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TVS - Varistors, MOVs

ERZ-E10E751 application field and working principle

The ERZ-E10E751 is a high-performance surge protection component developed by Murata Electronics. It is suitable for lightning protection in AC power systems, telephones, and communications equipment that require higher protection performance. The typical application field of this product includes AC power, telecommunication, and computer systems. It is widely used in three-phase voltage surge protection and the likes, providing effective surge protection.

The working principle of the ERZ-E10E751 is to use the difference between the peak value and the trough of the impulsive transient voltage to dispose of surplus energy and prevent the damages to the electrical equipment caused by the outside lightning voltage. The core component is the non-linear metal oxide component. This non-linear metal oxide component has the characteristics of high insulation resistance, high breakdown voltage, and low directionality. Moreover, it is made from zinc oxide. This type of varistor is usually installed in series. When the voltage is higher than the rated value, the varistor can break the leakage current effectively.

The parameters of this specific type of varistor have compliant with the standard IEC61643-1 and UL1449. At temperatures lower than 25℃, its rated operating voltage is 750VAC, and its Nominal discharge current In is 10KA(8/20μs). The peak power dissipation is 14KV. The lightning strike intensity of this product is almost 10KA(lines to ground). Besides, these varistors are able to suppress high-frequency transient oscillations and high-frequency ringing voltage.

The benefits of using this protect component are quite clear. Due to the high reliability of this product, it performs well in strong electromagnetic interference and long-term working environment. The metal oxide element limits the transient pulse efficiently. Also, the EMI filter and the transient voltage protection can be done simultaneously. The additional benefit is that the installation of this component requires no additional wiring.

In conclusion, the ERZ-E10E751 is a high-performance surge protection component. It has a wide range of application fields and extensive benefits. It is suitable to use in three-phase voltage surge protection in AC power, telephone, and computer systems. Moreover, it is able to suppress high-frequency transient oscillations and high-frequency ringing voltage. Additionally, it has a high reliability and does not require extra wiring, making it a cost-efficient solution.

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