130-156 1 1 1 1 1 1 2 2 or 3 5 5 5 or 6 5 or 6 7 or 8 7 or 8 124-149 130-156 1 1 1 1 1 1 or 2 3 or 4 3 or 4 5 5 7 7 or 8 145-174 161-193 1 1 1 1 1 1 2 or 3 2 or 3 7 or 8 8 145-174 161-193 1 1 1 2 2 2 or 3 3 or 4 4 7 7 or 8 8 8 189-227 216-260 1 2 1 2 2 2 2 or 3 3 7 7 or 8 7 or 8 7 or 8 8 8 189-227 216-260 2 2 or 3 3 or 4 3 or 4 2 or 3 3 or 4 4 5 7 or 8 8 8 8 233-280 243-292 2 2 or 3 2 2 2 2 or 3 3 or 4 3 or 4 7 or 8 7 or 8 8 8 8 8 233-280 243-292 2 3 or 4 2 or 4 4 3 or 4 3 or 4 5 5 8 8 270-324 324-389 2 or 3 2 or 3 2 3 2 or 3 2 or 3 3 or 4 4 or 5 8 8 8 8 8 270-324 324-389 3 or 4 3 or 4 4 5 4 or 5 5 5 5 8 340-408 378-455 3 or 4 3 or 4 3 3 or 4 3 or 4 3 or 4 5 5,6 or 7 8 8 8 8 340-408 378-455 3 or 5 5 5 5 5 5 7 8 400-480 430-516 3 or 4 3 or 4 3 or 4 3 or 4 3 or 4 3 or 4 5,6 or 7 5,6,7 or 8 8 8 8 8 400-480 430-516 5 5 5 or 7 7 5 7 8 460-552 540-648 3 or 4 5 3 or 4 4 or 5 3 or 4 4 or 5 5,6,7 or 8 7 or 8 8 460-552 540-648 5 7 7 7 7 8 590-708 645-774 5 7 5 5 or 6 7 or 8 590-708 710-850 7 8 7 or 8 8 708-850 720-864 5,6 or 7 7 7 or 8 815-978 8 800-960 815-978 7 5,6 or 7 7 7 8 829-995 850-1020 8 7 or 8 7 or 8 7 or 8 8 900-1080 1000-1200 7 or 8 8 7 or 8 7 or 8 1020-224 1175-1410 7 or 8 7 or 8 7 or 8 8 7 or 8 7 or 8 1280-1536 1326-1590 8 8 8 8 5,6 or 7 5,6 or 7 2,3 or 4 2,3 or 4 3 or 4 3 or 4 5,6 or 7 5,6 or 7 5,6 or 7 7 Capacitance ratings in other case sizes may be available. Contact NACC Application Engineer for assistance. Case Number Diameter w 0.015) (w Length (+0.020, -0.030) 1 1-7/16 (1.4375) 2-3/4 (2.750) 1-7/ (1.4375) (1.4375) 3-3/8 (3.375) 4-3/8 (4.375) *4 *5 1-13/16 (1.8125) 1-13/16 (1.8125) 3-3/8 (3.375) 4-3/8 (4.375) 6 *7 2-1/16 (2.0625) 2-1/16 (2.0625) 3-3/8 (3.375) 4-3/8 (4.375) 8 2-9/16 (2.5625) 4-3/8 (4.375) *2 3 16 1-7/16 * NEMA Standard Sizes Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 3 Mounting Accessories HB Bracket 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 convenient position within the center-to-center dimension (C) shown in the chart. .2188 R .3125 R Material: .042 spring steel with black parkerized finish. .9375 Space D .750 A B C* D .094 .191 R 1.375 Dimensions (Ref.) Catalog EIA Number Case Code HB2 *C .234 .230 B A .875 1.1875 3-3/8" 1 HB4 2-4-6 HB8 3-5-7-8 4-1/ 64" 5-1/64" 1-11/64" 1-13/ 16" 2-23/32" 7/ 8" 1.258 1-1/ 2" 1-37/64" 1-25/32" 2-5/64" * Center-to-center dimension. PL and PLA End Caps Catalog Number Wire Hole Toward Bracket Wire Hole Away From Bracket PL3 PL6 PL8 PL10 A EIA Case Code Dimension 1-2-3 4-5 6-7 8 1-7/16" 1-13/16" 2-1/16" 2-9/16" PLA3 PLA6 PLA8 PLA10 .375 .375 A When assembling directly to the motor frame, the wires are brought through the bracket hole and connected to the capacitor terminals. 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 provide 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). A PL PLA PLA .176 x .281 (3 places) VR Brackets Type VR brackets are available for vertical 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. A .219 C A B Mtg .375 120! B Mtg. .156 .500 C 2 Holes .1561 Dia. .562.750 VR3 1.125 Dimensions (Ref.) 2 Holes .201 Dia Catalog Number EIA Case Code A B C 1-25/32" 2-1/4" 2-1/2" 3" 1-7/8" 2-9/16" 2-13/16" 3-5/16" .750 VR6-8-10 Wire Leads Insulated wire leads are available by special order. Specifications: Size: Insulation: PL #18 AWG x 10" long 600V ; +105!C VR3 VR6 VR8 VR10 1-2-3 4-5 6-7 8 1-3/8" 1-3/4" 2" 2-1/2" to to to to 1-7/16" 1-13/16" 2-1/16" 2-9/16" 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. 4 Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 Application Guide Figure A: Type 2 (MSA) 1.1 VOLTAGE RATING The rated voltage of the capacitor must be greater than or equal to the average voltage across the capacitor terminals during the motor starting cycle. This is not necessarily the same as the motor line voltage. In addition, the cutoff voltage rating of the capacitor must be greater than or equal to the maximum voltage attained Rated Voltage Test Volts AC (rms) 110 across the terminals of the capacitor in actual service. 115 The maximum recommended cut-off voltages for the seven standard voltage ratings are as follows: Rated Voltage (rms) 110 115 125 165 220 250 330 Maximum Cut-Off Voltage (rms) 140 145 160 210 280 300 400 125 165 220 These ratings are based on the maximum capacitor temperature of 150!F. 1.2 CAPACITANCE RATING 250 The capacitance is chosen to give the necessary starting torque to the motor. The minimum capacitance value is the minimum designed capacitance. The maximum capacitance is 20% more than 330 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 capacitors may be used in any intermittant application within their temperature and voltage range where the duty cycle does not exceed that listed in the table in Figure A. This is in accordance with the standards in EIA Specification RS-463 for Type 2 capacitors. 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 variations in frequency, contact North American Capacitor Company, Indianapolis, IN. Capacitance Rating (mfd) From To 21-25 130-156 270-324 400-480 590-708 1000-1200 21-25 124-149 216-259 378-454 540-648 829-995 21-25 108-130 161-193 243-292 400-480 645-774 21-25 108-130 130-156 233-280 378-454 21-25 37-56 88-106 161-193 270-324 21-25 36-43 72-86 108-130 216-259 21-25 25-36 36-43 72-86 108-130 Duty Cycle Secs. Secs. (On) (Off) 124-149 243-292 378-454 540-648 850-1020 1280-1536 108-130 189-227 340-408 460-552 815-978 1020-1224 81-106 145-174 233-280 378-454 590-708 800-960 88-106 124-149 216-259 340-408 590-708 43-52 72-86 145-174 243-292 430-516 30-36 64-77 88-106 189-227 324-389 21-25 30-36 64-77 88-106 130-156 3/ 4 1 1 1 1 1 3/ 4 1 1 1 1 1 3/ 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 291/4 59 239 119 179 239 291/4 59 89 119 179 239 291/4 59 89 119 179 239 59 89 119 179 239 59 89 119 179 239 59 89 119 179 239 59 89 119 179 239 % Duty Cycle X (No. of Starts) 2.5 1.670 1.110 0.833 0.556 0.417 2.5 1.670 1.110 0.833 0.556 0.417 2.5 1.670 1.110 0.833 0.556 0.417 1.670 1.110 0.833 0.556 0.417 1.670 1.110 0.833 0.556 0.417 1.670 1.110 0.833 0.556 0.417 1.670 1.110 0.833 0.556 0.417 50,000 50,000 33,500 25,000 16,500 12,500 50,000 50,000 33,500 25,000 16,500 12,500 50,000 50,000 33,500 25,000 16,500 12,500 33,500 33,500 25,000 16,500 12,500 33,500 33,500 25,000 16,500 12,500 33,500 33,500 25,000 16,500 12,500 33,500 33,500 25,000 16,500 12,500 Typical 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. X Figure B: Type 1 (MSB) Rated Voltage AC (rms) Capacitance Rating 110 115 125 165 220 250 330 all all all all all all all Life Test Duty Cycle (On) (Off) % Duty Cycle 3/ 4 3/ 4 3/ 4 291/4 291/4 291/4 59 59 59 59 2.5 2.5 2.5 1.670 1.670 1.670 1.670 1 1 1 1 Duration of Test (Number of Starts) 75,000 75,000 75,000 40,000 40,000 40,000 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. Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 5 Application Guide (Continued) 1.5 MOUNTING halogenated cleaning solvents are not recommended and Vertical mounting of the capacitor with the terminals up is rec- should be avoided. ommended. However, horizontal mounting is acceptable provid1.7 SAFETY ing the vent is located in the up position. Vertical mounting with the terminals down is not recommended because the capacitor life Because the watt-second value of these capacitors is high, premay be reduced and the operation of the pressure relief vent im- cautions should be taken during the testing and application of these devices. 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 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 continuous AC voltage, may result in destruction or explosion of capacitors. Performance Characteristics 2.1 TEMPERATURE 2.1.1 OPERATING: These capacitors are designed to operate 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 temperatures range from -55!C to +95!C. 2.1.3 TOLERANCE: Unless otherwise specified, temperature tolerance shall be w3!C. 10 and 55 cycles per second. The entire frequency range, 10 to 55cps, shall be traversed in one minute. 2.2 FREQUENCY 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. Unless otherwise specified, frequency shall be 50-60 Hz. 2.3 VOLTAGE RATING Capacitors shall be vibrated for 1 hour with the direction of motion 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. The rated voltage is the rms value of AC voltage at which the capacitor may be operated at its normal duty cycle and maximum 2.7 CASE INSULATION TEST ambient temperature. The capacitors shall be capable of withstanding the application of 1500 volts ac rms 60 Hz for 5 seconds between the terminals and 2.4 CAPACITANCE AND POWER FACTOR a metal foil tightly surrounding the lateral surface of the plastic The capacitance and power factor are measured by the voltage, current, power method with 60 Hz sinusoidal rated voltage ap- case or insulating sleeve without breakdown or flashover. plied to the capacitor at standard conditions per EIA 463, Para- 2.8 OVERVOLTAGE TEST graph 9. Whenever voltage is applied, there is the possibility the Capacitors shall be capable of withstanding the application of 140 capacitor may vent. Care should be taken to shield the capacitor percent of rated voltage ac rms 60 Hz for one second at room from observers to prevent injury during testing. temperature conditions without breakdown or visible damage to 2.5 TERMINAL STRENGTH them. The capacitance terminals shall be capable of withstanding a steady 2.9 VENT TEST pull of 10 pounds applied gradually in any direction for a period Capacitors shall be capable of releasing any excessive internal of 10 seconds. There shall be no loosening of the terminals or pressure without violent expulsion of capacitor element or cover damage to the terminals or seal. A torque of 4 inch-pounds ap- or emission of flame, when rated ac rms voltage 60 Hz is applied plied to the terminals shall not cause them to rotate. continuously to a capacitor. Care should be taken to shield the capacitor from observers to prevent injury. 2.6 VIBRATION Capacitors shall be clamped rigidly to a vibration platform and subjected to a simple harmonic motion having a maximum peakto-peak amplitude of .06 inches and a maximum acceleration of 10g. The frequency of vibration shall be varied linearly between 6 Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 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 current 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. Also capacitors shall not be exposed to direct radiation from heating elements. Test voltage is applied to the capacitor resistor combination. Special 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 measured value by more than w25% and the power factor shall not exceed 20%. Procedure for Capacitance and Power Factor Measurement Type 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. Capacitance is calculated by the following formula when frequency is 60 Hertz. I Switch AC Line V W Capacitance (eF) = Capacitor Under Load 2652 x Amps Rated (Applied) Volts Power factor is calculated as follows: Watts % Power factor = Volts x Amps x 100 WARNING: Voltage should not be applied for more than 4 seconds to prevent over-heating of the capacitor and incorrect measurements. Test 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 The information contained herein is believed to be correct, but no guarantee or warranty, 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 authorizing practice of any invention covered by existing patent rights owned by NACC or others without license from the owners thereof. In the interest of improved design and performance, NACC reserves the right to make changes in any specification, data or material contained herein. Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 7 Other electrical and electronic components available from NACC: P AC Motor Run Capacitors P Aluminum Electrolytic Capacitors P Solid Tantalum Capacitors P Wet Tantalum Capacitors P Leaded Ceramic Capacitors P DC Film Capacitors P Surface Mount Multilayer Ceramic Capacitors P Surface Mount DC Film Capacitors P DC Voltage Rotary Fans P Switches and Controls P SonalertH Audible Signal Devices Mallory Products for CDE/6325 Digital Way/Indianapolis IN 46278/Phone: (317)275-2285/Fax: (317)275-2293 Copyright F 1997 NACC TIB MS00