EMC Testing — RE, CE, ESD

emc testingitems — RE, CE, and ESD — are essential for ensuring the compatibility and reliability of electronic products in electromagnetic environments.

They respectively assess:

1. Radiated Emissions (RE)

2. Conducted Emissions (CE)

3. Electrostatic Discharge (ESD) immunity

These tests make sure that products can operate normally in various electromagnetic environments without causing interference to other devices, while also protecting user safety and extending product lifespan.

Radiated Emissions Test (RE)

Definition

Evaluates the level of electromagnetic radiation interference generated by electronic or electrical products or systems during operation.

Ensures that they do not interfere with other electronic devices and that their radiation levels remain within safe limits, protecting users from electromagnetic hazards.

Purpose

1. Prevent the product’s electromagnetic radiation from interfering with other devices during operation.

2. Ensure that the product’s radiation level meets relevant standards and regulatory requirements.

Common Test Standards

Consumer electronics: EN 55032 (RE & CE), Class A, and Class B.

Conducted Emissions Test (CE)

Definition

Evaluates the level of electromagnetic disturbances transmitted outward through power lines, signal lines, or other conduction paths by electronic or electrical products or systems during operation.

Purpose

1. Prevent products from causing electromagnetic interference to other devices through conduction paths.

2. Ensure the product operates on public power grids or signal lines without adversely affecting other devices.

Test Content

Measures the interference signals emitted through power lines, signal lines, and interconnecting cables during device operation, and checks whether these levels exceed the limits defined in relevant standards.

Common Test Standards

1. Chinese standard GB 18655 (RE & CE): Five levels; Level 3 is common, but many now target Level 5 compliance.

2. European and international standards: EN 55014, CISPR 16, IEC 61000-4-6, etc.

Electrostatic Discharge (ESD) Test

Definition

Evaluates a product’s immunity to electrostatic discharge, helping to detect and resolve potential ESD problems early to ensure user safety and product longevity.

Purpose

1. Ensure the product is not damaged or degraded in performance when subjected to ESD.

2. Assess the product’s resistance to ESD interference.

Test Methods

1. Direct Contact Discharge: The discharge electrode of an ESD simulator directly contacts the metal part of the equipment under test, simulating a discharge from an operator or object touching the device.

2. Air Discharge: The discharge electrode is brought near (but not in contact with) the device, simulating discharge from a person or object to a nearby surface.

Common Test Standards

1. Consumer electronics: IEC 61000-4-2 (international), GB/T 17626.2-2006 (China); direct contact voltage ±4 kV, air discharge voltage 8 kV.

2. Medical devices: iec 60601-1-2 (international), YY 0505 (China); direct contact voltage ±4 kV, air discharge voltage 8 kV.

JJR Laboratory in China provides compliance services for Canada ised, EU ROHS, REACH, EN 71, US UL, CPSIA, California 65, China SRRC, japan pse, South Korea KCC, Australia and New Zealand RCM, EU CE, US fcc id, Russia EAC, Singapore IMDA, PSB, India BIS, WPC, UK ukca, china ccc, EU RED, US FCC, US CPC, South Korea KC, Japan MIC, etc.