Welcome to the world of DC Arresters and their metal oxide varistor (MOV) components! Our D99H21.4 MOV product is the perfect choice for anyone looking for reliable and efficient protection against overvoltage and transients. The MOVs are designed to provide a low impedance path to the ground, allowing the unwanted voltage to be discharged while keeping the rest of your system safe and secure. Our product is designed to handle a variety of DC applications and is highly reliable with excellent long-term stability. As a leading zinc oxide varistor manufacturer, our MOVs are also highly cost-effective, providing a great value for your money. With our MOVs, you can rest assured that your system is protected against any sudden voltage spikes. Thanks for choosing our D99H21.4 MOV for DC Arresters, and enjoy the highest quality protection!
Type | D99H21.4HG |
Nominal discharge current In kA | 20 |
Suggested rated voltage kV | 5.3 |
Diameter mm | 99±1 |
Height mm | 21.4±0.3 |
AVG Gradient V/mm | 360 |
DC U1mA kV | 7.70±0.45 |
Iref mA | 5 |
Uref kV | 5.3 |
Ures kV | 11.60±0.72 |
8/20uS repetitive charge transfer Qrs C | |
2ms repetitive charge transfer Qrs C | 2.7 |
2ms duration of rectangular impulse current A | 1500 |
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.
D99H21.4 MOV for DC Arresters is a kind of metal oxide varistor (MOV) designed for use in DC Arresters. It is a high-quality, reliable and versatile MOV varistor that is highly durable and resistant to extreme temperatures and moisture. The metal oxide varistor uses are wide and can be used in a variety of environments. Its compact design makes it ideal for installations where space is limited. Its high performance ensures its effectiveness in providing effective protection against surges, transients and other forms of electrical interference. With its long lasting materials and construction, this product is sure to provide long lasting protection for your electrical systems.
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