DOCSLIB.ORG

Electrical Blasting Cap

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Electrical Blasting Cap electrical blasting cap electrical blasting cap [ENG] A blasting cap ig- electrical prospecting [ENG] The use of down- nited by electric current and not by a spark. hole electrical logs to obtain subsurface informa- { əlekиtrəиkəl blastиiŋkap } tion for geological analysis. { ilekиtrəиkəl pra¨s electrical breakdown See breakdown. { əlekиtrəи pekиtiŋ } kəl bra¯kdau˙ n} electrical resistance See resistance. { ilekиtrəиkəl electrical conductance See conductance. { əlekи rizisиtəns } trəиkəlkəndəkиtəns } electrical-resistance meter See resistance meter. electrical conduction See conduction. { əlekиtrəи {ilekиtrəиkəlrizisиtəns me¯dиər} kəlkəndəkиshən} electrical-resistance strain gage [ENG] A vibra- electrical conductivity See conductivity. { əlekи tion-measuring device consisting of a grid of fine trəиkəl ka¨ndəktivиədиe¯ } wire cemented to the vibrating object to measure electrical drainage [ELEC] Diversion of electric fluctuating strains. { ilekиtrəиkəlrizisиtəns currents from subterranean pipes to prevent stra¯n ga¯j} electrolytic corrosion. { ilekиtrəиkəl dra¯nиij } electrical-resistance thermometer See resistance electrical engineer [ENG] An engineer whose thermometer. { ilekиtrəиkəlrizisиtəns thər training includes a degree in electrical engi- ma¨mиədиər} neering from an accredited college or university electrical resistivity [ELEC] The electrical (or who has comparable knowledge and experi- resistance offered by a material to the flow of ence), to prepare him or her for dealing with current, times the cross-sectional area of current the generation, transmission, and utilization of flow and per unit length of current path; the electric energy. { ilekиtrəиkəl enиjənir } reciprocal of the conductivity. Also known as electrical engineering [ENG] Engineering that resistivity; specific resistance. { ilekиtrəиkəl re¯и deals with practical applications involving cur- zistivиədиe¯ } rent flow through conductors, as in motors and electrical resistor See resistor. { ilekиtrəиkəlri generators. { ilekиtrəиkəl enиjənirиiŋ } zisиtər} electrical fault See fault. { ilekиtrəиkəl fo˙ lt } electrical symbol [ELEC] A simple geometrical electrical image [ENG] An image that is ob- symbol used to represent a component of a cir- tained in the course of borehole logging and is cuit in a schematic circuit diagram. { ilekиtrəи based on electrical rather than optical contrasts. kəl simиbəl} {i¦lekиtrəиkəl imиij } electrical transcription See transcription. { ilekи electrical impedance Also known as impedance. trəиkəl tranzkripиshən} [ELEC] 1. The total opposition that a circuit pre- electrical unit [ELEC] A standard in terms of sents to an alternating current, equal to the com- which some electrical quantity is evaluated. plex ratio of the voltage to the current in complex {ilekиtrəиkəl yu¨ иnət} notation. Also known as complex impedance. electrical weighing system [ENG] An instru- 2. The ratio of the maximum voltage in an alter- ment which weighs an object by measuring the nating-current circuit to the maximum current; change in resistance caused by the elastic defor- equal to the magnitude of the quantity in the mation of a mechanical element loaded with the first definition. { ilekиtrəиkəlimpe¯dиəns } object. { ilekиtrəиkəl wa¯иiŋsisиtəm} electrical insulator See insulator. { ilekиtrəиkəl electrical well logging See electrical logging. inиsəla¯dиər} {ilekиtrəиkəl wel la¨gиiŋ } electrical loading See loading. { ilekиtrəиkəl electric arc [ELEC] A discharge of electricity lo¯ dиiŋ } through a gas, normally characterized by a volt- electrical log [ENG] Recorded measurement of age drop approximately equal to the ionization the conductivities and resistivities down the potential of the gas. Also known as arc. length of uncased borehole; gives a complete {i¦lekиtrik a¨rk } record of the formations penetrated. { ilekиtrəи electric battery See battery. { i¦lekиtrik badиəиre¯ } kəl la¨g} electric boiler [MECH ENG] A steam generator electrical logging [ENG] The recording in un- using electric energy, in immersion, resistor, or cased sections of a borehole of the conductivi- electrode elements, as the source of heat. ties and resistivities of the penetrated forma- { i¦lekиtrik bo˙ ilиər} tions; used for geological correlations of the electric brake [MECH ENG] An actuator in strata and evaluation of possibly productive hori- which the actuating force is supplied by current zons. Also known as electrical well logging. flowing through a solenoid, or through an elec- {ilekиtrəиkəl la¨gиiŋ } tromagnet which is thereby attracted to disks on electrically suspended gyro [ENG] A gyroscope the rotating member, actuating the brake shoes; in which the main rotating element is suspended this force is counteracted by the force of a com- by an electromagnetic or an electrostatic field. pression spring. Also known as electromag- {ilekиtrəиkle¯ səspenиdəd jı¯иro¯ } netic brake. { i¦lekиtrik bra¯k} electrical pressure transducer See pressure trans- electric bridge See bridge. { i¦lekиtrik brij } ducer. { ilekиtrəиkəl preshиər tranzdu¨ иsər} electric car [MECH ENG] An automotive vehicle electrical properties [ELEC] Properties of a that is propelled by one or more electric motors substance which determine its response to an powered by a special rechargeable electric bat- electric field, such as its dielectric constant or tery rather than by an internal combustion en- conductivity. { ilekиtrəиkəl pra¨pиərdиe¯z } gine. { ilekиtrik ka¨r} 188 Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. electric ignition electric cell [ELEC] 1. A single unit of a primary or more lengths of wire energized with high-volt- or secondary battery that converts chemical en- age, low-current pulses, and giving a warning ergy into electric energy. 2. A single unit of a shock when touched. { i¦lekиtrik fens } device that converts radiant energy into electric electric field [ELEC] 1. One of the fundamental energy, such as a nuclear, solar, or photovoltaic fields in nature, causing a charged body to be cell. { i¦lekиtrik sel } attracted to or repelled by other charged bodies; electric charge See charge. { i¦lekиtrik cha¨rj } associated with an electromagnetic wave or a electric circuit [ELEC] Also known as circuit. changing magnetic field. 2. Specifically, the 1. A path or group of interconnected paths capa- electric force per unit test charge. { i¦lekиtrik ble of carrying electric currents. 2. An arrange- fe¯ld } ment of one or more complete, closed paths for electric-field intensity See electric-field vector. electron flow. { i¦lekиtrik sərиkət} {i¦lekиtrik ¦fe¯ld intenиsədиe¯ } electric coil See coil. { i¦lekиtrik ko˙ il } electric-field strength See electric-field vector. electric conductor See conductor. { i¦lekиtrik {i¦lekиtrik ¦fe¯ld streŋkth } kəndəkиtər} electric-field vector [ELEC] The force on a sta- electric connection [ELEC] A direct wire path tionary positive charge per unit charge at a point for current between two points in a circuit. in an electric field. Designated E. Also known {i¦lekиtrik kənekиshən} as electric-field intensity; electric-field strength; electric connector [ELEC] A device that joins electric vector. { i¦lekиtrik ¦fe¯ld vekиtər} electric conductors mechanically and electrically electric flowmeter [ELEC] Fluid-flow measure- to other conductors and to the terminals of appa- ment device relying on an inductance or imped- ratus and equipment. { i¦lekиtrik kənekиtər} ance bridge or on electrical-resistance rod ele- electric contact [ELEC] A physical contact that ments to sense flow-rate variations. { i¦lekиtrik permits current flow between conducting parts. flo¯ me¯dиər} Also known as contact. { i¦lekиtrik ka¨ntakt } electric flux [ELEC] 1. The integral over a sur- electric contactor See contactor. { i¦lekиtrik ka¨n face of the component of the electric displace- takиtər } ment perpendicular to the surface; equal to the electric coupling [MECH ENG] Magnetic-field number of electric lines of force crossing the coupling between the shafts of a driver and a surface. 2. The electric lines of force in a region. driven machine. { i¦lekиtrik kəpиliŋ } {i¦lekиtrik fləks } electric current density See current density. electric flux density See electric displacement. {i¦lekиtrik ¦kəиrənt denиsədиe¯ } {i¦lekиtrik fləks denиsədиe¯ } electric current meter See ammeter. { i¦lekиtrik electric flux line See electric line of force. { i¦lekи ¦kəиrənt me¯dиər} trik fləks lı¯n} electric desalting [CHEM ENG] A process to re- electric furnace [ENG] A furnace which uses move impurities such as inorganic salts from electricity as a source of heat. { i¦lekиtrik fərи crude oil by settling out in an electrostatic field. nəs} {i¦lekиtrik de¯so˙ ltиiŋ } electric fuse See fuse. { i¦lekиtrik fyu¨ z} electric detonator [ENG] A detonator ignited by electric guitar [ENG ACOUS] A guitar in which a fuse wire which serves to touch off the primer. a contact microphone placed under the strings {i¦lekиtrik detиəna¯dиər } picks up the acoustic vibrations for amplification electric dipole [ELEC] A localized distribution and for reproduction by a loudspeaker. { i¦lekи of positive and negative electricity, without net trik gəta¨r} charge, whose mean positions of positive and electric hammer [MECH ENG] An electric-pow- negative charges do not coincide. { i¦lekиtrik ered hammer; often used for riveting or caulking. dı¯po¯ l} {i¦lekиtrik hamиər} electric dipole moment [ELEC] A quantity char- electric heating [ENG] Any method of con- acteristic of a charge distribution, equal to the verting
Load more

Recommended publications
  • Navy Electricity and Electronics Training Series
    NONRESIDENT TRAINING COURSE SEPTEMBER 1998 Navy Electricity and Electronics Training Series Module 7—Introduction to Solid-State Devices and Power Supplies NAVEDTRA 14179 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Although the words “he,” “him,” and “his” are used sparingly in this course to enhance communication, they are not intended to be gender driven or to affront or discriminate against anyone. DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. PREFACE By enrolling in this self-study course, you have demonstrated a desire to improve yourself and the Navy. Remember, however, this self-study course is only one part of the total Navy training program. Practical experience, schools, selected reading, and your desire to succeed are also necessary to successfully round out a fully meaningful training program. COURSE OVERVIEW: To introduce the student to the subject of Solid-State Devices and Power Supplies who needs such a background in accomplishing daily work and/or in preparing for further study. THE COURSE: This self-study course is organized into subject matter areas, each containing learning objectives to help you determine what you should learn along with text and illustrations to help you understand the information. The subject matter reflects day-to-day requirements and experiences of personnel in the rating or skill area. It also reflects guidance provided by Enlisted Community Managers (ECMs) and other senior personnel, technical references, instructions, etc., and either the occupational or naval standards, which are listed in the Manual of Navy Enlisted Manpower Personnel Classifications and Occupational Standards, NAVPERS 18068. THE QUESTIONS: The questions that appear in this course are designed to help you understand the material in the text.
    [Show full text]
  • Equivalent Circuit of Unsymmetrical Inductance Diode Using Linvill Lumped Model
    Scholars' Mine Masters Theses Student Theses and Dissertations 1965 Equivalent circuit of unsymmetrical inductance diode using Linvill lumped model Donald Lawrence Willyard Follow this and additional works at: https://scholarsmine.mst.edu/masters_theses Part of the Electrical and Computer Engineering Commons Department: Recommended Citation Willyard, Donald Lawrence, "Equivalent circuit of unsymmetrical inductance diode using Linvill lumped model" (1965). Masters Theses. 5235. https://scholarsmine.mst.edu/masters_theses/5235 This thesis is brought to you by Scholars' Mine, a service of the Missouri S&T Library and Learning Resources. This work is protected by U. S. Copyright Law. Unauthorized use including reproduction for redistribution requires the permission of the copyright holder. For more information, please contact [email protected]. EQUIV ALBNT CJ.RCUIT OF UNSYMMETRICAL INDUCTANCE DIODE USDJG LINVJLL LUMPED MODEL BY AP'/ r· ol~'- t'\.)J} - / OONALD L~ vJILLYARD J V~ ~~ :;> A THESIS submitted to the faculty of the UNIVERSITY OF MISSOURI AT ROLLA in partial fulfillment of the requirements for the ~gree of 1-W3TER OF SCIENCE IN ELECTRICAL ENGINEERING Rolla, Missouri 1965 Approved By ~/}/)/~~) ~~ ii ABSTRACT Integrated circuit techniques and applications are rapidJ.y changing the electronics industry. A problem common to both state­ of-the-art approaches to integrated circuit fabrication is that of miniaturizing and intGgrating inductors. It is found that, for a certain range of injection current levels, certain unsymmetrically doped junction diodes have an inductive small-signal impedance. This thesis discusses the theor,y of inductance diodes and applies finite difference equations and the Linvill lumped model to the differential equations that describe their carrier nov.r processes.
    [Show full text]
  • FAA Advisory Circular AC 91-74B
    U.S. Department Advisory of Transportation Federal Aviation Administration Circular Subject: Pilot Guide: Flight in Icing Conditions Date:10/8/15 AC No: 91-74B Initiated by: AFS-800 Change: This advisory circular (AC) contains updated and additional information for the pilots of airplanes under Title 14 of the Code of Federal Regulations (14 CFR) parts 91, 121, 125, and 135. The purpose of this AC is to provide pilots with a convenient reference guide on the principal factors related to flight in icing conditions and the location of additional information in related publications. As a result of these updates and consolidating of information, AC 91-74A, Pilot Guide: Flight in Icing Conditions, dated December 31, 2007, and AC 91-51A, Effect of Icing on Aircraft Control and Airplane Deice and Anti-Ice Systems, dated July 19, 1996, are cancelled. This AC does not authorize deviations from established company procedures or regulatory requirements. John Barbagallo Deputy Director, Flight Standards Service 10/8/15 AC 91-74B CONTENTS Paragraph Page CHAPTER 1. INTRODUCTION 1-1. Purpose ..............................................................................................................................1 1-2. Cancellation ......................................................................................................................1 1-3. Definitions.........................................................................................................................1 1-4. Discussion .........................................................................................................................6
    [Show full text]
  • 02-04-00024 Equipment Deep Freezer Compressor 10 Model
    02-04-00024 Equipment Deep freezer Compressor 10 model : RSN4-0100-CAV , copeland R502 , V 220 , PH : 1 Compressor 12 model : 1553 89J13 CAJ2446L R502 , V 220 , 50HZ , 4.3 A , tecumseh Compressor 4 model : 8340 S/N 50198 compressor 1/2 HP 4 model : JFP1-0050-JAV B/M 220 N6-535 copland R500 R500 (Frion) 40kg Timer 6 Robertshaw controls co. motor 3 W ,220 V , 50 HZ SW. 1-4 1/3 HP 120/240 VAC SW. 1-2 15A Res. 120VAC Relay 6 184-20302-101 18A , 277 VAC , Coil 208 /240 V 50HZ 02-04-00025 EQUIPMENT: MOTOR CONTROL CENTER FOR OIL & WATER TREATMENT PUMPS COMPANY\MANUFACTURER: SIEMENS - West Germany QUANTITY: 12 SITE: SADDAM MEDICAL CITY\ SERVICE BUILDING CONTACTOR SIZE 4.3 POLE , AC3 3TB4814-OAMO 24 37KW , 380VAC 220V CONTACTOR SIZE 3,3 POLE , AC3 3TB4614-OAMO 24 22KW , 380VAC 220V CONTACTOR SIZE 3,3 POLE , AC3 3TB4617-OAMO 24 22KW , 380VAC 220V CONACTOR SIZE 2,3 POLE , AC3 3TB4417-OAMO 24 15KW , 380VAC 220V CONTACTOR SIZE 1,3 POLE , AC3 3TB4217-OAMO 24 7.5KW , 380VAC 220V CONTACTOR SIZE 0,3 POLE , AC3 3TB4617-OAMO 24 4KW , 380VAC 220V THERMAL DELAYED OVERLOAD 3UA6200-3L 24 RELAY 135 TO 160A THERMAL DELAYED OVERLOAD 3UA6200-2W 24 RELAY 63 TO 90A THERMAL DELAYED RELAY 40 TO 3UA5800-2T 24 57A THERMAL DELAYED OVERLOAD 3UA5800-2F 24 RELAY 32 TO 50A THERMAL DELAYED OVERLOAD 3UA5800-2D 24 RELAY 20 TO 32A THERMAL DELAYED OVERLOAD 3UA5200-2C 24 RELAY 16 TO 25A THERMAL DELAYED OVERLOAD 3UA5000-1K 24 RELAY 8 TO 12.5A UNDER VOLTAGE RELAY AA9943.11 24 220V,380V,50HZ UNDER VOLTAGE RELAY 220 V, A1936.00 24 50HZ STAR-DELTA TIME RELAY 2-20 SEC 7PU6040-7NN20 24
    [Show full text]
  • Automatic Gain Control of Transistor Amplifiers
    Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis Collection 1955 Automatic gain control of transistor amplifiers Bryan, William L. http://hdl.handle.net/10945/13960 M«nl«ey, California AUTOMATIC GAIN CONTROL OF TRANSISTOR AMPLIFIERS William L* Bxyan 1^ AUTOMATIC GAIN CONTROL OF TRANSISTOR AMPLIFIERS by William Littell Bryan Lieutenant, United States Navy Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN ENGINEERING ELECTRONICS United States Naval Postgraduate School Monterey, California 19 5 5 Tlicsls " •'-'»i;;.;„;'"''"^"'«j This work is accepted as fulfilling the thesis requirements for the degree of * MASTER OF SCIENCE IN ENGINEERING ELECTRONICS from th« United States Naval Postgraduate School PREFACE The rapid progress made in the field of semiconduc- tors since the invention of the transistor seven years ago has widely broadened our theoretical knowledge in the field and greatly increased the potentialities of these devices. Particularly our increasing ability to manxifac- ture reproducible transistors has brought us to the point of designing circuits for specific application to tran- sistors, not just to illustrate the application but rathei* •ngineered to rigid specifications. This paper treats Just such a design, that of obtaining automatic gain control of a transistor amplifier. There has been as yet little published about this difficult problem, and much of the work here presented is believed to be original* The majority of the experimental work connected with this thesis was performed during the author's Industrial Experience Tour while at Lenkurt Electric Company, San Carlos, California, and he is indebted to them for their cooperation and assistance.
    [Show full text]
  • Low Noise Dual Gate Enhancement Mode MOSFET with Quantum Valve in the Channel
    Proceedings of the World Congress on Electrical Engineering and Computer Systems and Science (EECSS 2015) Barcelona, Spain, July 13-14, 2015 Paper No. 153 Low Noise Dual Gate Enhancement Mode MOSFET with Quantum Valve in the Channel Sam Halilov, Anass Dahany, Sam Mil’shtein University Ave 1, University of Massachusetts Department of Electrical and Computer Engineering Lowell, MA 01854, USA Abstract- A proposed Si-based series multi-gate E-MOSFET is discussed in terms of its design, static and dynamic transport properties and noise figure. In its simplest realization, the design involves two gates in series comprising an extra n(p)-doped junction in the p(n)-channel. The role of the nano-scale junction is twofold: to minimize the Miller effect in the enhancement mode to improve the frequency response and to create a quantum well to quench the current noise associated with the carrier velocity fluctuations. While dual-gate depletion structure results in a reduced carrier transition time along the entire channel path, the quantization effects serve as a current noise filter. Similar quantum valve can be realized in the form of a well both in n- and p-channel enhancement mode FET, whereas the majority carriers experience a tunneling through a similar shape barrier. Doping concentration and size of the middle junction are free parameters and can be adjusted to the required figures of merit. AC device simulations confirm the expectations based on the along-the-channel potential profile: enhanced cutoff frequency and higher saturation current are the signatures of the reduced transition and RC-time, whereas the minimum noise figure and transfer functions demonstrate noise filtering capabilities of the state quantization.
    [Show full text]
  • Applying Precision Switches
    MICRO SWITCH General Technical Bulletin No. 14 APPLYING PRECISION SWITCHES General Technical Bulletin #14 - Applying Precision Switches TABLE OF CONTENTS INTRODUCTION......................................................................................................................................................................1 BRIEF HISTORY OF THE PRECISION SWITCH ..............................................................................................................1 I. THE MECHANICAL CHARACTERISTICS OF A PRECISION SWITCH...................................................................5 A. MECHANICAL ACTION AND TERMINOLOGY..........................................................................................................................5 B. THE RELATION BETWEEN PLUNGER FORCE AND PLUNGER POSITION....................................................................................6 C. THE RELATION BETWEEN CONTACT FORCE AND PLUNGER POSITION....................................................................................8 D. CONTACT BOUNCE AND TRANSIT TIME................................................................................................................................9 E. POLES, THROWS AND BREAKS............................................................................................................................................10 II. THE ELECTRICAL CHARACTERISTICS OF A PRECISION SWITCH................................................................11 A. THE RESISTANCE OF AN OPEN SWITCH...............................................................................................................................11
    [Show full text]
  • List of Spare Part2 March2020.Xlsx
    Spares Parts List for HDD Operations # WD item code Item Description Part # Item Group PN1 Quantity PN2 Quantity 1 1010005 Fiber Optic Sensor FR505 Sensor 0 11 2 1010006 Fiber Optic Sensor FR5FC Sensor 0 25 3 1010009 Fiber Optic Sensor FT505 Sensor 0 18 4 1010013 Fiber Optic Amplifier F5N Sensor 0 36 5 1010015 Hall Effect Position Sensor RP1 Sensor #N/A 7 6 1010016 Hall Effect Position Sensor RP2 Sensor 0 7 7 1010018 Photoelectric Switch E32-CC200 Sensor 0 5 8 1010019 Fiber Optic Sensor E32-D33 Sensor 0 13 9 1010021 Proximity Sensor GTR1SN Sensor 0 20 10 1010026 Proximity Switch CS9HA Sensor 0 45 11 1010036 Proximity Switch OPB 830W55 Sensor #N/A 7 12 1010037 Proximity Switch D-A53 Sensor 0 22 13 1010038 Proximity Switch GL-12F Sensor 0 12 14 1010043 Proximity Sensor PM-T53 Sensor 0 19 15 1010061 Photoelectric Switch E3JK-DS30M2 Sensor #N/A 17 16 1010063 Photoelectric Switch E3R-5DE4 Sensor #N/A 29 17 1010076 Proximity Switch RS 105L 90/8 Sensor #N/A 13 18 1010077 Proximity Switch RS 105L Sensor 0 38 19 1010080 Proximity Switch 650800-030 Sensor #N/A 10 20 1010087 Proximity Switch CS11TA Sensor #N/A 23 21 1010089 Proximity Switch CS4HA Sensor #N/A 28 22 1010093 Proximity Switch D-H7BA Sensor 0 37 23 1010099 Sensor Amplifier E3X-A11 Sensor 0 10 24 1010103 Proximity Sensor GTL1SN Sensor 0 20 25 1010113 Photoelectric Switch E3S-BD61 Sensor 0 7 26 1010117 Proximity Switch EE-SPY412 Sensor 0 100 27 1010118 Proximity Switch EE-SV3 Sensor 0 28 28 1010119 Proximity Switch EE-SY671 Sensor 0 45 29 1010121 Proximity Switch OPB 665T Sensor #N/A 18
    [Show full text]
  • Switching Operator's Manual Distribution Switching
    Switching Operator’s Manual Distribution Switching Document Number: 5011675 SECTION ONE Introduction: Distribution Switching Table of Contents 1. Introduction: Distribution Switching ...................................................... 1-1 1.1 Purpose .............................................................................................. 1-1 1.2 Content .............................................................................................. 1-1 1.2.1 Manual One .................................................................................... 1-1 1.2.2 Manual Two .................................................................................... 1-3 1.3 Switching Operator Authorisation Levels ............................................ 1-3 i Switching Operator's Manual One List of Figures No table of figures entries found. List of Tables No table of figures entries found. ii 1. Introduction: Distribution Switching 1.1 Purpose Manual One provides the switching operator with information on the distribution network configuration, apparatus and switching operations. The manual covers the Horizon Power distribution networks associated with the microgrid and Pilbara Grid systems. Manual Two provides the switching operator with information on the transmission network configuration, apparatus and switching operations. This manual covers the transmission network associated with the Pilbara Grid. Both manuals are intended to be used as a resource for all switching operators and also a major resource for the training modules in
    [Show full text]
  • Overload Protection
    Overload Protection Before discussing specific control components, it is necessary to review what an overload is and what steps can be taken to limit the damage an overload can cause. Current and Temperature Current flow in a conductor always generates heat due to resistance. The greater the current flow, the hotter the conductor. Excess heat is damaging to electrical components. For that reason, conductors have a rated continuous current carrying capacity or ampacity. Overcurrent protection devices are used to protect conductors from excessive current flow. Thermal overload relays are designed to protect the conductors (windings) in a motor. These protective devices are designed to keep the flow of current in a circuit at a safe level to prevent the circuit conductors from overheating. 22 Excessive current is referred to as overcurrent. The National Electrical Code® defines overcurrent as any current in excess of the rated current of equipment or the ampacity of a conductor. It may result from overload, short circuit, or ground fault (Article 100-definitions). Short Circuits When two bare conductors touch, a short circuit occurs. When a short circuit occurs, resistance drops to almost zero. Short- circuit current can be thousands of times higher than normal operating current. Ohm’s Law demonstrates the relationship of current, voltage, and resistance. For example, a 240 volt motor with 24 ohms of resistance would normally draw 10 amps of current. When a short circuit develops, resistance drops. If resistance drops to 24 milliohms, current will be 10,000 amps. The heat generated by this current will cause extensive damage to connected equipment and conductors.
    [Show full text]
  • COLD WEATHER OPERATIONS COLD WEATHER COLD OPERATIONS WEATHER Getting to Grips With
    getting to grips with COLD WEATHER OPERATIONS COLD WEATHER COLD OPERATIONS WEATHER getting to grips with AIRBUS INDUSTRIE 01 / 00 Flight Operations Support - Customer Services Directorate Getting to grips with COLD WEATHER OPERATIONS A Flight Operations View AIRBUS INDUSTRIE FOREWORD The purpose of this document is to provide Airbus operators with an understanding of Airbus aircraft operations in cold weather conditions, and address such aspects as aircraft contamination, performance on contaminated runways, fuel freezing limitations and altimeter corrections. This brochure summarizes information contained in several Airbus Industrie documents and provides related recommendations. At the end of each chapter, a summary of main information to be remembered is highlighted and grouped together in the overview chapter. Should any deviation appear between the information provided in this brochure and that published in the applicable AFM, MMEL, FCOM, AMM, the latter shall prevail at all times All readers are encouraged to submit their questions and suggestions, regarding this document, to the following address: AIRBUS INDUSTRIE Flight Operations Support Customer Services Directorate 1, Rond Point Maurice Bellonte, BP 33 31707 BLAGNAC Cedex - FRANCE TELEX: AIRBU 530526F SITA: TLSBI7X Telefax: 33 5 61 93 29 68 or 33 5 61 93 44 65 AI/ST-F 945.9843/99 3 4 TABLE OF CONTENTS Foreword Overview Useful information in Airbus Industrie documentation Glossary / Definitions Abbreviations A. AIRCRAFT CONTAMINATION IN FLIGHT A1 Icing principles A1.1 Atmospheric
    [Show full text]
  • RED LASER MODULES Plastic Nuts and Rubber O-Ring
    LIQUID SENSORS THROUGH-BEAM PHOTO- ELECTRIC SENSOR PAIR FLUID PRESSURE SENSOR Using a 5 Vdc input, the fluid SICK Optics WS15-D1130 / WE15-A1130. pressure sensor provides a Photo-electric sender and receiver 0.25 - 4 Vdc output proportional pair detects the presence to pressure from 0-5" H2O max. of an object when the Typical applications include beam between the two is duct air flow, filter pressure interrupted. When the monitoring, combustion air flow and gaseous beam is broken, the leak detection. Measures 1-5/16" x 17/32" on a receiver produces a current pair of 7/8" long slotted mounting wings. Two that can be used to trigger 3/16" O.D. barbs. 3-pin connector with 3" wire an audio-visual signal or leads for power and output. relay-operated device. CAT # FLS-4 $3.15 each 5 Meter range. Built-in LED alignment and power indicators. Modules are 38 x 21 x LIQUID LEVEL SENSOR 16.2mm and can be front or side-mounted. Float switch closes circuit when float Front-mount hardware is included. Operate on rises to top of switch (end opposite 10-30Vdc. Power supply not included. cULus. leads). Can be used in opposite CAT # OSU-1130 $11.35 pair direction as well to close circuit when water level drops. 0.96" diameter plastic float and 0.35" threaded bushing with RED LASER MODULES plastic nuts and rubber O-ring. 2.64" overall length. 14" pigtail leads. Class IIIA lasers, ≤5mW CAT # FLW-2 $3.35 each Wavelegth: 650mM, red 3-5Vdc operation, < 40mA FLOAT SWITCH WITH INTEGRATED THERMISTOR LASER DIODE Gems Sensors.
    [Show full text]