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Why use a CAT III rated meter in solar PV installations?

Overvoltage categories in a photovoltaic installation connected to the utility energy grid

ソーラー設備 (太陽光発電設備または PV 設備とも呼ばれる) は、電力事業スケールの太陽光発電の経済性に説得力があること、そして電力網を脱炭素化しようとする取り組みに後押しされ、急増を続けています。ソーラー配電システムと負荷が大きく複雑になるにつれ、過渡過電圧発生の可能性も増し、安全性がかつてなく重要な意味を持つようになっています。

ソーラー専用: Fluke 393 FC CAT III 1,500 V TRMS クランプ・メーター

ソーラー設備の測定を行う際に、これらの過渡事象は目に見えないため、ほとんど不可避の危険です。つまり、測定者がどれだけ保護されるかは、ツールにすでに組み込まれている安全マージンに左右されることになります。そこで測定カテゴリー定格が役に立ちます。測定カテゴリーは、測定デバイスが安全に測定できる電気設備の種類をユーザーに知らせることを目的に設計されています。

続きを読む

電気測定の基礎

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What is true-RMS?

真の実効値とは?

. . .

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Steps for measuring resistance with a digital multimeter

抵抗の測定方法

抵抗の測定方法、デジタル・マルチメーターによる抵抗の測定方法

校正

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Calibrating at the bench with a deadweight tester

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A deadweight tester is a proven method of pressure calibration that is usually chosen for bench applications when accuracy and reliability are the top . . .

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Documenting approach to pressure switch testing

Manual approach to pressure switch testing

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Breaking new ground without breaking the loop

Breaking new ground without breaking the loop

Early reports from the field suggest that the new Fluke 772 and 773 Milliamp Process Clamp Meters may be game changers, breaking new ground for technicians . . .

エネルギーマネジメント

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Top 3 Solar Panels Safety Precautions

Renewable energy: Maintenance and health of battery storage systems

Importance of investing in battery storage systems health and maintenance.

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How to Prioritize Leaks in Compressed Air System Using LeakQ

How to prioritize the leaks in your compressed air system using LeakQ

If your compressed air system is under-performing, your connected equipment will be too. Learn how to monitor and prioritize which air leaks to fix using . . .

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Best tools for energy efficiency management

Best tools for energy efficiency management

Make energy efficiency a part of your preventive maintenance plan to make a positive impact on your bottom line, improve plant performance, and maintain . . .

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Utilities

Case study: Energy logger helps cut utility surcharges and power waste

At commercial buildings and industrial plants, energy costs can quickly add up, especially when older lighting systems are in place, motors age and . . .

メインテナンス及モニタリング

安全性

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Digital multimeter CAT rating

Understanding the arc flash boundary

The arc flash boundary is the minimum “safe” distance from exposed energized conductors or circuit parts that has the potential for an arc flash. The . . .

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Electrical safety myth #1

Four myths about electrical safety that may surprise you

Following electrical safety regulations in industrial plants is critical. But myths about electrical safety are rampant. Understand the facts vs myths . . .

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How infrared cameras help you stay safe on the job

How infrared cameras help you stay safe on the job

If you troubleshoot or maintain equipment in an industrial setting, staying safe depends partly on the environment and partly on you.

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Fluke ST120+ GFCI Socket Tester with Beeper

Chasing "ghost" trips in GFCI-protected circuits

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トラブルシューティング

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Motor With Drive

13 common causes of motor failure

This article demonstrates how to detect the 13 most common causes of winding insulation and bearing failure in advance.

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Troubleshooting the Most Common Power Quality Problems

Top 5 power quality issues you can solve with the Fluke 1770 power quality analyzers

Troubleshooting the most common power quality problems—voltage distortion and harmonics. Tools needed, types of problems

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HVAC

Insulation resistance and electrical testing for HVAC compressor motors

HVACR mechanics rarely rely on a single test to pass or fail a function or process. As they walk up to a condensing unit, they listen, they wave their . . .

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Maintenance Technician in Hospital Setting

3 considerations for medical gas leak detection

Testing medical gases and piping systems in healthcare facilities and hospitals presents multiple challenges for maintenance teams. Learn why efficient . . .