Self/Dual-Powered (Current Or Auxiliary DC) Supply For MCCB/ACB . - TI
TI DesignsSelf/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayTI DesignsDesign FeaturesTI Designs provide the foundation that you needincluding methodology, testing and design files toquickly evaluate and customize the system. TI Designshelp you accelerate your time to market. Design Resources TIDA-00229Tool Folder Containing Design FilesLM5017CSD18537NKCSLM293Tiva C SeriesLaunchPadProduct FolderProduct FolderProduct Folder Dual-Powered from Current Circuits and/orAuxiliary DC Input VoltageMOSFET Based Output DC Voltage ShuntRegulatorWide Input DC-DC Converter to Generate SupplyRailsInterface to Tiva Launchpad for Quick EvaluationSensing of Auxiliary and Current InputsFeatured Applications Product FolderMCCB and ACBDual and Self-Powered Protection RelaysElectronic Overload RelayASK Our Analog ExpertsWEBENCH Calculator ToolsAUX DCInput12 VRectified CurrentInputsRectifiedCurrent tor39 VPWM Curr ControlAux Volt SenseWide InputDC-DCConverter3.3 VLDOCurrent Input SenseTiva TM4C123LaunchpadAn IMPORTANT NOTICE at the end of this TI reference design addresses authorized use, intellectual property matters and otherimportant disclaimers and information.All trademarks are the property of their respective owners.TIDU304 – June 2014Submit Documentation FeedbackSelf/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments Incorporated1
System Description1www.ti.comSystem DescriptionMolded Case Circuit Breaker (MCCB) with Electronic Trip Unit (ETU)Electronic trip units are true RMS sensing-over-current trip devices, requiring no external supply for theirbasic functioning. Each MCCB-ETU (microprocessor-based) consists of current sensors, a processingunit, and a trip unit. The trip unit uses microprocessor-based technology to provide the adjustable timecurrent protection functions.True RMS sensing circuit protection is achieved by analyzing the secondary current signals received fromthe circuit breaker current sensors, and initiating trip signals to the circuit-breaker trip actuators withpredetermined trip levels and time delays.Basic ETU Principles The current flowing in each phase is monitored by Current Transformer (CT). Each phase of the transformed current goes through full wave rectification in the rectifier circuit. The largest current is selected for protection. A delay circuit calculates the time delay based on the current measured. A trigger circuit outputs a trip signal to the trip coil for protection.Salient ETU Features Error free and user friendly settings of current and time delay True RMS sensing with immunity to system disturbances Higher reliability and repetitive accuracy due to use of a microcontroller (MCU) Self-powered by a built-in current transformer Three-phase protection and Earth fault protection in the same unit LED and LCD indication for all tripping faultsWhy to Use MCCB-ETUsElectronic trip circuit breakers provide the same basic functions as standard thermal magnetic circuitbreakers. However, electronic trip circuit breakers offer a variety of additional benefits: Provide adjustability for enhanced coordination. Provide integral ground fault protection or alarm. Measure and report inherent ground-fault leakage. Provide capacity for future growth using:– Rating plugs.– 100% rated full-function trip system. Provide zone-selective interlocking to reduce fault stress on the electrical system. Provide power monitoring communications.Self-Powered (Current Transformer) Protection RelaySelf-powered (current transformer) protection relays are self-powered numerical relays, which do notrequire external auxiliary supply voltage. These self-powered numerical relays operate without auxiliaryvoltage via an integrated CT power supply. Self-powered numerical relays are an ideal choice forinstallation, even in remote locations where auxiliary supplies are not available. Self-powered numericalrelays derive operating power from current transformers. The standard current transformers secondaryoutputs are 1 A or 5 A.These self-powered numerical relays have low power consumption typically, 1.4 VA at IN (of the relay).The relay can be powered from these three analog phase measuring inputs as indicated in the followinglist: CT input phase L1 CT input phase L2 CT input phase L32Self/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments IncorporatedTIDU304 – June 2014Submit Documentation Feedback
System Descriptionwww.ti.comSelf-powered protection relays increase the availability of the network and are perfectly suited to mostapplications.Self-Powered relays are: Insensitive to voltage drop due to faults. Not dependent on UPS systems, which are a weak point of electrical installations. Less dependent on the external environment (due to electromagnetic compatibility [EMC] overvoltagesand low-voltage [LV] overvoltages) because self-power protection relays require no externalconnections.Current TransformerCurrent Transformers (CTs) are instrument transformers that are used to supply a reduced value ofcurrent from the bus bar or cables to meters, protective relays, sensors, and other instruments. CTsprovide isolation from high current. CTs permit grounding of the secondary for safety. CTs step down themagnitude of the measured current to a value that can be safely handled by the instruments. CT ratios areexpressed as a ratio of the rated primary current to the rated secondary current. For example, a 300:5 CTwill produce 5 A of secondary current when 300 A flows through the primary. As the primary currentchanges, the secondary current will vary accordingly. With 150 A through the 300-A rated primary, thesecondary current will be 2.5 A (150: 300 2.5: 5).Current sensors energize self-powered protection relays and breakers. Current sensor output is used togenerate the required power. MOSFET-based shunt regulators regulate output by shunting input currentwhen the output voltage exceeds a specified voltage amount. The startup delay of a self-powered relayvaries as a function of the current through the current transformers (CTs). With a load current above theminimum level required for power-up , there will be no start-up time delay. Then, the relays operate withintheir normal time settings. In cases where the start-up delay cannot be tolerated or higher output power isrequired, protection relays and breakers have a provision for power from an auxiliary DC voltage supply.This provision means protection relays and breakers can be up and running before a fault occurs.Standard auxiliary input voltage varies from 18 V to 35 V for a 24-V DC system.Dual power input ensures faster operation in the following cases: Auxiliary power supply is available at the time when a fault occurs. Auxiliary power supply has failed, but the load current is above the required minimum value to powerthe relay.TIDU304 – June 2014Submit Documentation FeedbackSelf/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments Incorporated3
Design Featureswww.ti.comWith self-powered input, the system is energized by CTs and no auxiliary power is needed. With a selfpowered system, the CT has to feed more power compared to a device being powered using auxiliaryvoltage. With reference to the entire measuring range of the protection devices, the input impedance ofthe individual phases is not linear.To ensure that the system functions over a wide range of current input (approximately 0.4 times ratedcurrent to 10 times rated current), a shunt regulator (MOSFET and comparator) is used to clamp thevoltage above 12 V, 18 V, or 24 V. This results in power loss as shown in Figure 1.Power Consumption per eaker Current Flowing (I)/Lowest Operating CurrentFigure 1. Typical Power Consumption for Current/Lowest Operating CurrentBy using an LM5017 based power supply, the clamping voltage can be increased as the device input israted up to 100 V. A power supply with shunt clamping and LM5017 configured in nonisolated outputconfiguration is detailed in this design.The following systems are generally current transformer powered systems: Molded case circuit breakers (MCCBs) are current transformer power electronic trip units. Protection relays are self-powered relays supplied by current sensors, requiring no auxiliary powersupply.2Design FeaturesTable 1. Design Features4DC-DC Converter 75-V DC input , 12-V DC outputZener Regulator 39-V DCLDO3.3-V DCComparator Power SupplyRegulated to 16-V DCDC-DC Converter Temperature-40 to 125 CSelf/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments IncorporatedTIDU304 – June 2014Submit Documentation Feedback
Block Diagramwww.ti.com3Block DiagramThe power supply is powered by two options:Self-Power (Current Sensor)The input to the self-power supply input is full wave-rectified input. This rectified input charges thecapacitor to generate the output voltage. The regulated DC output voltage is set by a Zener Diode and aMOSFET shunt regulator. The output voltage minus the Zener voltage is compared against a set voltageby the comparator to regulate the output DC voltage. A DC-DC converter is used to generate Relay/FSDtrip voltage and electronic circuit control voltages.Dual-Power (Auxiliary DC or Current Transformer)An auxiliary DC input voltage also can be applied to generate the required power supply along with theself-powered current inputs. The shunt regulation is bypassed when auxiliary voltage is applied.The Block Diagram in Figure 2 shows the major blocks in the Self/Dual-Powered Power Supply.AUX DCInput12 VRectified CurrentInputsRectifiedCurrent tor39 VPWM Curr ControlAux Volt SenseWide InputDC-DCConverter3.3 VLDOCurrent Input SenseTiva TM4C123LaunchpadFigure 2. Block DiagramTIDU304 – June 2014Submit Documentation FeedbackSelf/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments Incorporated5
Circuit Design and Component Selectionwww.ti.com4Circuit Design and Component Selection4.1LM5017 Wide Input DC-DC ConverterThe DC-DC converter is a buck type to generate Relay/FSD trip voltage and the electronic circuit controlvoltages. The input to the DC-DC converter is the external auxiliary DC input or the output of the shuntregulator.The DC input to the DC-DC converter is provided by either rectified current input or auxiliary DC input.The DC output is regulated to 39 V. In case both outputs are applied, the current is drawn from the supplythat has higher output voltage. The regulated output is given as the input to the DC-DC converter. TheDC-DC converter used in this design is LM5017. LM5017 has the following specifications. Wide 7.5-V to 100-V Input RangeIntegrated 100-V, High, and Low Side SwitchesNo Schottky Diode RequiredConstant On-time ControlNo Loop Compensation RequiredUltra-Fast Transient ResponseNearly Constant Operating FrequencyIntelligent Peak Current LimitAdjustable Output Voltage from 1.225 VPrecision 2% FeedbackFrequency Adjustable to 1 MHzAdjustable Under Voltage Lockout (UVLO)Remote ShutdownThermal ShutdownThe wide input capability of LM5017 makes LM5017 the best suited DC-DC converter for this application.The output of the DC-DC converter is programmed for 12 V.NOTE: The DC 39 V output can be increased up to 70 V based on application requirements.4.2CSD18537NKCS Zener Diode Plus MOSFET-Based Shunt RegulationThe combined circuit of Zener diode, comparator, and MOSFET works as a shunt regulator and regulatesthe output DC voltage to 39 V.The rectified current sensor input is applied across terminals 3 and 2. The shunt regulator circuit isfunctional only when the power supply is working in current-sensor powered mode. When the DC outputvoltage is above the set regulation voltage (39 V), the comparator switches the MOSFET ON. The parallelMOSFET connected across the rectified current outputs shunts the current sensor. The shunt processensures that the output capacitor does not charge. When the output voltage falls below the regulatedvoltage (39 V), the comparator switches the MOSFET OFF, allowing the capacitor to charge.The MOSFET-based shunt regulator is controlled by the following methods: By a comparator that regulates the output DC voltage to 39 V. By pulse width modulator (PWM) output from the microcontroller. The microcontroller senses theoutput voltage. Based on the set regulation voltage, the microcontroller regulates the output voltage bycontrolling the PWM output to the MOSFET.The PWM output width and frequency is dependent on the application and the power consumption.6Self/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments IncorporatedTIDU304 – June 2014Submit Documentation Feedback
Circuit Design and Component Selectionwww.ti.comThe MCCB-ETU uses the TI MOSFET to shunt the current above 39 V. Increased regulation voltagereduces power dissipation and facilitates usage of a lower VA current transformer. TI has a wide range ofMOSFETs that can be selected for current shunting, based on the application and the configuredregulation voltage, as shown in Table 2.Table 2. TI MOSFETs with Current ShuntingProduct DescriptionProduct Link60-V, N-Channel NexFET Power MOSFET4.3CSD18537NKCS60-V, N-Channel NexFET Power MOSFETCSD18534KCS80-V, N-Channel NexFET Power MOSFETCSD19506KCS80-V, 7.6-mΩ, N-Channel TO-220 NexFET Power MOSFETCSD19503KCS100-V, N-Channel NexFET Power MOSFETCSD19535KCS100-V, 6.4-mΩ, TO-220 NexFET Power MOSFETCSD19531KCSAuxiliary DC InputThe power supply also works with auxiliary DC input. The auxiliary input voltage range is 18-V to 35-V DC.When no startup delay for fault sensing is required, auxiliary DC input is used. If the protection relay orbreaker has functions requiring power 1 W, auxiliary DC input is used. Auxiliary DC input is appliedacross terminals 1 and 2. Most ETUs with communication and metering functions have a provision forauxiliary DC input.4.4TPS7A6533QKVURQ1 Low-Dropout Regulator (LDO)A low dropout regulator is used to generate the 3.3-V power supply required for the microcontroller andanalog signal conditioning amplifiers. The LDO used in this design is TPS7A6533. TPS7A65xx-Q1 is afamily of low dropout linear voltage regulators designed for low power consumption and quiescent currentless than 25 µA in light-load applications. TPS7A65xx-Q1 devices feature integrated overcurrentprotection. TPS7A65xx-Q1 devices are designed to achieve stable operation even with low-ESR ceramicoutput capacitors. A low-voltage tracking feature allows for a smaller input capacitor.4.5DC Input SensingA voltage divider is used to sense input voltage to identify if the supply is working from the auxiliary DCinput or the current input. The voltage divider sensing is required to stop PWM generation, when theregulator is operated in auxiliary DC input mode.The auxiliary voltage is given as input to the ADC of the MCU. The MCU measures the DC voltage andthe MCU senses that the auxiliary voltage is present. The MCU then switches OFF the PWM. The designof the power supply ensures that the shunt regulation has no effect when operated with auxiliary DC input.4.6Comparison of Self-Power SolutionsTable 3. Comparison of Self-Power SolutionsGENERAL IMPLEMENTATIONPROPOSED IMPLEMENTATIONRegulation Voltage15 V to 18 V 39 V and up to 70 VPower DissipationDissipate power during normal operationReduced or no power dissipation duringnormal operationCurrent Transformer SizingHigher CT sizeReduced CT sizeHeat Sink DesignLargerSmallerLinearityDepends on input currentLinear for nominal current rangeTIDU304 – June 2014Submit Documentation FeedbackSelf/Dual-Powered (Current or Auxiliary DC) Supply for MCCB/ACB/ProtectionRelayCopyright 2014, Texas Instruments Incorporated7
Test Data5Test Data5.1Functional Testingwww.ti.comTable 4. DC Output Voltage RegulationEXPECTED – DC VMEASURED – DC V39 V39.4 VTable 5. LDO Output VoltageEXPECTEDMEASURED3.3 V3.31 VTable 6. DC-DC Output VoltageINPUT VOLTAGE (DC-DC CONVERTER)MEASURED OUTPUT (DC-DC 853911.85Table 7. Comparator Supply Voltage8INPUT VOLTAGEPOWER SUPPLY /Dual-Powered (Current or Auxiliary DC) Supply for MCCB/ACB/ProtectionRelayCopyright 2014, Texas Instruments IncorporatedTIDU304 – June 2014Submit Documentation Feedback
Test Datawww.ti.comTable 8. Voltage Sensing and Differentiating of Input SuppliesINPUT SUPPLYMICROCONTROLLER SENSINGCurrent InputOkAuxiliary InputOkTable 9. Load RegulationVin ( V )Vout (V)Iout 752411.80300Table 10. Efficiency (Measured with Auxiliary Input)Pin – (W)Pout 5566.14.563.1377568.85.043.4267.9TIDU304 – June 2014Submit Documentation FeedbackSelf/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments Incorporated9
Design Fileswww.ti.com6Design Files6.1SchematicsTo download the Schematics, see the design files at TIDA-00229.Figure 3 and Figure 4 show some of the Schematics for this design.D15AUX IN1N4004400VD1439VL3C15 1µF3.3uH821R48 510112OUTGND2TP22R1953.6kC28100µF100VR41 00kTBLK 15A 0.0kFET CTRLREG OUTTP18L2C1843 0.01µF8C201µFC8C34 0.1µFJ190.1µF2R3710.0kA CHS1D81N4754A-TP3300pF R189.76kC210.1µFTP3122µFSB1100FSCT-ND1.00Meg16V X V12V02R131.00kR2710.0kR78R75CTRL VOLTREG OUTR391.00k12VR73FET CTRLR7210k1.00MegU5B03R4220k39VCTRL VOLTAUX VAUX INGND71 OUT-D11BAT54C-7-FR715LM293ADD12BAS21-7-FGNDVOLTAGE CTRL10k6R261.00kVOLTAGE CTRLR7010kGNDGNDGND39VC50.1µF12VuC3.3VFB13121000 FGNDD101N4004400V2D3GreenR2510.0k1C71µF16V CTP16 3.3V powerplaneA CIN OUT21GNDU1TPS7A6533QKVURQ112VGNDGNDFigure 3. Schematics Page 310Self/Dual-Powered (Current or Auxiliary DC) Supply for MCCB/ACB/ProtectionRelayCopyright 2014, Texas Instruments IncorporatedTIDU304 – June 2014Submit Documentation Feedback
Design Fileswww.ti.comuC3.3VuC3.3VJ7J1UCA1RXDUCA1TXDCAN0 RXCAN0 TX1357913579TP34TP23TP31TP22RS485 RX ENRS485 TX ENRS485 CHIP ENCTS246810SDO TSDI TCS TSCLK T246810PEC05DAANPEC05DAANGNDGNDACTIVE LEDTP13.3 REFJ31234567891011121314151617181920HEADER 2X103.3 REFTP2 TP3MUX S0MUX S1UCA1RXDUCA1RXDV ADCUCA1TXDI H gainUCA1TXDCAN0 RXCAN0 TXADC GP1I L gainADC GP2TP9SDO TTP12CTRL VOLTTP8MUX S2TP11CTRL VOLTTP6TP7TP5TP10AUX VGNDTP13TP4TP14AUX VACTIVE LEDJ61234567891011121314151617181920TP30GNDRS485 RX ENZCDRS485 TX ENRS485 CHIP ENTP34CTSCalib LEDTP32TP23TP31TP22SDI TVOLTAGE CTRLCS TTP33TP23SCLK TTP32TP35RS485 RX ENZCDRS485 TX ENTP29RS485 CHIP ENTP27Calib LEDTP28TP26TP25VOLTAGE CTRLTP24HEADER 2X10Figure 4. Schematics Page 6 MSP430/TIVA LAUNCH PADTIDU304 – June 2014Submit Documentation FeedbackSelf/Dual-Powered (Current or Auxiliary DC) Supply for MCCB/ACB/ProtectionRelayCopyright 2014, Texas Instruments Incorporated11
Design Files6.2www.ti.comBill of MaterialsTo download the bill of materials (BOM), see the design files at TIDA-00229. To see the BOM for the Fitted category, see Table 11.Table 11. Bill of TITY MANUFACTURERPACKAGEREFERENCEVALUEFittedCAP, CERM, 0.1uF,50V, /-10%, X7R,0603C5, C9, C30C0603C104K5RACTU3Kemet6030.1uFFittedCAP, CERM, 1uF,16V, /-10%, X7R,0603C6, C7C1608X7R1C105K2TDK6031uFFittedCAP, CERM, 22uF,16V, /-10%, AP, TA, 4.7uF,35V, /-10%, 1.9ohm, FittedCAP, CERM, 1uF,100V, /-10%, X7R,1206C15GRM31CR72A105KA01L 1MuRata12061uFFittedCAP, CERM, 0.1uF,100V, /-10%, X7R,0805C17, C24C0805C104K1RACTU2Kemet8050.1uFFittedCAP, CERM, 0.01uF, C1825V, /-5%,C0G/NP0, 0603C1608C0G1E103J1TDK6030.01uFFittedCAP, CERM,3300pF, 50V, /10%, X7R, 0603C19C0603C332K5RACTU1Kemet6033300pFFittedCAP, CERM, 1uF,25V, /-10%, X5R,0603C20C1608X5R1E105K080AC1TDK6031uFFittedCAP, CERM, 0.1uF,25V, /-5%, X7R,0603C21, C3406033C104JAT2A2AVX6030.1uFFittedCAP, AL, 100uF,100V, /-20%, 0.12ohm, THC28100YXJ100M10X201Rubycon10x20mm100uFFittedLED SmartLEDGreen 570NMD3LG L29K-G2J1-24-Z1OSRAM603GreenFittedDiode, Zener, 39V,1W, DO41D81N4754A-TP1Micro Commercial CoDO-411N4754A-TPFittedDiode, Zener, 16V,1W, DO41D91N4745A-TP1Micro Commercial CoDO-411N4745A-TP12Self/Dual-Powered (Current or Auxiliary DC) Supply for MCCB/ACB/ProtectionRelayCopyright 2014, Texas Instruments IncorporatedTIDU304 – June 2014Submit Documentation Feedback
Design Fileswww.ti.comTable 11. Bill of Materials ANTITY MANUFACTURERPACKAGEREFERENCEVALUEFittedDIODE, GENPURPOSE, 400V,1A, DO-41, THD10, de, Schottky,30V, 0.2A, SOT-23D11BAT54C-7-F1Diodes Inc.SOT-2330VFittedDiode, Switching,200V, 0.2A, SOT-23D12, D16BAS21-7-F2Diodes Inc.SOT-23200VFittedDiode, P-N, 1100V,1A, THD14SB1100FSCT-ND1Fairchild SemiconductorDO-41FittedFERRITE CHIP 1000 FB1OHM 300MA 0603MMZ1608B102C1TDK Corporation6031000 OHMFittedHEATSINK TO-220W/PINS 1.5TALL"HS1513102B02500G1Aavid Thermalloy1.500x1.375in.513102B02500GFittedHeader, Male 2x10pin, 100mil spacingJ3, J6PEC10DAAN2Sullins0.100 inch x 10 x 2PEC10DAANFittedTerminal Block, 3pin, 15-A, 5.1mmJ19ED120/3DS1OST0.60 x 0.35 inchED120/3DSFittedInductor, 220uH .30A L2SMDSRR7032-221M1Bourns7x7mm220uHFittedInductor, Chip, 3.3uH L3770MA 1210 10%B82422H1332K1EPCOS Inc12103.3uHFittedMOSFET, N-CH,Q360V, 50A, TO-220ABCSD18537NKCS1Texas InstrumentsTO-220AB60VFittedRES, 300 ohm, 5%,0.1W, 0603R4CRCW0603300RJNEA1Vishay-Dale603300FittedRES, 63.4k ohm,1%, 0.1W, ES, 1.00k ohm,1%, 0.25W, 1206R13, R26, R39, RES, 121k ohm,0.1%, 0.125W, 0805R14RT0805BRD07121KL1Yageo America805121kFittedRES, 20k ohm, 5%,0.25W, 1206R15, R42CRCW120620K0JNEA2Vishay-Dale120620kFittedRES, 10.0k ohm,1%, 0.1W, 0603R16, R27CRCW060310K0FKEA2Vishay-Dale60310.0kFittedRES, 1.00k ohm,1%, 0.1W, 0603R17RC0603FR-071KL1Yageo America6031.00kFittedRES, 9.76k ohm,1%, 0.1W, 0603R18CRCW06039K76FKEA1Vishay-Dale6039.76kTIDU304 – June 2014Submit Documentation FeedbackSelf/Dual-Powered (Current or Auxiliary DC) Supply for MCCB/ACB/ProtectionRelayCopyright 2014, Texas Instruments Incorporated13
Design Fileswww.ti.comTable 11. Bill of Materials ANTITY MANUFACTURERPACKAGEREFERENCEVALUEFittedRES, 53.6k ohm,0.1%, 0.125W, 0805R19RG2012P-5362-B-T51Susumu Co Ltd80553.6kFittedRES, 10.0k ohm,1%, 0.25W, 1206R25, R28, R37CRCW120610K0FKEA3Vishay-Dale120610.0kFittedRES, 1.00Meg ohm,1%, 0.1W, 0603R40, , 10k ohm,0.01%, 0.063W,0603R41, R70, R71, R72RNCF0603TKY10K04Stackpole Electronics Inc 60310kFittedRES, 510 ohm,0.1%, 0.1W, 0603R48RG1608P-511-B-T51Susumu Co Ltd603510FittedRES, 0 ohm, 5%,0.1W, 0603R75, R78CRCW06030000Z0EA2Vishay-Dale6030FittedRES, 47k ohm, 5%,0.125W, 0805R82ERJ-6GEYJ473V1Panasonic80547kFittedTest Point, O.040HoleTP16, TP18, TP22,TP31STD4STDFittedIC, 300-mA 40-VLOW-DROPOUTREGULATOR WITH25-uA , 600mAConstant On-TimeSynchronous BuckRegulator,DDA0008BU3LM5017MRE/NOPB1Texas InstrumentsDDA0008BFittedIC, Dual DifferentialComparators, 2-36VinU5LM293AD1TISO-814Self/Dual-Powered (Current or Auxiliary DC) Supply for MCCB/ACB/ProtectionRelayCopyright 2014, Texas Instruments IncorporatedSTDTPS7A6533QKVURQ1LM293ADTIDU304 – June 2014Submit Documentation Feedback
Design Fileswww.ti.com6.3Layer PlotsTo download the layer plots for this design, see the design files at TIDA-00229.Figure 5 through Figure 10 show the layer plots for this design.NOTE: All layer plots are viewed from the top side.Figure 5. Solder Mask TopFigure 6. Solder Mask BottomFigure 7. Top LayerFigure 8. Bottom LayerTIDU304 – June 2014Submit Documentation FeedbackSelf/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments Incorporated15
Design Fileswww.ti.comFigure 9. Top Overlay6.4Figure 10. Bottom OverlayMultilayer Composite PrintsTo download the Multilayer Composite Print files, see the design files at TIDA-00229.Figure 11. Multilayer Composite Print16Self/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments IncorporatedTIDU304 – June 2014Submit Documentation Feedback
Design Fileswww.ti.com6.5Assembly DrawingsTo download the Assembly Drawings, see the design files at TIDA-00229.Figure 12. Assembly Drawing 1Figure 13. Assembly Drawing 2Figure 14. Assembly Drawing 3Figure 15. Assembly Drawing 4TIDU304 – June 2014Submit Documentation FeedbackSelf/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments Incorporated17
Design Fileswww.ti.comFigure 16. Drill Drawing6.6Gerber FilesTo download the Gerber files, see the design files at TIDA-00229.7About the AuthorKALLIKUPPA MUNIYAPPA SREENIVASA is a Systems Architect at Texas Instruments, where he isresponsible for developing reference design solutions for the industrial segment. Sreenivasa brings to thisrole his experience in high-speed digital and analog systems design. Sreenivasa earned his Bachelor ofElectronics (BE) in Electronics and communication Engineering (BE-E&C) from VTU, Mysore, India.18Self/Dual-Powered (Current or Auxiliary DC) Supply forMCCB/ACB/Protection RelayCopyright 2014, Texas Instruments IncorporatedTIDU304 – June 2014Submit Documentation Feedback
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These self-powered numerical relays have low power consumption typically, 1.4 VA at IN (of the relay). The relay can be powered from these three analog phase measuring inputs as indicated in the following list: CT input phase L1 CT input phase L2 CT input phase L3 2 Self/Dual-Powered (Current or Auxiliary DC) Supply for TIDU304 .
Table 2.1. Si8285 Truth Table IN IN- VDDA State VDDB-VMID State Desaturation State VH VL RDY FLTb H H Powered Powered Undetected Hi-Z Pull-down H H H L Powered Powered Undetected Pull-up Hi-Z H H L X Powered Powered Undetected Hi-Z Pull-down H H X X Powered Unpowered — — — L H X X Powered Powered Detected Hi-Z Pull-down. 1. H L Note:
ENUMERATING BASES OF SELF-DUAL MATROIDS Proposition 1.1. Let k be an odd positive integer. If X is an antipodally self-dual cell complex which contains an acyclic, self-dual spanning tree T0, then X gives rise to an involutively self-dual matroid. We use Proposition 1.1, Theorem 1.2 and Lemma 3.2 to obtain the following result. Theorem 1.6.
The Pecolift / Ecolift 1.5 (referred to as "the machine" in this manual) is a simple, safe and efficient alternative to step-ladders, platform/podium steps and small scaffold towers. It is the first non-powered, powered access platform. It does not require batteries (or charging) or connection to an electricity supply.
Avionics: Honeywell 6-Tube EFIS. Enrolled on Honeywell HAPP. Dual Honeywell SPZ-8400 Digital Auto Pilot Dual Honeywell FZ-820 Flight Guidance Computers Dual Honeywell NZ-2010 LR NAV/FMS w/ 6.1 Software Dual Collins VHF-422B COMM (8.33 Spacing) Dual Collins VIR-432 NAV w/ FM Immunity Dual Collins ADF-462 Dual Collins DME-442
1.2.7 Dual monitor set-up screen*9) This page is concerning the dual monitor usage. Use the dual monitor function Check here when you wish to use dual monitor function. OS management dual monitor Select whether it is OS management dual monitor or video card management dual monitor. It is
T. KODA KODAI MATH. J. 10 (1987), 335—342 SELF-DUAL AND ANTI-SELF-DUAL HERMITIAN SURFACES BY TAKASHI KODA 1. Introduction. Let (M, g) be a 4-dimensional oriented Riemannian manifold. The star operator * defined on the space of 2-forms A2M satisfies * *—id. So A2M splits into two eigenspaces as Λ2M Λ2 MQ)Λ2-M, where Λ\M and Λ2-M are the eigenspaces corresponding to eigenvalues 1 and .
self-respect, self-acceptance, self-control, self-doubt, self-deception, self-confidence, self-trust, bargaining with oneself, being one's own worst enemy, and self-denial, for example, are thought to be deeply human possibilities, yet there is no clear agreement about who or what forms the terms between which these relations hold.
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