모든 전기 문서
True-RMS란 무엇일까요?
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.
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.
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.
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.
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.
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.
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?
DC services specialist deploys battery analyzer to maintain critical UPS systems
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Fluke Pro Tips
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4 things you need to know about Industrial Ethernet
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How insulated tools work
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The 7 Best Tools for Electricians in 2024
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Safety considerations when selecting a voltage tester
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Best Non-Contact Voltage Tester
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What is a non-contact voltage tester?
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Even at home, Fluke tools stay on the job
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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.
Can you live with the burden?
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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.
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.
Case study: 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.
The volt makes a stop at the Fluke metrology lab
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Four methods to conduct earth ground testing
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Run 5 essential lighting tests in 30 seconds with Fluorescent Light Tester
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Maintaining a solid ground
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Case study: Efficient Tests Keep Fluorescent Lights Shining at Commercial Complex
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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.
A million and one uses for voltage detectors
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Verifying lockout/tagout electrically safe status
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Understanding capacitive voltage sensors
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Test and measurements for electrical fire prevention
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Safety considerations for live measurements: keep your eyes on the job at hand
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Part 2: Electrical testing safety
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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.
Electricians worldwide: Most common mistakes, best practices
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Diagnosing power problems at the receptacle
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Beyond the basics: Electrical problems at a boat dock
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30 day load studies with the Fluke 1735 Power Logger
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10 ways to hurt yourself on electrical systems
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101 applications for laser distance meters
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