EN50130 Part 4 Electromagnetic Compatibility Testing

According to the EN 50130-4:2011 standard, the Beijing Yizongsuo Electromagnetic Compatibility Laboratory (Institute of Instrumentation Technology and Economics of the Machinery Industry / Machinery Industry Measurement Control Equipment and Network Quality Testing Center) can provide comprehensive electromagnetic compatibility (EMC) testing services for alarm system components (such as access control, fire protection, intrusion alarms, etc.) and issue third-party test reports accredited by CNAS and CMA. The following is a detailed description of the test methods covered by this standard and the laboratory's capabilities:

1. Voltage Dips and Short Interruption Immunity Test

• Test Method: Simulates voltage dips (e.g., voltage drops to 70% of the nominal value) or short interruptions (e.g., power outages lasting more than 10ms) caused by grid or power facility failures, evaluating the equipment's ability to continue operating under abnormal power supply conditions. The test is based on IEC 61000-4-11/29 standards, using programmable power supplies to simulate voltage changes and record whether the equipment functions abnormally or its recovery time.
• Laboratory Capability: The Yizongsuo Laboratory is equipped with advanced programmable power supply systems, supporting voltage dips, short interruptions, and voltage variation tests for DC/AC ports, covering the severity levels required by the standard (e.g., Class 3 or higher).

2. Electrostatic Discharge Immunity Test

• Test Method: Based on IEC 61000-4-2, electrostatic pulses of up to ±8kV (contact discharge) or ±15kV (air discharge) are applied to contact points such as equipment casings and interfaces to verify the equipment's tolerance to electrostatic interference. The test includes both direct discharge (contact points) and indirect discharge (coupling plate) modes.
• Laboratory Capability: The laboratory uses fully automatic electrostatic discharge simulators, supporting multiple discharge scenarios, ensuring test results comply with the immunity criteria of EN 50130-4 (e.g., no degradation of equipment function or automatic recovery after brief interruptions).

3. Radiated Radio-Frequency Electromagnetic Field Immunity Test

• Test Method: Based on IEC 61000-4-3, radio-frequency fields in the 80MHz-6GHz range (up to 10V/m) are emitted via antennas in an anechoic chamber to evaluate the equipment's stability in strong electromagnetic radiation environments. The test covers both horizontal and vertical polarization directions, simulating interference environments from industrial or communication equipment.
• Laboratory Capability: Yizongsuo has a 3-meter semi-anechoic chamber and full-frequency range RF signal generators, enabling precise control of field strength and frequency range to meet the immunity requirements of EN 50130-4 for residential and industrial scenarios.

4. Immunity to Conducted Disturbances, Induced by Radio-Frequency Fields

• Test Method: Based on IEC 61000-4-6, RF interference signals in the 150kHz-80MHz range (up to 10V) are injected into equipment cables via current clamps or coupling clamps to verify the equipment's resistance to conducted disturbances. The test covers critical ports such as power lines and communication lines.
• Laboratory Capability: The laboratory employs a multi-channel signal injection system, supporting common-mode and differential-mode interference tests, ensuring normal equipment function under conducted disturbances.

5. Electrical Fast Transient/Burst Immunity Test

• Test Method: Based on IEC 61000-4-4, fast transient bursts with a repetition frequency of 5kHz (single pulse amplitude up to 4kV) are applied to equipment power and signal lines to simulate transient interference such as relay contact bouncing. The test covers both positive and negative polarities and multiple pulse combinations.
• Laboratory Capability: The laboratory is equipped with high-speed burst generators, supporting fully automated test processes, ensuring pulse parameters (rise time 5ns, pulse width 50ns) strictly comply with standard requirements.

6. Surge Immunity Test

• Test Method: Based on IEC 61000-4-5, surge impulses of up to 6kV (power lines) or 2kV (signal lines) are applied to the equipment via a combination wave generator (1.2/50μs voltage wave, 8/20μs current wave) to simulate transient overvoltages caused by lightning strikes or grid switching.
• Laboratory Capability: The laboratory uses high-precision surge generators, supporting line-to-line and line-to-ground coupling methods, covering the severity levels specified by the standard (e.g., Class 4).

Core Advantages of Beijing Yizongsuo Laboratory

1. Accreditation: The laboratory is accredited by CNAS (China National Accreditation Service for Conformity Assessment) and CMA (China Metrology Accreditation), with test reports internationally recognized and directly applicable for CE certification, domestic market access, etc.
2. Equipment and Technology: Equipped with a 3-meter anechoic chamber, full-frequency range immunity test systems, and imported EMC testing equipment, supporting end-to-end services from pre-testing (pre-compliance) to formal testing.
3. Service Scope: In addition to EN 50130-4, the laboratory also provides one-stop testing services including environmental reliability (e.g., high/low temperature, vibration), electrical safety, and harmonic current emission.
4. Efficient Service: Short testing cycles (typically 3-5 working days), with support for整改 consultation and retesting, helping enterprises quickly achieve certification.

Report Issuance and Technical Support

• Report Content: Includes test items, methods, result判定 (pass/fail), standard compliance statements, and equipment parameter records.
• Application Scenarios: Suitable for EU CE certification (in combination with EMC directives), domestic CCC certification, bid acceptance, etc.

The Beijing Yizongsuo Electromagnetic Compatibility Testing Center, located at No. 397A Guang'anmenwai Street, Xicheng District, Beijing, conducts electromagnetic compatibility testing and environmental reliability testing.