IEC 61800-9-2:2017

Overview

IEC 61800-9-2:2017 is an international standard developed by the International Electrotechnical Commission (IEC) that addresses energy efficiency indicators for adjustable speed electrical power drive systems (PDS), motor starters, and power electronics used in motor-driven applications. It forms Part 9-2 of the IEC 61800 series, focusing on ecodesign principles to support improved energy performance in power drive systems.

This standard provides a comprehensive methodology for determining losses in complete drive modules (CDM), power drive systems, and motor systems. It defines energy efficiency (IE) and energy efficiency system (IES) classes, their limit values, and standardized test procedures for measuring overall system losses. The aim is to help manufacturers, system integrators, and energy managers optimize motor-driven equipment for maximum energy efficiency while considering operational profiles and system architecture.

Key Topics

• Energy Efficiency Indicators: Defines IE classes for motors, motor starters, and complete drive modules, and IES classes for entire power drive systems.
• Loss Determination Methodology: Specifies testing and calculation procedures to measure losses across different components, including input converters, output inverters, DC link, motor losses, control and standby losses, and cooling factors.
• Reference Models: Utilizes reference power drive systems (RPDS), reference complete drive modules (RCDM), and reference motors (RM) to benchmark and classify efficiency.
• Test Procedures: Provides detailed type testing methods such as input-output measurements and calorimetric techniques to accurately assess efficiency under varying operating conditions.
• Ecodesign Approach: Offers guidelines for selecting and implementing the best energy-efficient solutions considering speed/load profiles, operating points over time, and system architecture.
• Classification Limits: Establishes clear limit values for IE and IES classes, enabling consistent energy performance comparison across different products and systems.
• User Documentation Requirements: Specifies mandatory information for manufacturers to include for product selection and efficiency classification.

Applications

IEC 61800-9-2:2017 applies broadly to industries and sectors utilizing motor-driven systems that can benefit from energy efficiency improvements, including:

• Industrial Automation: Enhancing energy performance of variable speed drives used in manufacturing processes.
• HVAC Systems: Improving motor and drive efficiency in heating, ventilation, and air conditioning equipment.
• Renewable Energy and Utilities: Optimizing power electronics in renewable generation and energy distribution systems.
• Process Engineering: Reducing energy losses in pumps, fans, compressors, and conveyors through better drive system design.
• Building Management: Integrating efficient motor starters and power electronics in building infrastructure to reduce operational costs.
• Energy Management Systems: Assisting facility managers to evaluate and select energy-efficient motor drive components and systems.

By following the standard’s methodology, stakeholders can achieve reduced energy consumption, lowered carbon footprint, and compliance with ecodesign regulations while maintaining system reliability and operational flexibility.

Related Standards

IEC 61800-9-2:2017 complements and builds upon various related standards within the IEC 61800 series and beyond:

• IEC 61800-1: General requirements for adjustable speed electrical power drive systems.
• IEC 61800-2: Electrical and electronic equipment for power drive systems-Safety requirements.
• IEC 60034 series: Standards covering rotating electrical machines, including energy efficiency classes for motors.
• IEV (International Electrotechnical Vocabulary): Provides standardized technical terminology used throughout the IEC standards.
• EN 50598 series: Energy performance standards for power drive systems focusing on overall efficiency assessment.

Together, these standards facilitate a harmonized framework supporting the systematic improvement of energy efficiency in adjustable speed motor drives globally.

Keywords: IEC 61800-9-2, energy efficiency indicators, power drive systems, motor starters, complete drive modules, adjustable speed drives, ecodesign, motor system efficiency, power electronics, loss determination, energy efficiency classes, IE class, IES class, industrial automation, energy management.