The D85 Series MOV for Substation Arrester is a surge protection device designed for 500kV applications. It provides excellent protection against lightning strikes, power surges and other transients. The D85 Series MOV is a lightweight MOV varistor block with a high current carrying capacity and a wide operating temperature range. It is designed to provide reliable protection for substation electronics as well as personnel and equipment nearby. The device is also designed to be easy to install and maintain, making it a perfect choice for any high voltage project.
Type | D85H24 |
Nominal discharge current In kA | 20 |
Suggested rated voltage kV | 4.05 |
Diameter mm | 86±1 |
Height mm | 24±0.3 |
AVG Gradient V/mm | 240 |
DC U1mA kV | 5.76±0.30 |
Iref mA | 5 |
Uref kV | 4.07 |
Ures kV | 9.27±0.49 |
8/20uS repetitive charge transfer Qrs C | |
2ms repetitive charge transfer Qrs C | 4 |
2ms duration of rectangular impulse current A | 2200 |
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 D85 Series MOV for Substation Arrester is a type of MOV block used in 500kV heavy load surge arresters. It is a reliable and efficient protection device that is designed to protect electrical systems from high-voltage surges. It features a combination of high-grade zinc oxide varistors and a low-resistance metal oxide film, providing superior protection for electrical components and systems. It is easy to install and offers excellent safety and performance. As a leading zinc oxide varistor manufacturer, we ensure that our D85 Series MOV for Substation Arrester is crafted with the highest quality materials for optimal performance. Our metal oxide varistor MOV and ZnO blocks are meticulously designed to offer superior protection against high-voltage surges, making them a trusted choice for various electrical applications.
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