Lightning surge / noise countermeasure

This page introduces countermeasures against lightning surges in the AC power adapter. Proposals for high-pressure resistant models, such as correspondence to "IEC 61000", guarantee up to 10 kV lightning surge, and custom correspondence are also possible.

It corresponds to the lightning surge/noise countermeasure of the AC adapter. As for the presence or absence of effect, various verifications are possible inside the company.

About lightning surge

How do you deal with equipment failures caused by lightning?

If lightning strikes near the building, a high voltage may be applied to nearby wires, etc.

This high voltage is commonly called a "lightning surge." The high voltage generated here may reach a household outlet via electric wire, etc. Household appliances cannot withstand high pressure and may be destroyed, or their operation may stop.

Damage due to lightning surges can cause the AC adapter to malfunction. Continued use may cause smoke and fire, resulting in a dangerous condition.

From the viewpoint of safety design that does not cause such a secondary disaster, we must proceed while considering the design stage.

UNIFIVE closely responds to various customers' custom requirements to prevent equipment destruction caused by lightning surges.

About the custom correspondence of lightning surge

Regarding custom solutions for lightning surge protection:

Standard AC power adapters typically adhere to IEC 61000-4-5 Level 2 and Level 3 standards for lightning surge protection. Nonetheless, specific industries require adapters that can withstand higher surges, such as 10 KV, necessitating high-voltage products. The testing standards for these products range from those set by the IEC and JEC to more specialized standards like those from the ITU-T, which are prevalent in the telecommunications sector.

Our extensive experience and technical knowledge across various sectors, including businesses manufacturing house appliances, communication devices, CATV systems, and sound and audio equipment, equip us to offer tailored solutions to lightning surge protection challenges. We understand these industries' unique needs and are confident in our ability to prevent device failure through our custom solutions.

Customization is a complex process that requires careful consideration, including factors like the equipment's secondary side grounding and the pathways for lightning surge entry. At UNIFIVE, we value your input and often involve our customers in this process.

Our approach to custom surge protection is collaborative. We work closely with you to identify and implement the most effective strategies.
UNIFIVE is committed to delivering a diverse array of AC power adapters, custom-designed to fulfill our clients' unique requirements.

We suggest enhancements to our standard UNIFIVE AC power adapters for custom applications, such as incorporating varistors and arresters on the primary board. It's important to note that we can also completely customize the board to align with your needs.

You can get the product catalog in PDF.

Product initiatives

Since 1989, UNIFIVE has maintained the quality of their AC power adapters and switching power supplies through rigorous quality controls.

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