IKEA LED Light Chain EMC Test Report

Report Details

Remarks

Revision History

Test Sites

Test Facilities

Laboratory: TÜV Rheinland (Shanghai) Co., Ltd.

Address: Workshop14, North Half of Workshop 10 and Workshop 16, Pingqian (Taicang) Modern Industrial Park, No.525, Yuewang Lingang South Road, Shaxi, Taicang, Jiangsu, China

The test equipment used is in accordance with CISPR 16-1 series standards for measurement of radio interference. Refer to Clause 7 for test and measurement instruments.

General Product Information

Product Function and Intended Use

The EUT (equipment under test) is an ordinary LED light chain for lighting and similar use. For further information, refer to the user's manual.

Ratings and System Details

Rated input: AC 120 V, 60 Hz, 0.025 A

Rated power: 2.5 W

This product is an LED light chain, powered by approved Class 2 power unit ICPSW24-3.6-IL-1.

Independent Operation Modes

The basic operation modes are: "ON" and "OFF".

Description of interconnecting cables

Noise Generating and Noise Suppressing Parts

Refer to the circuit diagram for further information.

Highest frequency generated or used in the device or on which the device operates or tunes

The highest frequency used in the EUT is 65 kHz.

Submitted Documents

Circuit diagram, user's manual, and rating label.

Test Set-up and Operation Modes

Principle of Configuration Selection

For emission testing, the EUT was configured to measure its highest possible emission level. Test conditions were adapted according to the instructions for use. The sequence of testing included conducted emission tests performed on 2024-10-28 and radiated emission tests performed on 2024-10-28.

Equipment and cable arrangement

Conducted Emission Setup: The setup includes the EUT, an EMI receiver, a computer, a Line Impedance Stabilization Network (LISN), a transformer, and a power supply. The EUT is placed on a 0.8m high support. The LISN is connected to the EMI receiver and power supply. The computer controls the measurement system.

Radiated Emission Setup: The setup involves the EUT placed on an 80cm high wooden support above a reference ground plane, at a distance of 3m from the receiving antenna. The antenna height can be varied from 1m to 4m. The test is performed in a semi-anechoic chamber.

Test Software

No special test software was used during the tests.

Special Accessories and Auxiliary Equipment

None.

Countermeasures to achieve EMC Compliance

No other special measures were employed to achieve the requirement.

Conformity Decision Rule

For all EMI tests in this report, compliance with limits is determined by comparing measurement results directly with corresponding limits, without considering measurement uncertainties, as the uncertainties are less than the values specified in CISPR 16-4-2.

Test Results EMISSION

Emission in the Frequency Range up to 30 MHz

Conducted emission

Date of testing: 2024-10-28

Test procedure: FCC 47 CFR Part 15, Subpart B:2023, ICES-005:2018, ANSI C63.4-2014 and CISPR 16-2-1

Frequency range: 0.15 – 30 MHz

Limits: Quasi-peak limit: 0.15-0.5 MHz, 66 to 56 dBμV (decreasing with frequency); 0.5 – 5 MHz, 56 dBμV; 5 – 30 MHz, 60 dBμV. Average limit: 0.15-0.5 MHz, 56 to 46 dBμV (decreasing with frequency); 0.5 – 5 MHz, 46 dBμV; 5 – 30 MHz, 50 dBμV.

Bandwidth of EMI receiver: 9 kHz

Measurement time: 1 s

Kind of test site: Shielded room

Input voltage: AC 120 V, 60 Hz

Operational mode: Lighting on

Ambient condition: Temperature: 21.5 °C; Relative humidity: 52.3 %

Expanded measurement uncertainty (k=2): 2.33 dB

The minimum margin to the limit is 7.87 dB. The measurement setup was according to ANSI C63.4-2014 in a shielded room. The tested object was set up on a wooden support, 0.8 m away from the AMN. The power cord was folded to form a bundle of 0.3 m to 0.4 m. Disturbance voltage was tested on the neutral and phase lines.

Figure 1: Spectral Diagrams, Conducted Emission, 150 kHz – 30 MHz, L

Figure 1 displays the spectral diagram for conducted emissions on the Line (L) conductor. It plots the signal level in dBμV against frequency from 150 kHz to 30 MHz. The graph shows measured Quasi-Peak and Average values relative to the defined limits. Specific measurement results are detailed in the tables below.

Figure 2: Spectral Diagrams, Conducted Emission, 150 kHz – 30 MHz, N

Figure 2 displays the spectral diagram for conducted emissions on the Neutral (N) conductor. It plots the signal level in dBμV against frequency from 150 kHz to 30 MHz. The graph shows measured Quasi-Peak and Average values relative to the defined limits. Specific measurement results are detailed in the tables below.

Emission in the Frequency Range above 30 MHz

Radiated emission (30-1000 MHz)

Date of testing: 2024-10-28

Test procedure: FCC 47 CFR Part 15, Subpart B:2023, ICES-005:2018, ANSI C63.4-2014 and CISPR 16-2-3

Product classification: Class B

Frequency range: 30 – 1000 MHz

Limits (3 m distance): Quasi-peak limits: 30 – 88 MHz, 40 dBμV/m; 88 – 216 MHz, 43.5 dBμV/m; 216 – 1000 MHz, 46 dBμV/m.

Bandwidth of EMI receiver: 120 kHz

Measurement time: 1 s

Kind of test site: Semi-anechoic chamber

Input voltage: AC 120 V, 60 Hz

Operational mode: Lighting on

Ambient condition: Temperature: 20.5 °C; Relative humidity: 45 %

Expanded measurement uncertainty (k=2): 5.40 dB

The minimum margin to the limit is 11.6 dB. The radiated disturbance test was carried out in a semi-anechoic chamber at a 3 m distance. The EUT was placed on an 80 cm wooden support. The wooden support was rotated 360°, and the antenna height was varied from 1 m to 4 m to find the maximum disturbance. Tests were performed in horizontal and vertical polarizations.

Figure 3: Spectral Diagrams, Radiated Emission, 30 MHz – 1000 MHz, Horizontal polarization

Figure 3 presents the spectral diagram for radiated emissions in the horizontal polarization, covering the frequency range from 30 MHz to 1000 MHz. It shows the signal level in dBμV/m against frequency. The graph indicates measured Quasi-Peak values against the defined limits. Specific measurement results are detailed in the table below.

Figure 4: Spectral Diagrams, Radiated Emission, 30 MHz – 1000 MHz, Vertical polarization

Figure 4 presents the spectral diagram for radiated emissions in the vertical polarization, covering the frequency range from 30 MHz to 1000 MHz. It shows the signal level in dBμV/m against frequency. The graph indicates measured Quasi-Peak values against the defined limits. Specific measurement results are detailed in the table below.

Photographs of the Test Set-Up

Refer to the test setup file.

List of Test and Measurement Instruments

List of Figures

• Figure 1: Spectral Diagrams, Conducted Emission, 150 kHz – 30 MHz, L
• Figure 2: Spectral Diagrams, Conducted Emission, 150 kHz – 30 MHz, N
• Figure 3: Spectral Diagrams, Radiated Emission, 30 MHz – 1000 MHz, Horizontal polarization
• Figure 4: Spectral Diagrams, Radiated Emission, 30 MHz – 1000 MHz, Vertical polarization