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
The Russian permanent representative to the UN censured the West for its confrontational rackets at the UN Security Council
September 17, 2025
The Russian permanent representative to the UN censured the West for its confrontational rackets at the UN Security Council
The Chinese permanent representative to the United Nations strongly decried the Israeli attack on Qatar at an emergency open sessi
September 17, 2025
The Chinese permanent representative to the United Nations strongly decried the Israeli attack on Qatar at an emergency open sessi
Venezuela is making full preparations to defend the country from the growing threat of aggression by the US. The Venezuelan
September 17, 2025
Venezuela is making full preparations to defend the country from the growing threat of aggression by the US. The Venezuelan
The Iraqi president called on regional countries to unite against Israel’s invasion in a telephone conversation with the Emir of Q
September 17, 2025
The Iraqi president called on regional countries to unite against Israel’s invasion in a telephone conversation with the Emir of Q
The Amnokgang Sports Club is the sports organization which was formed for the first time in the DPRK. According to a state measure
September 17, 2025
The Amnokgang Sports Club is the sports organization which was formed for the first time in the DPRK. According to a state measure
A ceremony for moving into new houses took place at the Yonghung Farm in Sijung County of Jagang Province. Present there were
September 17, 2025
A ceremony for moving into new houses took place at the Yonghung Farm in Sijung County of Jagang Province. Present there were
The Amisan Motor Service Centre and the Hwasong Video Game Centre have been successfully built in the Hwasong area of Pyongyang,
September 17, 2025
The Amisan Motor Service Centre and the Hwasong Video Game Centre have been successfully built in the Hwasong area of Pyongyang,
The brown bears in Ryongnim inhabit an area over 1 400 metres above sea level in a region where there stand such high peaks as Wag
September 16, 2025
The brown bears in Ryongnim inhabit an area over 1 400 metres above sea level in a region where there stand such high peaks as Wag
The DPRK is rich in medicinal herb resources. According to experts, the country is a habitat of various wild medicinal herbs in
September 16, 2025
The DPRK is rich in medicinal herb resources. According to experts, the country is a habitat of various wild medicinal herbs in
The UN General Assembly adopted on September 12 a resolution approving the New York declaration on the peaceful settlement of the
September 16, 2025
The UN General Assembly adopted on September 12 a resolution approving the New York declaration on the peaceful settlement of the
Noble and beautiful virtues and traits of helping and leading one another forward prevail in the DPRK. All the Korean people
September 16, 2025
Noble and beautiful virtues and traits of helping and leading one another forward prevail in the DPRK. All the Korean people
The respected Comrade Kim Jong Un sent a birthday spread to Yun Kwang Hung, a woman centenarian living in neighbourhood unit No.
September 16, 2025
The respected Comrade Kim Jong Un sent a birthday spread to Yun Kwang Hung, a woman centenarian living in neighbourhood unit No.
A technical lecture on paddy-field fish farming took place at the Agricultural Commission on September 12 through video
September 15, 2025
A technical lecture on paddy-field fish farming took place at the Agricultural Commission on September 12 through video
Lots of harmful factors that are detrimental to human health exist around people and they are becoming the causes of different
September 15, 2025
Lots of harmful factors that are detrimental to human health exist around people and they are becoming the causes of different
The Israeli war maniacs made an air raid on Doha, the capital of Qatar, on September 9. The Israeli authorities declared that it
September 15, 2025
The Israeli war maniacs made an air raid on Doha, the capital of Qatar, on September 9. The Israeli authorities declared that it
The Tonghungsan ginkgo tree at the foot of Mt Tonghung in Hamhung, South Hamgyong Province, was planted in around 1600.The tree is
September 15, 2025
The Tonghungsan ginkgo tree at the foot of Mt Tonghung in Hamhung, South Hamgyong Province, was planted in around 1600.The tree is
Kim Yo Jong, deputy department director of the Central Committee of the Workers' Party of Korea, issued the following press
September 15, 2025
Kim Yo Jong, deputy department director of the Central Committee of the Workers' Party of Korea, issued the following press
Modern high-rise apartment houses have newly been built in Wonsan City, Kangwon Province. Hundreds of dwelling houses, service
September 15, 2025
Modern high-rise apartment houses have newly been built in Wonsan City, Kangwon Province. Hundreds of dwelling houses, service
Choe Ryong Hae, member of the Presidium of the Political Bureau of the Central Committee of the Workers' Party of Korea and
September 15, 2025
Choe Ryong Hae, member of the Presidium of the Political Bureau of the Central Committee of the Workers' Party of Korea and
Pak Jong Chon, vice-chairman of the Central Military Commission of the Workers' Party of Korea, on September 13 issued the
September 15, 2025
Pak Jong Chon, vice-chairman of the Central Military Commission of the Workers' Party of Korea, on September 13 issued the
More Articles
