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d70 series high gradient mov for gis arresters
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mov datasheet
metal oxide varistors how does it work
metal oxide varistor datasheet
d70 series high gradient mov for gis arresters
mov varistor datasheet
mov datasheet pdf
mov datasheet

D70 Series High Gradient MOV Block for GIS Arresters

The D70 Series High Gradient MOV for GIS Arresters is a reliable and highly efficient MOV varistor. It is designed to provide superior protection against transient overvoltages and surges in 110-220kV gas-insulated switchgear (GIS) applications. The MOV varistor has a high current carrying capacity and a higher rated voltage than other MOV blocks, ensuring reliable protection. It is also designed to withstand extreme temperatures, making it suitable for a range of industrial and commercial applications. The D70 Series High Gradient MOV for GIS Arresters is a robust, cost-effective solution for protecting valuable equipment against damage due to transient overvoltages. Its low profile design and compact size make it an ideal choice for GIS applications where space is limited. With its high performance and long-lasting reliability, the D70 Series High Gradient MOV for GIS Arresters is the perfect choice for protecting your valuable equipment.

TGE Specification of D70H21.4HG Metal Oxide Arrester Blocks


Type

D70H21.4HG

Nominal discharge current In kA

10

Suggested rated voltage kV

5.44

Diameter mm

70±1

Height mm

21.4±0.3

AVG Gradient V/mm

370

DC U1mA kV

7.92±0.45

Iref mA

5

Uref kV

5.6

Ures kV

12.59±0.74

8/20uS repetitive charge transfer Qrs C


2ms repetitive charge transfer Qrs C

1.5

2ms duration of rectangular impulse current A

800

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.




TGE Specification of D70H22.5HG Metal Oxide Arrester Blocks


Type

D70H22.5HG

Nominal discharge current In kA

10

Suggested rated voltage kV

5.22

Diameter mm

70±1

Height mm

22.5±0.3

AVG Gradient V/mm

330

DC U1mA kV

7.43±0.45

Iref mA

5

Uref kV

5.33

Ures kV

11.89±0.75

8/20uS repetitive charge transfer Qrs C


2ms repetitive charge transfer Qrs C

1.5

2ms duration of rectangular impulse current A

800

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.




Features of D70 Series High Gradient MOV for GIS Arresters


Features of D70 Series High Gradient MOV for GIS Arresters


The D70 Series High Gradient MOV for GIS Arresters is a high-performance metal oxide varistor (MOV) block designed for 110-220kV GIS surge arresters. It offers superior performance with high-grade ZnO material and has a high energy absorption capacity. The built-in temperature compensation circuit ensures the varistor block can withstand high temperatures of up to 180°C. It has a wide operating range and is designed with a differential lead structure for better electrical stability. The MOV is highly reliable and has a long life expectancy. It is also resistant to corrosion and is non-flammable. The D70 series provides excellent surge protection for GIS arresters and is an ideal solution for high-voltage applications.

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Do you have any questions regarding MOV blocks or MOV disks?
Do you have any questions regarding MOV blocks or MOV disks?

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