The D105 Series MOV for Substation Arrester is an advanced, reliable, and robust MOV varistor block designed to provide superior protection from power surges, lightning strikes, and other electrical events. It features a 3000A surge current rating, high energy absorption capacity, and an adjustable response time for a wide variety of applications. This block is ideal for use in substations, providing reliable protection against voltage transients and other electrical disturbances. Its compact size also makes it suitable for use in confined spaces.
Type | D105H22.5 |
Nominal discharge current In kA | 20 |
Suggested rated voltage kV | 3.41 |
Diameter mm | 105±1.5 |
Height mm | 22.5±0.3 |
AVG Gradient V/mm | 210 |
DC U1mA kV | 4.73±0.30 |
Iref mA | 5 |
Uref kV | 3.41 |
Ures kV | 7.42±0.48 |
8/20uS repetitive charge transfer Qrs C | |
2ms repetitive charge transfer Qrs C | 4.5 |
2ms duration of rectangular impulse current A | 2500 |
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 D105 Series MOV for Substation Arrester is a highly reliable and cost-effective solution for protecting electrical substations from lightning strikes and other power surges. Its square wave current of up to 3000A offers superior protection against transients, while its compact size allows for easy installation and maintenance. Additionally, its temperature-independent response characteristics ensure consistent performance in a wide range of temperatures. As a leading metal oxide varistor manufacturer, we at TGE are committed to providing top-quality products like the D105 Series MOV for Substation Arrester. Understanding the zinc oxide varistor function is key to appreciating the efficiency of our MOV disc, which is designed to absorb and dissipate high-energy voltage spikes, ensuring the safety and longevity of your electrical systems.
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