D78H35.4DC MOV for DC Arresters is a lightning protection device designed to protect your home, business, and other structures from the potentially devastating consequences of thunder and lightning. This MOV block is a highly reliable and effective metal oxide arrester (MOV) that provides superior protection against lightning strikes and surges. This MOV block is designed to be used with DC Arresters and is suitable for many high-voltage applications. It is capable of withstanding multiple lightning strikes and surges, making it an ideal choice for your lightning protection needs. With its high-quality components, the MOV is designed to provide reliable protection against lightning and other power surges. Invest in the D78H35.4DC MOV for DC Arresters and ensure that your property is safe from the harmful effects of lightning and other power surges.
Type | D78H22.5DC |
Nominal discharge current In kA | 20 |
Suggested rated voltage kV | |
Diameter mm | 78±1 |
Height mm | 22.5±0.3 |
AVG Gradient V/mm | 205 |
DC U1mA kV | 4.61±0.30 |
Iref mA | 5 |
Uref kV | 3.26 |
Ures kV | 8.21±0.54 |
8/20uS repetitive charge transfer Qrs C | |
2ms repetitive charge transfer Qrs C | 3.6 |
2ms duration of rectangular impulse current A | 2000 |
4/10µs high current test kA | 100 |
Accelerated ageing test Kct | ≤ 1.0 |
Note:
The nouns, parameters and corresponding test methods in this parameter list conform to the standards of IEC60099-4:2014 and GB11032-2020.
The rated voltage, power frequency reference current and power frequency reference voltage are reference values.
The 2ms square wave tolerance value is based on the declared current/2ms repetitive charge transfer charge Qrs=423, if the actual test waveform 2ms current/2mS repetitive charge transfer charge Qrs is not equal to 423, it should be corrected according to the actual 2ms current waveform and Qrs value.
The charging rate of the aging test was 90%.
The number of pulses for the high current withstand value is two.
The D78H35.4DC MOV for DC Arresters is a high-quality product designed to protect electrical installations from lightning and other overvoltage surges. The product is composed of a metal oxide varistor (MOV) connected in series with a spark gap, which acts as an arrester for both lightning and DC overvoltage. This product is designed for use in electrical installations, providing reliable protection and excellent performance. It is a great choice for ensuring safety and reliability in a variety of applications. As a leading zinc oxide varistor manufacturer, we ensure that our D78H35.4DC MOV for DC Arresters are made with the highest quality materials for optimal performance. Our metal oxide varistor (MOV) and ZnO blocks are meticulously crafted to provide superior protection against overvoltage, making them a trusted choice for various electrical applications.
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