What is EN 61800-3:2020?

EN 61800-3:2020 is a technical standard developed by the International Electrotechnical Commission (IEC) that focuses on electrical equipment for use in adjustable speed motor drives. This standard provides guidelines and requirements for the design, installation, operation, and maintenance of these drives, ensuring their safe and reliable use in various applications.

Scope and Application

The scope of EN 61800-3:2020 includes all types of adjustable speed electrical power drive systems connected to alternating current (AC) voltage up to 1 kV at frequencies below 600 Hz. These power drive systems are commonly used in industrial applications, such as pump systems, fans, compressors, conveyors, and machine tools.

The standard applies to both new installations and modifications or extensions of existing installations. It covers not only the motor drive units but also associated equipment, such as power supplies, braking resistors, control devices, and communication networks.

Key Requirements

EN 61800-3:2020 sets forth several key requirements to ensure the safe operation of adjustable speed motor drives. These include:

Electromagnetic Compatibility (EMC): The standard addresses the electromagnetic compatibility of the entire system, considering emissions and immunity to external disturbances. It provides guidelines for minimizing electrostatic discharge, radio frequency interference, and other potential electromagnetic issues.

Harmonics and Power Quality: EN 61800-3:2020 specifies limits for harmonic currents generated by the drives, aiming to minimize power quality problems and prevent adverse effects on the utility grid and other connected equipment.

Protection Against Electrical Hazards: The standard covers protective measures against electrical shocks, insulation coordination, and grounding requirements, ensuring the safety of operators and maintenance personnel.

Control and Monitoring: EN 61800-3:2020 establishes guidelines for control functions, interface requirements, and monitoring capabilities of adjustable speed motor drives. It ensures the drives' proper response to different operating conditions and allows for effective monitoring and diagnostics.

Compliance and Certification

Manufacturers and suppliers of adjustable speed motor drives should ensure their products comply with the requirements of EN 61800-3:2020. Compliance demonstrates that the equipment meets international standards for safety, performance, and reliability. Independent certification bodies can assess and verify compliance through testing, inspection, and evaluation procedures.

End users, such as industries and facilities utilizing motor drive systems, should also be aware of the standard's requirements and verify that the installed equipment complies with EN 61800-3:2020. This helps to ensure the safe and optimal operation of their motor drive systems.

In conclusion, EN 61800-3:2020 plays a crucial role in promoting the safe and reliable use of adjustable speed motor drives. Its guidelines and requirements help to mitigate electromagnetic compatibility issues, ensure power quality, protect against electrical hazards, and enhance control and monitoring capabilities. Compliance with this standard provides assurance that motor drive systems meet international standards, benefiting both manufacturers and end users alike.