IEC 61439-1/2 documentation requirements

IEC 61439-1 (general rules) and IEC 61439-2 (low-voltage switchgear and controlgear assemblies) define the mandatory documentation package that must accompany every LVSA (low-voltage switchgear assembly). The five core documents are non-negotiable for CE marking and for passing a third-party verification inspection.

Circuit schedule format

The circuit schedule is the most frequently consulted document on site — both during installation and throughout the operational life of the building. A 15-column format covering all protection parameters is standard for commercial distribution panels.

MCB types: B (general purpose), C (motor/transformer inrush), D (high inrush). RCD types: AC (sinusoidal fault only), A (AC + pulsed DC), F (AC + pulsed DC + high frequency), B (all types including smooth DC). A full commercial panel circuit schedule typically contains 20–80 rows depending on installation size.

As-built drawings vs design drawings

Design drawings represent the intended installation. As-built drawings represent the actual installed configuration — every deviation from design must be recorded. This distinction matters for insurance, for maintenance, and for any future modification works.

Panel nameplate data (IEC 61439)

The nameplate is the identity document of the panel — it must be permanently attached, legible throughout the panel's operational life, and contain all data required by IEC 61439-1 Clause 9.2. Nameplates engraved on aluminium or stainless steel outlast adhesive labels by decades.

Single-line diagram conventions (DIN EN 60617)

Single-line diagrams (SLDs) use standardised symbols from DIN EN 60617 (IEC 60617). Correct symbol use ensures the diagram is readable by any electrical engineer regardless of which contractor produced it.

KNX-specific additions to standard panel documentation

A KNX smart panel requires additional documentation beyond the standard IEC 61439 package. M&E specifiers and building owners increasingly require these documents as conditions of practical completion.

O&M manual structure

The operation and maintenance manual (O&M manual) is the long-term reference document for building facilities teams. It must be comprehensive enough that a competent electrician with no prior knowledge of the installation can safely operate, test and fault-find the system.

Maintenance schedule

Digital documentation tools

Panel documentation is increasingly produced in dedicated electrical CAD tools rather than in generic CAD or Word. These tools automate circuit schedule generation from the schematic, cross-reference components with manufacturer databases and export in standard formats accepted by client M&E teams.

Step 1: Commission KNX installation in ETS6
  → All devices programmed; all GAs assigned and tested

Step 2: Export group address CSV from ETS6
  → ETS6 → Group Addresses → Export → CSV
  → File: ProjectName_GA_YYYY-MM-DD.csv

Step 3: Open CSV in Excel or documentation tool
  → Import into Eplan P8 via Object Properties → User-defined fields
  → Or embed as table in AutoCAD Electrical sheet 'KNX GA Schedule'

Step 4: Cross-reference with circuit schedule
  → Add column 'KNX GA' to actuator circuits in circuit schedule
  → Example: L1 Office A Lighting → GA 1/1/1 (switch) / 1/1/2 (status)

Step 5: Include in O&M manual appendix
  → Appendix A: Circuit schedule
  → Appendix B: KNX group address table (from CSV)
  → Appendix C: KNX individual address list
  → Appendix D: ETS6 project file location and access