IEC 61000-6-2:2016

Overview

IEC 61000-6-2:2016 is the third-edition generic EMC immunity standard for industrial environments published by the IEC. It defines immunity requirements for electrical and electronic equipment intended for use in industrial locations (indoor and outdoor) and covers disturbances in the frequency range 0 Hz to 400 GHz. This generic standard applies when no dedicated product or product-family EMC immunity standard exists and replaces the 2005 second edition.

Key characteristics:

• Focus: Electromagnetic compatibility (EMC) - Immunity for industrial equipment
• Frequency coverage: 0 Hz to 400 GHz
• Applicability: equipment connected to industrial power supplies (AC or DC), battery-operated apparatus, and installations fed from medium/high-voltage transformers
• Environment: industrial sites with ISM equipment, frequent switching of heavy inductive/capacitive loads, and high currents

Key topics and technical requirements

IEC 61000-6-2 organizes practical immunity requirements by equipment ports and test types rather than specific products. Important technical topics include:

• Performance criteria and classification of acceptable behaviour during/after tests
• Ports covered: enclosure ports, signal/control ports, input/output DC and AC power ports
• Immunity phenomena and test methods (normatively referencing IEC 61000‑4 series), including:
  • Electrostatic discharge (ESD) - IEC 61000‑4‑2
  • Radiated RF field immunity - IEC 61000‑4‑3
  • Electrical fast transients / bursts - IEC 61000‑4‑4
  • Surge immunity - IEC 61000‑4‑5
  • Conducted RF disturbances - IEC 61000‑4‑6
  • Power frequency magnetic fields - IEC 61000‑4‑8
  • Voltage dips, interruptions and variations (including IEC 61000‑4‑34 for >16 A)
  • Reverberation chamber, TEM and anechoic room test methods (IEC 61000‑4‑20/21/22)
• Testing conditions, measurement uncertainty, product documentation and applicability rules
• Guidance for product committees (Annex A) to tailor tests/levels for specific product families

Practical applications and users

IEC 61000-6-2 is essential for:

• EMC engineers and product designers creating robust industrial controllers, drives, PLCs, sensors, power conversion equipment, instrumentation and battery/DC systems
• Test laboratories and conformity assessment bodies conducting immunity testing
• System integrators and OEMs specifying procurement and acceptance criteria for industrial equipment
• Compliance officers and risk managers assessing electromagnetic resilience in manufacturing plants, process control and heavy-industry installations

Use cases:

• Defining EMC test plans when no product-specific immunity standard exists
• Integrating immunity requirements into design-for-EMC and mitigation strategies
• Preparing documentation for certification and supplier contracts

Related standards

Normative references include the IEC 61000‑4 series (‑2, ‑3, ‑4, ‑5, ‑6, ‑8, ‑11, ‑20, ‑21, ‑22, ‑34), CISPR 22 and IEC 60050‑161. These are used together with IEC 61000‑6‑2 to design, test and demonstrate EMC immunity for industrial equipment.

Keywords: IEC 61000-6-2, EMC immunity, industrial environments, electromagnetic compatibility, ESD, surge, radiated immunity, conducted disturbances, IEC 61000-4, immunity testing.