The D85 Series High Gradient MOV for GIS Arresters is a must-have for any 330kV GIS surge arrester system. This MOV varistor provides ultra-high gradient performance and is designed to effectively protect against high voltage surges in the GIS environment. The series offers a variety of shapes and sizes, including blocks, cubes and rods, to meet the needs of any GIS system. The varistor has very low leakage current and a high current-carrying capacity, ensuring that it withstands the highest levels of electrical pressure. With its durable and reliable construction, the series helps protect against power outages and other hazards. Additionally, it is designed to reduce energy waste and extend the life of the GIS arrester. The D85 Series is the perfect choice for anyone looking for high-performance MOV varistors for their GIS system.
Type | D85H21.4HG |
Nominal discharge current In kA | 20 |
Suggested rated voltage kV | 5.71 |
Diameter mm | 86±1 |
Height mm | 21.4±0.3 |
AVG Gradient V/mm | 370 |
DC U1mA kV | 7.91±0.45 |
Iref mA | 5 |
Uref kV | 5.75 |
Ures kV | 12.12±0.72 |
8/20uS repetitive charge transfer Qrs C | |
2ms repetitive charge transfer Qrs C | 2.2 |
2ms duration of rectangular impulse current A | 1200 |
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 High Gradient MOV for GIS Arresters is a must-have for any lightning or surge arrester. With a MOV block designed to withstand up to 330kV, this product offers superior protection against electrical surges. It is easy to install and its compact size makes it perfect for use in even the smallest of spaces. With its superior performance, this product can provide reliable protection from electrical surges and lightning strikes. This product is perfect for any application requiring a lightning or surge arrester. As a reputable zinc oxide varistor manufacturer, we ensure that our D85 Series High Gradient MOV for GIS Arresters are built with top-notch materials for maximum efficiency. Our metal oxide varistor MOV and ZnO blocks are designed to provide unparalleled protection against electrical surges, making them an ideal choice for various applications.
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