IEC 61010: Drawings and Critical Components

17 Aug 2026

The Importance of Building Documentation Alongside the Design

Meeting IEC 61010 documentation requirements is one thing, but getting through an evaluation efficiently is another.

In theory if your product is designed correctly the certification process should be straightforward. In practice, many projects slow down because the documentation doesn’t clearly show how the design meets the requirements and endless back and forth is required with the test lab.

The issue here isn’t what’s been built, it’s how it has been explained.

This blog focuses on what test labs actually need to evaluate a product efficiently and where documentation gaps most often cause delays.

Start with a Clear Equipment Description

The first thing a test lab needs is a clear understanding of the product. As discussed in the previous blog post about the intended use and product description, a clear intended use and product description allow for many key elements to be established from the start of the project.

If this isn’t clear, everything else becomes harder to assess.

Make the Design Easy to Follow

The schematics provided for IEC 61010 projects are typically created for manufacturing purposes, not for communicating compliance with IEC 61010. That’s where things start to break down.

From a test lab’s perspective, those same schematics need to do more than show function, they need to clearly show how the product complies.

Where schematics and drawings don’t describe how the product was designed to comply with the fire and electric shock protection requirements, the test lab ends up making guesses about what was intended, or they have to go back and forth with manufacturers and incur unnecessary delays

Where engineers have carefully considered the standard and designed the equipment to comply with IEC 61010, the drawings and schematics should clearly communicate this to the lab. Details such as the working voltages, the critical creepage and clearance distances, material groups, overvoltage categories, and pollution degree are all items that are critical for the test lab to understand how the equipment complies.

When this information is clear, evaluation moves quickly. When it’s not, it has to be reconstructed from multiple sources – which slows everything down.

Clearly Identify Critical Components

Products tested to IEC 61010 typically include many safety critical components, such as power supplies, enclosures, fuses, connectors, and wiring.

In practice, a lot of time gets spent clarifying basic details about these components:

• What components are being used
• What their ratings are
• Whether there are any conditions of use

This back and forth is avoidable.

Within the bill of materials for the equipment the critical components should be clearly documented, including:

• Manufacturer and part number
• Ratings (e.g., electrical, temperature, flammability, etc.)
• Certifications and conditions of acceptability

Substitutions are another common issue relating to the components. Even small changes can affect thermal behavior, spacings, or protection performance. If alternates aren’t planned and documented ahead of time, you end up re-verifying everything and sometimes also re-testing.

Conclusion

Documentation can be developed to meet the standard; however, it can also reduce the uncertainty in IEC 61010 projects.

When the design is clearly described, assumptions are visible, and fire and electric shock protection strategies are easy to follow, the evaluation moves quickly. Submitting your product to the test lab becomes a confirmation of your work.

When that clarity is missing, delays start. The test lab has to interpret and sometimes make guesses about the decisions that were made to design a compliant product.

The takeaway is simple: don’t treat documentation as a final step. Instead build it alongside the design, and make sure it clearly shows how the product meets IEC 61010.

Do that, and you’ll reduce back-and-forth, avoid late-stage surprises, and move through IEC 61010 evaluations with far more confidence.