The High-Tech Research & Development Centre of Kim Il Sung University has recently developed 6kV and 10kV zinc oxide arresters with effective protection against overvoltage.
As a technical power control device to prevent damage from thunderbolt or impulse-wave voltage, the lightning arrester has a wide application.
Members of the electronic materials research group including Mun Chol Ho, PhD, buckled down to the research into the fourth-generation nonlinear resistance, an essential component of arrester, in order to develop a new one that suits the specific conditions of the country.
They deepened the research as they focused on reproducibility while meeting the technical indices conflicting with each other in the making of semiconductor ceramics.
In the course of this, they found out a new materials composition method of doubling the nonlinear zinc oxide resistance and established a technology of miniaturizing and lightening the arrester by making the particles smaller.
The new type of arrester which is less than half the size, weight and manufacturing cost as compared to the previous arresters has scientifically proved economical through the trial introduction and state certification.
“The application of 6kV zinc oxide arrester to our substation has remarkably reduced the rate of accident of peripheral electric equipment caused by thunderbolt as compared to previously and also improved the operational safety in the relevant voltage system,” said Kim Pyong Su, director of the Jongju City Power Distribution Station, North Phyongan Province.
More From Pyongyang Times
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People’s
December 28, 2025
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People’s
A national flag-raising and oath-taking ceremony took place at the Mansudae Assembly Hall on December 27 to mark Constitution Day
December 28, 2025
A national flag-raising and oath-taking ceremony took place at the Mansudae Assembly Hall on December 27 to mark Constitution Day
People in Kaephung District of Kaesong Municipality greeted the moment of a significantly auspicious event. An inauguration
December 28, 2025
People in Kaephung District of Kaesong Municipality greeted the moment of a significantly auspicious event. An inauguration
In Yomju County, a northwestern coastal area of the DPRK, modern regional-industry factories have been built as a solid foundation
December 28, 2025
In Yomju County, a northwestern coastal area of the DPRK, modern regional-industry factories have been built as a solid foundation
Modern houses have been built at farms in Nampho Municipality, manifesting the change of the socialist modern villages that are
December 28, 2025
Modern houses have been built at farms in Nampho Municipality, manifesting the change of the socialist modern villages that are
Fashionable dwelling houses have appeared at the Pumin and Songhung farms and the Toksong Apple Farm in Hamhung City of South
December 28, 2025
Fashionable dwelling houses have appeared at the Pumin and Songhung farms and the Toksong Apple Farm in Hamhung City of South
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People's
December 28, 2025
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People's
Ryanggang Province built a new black swan breeding base at the Kapsan Duck Farm under the provincial rural economy committee. The
December 28, 2025
Ryanggang Province built a new black swan breeding base at the Kapsan Duck Farm under the provincial rural economy committee. The
Kim Jong Un, president of the State Affairs of the Democratic People's Republic of Korea, sent a message of greeting to Vladimir
December 28, 2025
Kim Jong Un, president of the State Affairs of the Democratic People's Republic of Korea, sent a message of greeting to Vladimir
The respected Comrade Kim Jong Un received a flower basket from Thongloun Sisoulith, general secretary of the Central Committee of
December 28, 2025
The respected Comrade Kim Jong Un received a flower basket from Thongloun Sisoulith, general secretary of the Central Committee of
Kim Jong Un, president of the State Affairs of the Democratic People’s Republic of Korea, received a message of greeting from
December 28, 2025
Kim Jong Un, president of the State Affairs of the Democratic People’s Republic of Korea, received a message of greeting from
Russian President Vladimir Putin referred to the achievements made by the Eurasian Economic Union on December 21. Saying that the
December 27, 2025
Russian President Vladimir Putin referred to the achievements made by the Eurasian Economic Union on December 21. Saying that the
The December 15 Quality Medals were awarded to the best products of the Phyongsong Bag Factory, the Songdowon General Foodstuff
December 27, 2025
The December 15 Quality Medals were awarded to the best products of the Phyongsong Bag Factory, the Songdowon General Foodstuff
Under the care of the Workers' Party of Korea, modern houses were built at the Tongsan Industrial Crop Farm under the North
December 26, 2025
Under the care of the Workers' Party of Korea, modern houses were built at the Tongsan Industrial Crop Farm under the North
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People's
December 26, 2025
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People's
This year, too, more than 10 women were awarded the Communist Mother Honour Prize on the occasion of Mother's Day (November 16).
December 26, 2025
This year, too, more than 10 women were awarded the Communist Mother Honour Prize on the occasion of Mother's Day (November 16).
Memorial meetings, seminars and film shows were hosted by the Khabarovsk Territorial, Amur Regional and Maritime Territorial
December 26, 2025
Memorial meetings, seminars and film shows were hosted by the Khabarovsk Territorial, Amur Regional and Maritime Territorial
The Iranian Foreign Ministry issued a statement on December 17 to denounce the US for making military threats against Venezuela.Th
December 26, 2025
The Iranian Foreign Ministry issued a statement on December 17 to denounce the US for making military threats against Venezuela.Th
The Chinese permanent representative to the United Nations stressed that a comprehensive and permanent ceasefire should be
December 26, 2025
The Chinese permanent representative to the United Nations stressed that a comprehensive and permanent ceasefire should be
Officials and working people in Ryanggang Province remodelled the provincial institute of agricultural science. The completion of
December 26, 2025
Officials and working people in Ryanggang Province remodelled the provincial institute of agricultural science. The completion of
More Articles
