| Main Specification | |
| Transformer Type | Dry type |
| Rated capacity | Up to 8000kVA |
| Rated voltage | Up to 11kV |
| Frequency | 50/60Hz |
| Phase | 3 Phase |
| Winding material | Copper /Aluminum |
| Insulation class | H(180℃）, C (220℃） |
| Vector group | Dyn11, YNd1d1，Yyn |
| Cooling |
ANAN，GNAN |
| Protection Enclosure | IP00 to IP56 |
| Explosion-proof type | ExdIMb |
| Zone | Zone 1, Zone 2 |
| Tank Paining | C4 and C5 on resquest |
| standard | IEC, AS, EN, IEEE/ANSI, GOST |
Varelen has more than 30 years of experience in the provision of flameproof transformers for use in hazardous and gassy atmospheres above and below ground, and non-flameproof transformers (ANAN/ONAN/KNAN/GNAN) for Mining, Tunnelling and industrial applications.
HV and LV switches have three configuration options:
A) Mining Flameproof HV vacuum switch + Mining Flameproof LV protection box
B) Mining Flameproof HV vacuum switch + Mining Flameproof LV feed switch
C) Mining Flameproof HV vacuum switch + Mining Flameproof LV multi-loop combined switch(LMCC)
Mining flameproof substations outline drawing
Varelen has launched online FAT plan for customers. Our factory can make acceptance testing ( either witnessed and on-line) in order to show all technical and quality requirements have been done before shipment.
Varelen fully meets ISO 9001, ISO 14001,and ISO 45001 certifications and standards. Our products meet GB, IEC, IEEE, NEMA, CSA, AS, GOST and other international and domestic electrical engineering standards including UL, CE, BV and EU.
Routine test
Type test
Special test
Our mining flameproof substations are engineered for harsh underground coal mining power supply systems, providing a safe mobile substation solution in methane-rich Zone 1 and Zone 2 environments, including mining, tunnelling, rail, energy, utilities and heavy industry, our product ranges deliver safe, reliable and fully engineered systems built for performance, durability and long-term operation.
A: Absolutely. Our flameproof mining substations use high-temperature resistant, moisture-proof, dust-proof, and corrosion-resistant materials. They are designed to operate reliably in high humidity, dust, and high-temperature mine conditions.
Yes. Varelen designs and manufactures custom hazardous location transformers to meet project-specific requirements. Options include special voltage ratings, enclosure materials, temperature-rise classes, and mounting configurations. Each custom design is fully tested and certified for its intended hazardous classification, ensuring compliance, reliability, and safe operation in demanding environments.
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