IEC 60146-2:1999

Overview

IEC 60146-2:1999 is an international standard developed by the International Electrotechnical Commission (IEC) for self-commutated semiconductor converters, including direct d.c. converters. This standard applies to all types of self-commutated semiconductor inverters and converters containing at least one self-commutated part, covering both alternating current (a.c.) and direct current (d.c.) converters in various applications. The scope extends to equipment such as uninterruptible power systems (UPS), variable speed drives, and electric traction systems, setting out general requirements, definitions, testing procedures, and marking guidelines.

Key Topics

• Definitions and Functional Descriptions
  IEC 60146-2 establishes standardized terminology for converter functions, types, components, and essential properties. This ensures clear communication among manufacturers, users, and regulators in the field of power electronics.

• Testing and Performance Criteria
  The standard outlines classification and scheduling of tests for converter assemblies, including:

  • Visual inspection
  • Checking of auxiliary and protective devices
  • Insulation and overcurrent testing
  • Functionality under various load conditions
  • Performance parameters (e.g., output voltage, frequency range, power loss, audible noise, harmonic distortion)

• Environmental and Service Conditions
  Guidelines are provided for environmental factors, such as:

  • Cooling methods identification
  • Normal and exceptional service conditions
  • Electromagnetic compatibility and immunity requirements

• Rated Values and Marking
  The standard specifies requirements for the declaration of rated input and output values, as well as mandatory marking for clear identification and traceability.

Applications

IEC 60146-2 supports a wide range of industries by providing a consistent technical framework for the use of self-commutated semiconductor converters, including:

• Industrial Automation
  Enables reliable power conversion for motor drives, robotics, and machinery by ensuring uniform performance standards.

• Renewable Energy Systems
  Provides guidance for inverters used in solar, wind, and other renewable installations for efficient energy conversion and grid compatibility.

• Electric Transportation
  Applicable to propulsion and control systems in electric railways and vehicles, enhancing safety and interoperability.

• Uninterruptible Power Systems (UPS)
  Ensures continuity of power supply in critical systems, such as data centers and medical facilities.

• General Power Electronics
  Relevant for any application requiring transformation, regulation, or conversion between a.c. and d.c. sources.

Related Standards

IEC 60146-2 should be used in conjunction with other key standards for comprehensive compliance in power electronics:

• IEC 60146-1-1: General requirements for semiconductor converters
• IEC 60146-1-2: Application guide for semiconductor converters
• IEC 60050-551: International Electrotechnical Vocabulary for power electronics
• IEC 60664-1: Insulation coordination for low-voltage equipment
• IEC 61000 series: Electromagnetic compatibility (EMC) standards

IEC 60146-2:1999 provides essential guidelines and requirements for the safe, reliable, and efficient operation of self-commutated semiconductor converters, supporting development, testing, and deployment across diverse industrial and technological sectors.

Keywords: IEC 60146-2, self-commutated semiconductor converters, direct d.c. converters, power electronics, standard, a.c. converters, d.c. converters, testing, marking, rated values, EMC compliance, industrial automation, renewable energy, electric traction, UPS.