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LEEYD TECHNICAL INSIGHTS

Technical Insights for Electrical Power Systems

Practical guides on surge protection, current measurement, electrical instruments, product selection, testing, and industrial applications.

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Latest Publications

How to Choose an Arrester Monitor for Substation Surge Arresters
2026-09-01

How to Choose an Arrester Monitor for Substation Surge Arresters

Learn how to choose an arrester monitor for substation surge arresters by voltage level, leakage current monitoring, surge counting, installation, and data requirements.

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Custom DC Shunts: What Buyers Should Confirm Before Ordering
2026-08-30

Custom DC Shunts: What Buyers Should Confirm Before Ordering

Learn what buyers should confirm before ordering custom DC shunts, including current rating, mV output, accuracy, heat, terminals, dimensions, and busbar layout.

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How to Choose a DC Current Shunt for Accurate Current Measurement
2026-08-29

How to Choose a DC Current Shunt for Accurate Current Measurement

Learn how to choose a DC current shunt by current rating, voltage drop, accuracy, mounting style, material, and application requirements.

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Surge Counter vs Arrester Monitor: Functions and Selection
2026-08-20

Surge Counter vs Arrester Monitor: Functions and Selection

Compare surge counters and arrester monitors, including discharge counting, leakage current indication, online monitoring, applications, and selection tips.

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How to Select a 10kV Lightning Arrester for Reliable Power Protection
2026-08-12

How to Select a 10kV Lightning Arrester for Reliable Power Protection

Learn how to choose a 10kV zinc oxide lightning arrester by system voltage, MCOV, discharge current, protected equipment, installation environment, and accessories.

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DC Current Shunt Applications: Requirements Across Industrial Systems
2026-08-08

DC Current Shunt Applications: Requirements Across Industrial Systems

Compare duty cycle, signal, mounting, and validation needs for DC shunts in welding, batteries, switchgear, power, and test systems.

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Custom DC Shunt RFQ Checklist: Data Buyers Must Provide
2026-08-08

Custom DC Shunt RFQ Checklist: Data Buyers Must Provide

Prepare current, mV output, accuracy, duty cycle, dimensions, testing, and quantity for a custom DC shunt RFQ. Review the checklist.

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How Does a DC Current Shunt Work? Principle, Wiring, and Output
2026-07-28

How Does a DC Current Shunt Work? Principle, Wiring, and Output

Learn how a DC current shunt converts high current into a millivolt signal, how meters read output, and why four-terminal measurement matters.

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Shunt Welding Machine Troubleshooting: 5 DC Current Checks
2026-07-24

Shunt Welding Machine Troubleshooting: 5 DC Current Checks

Troubleshoot shunt welding machine current problems by checking meter ratio, sense wiring, millivolt output, terminal heating, and EMI.

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DC Shunt Wiring Diagram: How to Wire a Shunt Safely
2026-07-24

DC Shunt Wiring Diagram: How to Wire a Shunt Safely

Correct DC shunt wiring separates the main current path from the millivolt sensing circuit. Learn how to connect current terminals, sense leads, meter polarity, and matching shunt ratings.

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