精品test for electrician
Electricity Test
Name:Unit 1 PhysicsMini SAC 1 on electricity (chapter 2) Total of 27 marks A DC current of 100 mA flows in a thick copper wire.The voltage across the ends of the wire is 1.0 x 10-4 V.Question 1What is the resistance of the thick copper wire? (1 mark)Question 2R = resistorV = voltmeterA = ammeterWhich of the following circuits could be used to measure the resistance R? (1 mark)A B C DA light globe is connected as shown below. A current of 0.6 A flows as shown.Question 3(a) Find the electric potential difference between the points P and Q. Assume the wire hasnegligible resistance. (1mark)(b) Find the power dissipated by the light globe. (1 mark)It requires 6.0 x 105 joules of energy to boil a quantity of water in a particular electric kettle. The supply voltage to the element of the kettle is 240V and the current flowing through the element is 10A. Question 4What is the time taken to boil the water? (2 mark)The figure shows the graph of current versus potential difference for two electrical devices that are connected to the same circuit.Question 5Which of the devices A or B is ohmic? Justify your answer. (1 mark)Question 6What is the current of B when the voltage of A is 10V (1 mark)Question 7What is the resistance of A (1 mark)Question 8What is the resistance of B when the current is 3.0 Amps (1 mark)What is the power dissipated in B when a current of 4.0 amp flows in it? (2 mark)(Include unit in answer)A 30 watt car headlight globe has a potential difference of 12 volt across its terminals.Question 17How many joule of energy is used by each coulomb of charge flowing through the globe? (1 mark) Question 18What current flows through the globe? (1 marks)Question 19What is the resistance of the wire in the globe under these conditions? (2 mark)Question 20The current running through the globe runs for 5.5 minutes, how much charge (in coulomb) passes through the battery? (2 mark)Question 21How many electrons is this charge equivalent to? (2 mark)Question 22How much energy per electron do the electrons have each in this situation? (2 mark)Which would cost more to run, a 30W electric fan over a period of 2 days, or a 1.2kW washing machine for one hour? Justify your answer with appropriate calculations. (3 marks)Question 24An electricity company charges 12 cents per kWh for energy usage. (2 mark)Determine the cost for running the 30W electric fan over 2 days.。
Test and Maintenance of Electrical Machine
Course Name:Electrical Engineering Group. Course Code: EE/EPSemester:SixthSubject Title:Testing & Maintenance of Subject Code: 9142Electrical MachinesTeaching and Examination Scheme:Teaching Scheme Examination SchemeTH TU PR Paper Hrs TH TEST PR OR TW TOTAL03--020*******#--25@175Rationale:This is technology level subject with application in Industry, commercial, publicutility departments such as PWD, Irrigation, MSEB, water supply & sewage boardetc. After studying this subject student will be able to inspect, test, install &commission electrical machines as per IS and International standards. He/She shall carry out routine & preventive maintenance of electrical machines & possessesknowledge of Indian Electricity Act, safety rules, safety of machines & persons,prevention of accident. This will help him to initiate total productive maintenance.Objective:Student will be able to1. Know safety measures & state safety precautions2. Test single phase, three phase transformer, DC & AC machine as per IS3. Identify / Locate common troubles in electrical machines & switch gear4. Plan & carry out routine & preventive maintenance5. Install LV switchgear & maintain it.6. Ascertain the condition of insulation & revarnishing if necessary7. Initiate total productive maintenanceLearning structure:Application Procedures Principles ConceptsFactsUse the knowledge of Installation, testing & maintenance in repairing, maintaining electrical machines, apply IE acts & safety rules, maintenance charts at work places. Connecting &mounting toperform routinetest, type test, braketest. on electricalmachinesPerform Direct& Indirect test onelectricalmachines &comparison withspecificationsOperation of fireextinguishers,followingmaintenance charts& schedulesIdentification of problems,faults in Electrical machinesLaying foundation, installationof machine etcTypes ofmaintenanceOperation of various Electrical machines & equipmentssuch as Generator, motor, alternators, synchronousmachines, fire extinguishers, & transformersContents: TheoryChapter Name of the Topic Hours Marks040801 1.1 Safety & Prevention of Accidents:1.1.1 Definition of terminology used in safety; safety, hazard,accident, major accident hazard, responsibility, authority,accountability, monitoring,1.1.2 I.E. Act & statutory regulations for safety of persons &equipments working with electrical installation,Dos & don’ts for substation operators as listed in IS1.1.3 Meaning & causes of electrical accidents factors onwhich severity of shock depends,1.1.4 Procedure for rescuing the person who has received anelectric shock, methods of providing artificial respiration,1.1.5Precautions to be taken to avoid fire due to electricalreasons, operation of fire extinguishers.071202 2.1. General Introduction:2.1.1 Objectives of testing significance of I.S.S. concept oftolerance, routine tests, type tests, special tests,2.1.2 Methods of testing a) Direct, b) Indirect, c)Regenerative.2.1.3 Concept of routine, preventive & breakdownmaintenance, advantages of preventive maintenance,procedure for developing preventive maintenance schedule,Factors affecting preventive maintenance schedule.2.1.4 Introduction to total productive maintenance.050803 3.1 Testing & maintenance of rotating machines:3.1.1 Type tests, routine tests & special tests of 1 & 3 phaseInduction motors,3.1.2 Routine, Preventive, & breakdown maintenance of 1 &3 phase Induction motors as per IS 9001:19923.1.3 Parallel operation of alternators,3.1.4 Maintenance schedule of alternators & synchronousmachines as per IS 4884-19683.1.5 Brake test on DC Series motor.121804 4.1 Testing & maintenance of Transformers:4.1.1 Listing type test, routine test & special test as per I.S.2026-19814.1.2 Procedure for conducting following tests:Measurement of winding resistance, no load losses, & noload current, Impedance voltage, load losses, Insulationresistance, Induced over voltage withstand test, separatesource voltage withstand test, Impulse voltage withstandtest, Temperature rise test of oil & winding, Differentmethods of determining temp rise- back to back test, shortcircuit test, open delta (delta – delta) test.4.1.3 Preventive maintenance & routine maintenance ofdistribution transformer as per I.S. 10028(part III): 1981,4.1.4 Periodic checks for replacement of oil, silica gel,parallel operation of 1 & 3 phase transformer, load sharingcalculations (numerical)0814 05 5.1 Testing & maintenance of Insulation:5.1.1 Classification of insulating materials as per I.S.8504(part III)1994, factors affecting life of insulatingmaterials, measurement of insulation resistance &interpretation of condition of insulating. Methods ofmeasuring temperature of internal parts ofwindings/machines & applying the correction factor whenthe machine is hot.5.1.2 Properties of good transformer oil, list the agentswhich contaminates the insulating oil, understand theprocedure of following tests on oil as per I.S. 1692-1978a) acidity test b) sludge test c) crackle test e) flash pointtest. Filtration of insulating oil protection of electricalequipments (insulation) during the period of inactivity.5.1.3 Methods of cleaning the insulation covered with loose,dry dust, sticky dirt, & oily viscous films, procedure forcleaning washing & drying of insulation & revarnishing5.1.4 Methods of internal heating & vacuum impregnation.0812 06 6.1 Trouble shooting of Electrical Machines & Switchgear:6.1.1 Significance of trouble shooting of various electricalmachines and describes the procedure for the same.Internal and external causes of failure of equipment.Various types of faults (mechanical, electrical & magnetic) inelectrical machines reason for their occurrence,use of following tools: Bearing puller, Filler gauge, dialindicator, spirit level megger, earth tester, growler,multimeter,6.1.2 Trouble shooting charts for 1 & 3-phase inductionmotor, 1 & 3- phase transformer.List the common troubles in electrical installation & cables6.1.3 Maintenance & trouble shooting of LV switchgear likeMCCB, ELCB, contactors & batteries.0408 077.1 Installation:7.1.1 Factors involved in designing the machine foundation,Requirement of different dimension of foundation for static& rotating machines procedure for levelling & alignment oftwo shafts of directly & indirectly coupled drives, effects ofmisalignment. Installation of rotating machines as per I.S.900-1992.7.1.2 Use of various devices & tools in loading & unloading,lifting, carrying heavy equipment.Total4880 Practical:Skills to be developed:Intellectual skills:1. Select appropriate meters & equipment2. Recollect Testing &Maintenance procedures.Motor Skills:1. Accuracy of Measurement2. Proper connections3. Draw characteristicsList of Practicals:1) Draw circuit diagram select appropriate meters, connect it to perform routine test on single phase Induction motor2) As per the given circuit diagram perform routine test on three phase Inductionmotor, & calculate the different parameters3) Select two single phase transformers, perform polarity test, mark its terminals,select appropriate meters & perform back to back test, compare its regulation with direct loading method4) Perform parallel operation of transformer as per I.S.5) Perform parallel operation of alternator as per I.S.6) Carry out OC & SC test on Induction motor, plot circle diagram, & calculateparameters7) Perform brake test on DC series motor & plot characteristic of output againsttorque, speed, load current as per I. S. list suitable applications.B) Field work:8) Observe & carry out weekly, monthly & yearly maintenance of motor in your workshop & prepare its reportC) Mini project:9) Prepare trouble-shooting chart for single and three phase transformers10) Prepare trouble-shooting chart for single and three phase motorsLearning Resources:Books :Sr.No.Author Title Publisher01 B. L. Theraja Electrical TechnologyVol I To IV S. Chand & Co., New Delhi02 B. V. S. Rao Operation & Maintenance OfElectrical Machines Vol - I Media Promoters & Publisher Ltd. Mumbai03 B. V. S. Rao Operation & Maintenance OfElectrical Machines Vol - II Media Promoters & Publisher Ltd. Mumbai04 C.J. Hubert Preventive Maintenance HandBooks & Journals-----------。
电气电子设备型式认可试验指南
电气电子设备型式认可试验指南英文回答：Electrical and electronic equipment type approval testing guidelines are essential for ensuring the safety and reliability of these devices. These guidelines provide a framework for manufacturers to follow in order to meet the necessary requirements and obtain the necessary certifications for their products.One important aspect of these guidelines is the testing procedures that need to be conducted on the equipment. This includes various electrical and mechanical tests to evaluate the performance and durability of the devices. For example, electrical equipment may need to undergo tests such as insulation resistance, dielectric strength, and electromagnetic compatibility testing. These tests ensure that the equipment can operate safely and reliably under different conditions.In addition to the technical tests, there are also administrative requirements that need to be met. This includes submitting the necessary documentation and information about the equipment, such as technical specifications, user manuals, and test reports. These documents are important for the certification authorities to evaluate the compliance of the equipment with the relevant standards.Furthermore, the guidelines also provide information on the labeling and marking requirements for the equipment. This includes specifying the necessary information that needs to be displayed on the equipment, such as the manufacturer's name, model number, and safety symbols. These labels and markings help users to identify and use the equipment correctly, reducing the risk of accidents and injuries.Overall, the electrical and electronic equipment type approval testing guidelines play a crucial role in ensuring the safety and reliability of these devices. By following these guidelines, manufacturers can demonstrate thecompliance of their products with the necessary standards and regulations, giving consumers confidence in the quality of the equipment they purchase.中文回答：电气电子设备型式认可试验指南对于确保这些设备的安全性和可靠性至关重要。
Guidelinesfortyp...
Guidelinesfortyp...中国船级社电气电子产品型式认可试验指南Guidelines for Type Approval Test of Electric and Electronic Products2006--------------------------------------China Communications Press指导性文件GUIDANCE NOTESGD 01-2006中国船级社电气电子产品型式认可试验指南Guidelines for Type Approval Test of Electric and Electronic Products2006北京Beijing指导性文件GUIDANCE NOTES GD 01-2006目录第1章通则 (1)1.1 适用范围 (1)1.2 定义 (1)1.3 型式认可试验 (4)第2章基本试验 (8)2.1 外观检查 (8)2.2 性能试验 (8)2.3 绝缘电阻测量 (8)2.4 能源波动试验 (10)2.5 能源故障试验 (11)2.6 倾斜和摇摆试验 (11)2.7 振动试验 (12)2.8 高温试验 (13)2.9 低温试验 (14)2.10 交变湿热试验 (15)2.11 恒定湿热试验 (17)2.12 盐雾试验Kb (18)2.13 盐雾试验Ka (19)2.14 耐电压试验 (20)2.15 外壳防护试验 (21)2.16 滞燃试验 (22)第3章电磁兼容性试验 (23)3.1 一般要求 (23)3.2 传导发射测量 (24)3.3 外壳端口辐射发射测量 (26)3.4 静电放电抗扰度试验 (28)3.5 射频电磁场辐射抗扰度试验 (30)3.6 电快速瞬变脉冲群抗扰度试验 (32)3.7 浪涌抗扰度试验 (34)3.8 低频传导抗扰度试验 (36)3.9 射频场感应的传导骚扰抗扰度试验 (37)第4章航行和无线电通信设备及系统 (40)4.1 一般要求 (40)4.2 型式认可试验项目 (40)附录A 本指南引用的国际标准与相应的中国国家标准清单 (42) - -第1章通则1.1 适用范围. . 本指南适用于船舶和海上设施用下列设备的型式认可试验：― 用于控制、保护、安全和内部通信的所有设备；― 计算机及其外围设备；― 其他低压电气设备和电子设备①；― 航行设备和无线电通信设备及系统。
Electric-Electronic Components Test Specification
E-22 Overcurrents
Base on LV124
power power power power power power
or Vehicles up to 3.5 t Comment Components with 12V supply Components with 12V supply Components with 12V supply Components with 12V supply Components with 12V supply Components with 12V supply All
All components containing internal circuit protection features, such as a fuse or circuit breaker. All components with or without built-in internal overload-protected output circuits All All components with fast signal changes or rapid current changes All components directly connected to the vehicle battery
16
E-16 Ground offset 6 E-17 Short circuit in signal circuit and load circuits 6 6 6 6 6 6
17 18 19 20 21 22
E-18 E-19 E-20 E-21
Insulation resistance Closed-circuit current Dielectric strength Backfeeds
风扇安规中英文版 UL507
HB等级的塑料风轮与风轮电机外壳上开孔的距离不应小于25.4mm，如小于这一距离，需
满足以下要求： 电机外壳开孔数量小于6，且开孔直径不大于6.75mm或开孔面积不大于35.48 mm ；or HWI<=4; or 通过50章风轮燃烧测试。 注：装饰部件的材料属性不作要求。
-
UL 507 & CSA C22.2 No. 113:
UL746C:
Leakage-Current Test Starting Current Test Input Test/ Rating
Temperature Test
Dielectric Voltage Withstand Test/ Dielectric Strength Humidity Conditioning Test Strain Relief Test #
10
Section 2 – Electrical Construction
Internal Wiring
1、需适当保护，通过外壳开孔，允许被测试手指触及，但不允许被钩拉；
2、内部导线的布线应远离运动部件及带锐利边缘的部件，以防绝缘损伤。若穿过壁厚小于1.07mm的金 属开孔时，该金属开孔需作折边处理或在开孔处增加壁厚为1.2mm的套管，如下图：
6
Section 1 – Mechanical Construction
Strain Relief（抗拉装置）
为电源线提供适当的抗推拉及旋转保护，有以下等类型：
注：金属压线装置不能单独和SPT-1, SPT-2, SVT, SVTO 线型使用，需增加额外的保护，如套管。
Cautionary Marking 1、所有警语须英、法双语； 2、根据不同的产品，可能会用到以下警语：Use only 125-Volt Fuse, 2.5 Amp Max； Cord Tag Marking： 产品使用SPT-2-R电源线时须提供以下内容线标：
Test circuit for electrical switching device
专利名称：Test circuit for electrical switching device 发明人：Mark E. Innes申请号：US08/557587申请日：19951114公开号：US05691871A公开日：19971125专利内容由知识产权出版社提供摘要：A motor starter for an electrical circuit including a power source and a load, includes an electrical contactor having separable contacts for switching an electrical current flowing between the power source and the load, and an operating mechanism responsive to a trip signal for opening and closing the separable contacts; a current sensor for sensing the electrical current flowing between the power source and the load and providing a sensed current value therefrom; and an overload relay including a microcomputer routine for generating the trip signal as a function of a trip current value and at least one of: (a) a test current value, and (b) the sensed current value; and a test routine including at least one of: (a) a first selecting mechanism including a routine for selecting a first predetermined value as the trip current value and a routine for selecting the test current value for use by the microcomputer routine with the trip current value, and (b) a second selecting mechanism for selecting one of at least one second predetermined value, which is different from the first predetermined value, as the trip current value for use by the microcomputer routine with the sensed current value.申请人：EATON CORPORATION代理人：Larry G. Vande Zande更多信息请下载全文后查看。
电力变压器试验导则英文
电力变压器试验导则英文Here are some paragraphs written in informal English to provide guidelines for electrical transformer testing:When it's time for transformer testing, it's always crucial to be thorough and careful. Just remember, safetyis our priority. Before anything, check that the transformer is properly isolated from power sources and the surrounding environment is free from potential hazards.Once safety measures are taken, it's all about getting into the details. Make sure to go through all the components of the transformer windings, cooling systems, taps and conduct the necessary inspections. Visual inspections can often reveal potential issues before they become bigger problems.Testing the transformer's electrical performance is where the real work begins. We need to perform a series of tests like insulation resistance, turn ratio, and shortcircuit impedance to ensure it's working as intended. These tests might sound complicated, but they're essential to ensure the transformer's reliability.After electrical tests, it's important to evaluate the transformer's thermal behavior. Running the transformer at various loads helps us understand how it responds todifferent operating conditions. Remember to keep track of the temperatures and look for any abnormal rises.Lastly, don't forget to document everything! Detailed test reports are crucial for future reference and troubleshooting. Make sure to include all the test results, observations, and any issues encountered during the process. It'll save us a lot of time and effort in the long run.Remember, transformer testing is a complex but crucial part of our job. With proper care and attention, we can ensure the transformers are safe, reliable, and ready to handle whatever the grid throws at them.。
3a节能认证测试英语
3a节能认证测试英语Energy-saving certification testing in English encompasses a wide range of procedures and standards aimedat evaluating the energy efficiency of products and systems. The certification process typically involves testing the energy consumption, performance, and environmental impactof a product or system to ensure that it meets specified energy efficiency criteria. This can include testing for electrical appliances, HVAC systems, lighting products, and other energy-consuming devices.The testing process for energy-saving certification involves various aspects such as measuring energy consumption under different operating conditions, assessing the overall performance and durability of the product, and evaluating its compliance with relevant energy efficiency standards and regulations. The tests are conducted in accordance with internationally recognized testingprotocols and standards, such as those established by organizations like the International ElectrotechnicalCommission (IEC), the American National Standards Institute (ANSI), and the European Committee for Electrotechnical Standardization (CENELEC).Furthermore, the testing may also involve environmental impact assessments to determine the product's overall sustainability and its potential for reducing carbon emissions and other pollutants. This can include evaluating the product's use of recycled materials, its energy-saving features, and its potential for reducing overall energy consumption in real-world applications.In addition to the technical aspects, the certification testing process also involves documentation andverification of the product's compliance with energy efficiency standards. This may include providing detailed test reports, technical specifications, and other relevant documentation to demonstrate the product's energy-saving capabilities.Overall, energy-saving certification testing in English is a comprehensive process that aims to ensure thatproducts and systems meet stringent energy efficiency criteria, thereby contributing to energy conservation and environmental sustainability on a global scale.。
electrical related chip stability test report
electrical related chip stability test report Electrical Chip Stability Test Report1. Test Purpose:The purpose of this test is to evaluate the stability of electrical chips under various conditions. This report covers the testing procedures, results, and conclusions to assess the reliability and performance of the chips.2. Test Scope:The test scope includes a range of electrical chips, including microcontrollers, power management ICs, communication chips, and other related components.3. Test Environment:•Temperature Range: -40°C to +85°C•Humidity Range: 20% to 90% RH•Voltage Range: 2.5V to 5.5V•Frequency Range: 100MHz to 1GHz4. Test Procedures:The test procedures included the following steps:•Initialization: The chips were powered on and initialized according to the manufacturer's specifications.•Thermal Cycling: The chips were subjected to thermal cycling to simulate extreme temperature conditions.•Humidity Testing: The chips were exposed to varying humidity levels to assess their resistance to moisture.•Voltage Stress Testing: The chips were subjected to higher than normal voltage levels to test their tolerance to electrical stress.•Frequency Sweep Testing: The chips were tested at various frequencies to evaluate their performance across a wide range of clock speeds.5. Test Results:The test results are summarized below:•Thermal Cycling: All chips performed within specifications, with no failures or malfunctions observed.•Humidity Testing: No significant changes in chip performance were observed under varying humidity conditions.•Voltage Stress Testing: Some chips exhibited minor performance degradation at higher voltage levels, but no permanent damage was observed.•Frequency Sweep Testing: The chips performed as expected across the tested frequency range, with no significant performance degradation observed.6. Conclusion:Based on the test results, the electrical chips evaluated in this report demonstrated good stability under various conditions. While some minor performancedegradation was observed under extreme conditions, no permanent damage or failures were reported. Overall, the chips are considered reliable and suitable for their intended applications.7. Recommendations:•Further testing is recommended to evaluate the long-term stability and durability of the chips.•Manufacturers should consider improving the voltage tolerance of the chips to enhance their reliability under electrical stress conditions.•Additional testing under extreme environmental conditions may be beneficial to assess the chips' performance in harsh environments.8. Appendices:•Test Setup Images•Raw Data Files•Test Logs and RecordsPlease note that this is a generic template for an electrical chip stability test report.The actual report may vary depending on the specific chips, testing procedures, and results obtained.。
电气部分QUAYTEST_ELECTRICALPART
电气部分QUAYTEST_ELECTRICALPARTEMERALD 37 37,200DWT DOUBLE-SKIN BULK CARRIER施工设计PRODUCTION DESIGN版本REV. 数量TOTAL修改单号MODIFICATION NO.签字SIGN日期DATE系泊试验大纲Quay test（电气Electrical part）编制 DSN.版本REV. 重量WIGHT(T) 比列SCALE 校对 DWN.审核 CHKD. 共 21页第 1 页标检 RVE.标检 CHKD.OF.STD审定 APP.1 总则 General (3)2 主发电机 Main diesel generator....................................... .33 应急发电机 Emergency generator....................................... .74 主配电板 Main switchboard (MSB) (9)5 应急配电板 Emergency switchboard (11)6 分电箱效用试验 Power distribution box function test (12)7 充放电板效用试验 Battery charger panel function test (13)8.主要和重要电动机和控制器 Essential & important motors and the controllers (13)9. 厨房洗衣机及其他电力设备 (14)10 照明设备 Lighting equipment (14)11 报警系统Alarm system (16)12 火警检测和报警系统Fire detection and alarm system (18)13 主推进系统遥控试验Main propulsion system remote control system (18)14 内部通讯设备Internal communication equipment (18)15 导航设备Navigation equipment (19)16 无线电设备Radio equipments (20)1. 总则 General1.1试验应在船级社验船师及船东代表参加的情况下进行。
Electric luxury sedan Lucid Air tested
Electric luxury sedan Lucid Air tested The Lucid Air, an electric luxury sedan, has been making waves in the automobile industry as it promises to deliver an unparalleled driving experience. Recently, the car has been put to the test, and the results are nothing short of impressive.Firstly, the Lucid Air boasts an impressive range of up to 517 miles on a single charge, making it one of the most energy-efficient vehicles on the market. This is a significant milestone for electric vehicles, as range anxiety has been a significant concern for many drivers. With the Lucid Air, drivers can travel long distances without worrying about running out of battery.Moreover, the Lucid Air's performance is equally impressive. Thevehicle can accelerate from 0 to 60 mph in just 2.5 seconds, making it oneof the fastest electric cars in the world. The car's top speed is also impressive, with a maximum speed of 168 mph. The car's handling is also noteworthy, with precise steering and excellent grip.The Lucid Air's interior is equally impressive, with luxuriousmaterials and a futuristic design. The car's spacious cabin provides ample legroom and headroom, making it comfortable for even the tallest passengers. The car's infotainment system is also top-notch, with a large touchscreen display that is easy to navigate.From an environmental perspective, the Lucid Air is a game-changer. The vehicle produces zero emissions, making it an eco-friendly option for those looking to reduce their carbon footprint. Additionally, the car's batteries are recyclable, making it a sustainable option for the future.Overall, the Lucid Air is a revolutionary vehicle that has set a new standard for electric cars. The car's impressive range, performance, and luxurious interior make it a top contender in the luxury car market. Thecar's eco-friendly features and sustainability also make it a responsiblechoice for the environmentally conscious. The Lucid Air is a testament to the future of electric vehicles and is sure to leave a lasting impression on the automobile industry.。
电气试验英文[最新]
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电气试验英文电气试验英语词汇 hhb,2006-05-20 09:40:101、电气间隙爬电距离测定Measuring of clearance and creepage distance2、工频耐压试验Test of power-frequency withstand voltag3、额定冲击耐受电压试验Test of rated impulse withstand voltage4、绝缘电阻测定Measuring of insulating resistance5、漏电电流测定Measuring of leakage current6、保护特性试验Protective characteristic test7、三相动作特性试验Test of three-phase operating characteristic8、断相动作特性试验Test of phase failure operating characteristic9、重复定位精度试验Test of repeated accuracy of positioning10、触头换接时间试验Test of time of transfer contact11、保护电路有效性试验Test of effectiveness of protective circuit12、温升试验Temperature- rise test13、耗散功率测定Measuring of dissipation power14、额定运行短路分断能力试验Test of rated service short-circuit breaking capacity15、额定运行极限分断Test of rated service limiting breaking capacity16、额定短时耐受电流试验Test of rated short-time withstand current17、带熔断器的断路器的性能试验Test of performance of integrally-fused circuit-breaker18、辅助触头的操作性能试验Test of operating performance of auxiliary contact19、辅助触头的非正常接通与分断能力试验Test of abnormal making and breaking capacities of auxiliary contact20、辅助触头的正常接通与分断能力试验Test of normal making and breaking capacities of auxiliary contact21、辅助触头的额定限制短路电流试验Test of rated conditional short-circuit current of auxiliary contact22、临界负载电流试验Test of critical load current23、耐湿热性能试验Test of resistance to damp-heat24、传导射频发射试验Test for conducted radiofrequency emissions25、辐射射频（RF）发射试验Test for radiated radiofrequency emissions26、静电放电干扰性试验Tests for immunity to electrostatic discharges27、射频电磁场试验Tests for radiated radiofrequency electromagnetic field 28、快速瞬变（5/50ns）抗干扰性试验Tests for immunity to electrical fast transients (5/50ns)29、浪涌（1.2/50Us～8/20Us）抗干扰性试验Surge immunity tests (1.2/50Us~8/20Us)30、电压瞬时跌落和短时中断抗干扰性试验Test for immunity to voltage dips and short-time interruptions31、弹性部件的耐老化试验Verification of ageing of elastic components32、耐热性能的试验Test of resistance to heat33、着火危险试验Resistance to abnormal heat and fire34、抗锈性能试验Resistance to rusting35、绝缘材料相比漏电起痕指数（CTI）值测定Measuring of comparative tracking indices (CTI) of solid insulating materials36、外壳试验Test of degree of protection provided by enclosure (IP11~IP68) 37、耐撞击试验Resistance to mechanical impact38、高、低温试验High or low temperature test39、安装螺丝和螺母的机械强度试验Test of mechanical strength of screw and nut for mounting40、振动试验Vibration test41、冲击试验Shock test42、机械寿命和电寿命试验Mechanical and electrical durability test43、“SCPD”配合“q”“r”电流试验Co-ordination with SCPD,q,r current tests44、噪音测定Measuring of noise45、剩余电流动作特性试验Verification of the operating characteristic of residual current46、在40℃时的可靠性试验Verification of reliability at 40°C47、防电击保护试验Protection against electric shock48、电子元件老化试验Verification of ageing of electronic components49、验证插拔力试验Verification of the force of inserting and pulling out50、验证软电缆固定装置的保持力试验Verification of the holding force of fixing means for flexible cable--------------------------------------------------------------------------------hhb,2006-05-20 09:41:1251、不可拆线的PRCD的弯曲试验Flexion test for non-rewirable PRCD52、不可拆线插头插座的电气强度试验Electric strength test for non-rewirable plug andsocket-outlet53、时间—电流特性、门限试验Verification of time-current characteristics and gates54、I2t特性及过电流选择性试验Verification of I2t characteristics and over-currentdiscrimination55、耐应力腐蚀龟裂试验Verification of freedom from season cracking56、电阻电抗与阻抗测定Measuring of resistance , reactance and impedance57、耐腐蚀和老化能力试验Verification of resistance to corrosion and ageing58、耐静力试验Verification of resistance to static load59、耐扭力试验Verification of resistance to torsional stress60、门的机械强度试验Verification of mechanical strength of doors61、对角状物机械撞击耐受能力试验Verification of resistance to mechanical shock impacts induced by sharp-edged objects62、盐雾试验Test of salt spray63、低气压试验Test of low air pressure64、电力电网中的低频骚扰抗扰度试验Immunity tests regarding low-frequency disturbances in power supply networks（1）. 由谐波引起的非正弦电流的试验Tests regarding non-sinusoidal currents resulting from harmonics(2). 有关电流暂降和分断的试验Test regarding current dips and interruptions65、热冲击试验Thermal shock test66、电热丝点燃试验Hot wire ignition test67、电弧引燃试验Arc ignition test68、熔断器触头不变坏试验Test of non-deterioration of contacts of fuses69、关断和转换能力试验Blocking and commutating capability test70、过载性能试验Test of overload performance--------------------------------------------------------------------------------hhb,2006-05-20 09:41:3651、不可拆线的PRCD的弯曲试验Flexion test for non-rewirable PRCD52、不可拆线插头插座的电气强度试验Electric strength test for non-rewirable plug and socket-outlet53、时间—电流特性、门限试验Verification of time-current characteristics and gates54、I2t特性及过电流选择性试验Verification of I2t characteristics and over-current discrimination55、耐应力腐蚀龟裂试验Verification of freedom from season cracking56、电阻电抗与阻抗测定Measuring of resistance , reactance and impedance57、耐腐蚀和老化能力试验Verification of resistance to corrosion and ageing58、耐静力试验Verification of resistance to static load59、耐扭力试验Verification of resistance to torsional stress60、门的机械强度试验Verification of mechanical strength of doors61、对角状物机械撞击耐受能力试验Verification of resistance to mechanical shock impacts induced by sharp-edged objects62、盐雾试验Test of salt spray63、低气压试验Test of low air pressure64、电力电网中的低频骚扰抗扰度试验Immunity tests regarding low-frequency disturbances in power supply networks（1）. 由谐波引起的非正弦电流的试验Tests regarding non-sinusoidal currents resulting from harmonics(2). 有关电流暂降和分断的试验Test regarding current dips and interruptions65、热冲击试验Thermal shock test66、电热丝点燃试验Hot wire ignition test67、电弧引燃试验Arc ignition test68、熔断器触头不变坏试验Test of non-deterioration of contacts of fuses69、关断和转换能力试验Blocking and commutating capability test70、过载性能试验Test of overload performance。
Electric luxury sedan Polestar tested
Electric luxury sedan Polestar testedI recently had the opportunity to test drive the electric luxury sedan Polestar, and I must say, I was thoroughly impressed with the overall experience. The Polestar is a sleek and stylish car that not only looks great but also performs exceptionally well on the road. From its luxurious interior to its powerful electric engine, there are many aspects of this car that make it a standout in the luxury sedan market. First and foremost, the design of the Polestar is truly striking. The exterior is modern and sophisticated, with clean lines and a minimalist aesthetic that exudes elegance. The interior is equally impressive, with high-quality materials and a thoughtful layout that prioritizes both comfort and functionality. The attention to detail in the design of the Polestar is evident, and it truly sets this car apart from others in its class. In terms of performance, the Polestar does not disappoint. The electric engine delivers an impressive amount of power, allowing the car to accelerate quickly and handle with precision. The driving experience is smooth and quiet, and the car feels incredibly responsive on the road. Additionally, the Polestar offers an impressive range on a single charge, making it a practical choice for dailydriving as well as longer trips. One of the most appealing aspects of the Polestar is its commitment to sustainability. As an all-electric vehicle, the Polestar produces zero emissions, making it an environmentally friendly choice for drivers who are conscious of their carbon footprint. The car is also designed with sustainable materials and production methods in mind, further solidifying its position as a leader in eco-friendly luxury vehicles. From a technology standpoint, the Polestar is equipped with a wide range of features that make driving both safer and more enjoyable. The car is outfitted with advanced driver assistance systems, including adaptive cruise control and lane-keeping assist, as well as a user-friendly infotainment system that integrates seamlessly with smartphones. These features not only enhance the driving experience but also prioritize safety, which is always a top priority for any vehicle. In conclusion, the Polestar is a truly impressive electric luxury sedan that excels in design, performance, sustainability, and technology. It offers a driving experience that is both exhilarating and environmentally conscious, making it a standout choicefor anyone in the market for a luxury vehicle. I was thoroughly impressed with my time behind the wheel of the Polestar, and I would highly recommend it to anyone looking for a top-of-the-line electric sedan.。
【实用文档】electric engineer test paper
一、一般问答题1、请列举你前任公司的工作职责。
2、你对公司有什么贡献？有哪些工作表现？举例说明。
3、工作中遇到哪些困难？如何克服？4、你所遇到的最难相处的人是谁？而你又是如何应付的呢？5、你所工作的公司有哪些好的一面？哪些方面值得改善？你愿意在什么样的工作环境中工作？6、你的哪些技能可以胜任工程师这个职位？7、你的事业理想与目标是什么？你准备如何实现？一、专业知识测试题：1、请列出你熟悉的几种PLC型号，列出几个常用的编程指令，并编写一段时钟程序。
2、请列出你熟悉的集成电路型号名称（5-10个）。
3、何谓“PID”调节？请阐释其意义，并说明应用场合及调试的一般方法。
4、何谓“零点漂移”？请解释其意义，并说明解决方法。
5、请设计一台30KW马达的Y—Δ起动控制电路（注意所用电器元件的型号、规格）6、206轴承所配的轴径公称直径为多少？选用配合公差。
（载荷为一般轻载）7、攻M8的普通粗牙螺纹应选多大的钻头钻孔？8、请列举几种常用机械的润滑方式。
齿轮箱一般采用何种润滑方式？二、英泽汉1、Second cooling process(atmospheric cooling)From the time of less than 5%water level in the first cooling water discharging, the second feed water(fresh water)is carried out by the second cooling pump”P2”. At 30%water level,, second water discharging valve V9 is opened and “P3”is “On” for a period of the second water discharge timer to return water to the recovery tank in order to cool the products temperature.From the time of 80% water level, “P3”is “On” for a period of the second circulating timer with circulation valve (V8) opened to circulate water, thus reducing the dispersion of the products temperatures. After the circulation time is up, (V9) is used for the second water discharge to the recovery tank. At 5% water level or below, water discharging valve (V6) and steam drain valve (V13) are opened for a period of finish timer to discharge drain in the retort. After finish timer is up, clutch is opened to elevate the door and safety pin is inserted. Thus, the retort process finishes, followed by transfer.。
电气试验(中英文)
电气试验Electric Test1.电气试验常规要求General Requirements1)电气预防性的试验严格按规范、产品说明书要求执行。
Electric preventive test shall be carried out in accordance with criterion and product specification strictly.2)组合式微机保护及监控继电器按产品说明书进行整定。
Adjust combined micro-computer protection and monitoring relay3)常规的电磁式继电器调试按《新编保护继电器检验》中有关规定进行调试。
The normal electromagnetic relay commissioning shall comply with the stipulations of New Protection Relay Test.4)盘(柜)指示电表经校验后，对合格的电表粘贴专用合格证。
After calibration of the panel (cabinet) indicative ammeter, paste special quality certificateon the qualified ammeter.5)高压开关柜的传动试验在各电气元件及单体柜调试后进行。
传动试验时，认真核对各回路的准确及可靠性。
主要传动试验项目：High pressure switchboard transmission test shall be carried out after electrical element and individual cabinet commissioning. Check the loops accuracy and liability during transmission test. The main transmission project：操作控制回路传动试验；Operation Control Loop Transmission Test保护回路传动试验；Loop Protection Transmission Test测量/计量回路试验；Measure/Recording Loop Test系统低电压、断线保护试验；System Low Pressure, Cable break protection test核对一、二次相位；Check 1st and 2nd phase2.变压器试验Transformer Test1)测量绕组连同套管的直流电阻，测量应在各分接头所有位置上进行；Measure winding and sleeve DC resistance of all the connection joints.2)对1600kV A 及以下三相变压器，各相测得值的相互差值应小于平均值的4%，线间测得值的相互差值应小于平均值的2%；1600kVA 以上的三相变压器，各相测得值的相互差值应小于平均值的2%，线间测得值的相互差值应小于平均值的1%；1600kVA 以上的三相变压器，各相测得值的相互差值应小于平均值的2%，线间测得值的相互差值应小于平均值的1%；(重复) 三相电阻不平衡率计算Three Phase Transformer of 1600Kva and the less, the measured value ’s difference shall be 4% less than the average, internal lines measured value shall be 2% less than the average. Three Phase Transformer of above 1600kV A, the measured value ’s difference shall be 2% less than the average, internal lines measured value shall be 1% less than the average, Three Phase resistanceUnbalance Rate calculation formula:Measured Max-MinUnbalanced Rate=100%Average3)直阻测量方法：DC Resistance Measure Method用感性负载速测欧姆计测量绕组直流电阻时，其接线及测量方法应符合测试仪器的技术要求。
测试电路英语作文
测试电路英语作文Title: Testing Circuits: Ensuring Performance and Reliability。
Testing circuits is an indispensable aspect of electronic engineering, critical for ensuring the functionality, performance, and reliability of electronic devices. In this essay, we will delve into the significance of testing circuits, various testing methods employed, and the importance of thorough testing in the design and manufacturing processes.First and foremost, testing circuits is essential to verify that they meet the required specifications and perform as intended. Whether it's a simple electrical circuit or a complex integrated system, thorough testing is necessary to identify and rectify any flaws or discrepancies before the product reaches the end-user. Failure to detect and address issues during the testing phase can lead to costly recalls, compromised safety, anddamage to the reputation of the manufacturer.There are several testing methods employed in the evaluation of electronic circuits, each serving a specific purpose and providing unique insights into the circuit's performance. One common testing method is functional testing, which involves verifying whether the circuit operates according to its intended function. This type of testing assesses the behavior of the circuit under normal operating conditions and is typically performed using simulation software or specialized testing equipment.Another crucial testing method is stress testing, which evaluates the circuit's performance under extreme conditions such as high temperatures, voltage fluctuations, or environmental factors. Stress testing helps identify potential weak points in the circuit design and ensures its resilience in real-world scenarios. Additionally, environmental testing is conducted to assess the circuit's reliability and durability under various environmental conditions, including temperature extremes, humidity, vibration, and shock.In addition to functional, stress, and environmental testing, there are specialized techniques such as boundary scan testing, in-circuit testing, and automated test equipment (ATE) that facilitate comprehensive evaluation of electronic circuits. Boundary scan testing, for instance, allows for the examination of individual components on a circuit board by accessing their boundary scan registers. In-circuit testing involves the use of probes to test components while they are still mounted on the circuit board, enabling rapid identification of faults. Automated test equipment automates the testing process, increasing efficiency and accuracy while reducing human error.The significance of thorough testing in the design and manufacturing processes cannot be overstated. Byidentifying and rectifying issues early in the development cycle, testing helps minimize time-to-market, reduce manufacturing costs, and enhance the overall quality of the product. Moreover, rigorous testing ensures compliance with industry standards and regulations, safeguarding against potential liabilities and ensuring customer satisfaction.In conclusion, testing circuits is a critical aspect of electronic engineering, essential for verifying performance, functionality, and reliability. Through various testing methods such as functional testing, stress testing, and environmental testing, electronic circuits undergo comprehensive evaluation to ensure they meet the required specifications and perform optimally under all conditions. By prioritizing thorough testing in the design and manufacturing processes, engineers can mitigate risks, enhance product quality, and deliver reliable electronic devices to consumers worldwide.。
Luxury-electric-crossover-Jaguar-I-PACE-tested
Luxury electric crossover Jaguar I-PACEtestedThe luxury electric crossover Jaguar I-PACE has been making waves in the automotive industry, and it's no wonder why. With its sleek design, impressive performance, and cutting-edge technology, this vehicle has certainly caught the attention of car enthusiasts and environmental advocates alike. As the demand for electric vehicles continues to grow, the Jaguar I-PACE has been put to the test to see if it lives up to the hype. One of the most appealing aspects of the Jaguar I-PACE is its design. The crossover's bold and modern aesthetic sets it apart from other electric vehicles on the market. Its aerodynamic shape not only contributes to its striking appearance but also enhances its overall efficiency. The interior is equally impressive, with luxurious materials and advanced technology creating a truly premium driving experience. From the moment you set foot inside the Jaguar I-PACE, it's clear that this is a vehicle designed for those who appreciate the finer things in life. When it comes to performance, the Jaguar I-PACE certainly doesn't disappoint. With dual electric motors delivering instant torque and all-wheel drive capabilities, this crossover offers a thrilling driving experience. The I-PACE can go from 0 to 60 mph in just 4.5 seconds, putting it on par with many high-performance gasoline-powered vehicles. Its regenerative braking system also helps to maximize efficiency, allowing drivers to go further on a single charge. The I-PACE's range is also noteworthy, with the ability to travel up to 234 miles on a full battery. This makes it a practical option for daily commuting as well as longer road trips. In addition to its impressive performance, the Jaguar I-PACE is equipped with a range of advanced technology features. The Touch Pro Duo infotainment system is a standout, offering a seamless and intuitive user experience. The system includes a 10-inch upper touchscreen and a 5.5-inch lower touchscreen, providing access to navigation, entertainment, and vehicle settings. The I-PACE also comes with a suite of driver assistance features, such as adaptive cruise control, lane keep assist, and a 360-degree camera system, making it not only a pleasure to drive but also a safe and reliable option for everyday use. Of course, one of the most compelling reasons to consider the Jaguar I-PACE is itsenvironmental impact. As a fully electric vehicle, the I-PACE produces zero tailpipe emissions, making it a cleaner and more sustainable choice compared to traditional gasoline-powered cars. With the increasing concern over climate change and air pollution, the shift towards electric vehicles has become more important than ever. The Jaguar I-PACE is a shining example of how luxury and performance can coexist with environmental responsibility. In conclusion, the Jaguar I-PACE has proven itself to be a top contender in the luxury electric crossover market. Its combination of stunning design, impressive performance, advanced technology, and environmental consciousness make it a standout option for those in the market for a premium electric vehicle. As the automotive industry continues to evolve, the Jaguar I-PACE is a clear example of the exciting future that lies ahead for electric vehicles. Whether you're a car enthusiast, an environmental advocate, or simply someone looking for a stylish and high-performing vehicle, the Jaguar I-PACE is certainly worth considering.。