Overview: IEC 61010-1 and Measuring Circuit Compliance
IEC 61010-1 is the fundamental safety standard for electrical equipment used in measurement, control, and laboratory settings. Compliance involves rigorous design to protect users from electric shock, fire, mechanical hazards, and other risks during normal and fault conditions. Measuring circuits must be designed to meet requirements for insulation, spacing, transient protection, and categorization of measurement environments (CAT I–IV). This includes appropriate use of isolation barriers, creepage distances, and touch current limitations, especially in high-voltage or industrial environments.
Here’s a detailed review of research and industry guidance on designing and evaluating measuring circuits that comply with IEC 61010-1:
Key Papers and Documents
1. Sheehan, C. (n.d.). Selecting the Right Sense Resistor for Motor Control with Reinforced Isolation. Bourns.
• Discusses reinforced isolation techniques and the use of sense resistors in motor drive circuits to ensure IEC 61010-1 compliance.
2. Marwat, S. (2014). Digital Isolators Compliance to IEC 61010-1 Safety Requirements. Texas Instruments.
• Explores the role of digital isolators in meeting safety insulation and creepage/clearance requirements under the standard.
3. Lohbeck, D. (2003). Safety Design and Certification for Test and Measurement Products. NI.
• Detailed guidance on certification procedures, insulation coordination, and testing under IEC 61010-1.
4. Piotrowski, N. (2014). Why 500VA for Hipot Testers? IEEE Symposium.
• Investigates the 500 VA dielectric withstand requirement in the 3rd edition of IEC 61010-1.
5. McGuire, J., & Perkins, P. (2021). Touch Current from DC Products: Exploring the Landscape.
• Assesses touch current measurements and compliance using IEC 60990 networks, in relation to 61010-1.
6. Perkins, P. (2021). Normal, Abnormal & Fault Conditions Rationalized for Proper Protection.
• Rationalizes testing under various operating and fault conditions to ensure protective compliance.
7. Wang, X., et al. (2008). Test Technology Based on IEC Standards for Electrical Safety. SPIE.
• Reviews FPGA-based testing systems to validate IEC 61010-1 compliance in measurement instruments.
8. Bartolomei, L. (2021). Development and Metrological Characterization of Measuring Instruments for Low-Voltage Networks.
• A doctoral thesis focusing on the development of compliant monitoring devices.
9. De Santis, V., et al. (2017). Fractional-order Circuit Models for Compliance Testing. Elsevier.
• Models human body impedance to evaluate compliance with IEC 61010-1 and IEC 60990 for touch currents.
10. Kara, S., et al. (2011). Electricity Metering in Manufacturing Systems. Springer.
• Covers IEC 61010-1-compliant energy monitoring systems in industrial applications.
These resources offer a robust framework for engineers and designers to create compliant measuring circuits for various environments. They cover component-level design, test setup, certification, and system-level integration.
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