Mine Flameproof Mobile Substation (KBSGZY Series)
Category:
Keywords: Electrical Equipment
- Description
Mine Flameproof Mobile Substation (KBSGZY Series)
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- Commodity name: Mine Flameproof Mobile Substation (KBSGZY Series)
It is the core explosion-proof power supply equipment for underground coal mines (including high-altitude mines), specially designed for environments with explosion hazards from gas and coal dust.
Core Parameters (Standard Models)
1. Model Meaning
- K: Mining
- B: Flameproof Type (Ex d I Mb)
- S: Three-phase
- G: Dry-type (non-oil-immersed)
- Z: Combined
- Y: Mobile
- Example: KBSGZY-1250/10
- 1250: Rated capacity 1250 kVA
- 10: High-voltage side 10 kV
2. Electrical Parameters (Mainstream Specifications)
- Rated capacity: 50 ~ 3150 kVA
- High-voltage rating: 6 kV / 10 kV
- Low-voltage rating: 1140 V / 690 V / 400 V
- Frequency: 50 Hz
- Phase number: 3-phase
- Cooling method: Dry-type natural cooling (AN/AN)
- Insulation class: Class H (heat resistance up to 180℃)
- Protection class: IP54 (dustproof, splash-proof)
- Short-circuit impedance: 4% ~ 6%
- Connection group: Yyn0 / Dyn11
3. Environment & Structure
- Altitude: Standard ≤ 1000 m; customized for high altitude (Qinghai/Tibet) with capacity derating and enhanced insulation
- Ambient temperature: -20℃ ~ +40℃ (cold-resistant type required for high-altitude areas)
- Inclination: ≤ 15°
- Dimensions: L 4–5 m × W 1.2–1.4 m × H 1.6–1.8 m
- Weight: 3–12 tons (varies with capacity)
4. Standard Safety Protections
- Short-circuit, overload, earth leakage, earth leakage lockout
- Over-voltage, under-voltage, over-temperature protection
- Electrical interlock for high and low voltage switches, power-off interlock when opening the cover
Application Scenarios
1. Core Scenario: Underground Coal Mines (Mandatory)
- High-gas / coal-gas outburst mines (with explosion hazards)
- Fully-mechanized coal mining face: shearers, scraper conveyors, hydraulic supports
- Fully-mechanized excavation face: roadheaders, belt conveyors, local fans
- Temporary power supply for mining areas: movable with the advancement of working faces
- Emergency backup: alternative to fixed substations
2. Extended Scenarios (Non-coal Mines / Surface)
- Metallic / non-metallic mines (with flammable gas or dust)
- Tunnel engineering (explosion-proof and mobile requirements)
- Chemical, port and other flammable, explosive, humid and dusty environments
3. Special Requirements for High-Altitude Mines (e.g. Guoluo, Qinghai)
- Customized high-altitude type required: enhanced insulation, capacity derating (≈10% per 1000 m increase)
- Adopt low-temperature resistant insulation structure and cold-proof design
- All-sealed structure to resist frost heave
Differences from Conventional Transformers
- Flameproof enclosure: withstands internal explosions without igniting external gas
- Dry-type insulation: oil-free, fireproof, suitable for underground mines
- Movable structure: compact, with rollers, adaptable to mine roadways
- Enhanced protection: full electrical interlocks and multiple protections
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Henan Jinyu Electric Co., Ltd.
Service Hotline:400-688-0375
Tel:+86-18103909516
Email:hnjydq1999@126.com
Address: South Section of Chuangye Road, Ji County Industrial Cluster, Henan Province, Central Plains Electric City
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