In the wave of intelligent building and energy-saving renovation, the electromagnetic radiation control of lighting electrical ready boards, as power distribution hubs, has become a key safety indicator. The electromagnetic interference generated by internal components such as high-frequency switching power supplies and LED lights, if not controlled, may cause equipment malfunctions and even affect human health.

Three layer protection system construction technology barrier:

Shielding optimization: Using galvanized steel sheet or aluminum magnesium alloy box, utilizing the high conductivity of metal to form Faraday cage effect. Embedding conductive rubber strips at critical seams enhances shielding effectiveness by over 40% and effectively blocks electromagnetic wave leakage.

Filtering purification: Install an APF active filtering device at the power input end, dynamically compensate for harmonic currents through IGBT modules, and reduce the total harmonic distortion (THD) to below 5%. The output end is equipped with a π - type filter to absorb interference signals in the frequency range of 10kHz-30MHz.

Intelligent grounding: TN-S grounding system is used in conjunction with equipotential bonding, and the grounding resistance is strictly controlled within 4 Ω. Add a transient suppression diode (TVS) array to quickly conduct the grounding path during lightning strikes or surges, suppressing overvoltage within the device's safety threshold.

Innovative material application: The interior of the box is coated with a nanoscale electromagnetic absorption coating, utilizing the hysteresis loss characteristics of ferrite particles to achieve attenuation of over 15dB in the frequency range of 100MHz-1GHz. The new graphene shielding pad provides three times the shielding effectiveness of traditional materials while maintaining elasticity.

The combination of these technologies reduces the electromagnetic leakage intensity of electrical ready boards to 1/5 of the national standard limit, ensuring electrical safety and providing reliable solutions for intelligent buildings in complex electromagnetic environments in the 5G era.