The issue of controlling the operability and intrinsic safety of coal mine electrical equipment has been considered. An indirect criterion for assessing intrinsic safety operability based on the system's response to the connection and disconnection of the control oрmic load has been proposed.
Using a mathematical modeling method, the functionality of discharge-reduction devices has been studied during the commutation of an ohmic load over a wide range of resistance. As shown, analyzing transient processes in the power source circuit output during connection and disconnection of the control load provides information on the operability of intrinsic safety without the use of explosion chambers. The developed method provides a foundation for developing such devices and for complying with the requirements of regulatory documents for the recurrent control of their parameters in operational mode.
GOST 22782.5—78. Explosionproof electrical apparatus with the type of protection “ intrinsically-safe electrical circuit”. Technical requirements and test methods. Available at: https://docs.cntd.ru/document/1200011537 (accessed: January 19, 2026). (In Russ.).
2. ГОСТ 31610.11—2014. Взрывоопасные среды. Часть 11. Оборудование с видом взрывозащиты «искробезопасная электрическая цепь «i». URL: https://docs.cntd.ru/document/1200121999 (дата обращения: 19.01.2026).
GOST 31610.11—2014. Explosive atmospheres. Part 11. Equipment with type of explosion protection “intrinsically safe electrical circuit “i”. Available at: https://docs.cntd.ru/document/1200121999 (accessed: January 19, 2026). (In Russ.).
3. GB/T 3836.4—2021. Explosive atmospheres — Part 4: Equipment protection by intrinsic safety “i”. Available at: https://codeofchina.com/standard/GBT3836.4-2021.html (accessed: January 19, 2026).
4. IEC 60079-11:2023. Explosive atmospheres — Part 11: Equipment protection by intrinsic safety “i”. Available at: https://webstore.iec.ch/en/publication/60654 (accessed: January 19, 2026).
5. Инструкция по электроснабжению угольных шахт: федер. нормы и правила в обл. пром. безопасности. Сер. 05. Вып. 60. М.: ЗАО НТЦ ПБ, 2023. 56 с.
Instruction on coal mine power supply: federal rules and regulations in the field of industrial safety. Ser. 05. Iss. 60. Moscow: ZAO NTC PB, 2023. 56 p. (In Russ.).
6. Диденко В.П., Кудинов Ю.В., Булгаков Ю.Ф. Совершенствование способов и средств обеспечения искробезопасности взрывозащищенного электрооборудования // Проблемы горного давления. 2016. № 4 (31). С. 26–48.
Didenko V.P., Kudinov Yu.V., Bulgakov Yu.F. Improving methods and means to ensure intrinsic safety of explosion-proof electric equipment. Problemy gornogo davleniya = Rock pressure issues. 2016. № 4 (31). pp. 26–48. (In Russ.).
7. Didenko V.P. Doskonalenie modelu matematycznego niskoprądowego wyáadowania elektrycznego. Mechanizacja i automatyzacja górnictwa. Katowice: EMAG, 2014. № 2 (516). pp. 5–10.
8. Didenko V.P. Metoda szacowania możliwośc izapłonu przez wyładowanie wobw odach iskrobezpiecznych. Innowacyjne I bezpieczne systemy mechanizacyjne do eksploatacji surowców mineralnych (KOMTECH). Zakopane: KOMAG, 2006. Vol. 2. pp. 5–9.
9. Liu S., Zhao Y. Research on Short-Circuit Discharge Characteristics of Capacitive Circuits Based on Safety Spark Test Apparatus. Mathematical Problems in Engineering. 2014. Vol. 2. DOI: 10.1155/2014/516925
10. Xu Y., Liu T., Chen Y., Li M., Yu D., Yu S.S. Intrinsically safe DAB converter for reliable power supply in harsh environment via extended phase shift pulse train control. IET Power Electron. 2024. Vol. 17. Iss. 16. pp. 2808–2818. DOI: 10.1049/pel2.12781
11. Liu S., Wu H., Wang C., Nie S., Qi L. Inner Intrinsically Safe Criterionand Design Considerations of Buck Converter Basedon EquivalentInductance. Electric Power Componentsand Systems. 2019. Vol. 47. Iss. 3. pp. 248–260. DOI: 10.1080/15325008.2019.1579008
12. MICRO-CAP 12.2.0.5. Бесплатная программа моделирования электрических и электронных схем. URL: https://soft-arhiv.com/load/micro_cap (дата обращения: 19.01.2026).
MICRO-CAP 12.2.0.5. Free software for electric and electronic scheme modeling. Available at: https://soft-arhiv.com/load/micro_cap (accessed: January 19, 2026). (In Russ.).