Most countries base machine electrical safety on IEC 60204-1, which Europe publishes as EN 60204-1. The United States uses NFPA 79 for industrial machinery, and Canada uses its own CSA standards. Your supply voltage and frequency also decide how the machine's motors, transformer and panel are built.
Tell the maker your country, your supply and the standard you need before it quotes. Changing a panel after the machine is built costs time and money.
The main standards
- IEC 60204-1 covers the electrical equipment of machines: protection against shock, emergency stops, control circuits, wiring, marking and documents.
- EN 60204-1 is the European version, and it is commonly used to show conformity with the EU machinery rules.
- NFPA 79 covers industrial machinery in the United States. Control panels are often also built and listed to UL 508A, and many sites ask for this.
- In Canada, CSA standards apply, and machines usually need approval by an accredited certification body before connection.
- Other countries often adopt IEC standards nationally, sometimes with local additions, so check with your national standards body.
Voltage and frequency
Supply varies by country, and sometimes within one country. These are typical industrial supplies, but always confirm with your electrician or utility:
- Europe, the UK, India and much of Africa and Asia use 50 Hz, with three-phase supply around 400 V or 415 V.
- The United States uses 60 Hz, with common three-phase supplies including 208 V, 240 V and 480 V.
- Canada uses 60 Hz, and 600 V three-phase is common in industry alongside lower voltages.
- Japan uses 50 Hz in the east and 60 Hz in the west.
- Several countries in the Americas and the Middle East use 60 Hz, so check rather than assume.
What changes on the machine
A motor wound for 50 Hz runs faster on 60 Hz, which changes spindle speeds, pump output and cooling. Some components are rated for both, but many are not. The maker may change motors, add a transformer or set the drives for your supply.
Also agree the control voltage, the plug or terminal arrangement, the cable colour code and the language of panel labels. For pumps and motors, our article on 50 Hz and 60 Hz pumps covers the same issue in more depth.
Responsibility and checks
The party placing the machine on your market is usually responsible for electrical conformity. Confirm requirements with your regulator, electrical inspector or certification body. Ask the maker for the electrical drawings, the component list and an insulation and earth continuity test record. Check the panel at the trial, as covered in witnessing a machine trial.
If your site needs a certification mark on the panel, ask before ordering whether the maker can supply it, because few workshops hold these approvals.
Next step
We specify the electrical standard and supply in the order and check the panel before shipment. To start, book a free sourcing review.