모든 전기 문서
같은 전선에 걸려있는 두 개의 클램프 미터[Clamp Meter]. 두 미터가 같은 전류치를 나타내어야 두 개의 다른 값을 각각 나타낼 때, 어느 값이 진짜일까? 두 개의 미터는 기능상으로 전혀 문제가 없으며, 공장에서의 자체 시험을 통과한 제품이다. 단지 두 제품의 차이는 내부의 계측 방법이다. 하나는 True RMS 계측 방식이며, 또 다른 미터는 평균치 계산을 통한 RMS 계측 방식이거나 기본파 성분 계산을 통한 RMS 계측 방식이다. 이러한 차이를 이해하기 위해서는 RMS가 무엇을 의미하는지 이해할 필요가 있다.
Diagnosing power problems at the receptacle
These three measurements, all taken quickly at one outlet, provide you with a solid understanding of the building's electrical supply.
What is a non-contact voltage tester?
When troubleshooting failed assets, the first tool you’ll reach for is a non-contact voltage detector, also known as a voltage tester. These pocket-sized detectors immediately identify the presence of voltage.
Four methods to conduct earth ground testing
Earth ground testing increases the reliability of equipment performance and reduces safety risk. Why testing is needed, what's a good ground, testing methods.
최대 사용 및 안정성을 위한 백업 배터리 시스템 유지 관리
예비 배터리 백업 시스템은 전력 중단 시 필수 운영 기능을 유지하는 데 중요한 역할을 합니다. 오늘날의 UPS 시스템에 사용되는 대부분의 배터리는 유지보수가 필요 없지만 부식, 내부 단락, 황산화, 고갈 및 밀봉 실패로 인한 열화에 여전히 취약합니다.
What's in your toolbox? Yuengling Tampa Brewery
From Electric Fish, Two Kinds of Current
Electric fish, like knifefish, produce electrical signals used for sensing where they and their schoolmates are. Electric eels produce, in addition, more powerful currents for hunting and defense.
Efficient Tests Keep Fluorescent Lights Shining at Commercial Complex
Troubleshooting lights goes from minutes to seconds when using Fluke 1000FLT Light Tester for testing fluorescent light fixtures in a commercial complex
DC services specialist deploys battery analyzer to maintain critical UPS systems
Many services offered by ERS involve maintaining uninterruptible power supply (UPS) systems.
절연 수공구가 중요한 이유
절연된 전기 공구는 안전에 매우 중요합니다.
Part 1: 전기 테스트 안전 - 전압 테스트 부재에 대한 준비
전기 장비 또는 시스템을 전기적으로 안전한 작업 조건에 배치하는 것은 간단해 보이지만 고려해야 할 몇 가지 요소가 있습니다.
상업용, 산업용 및 주거용 건물의 접지 전극 임피던스 점검
대부분의 시설은 전기 시스템이 접지되어 있어 낙뢰나 전기 설비의 과전압 사고가 발생해도 전류가 안전하게 접지로 흐릅니다. 접지 전극은 전기 시스템과 접지 사이의 접점을 제공합니다.
기술자가 전기를 측정할 때 가장 흔히 저지르는 10가지 실수
직업적으로 전기 작업을 하는 모든 사람은 가능성이 크지 않더라도 "전기가 흐를 수 있는" 모든 것에 주의를 기울여야 합니다. 그러나 작업을 정시에 완료해야 하거나 업무에 중요한 장비를 복구해야 한다는 압박을 받게 되면 아무리 숙련된 전기 기술자라도 부주의해지거나 평소답지 않은 실수를 할 수 있습니다.
전기 안전에 대한 잘못된 네 가지 통념
시설 안전은 단순히 체크리스트만 확인하는 작업이 아닙니다. 경영진부터 일선 근로자에 이르기까지 모든 직원이 운영의 모든 측면에서 안전 문화를 유지하겠다는 약속이 필요합니다. 시간이 지나면서 특정 안전 표준에 대한 해석이 원래 의도와 달라져 안전 요구 사항을 가장 잘 충족시키는 방법에 대한 몇 가지 잘못된 통념이 생겼습니다.
Fluke 500 시리즈 배터리 분석기는 정확성과 안전성을 높이고 테스트 시간을 단축합니다.
CAT III 등급 Fluke 배터리 분석기는 직관적인 인터페이스, 지능형 프로브, 가청 신호로 정확성, 안전성, 효율성을 향상시킵니다.
Ensuring electrical circuit protection without nuisance tripping
Whether commercial, institutional, municipal, or industrial, sooner or later, nearly every facility will experience some type of overcurrent situation. Unless they're dealt with promptly, even modest overcurrent levels can cause system components to overheat and damage insulation, conductors, and equipment.
Fluke 87V 디지털 멀티미터 vs Fluke 87V MAX 멀티미터
IP 등급, 배터리 수명 및 기타 기능을 비교해보세요. Fluke 87V MAX와 87V 디지털 멀티미터의 차이점은 무엇일까요?
Best Non-Contact Voltage Tester
A guide to choosing the best electrical and voltage tester from Fluke for your needs. Built for electricians, maintenance managers, facility technicians and homeowners, learn about which voltage detectors in the Fluke VoltAlert line are right for you.
Fluke Pro Tips
Fluke experts get to the heart of your maintenance and measurement questions with tips and tricks—in less than a minute.
Troubleshooting and collaborating in real time
Fluke Connect for real-time troubleshooting and collaboration; technicians and managers can view same measurement data on smart phones at same time from virtually anywhere.
Maintaining a solid ground
Properly grounding a facility's electrical system ensures a low impedance connection from the electrical system to the earth. However, the effectiveness of the earth ground depends on several factors.
7 essential tools for electricians
We recently asked electricians what they considered their top 5 essential tools—there were a few ties, so we’re sharing their top 7.
Can you really test electrical bonds adequately using a multimeter?
An active electrical system may have present many small currents and voltages, both dc and ac, as a result of leakages, unbalances, etc. Unfortunately, any residual dc in a system may cause a dmm resistance reading to be higher or lower than its actual value.
How insulated tools work
Insulated hand tools provide critical safety protection for electricians and technicians who work with live electrical equipment.
Safety considerations when selecting a voltage tester
How safe is that voltage tester? Learn about the differences between solenoid and digital voltage testers, and how they impact your safety.
4 things you need to know about Industrial Ethernet
An overview of the four main Industrial Ethernet protocols including modbus TPC/IP, EtherCAT, Ethernet/IP, PROFINET. How these communication networks differ from the commercial Ethernet LAN environment.
Can you live with the burden?
One of the realities of electrical testing is that you can't measure something without changing it in some way.
9 Things You’ll Love About the Fluke T6 Electrical Tester
Why choose the Fluke T6 Electrical tester? Read 9 things to love about the first electrical tester that performs AC current, AC voltage and frequency up to 1000 V AC without test leads.
Common Terminology and Abbreviations for DMM Products
Top 10 Changes to 2018 NFPA 70E Safety Standards for Electricians
With the recent release of the 2018 edition of the NFPA 70E standard, many users are finding it challenging to interpret what it says and prioritize where they should focus their attention. The short answer is that the entire 70E standard is important; not just one chapter, article or section.
The volt makes a stop at the Fluke metrology lab
Ensuring a dc volt is the same wherever you go and on whatever device you own is the job of national and international standards organizations with an assist from private industry.
Even at home, Fluke tools stay on the job
When Fluke tool users head for home, they know the workday is far from done. Customers describe how they use their industrial-strength Fluke test tools around the house.
Using the 87V DMM diode-test on LEDs
Using the 87V DMM diode-test on LEDs
Run 5 essential lighting tests in 30 seconds with Fluorescent Light Tester
Test fluorescent lamp, ballast, pin continuity, voltage, and ballast-type in 30 seconds with the new Fluke 1000FLT fluorescent light tester
Verifying lockout/tagout electrically safe status
Lockout/Tagout procedures specify the steps electricians must follow to remove power from an electrical circuit or panel, and to lock out and tag the panel or circuit, so that no one can re-energize it while work is in progress.
A million and one uses for voltage detectors
Voltage detectors are a quick, inexpensive way to check for the presence of live voltage on ac circuits, switches and outlets before working on them. Also known as voltage wands, sticks, "power sniffers" or pens, they clip into a shirt pocket and beep or glow when they detect voltage on exposed conducting parts or through insulation.
Understanding capacitive voltage sensors
The capacitive voltage sensor works because when you hold the barrel in your hand and place the tip near a live conductor, you are inserting the high impedance sensing element into a capacitively coupled series circuit. As your hand and body form a relatively large capacitor coupled to the floor. The sensor tip is a small capacitor coupled to the live voltage. The sensing circuit detects the voltage and turns on a light or sounds the buzzer.
Part 2: Electrical testing safety
If you find a circuit that shows voltage when there should be none, be careful what you do next. Creating an arc is unsafe and could get you fired or much worse. Be safe. Determine whether the voltage is induced by nearby, energized cables or if it is being backfed from an unknown source.
Safety considerations for live measurements: keep your eyes on the job at hand
Measuring live voltages and current in today's high energy environments can result in a severe hazard to equipment and users if proper precautions are not applied. Given the risk of transients, surges, and old-fashioned human error, it always pays to follow safe work practices and use test instruments rated for the voltage or current you're measuring.
Test and measurements for electrical fire prevention
For the most part industrial and commercial electrical systems are getting safer and more reliable. The U.S. Fire Administration's most recent report, analyzing data from 2001, estimates that 8.7% of the nation's 47,785 non-residential fires were caused by electrical distribution equipment. That's 32% fewer than in 1998.
Electricians worldwide: Most common mistakes, best practices
Electricity is a force of nature, the same around the world.So it's probably no surprise that electricians and maintenance techs from Canada to Australia and Pakistan to the Philippines share many of the same experiences, and learn the same lessons - and sometimes learn them the hard way.
Back to basics: Pre-emptive troubleshooting and testing of class 2 and 3 alarm circuits
HSI Security Systems installs, maintains and monitors electronic life-safety systems throughout Northwest Oregon and Southwest Washington. We're an electrical contractor that specializes in low voltage systems and rudimentary electrical controls.
Beyond the basics: Electrical problems at a boat dock
Among the many tools offered by Fluke for testing ac circuits is the model 360 AC Leakage Clamp Meter. This meter can measure up to 60 amps ac in normal use,
101 applications for laser distance meters
The Fluke 416D and 411D laser distance meters measure distance to a target up to 60 m (200 ft) away using the unit's laser spot, and can do a quick calculation of area (square feet/meters) and volume. Accuracy is up to 1.5 mm (1/16 in).
10 ways to hurt yourself on electrical systems
Perhaps you've been an electrician for a while. Or maybe you're just starting out. No matter how much experience you have, it's always good to spend a few minutes thinking about how to end the day in the same shape as you started it—without any injuries.
30 day load studies with the Fluke 1735 Power Logger
To determine the existing equipment's capacity, factor in the incoming conductor size, the ratings of the equipment, and space for new circuits. To determine present loading, you'll need to either precisely calculate the existing loads, or measure them.