The D42 Series MOV for Substation Arrester is designed for heavy-load surge protection in 35kV substations. It utilizes a robust MOV varistor material to absorb and dissipate over-voltage transients, ensuring the safety of your equipment and personnel. It also features a dielectric withstand voltage of up to 50kV, a current rating of up to 100A, and a life expectancy of up to 20 years. As a professional zinc oxide varistor manufacturer, we are sure that with its easy installation and maintenance features, it is the perfect solution for your surge protection needs.

Type | D42H18.5 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 2.88 |

Diameter mm | 42±0.8 |

Height mm | 18.5±0.3 |

AVG Gradient V/mm | 235 |

DC U1mA kV | 4.35±0.30 |

Iref mA | 3 |

Uref kV | 3.07 |

Ures kV | 7.7±0.54 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 0.9 |

2ms duration of rectangular impulse current A | 500 |

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.

Type | D42H19.5 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 2.84 |

Diameter mm | 42±0.8 |

Height mm | 19.5±0.3 |

AVG Gradient V/mm | 220 |

DC U1mA kV | 4.29±0.30 |

Iref mA | 3 |

Uref kV | 3.03 |

Ures kV | 7.59±0.54 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 0.9 |

2ms duration of rectangular impulse current A | 500 |

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.

Type | D42H20.5 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 2.99 |

Diameter mm | 42±0.8 |

Height mm | 20.5±0.3 |

AVG Gradient V/mm | 220 |

DC U1mA kV | 4.51±0.30 |

Iref mA | 3 |

Uref kV | 3.19 |

Ures kV | 7.98±0.54 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 0.9 |

2ms duration of rectangular impulse current A | 500 |

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.

Type | D42H22 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 3.27 |

Diameter mm | 42±0.8 |

Height mm | 22±0.3 |

AVG Gradient V/mm | 220 |

DC U1mA kV | 4.91±0.30 |

Iref mA | 3 |

Uref kV | 3.47 |

Ures kV | 8.68±0.54 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 0.9 |

2ms duration of rectangular impulse current A | 500 |

4/10µs high current test kA | 100 |

Accelerated ageing test Kct | ≤ 1.0 |

Note:

The charging rate of the aging test was 90%.

The number of pulses for the high current withstand value is two.

Type | D42H23.5 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 3.45 |

Diameter mm | 42±0.8 |

Height mm | 23.5±0.3 |

AVG Gradient V/mm | 220 |

DC U1mA kV | 5.17±0.30 |

Iref mA | 3 |

Uref kV | 3.66 |

Ures kV | 9.15±0.54 |

8/20uS repetitive charge transfer Qrs C | 0.6 |

2ms repetitive charge transfer Qrs C | 1.1 |

2ms duration of rectangular impulse current A | 600 |

4/10µs high current test kA | 100 |

Accelerated ageing test Kct | ≤ 1.0 |

Note:

The charging rate of the aging test was 90%.

The number of pulses for the high current withstand value is two.

Type | D42H24 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 3.52 |

Diameter mm | 42±0.8 |

Height mm | 24±0.3 |

AVG Gradient V/mm | 225 |

DC U1mA kV | 5.40±0.30 |

Iref mA | 3 |

Uref kV | 3.73 |

Ures kV | 9.56±0.54 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 1.1 |

2ms duration of rectangular impulse current A | 600 |

4/10µs high current test kA | 100 |

Accelerated ageing test Kct | ≤ 1.0 |

Note:

The charging rate of the aging test was 90%.

The number of pulses for the high current withstand value is two.

Type | D42H26.4 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 4.43 |

Diameter mm | 42±0.8 |

Height mm | 26.4±0.3 |

AVG Gradient V/mm | 250 |

DC U1mA kV | 6.60±0.30 |

Iref mA | 3 |

Uref kV | 4.67 |

Ures kV | 11.55±0.54 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 0.9 |

2ms duration of rectangular impulse current A | 500 |

4/10µs high current test kA | 100 |

Accelerated ageing test Kct | ≤ 1.0 |

Note:

The charging rate of the aging test was 90%.

The number of pulses for the high current withstand value is two.

Type | D42H29 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 4.32 |

Diameter mm | 42±0.8 |

Height mm | 29±0.3 |

AVG Gradient V/mm | 220 |

DC U1mA kV | 6.41±0.30 |

Iref mA | 3 |

Uref kV | 4.57 |

Ures kV | 11.35±0.63 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 0.9 |

2ms duration of rectangular impulse current A | 500 |

4/10µs high current test kA | 100 |

Accelerated ageing test Kct | ≤ 1.0 |

Note:

The charging rate of the aging test was 90%.

The number of pulses for the high current withstand value is two.

Type | D42H29.4 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 4.93 |

Diameter mm | 42±0.8 |

Height mm | 29.4±0.3 |

AVG Gradient V/mm | 250 |

DC U1mA kV | 7.35±0.35 |

Iref mA | 3 |

Uref kV | 5.2 |

Ures kV | 12.86±0.63 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 0.9 |

2ms duration of rectangular impulse current A | 500 |

4/10µs high current test kA | 100 |

Accelerated ageing test Kct | ≤ 1.0 |

Note:

The charging rate of the aging test was 90%.

The number of pulses for the high current withstand value is two.

Type | D42H35 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 5.51 |

Diameter mm | 42±0.8 |

Height mm | 35±0.3 |

AVG Gradient V/mm | 235 |

DC U1mA kV | 8.23±0.40 |

Iref mA | 3 |

Uref kV | 5.82 |

Ures kV | 14.48±0.72 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 0.9 |

2ms duration of rectangular impulse current A | 500 |

4/10µs high current test kA | 100 |

Accelerated ageing test Kct | ≤ 1.0 |

Note:

The charging rate of the aging test was 90%.

The number of pulses for the high current withstand value is two.

Type | D42H36 |

Nominal discharge current In kA | 10 |

Suggested rated voltage kV | 5.37 |

Diameter mm | 42±0.8 |

Height mm | 36±0.3 |

AVG Gradient V/mm | 220 |

DC U1mA kV | 7.95±0.35 |

Iref mA | 3 |

Uref kV | 5.68 |

Ures kV | 14.07±0.72 |

8/20uS repetitive charge transfer Qrs C | 0.5 |

2ms repetitive charge transfer Qrs C | 0.9 |

2ms duration of rectangular impulse current A | 500 |

4/10µs high current test kA | 100 |

Accelerated ageing test Kct | ≤ 1.0 |

Note:

The charging rate of the aging test was 90%.

The number of pulses for the high current withstand value is two.

As a reliable metal oxide varistor mov manufacturer, our D42 Series MOV for Substation Arrester is a robust and reliable surge protection solution designed to protect critical electrical systems from lightning strikes and other transient over-voltages. It is designed to withstand high surge currents and provide reliable protection to the equipment by limiting the transient over-voltage. It features high energy absorption capacity, high surge current capability, and low voltage drop, making it an ideal choice for a wide range of applications. Additionally, it is designed to be easy to install and maintain, making it an ideal choice for any industrial environment.

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