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IEC 50121-4 Testing Located in Durham, North Carolina

IEC 50121-4 Emission and Immunity Testing of Signaling and Telecommunication Equipment

Electromagnetic compatibility (EMC) is a critical aspect of modern electronic devices, especially in environments with complex electromagnetic interactions like railways. The IEC 50121-4 standard focuses on EMC requirements for signaling and telecommunications apparatus in railways, ensuring these systems operate reliably without interference.

Keystone’s EMC testing engineers streamline the process and assist companies in achieving the compliance they require. Additionally, our proven process helps avoid product launch delays. If you are ready to start your immunity and emissions testing, please request a quote.

Summary of IEC 50121-4 Emission and Immunity Testing

IEC 50121-4 testing, also referred to as EN 50121-4 testing in Europe, pertains to the EMC requirements for signaling and telecommunications apparatus in railway applications. This standard ensures that these systems can operate effectively without causing or being affected by electromagnetic interference (EMI).

The primary significance of IEC 50121-4 testing lies in its ability to guarantee the reliability and safety of railway signaling and telecommunications systems. Given the critical nature of these systems, ensuring they function correctly in diverse electromagnetic environments is essential to prevent malfunctions and ensure the smooth operation of railway services.

Advantages of Keystone Compliance for IEC 50121-4 Testing

Convenient Location and State-of-the-Art Facilities

Keystone Compliance is strategically located within the RTP, just 10 minutes from RDU Airport. This location, combined with our advanced EMC/EMI testing lab, makes Keystone an ideal choice for efficient and effective testing services.

ISO 17025 Accreditation

Keystone Compliance holds ISO 17025 accreditation, reflecting commitment to the highest standards of accuracy and reliability in testing. This accreditation ensures that testing processes are conducted according to internationally recognized guidelines.

Hands-On Assistance During Troubleshooting

Unlike Nationally Recognized Testing Laboratories (NRTLs), Keystone Compliance offers hands-on assistance during troubleshooting. This personalized support ensures that manufacturers are not left to address issues alone, enabling quicker resolutions and adherence to project timelines.

Comprehensive Testing and Certification Services

Keystone Compliance provides a full suite of testing and certification services, streamlining the process for manufacturers. From initial testing to final certification, Keystone offers a seamless experience, ensuring all necessary requirements are met.

Types of IEC 50121-4 Tests

Conducted Emissions Testing

Conducted emissions testing evaluates the electromagnetic disturbances that an apparatus generates, which are conducted along power and signal lines. This test ensures that the emissions do not exceed the limits set by the IEC 50121-4 standard, preventing interference with other equipment.

Radiated Emissions Testing

Radiated emissions testing measures the electromagnetic energy emitted by the apparatus through radiation. This test ensures that the radiated emissions remain within acceptable limits to avoid causing interference with nearby electronic devices.

Electrostatic Discharge (ESD) Testing

ESD testing assesses the apparatus’s immunity to electrostatic discharges that can occur during human interaction. This test involves simulating ESD events to ensure the apparatus can withstand and recover from such disturbances.

Radiated Radio-Frequency Electromagnetic Field Immunity Testing

This test examines the apparatus’s resilience to electromagnetic fields generated by external sources. The apparatus is exposed to varying radio-frequency (RF) fields to ensure it can operate without performance degradation.

Electrical Fast Transient/Burst (EFT/B) Testing

EFT/B testing evaluates the apparatus’s ability to withstand fast electrical transients, typically caused by switching actions in the power supply. This test ensures the apparatus can continue to function correctly under such conditions.

Surge Immunity Testing

Surge testing assesses the apparatus’s ability to endure high-energy surges, such as those resulting from lightning strikes or power line switching. The goal is to ensure the apparatus remains operational and undamaged.

Conducted Radio-Frequency Immunity Testing

This test measures the apparatus’s immunity to conducted RF disturbances along its power and signal lines. It ensures the apparatus can operate correctly without being affected by external RF interference.

Power Frequency Magnetic Field Immunity Testing

This test examines the apparatus’s performance when exposed to magnetic fields generated by power lines or other sources. It ensures the apparatus can operate without interference from these magnetic fields.

Voltage Dips, Short Interruptions, and Voltage Variations Immunity Testing

This test assesses the apparatus’s ability to handle power quality issues such as voltage dips, short interruptions, and variations. The apparatus must demonstrate resilience to these disturbances to ensure reliable operation.

How to Conduct IEC 50121-4 Testing

Preparing for Testing

Preparation is key to successful IEC 50121-4 testing. This phase involves understanding the specific requirements of the apparatus under test, defining the scope of testing, and ensuring all relevant documentation is available. Manufacturers should provide detailed product information, including specifications, operating instructions, and safety guidelines.

Conducting the Tests

During testing, the apparatus is subjected to various electromagnetic disturbances as specified by the IEC 50121-4 standard. Each test is conducted under controlled conditions, and the results are meticulously recorded. Keystone Compliance provides hands-on assistance during troubleshooting, ensuring any issues are promptly addressed to stay on schedule.

Analyzing Test Results

After testing, the results are analyzed to determine the apparatus’s compliance with IEC 50121-4. Any failures are investigated, and manufacturers are provided with detailed reports outlining the findings and recommendations for corrective actions.

Expert IEC 50121-4 EMC Compliance Testing Laboratory

IEC 50121-4 testing is vital for ensuring the reliability, safety, and marketability of railway signaling and telecommunications systems. By adhering to this standard, manufacturers can demonstrate their commitment to producing high-quality, interference-free products.

Keystone Compliance, with its ISO 17025 accredited EMC/EMI testing lab conveniently located within the RTP and just 10 minutes away from RDU Airport, offers comprehensive and reliable testing services.

Request a quote to see why hundreds of manufacturers each year trust Keystone with their compliance testing needs.


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