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400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
Specifications
Description
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment

HENTG POWER specializes in certified mining explosion-proof transformers designed for harsh underground environments. With full compliance to MA/ATEX/KA standards, our transformers deliver maximum safety, reliability, and efficiency for mining operations. Backed by 15+ years of manufacturing experience and ISO-certified facilities, we provide customized voltage levels, durable construction, and complete after-sales support to ensure stable power supply in demanding applications.

Product Specifications
Model KBSG
Transformer Type Dry type
Voltage 3.3kV/0.66KV
Frequency 50Hz
Number of Phases 3 phases
Coil Material Copper/Aluminum
Insulation Class H/C
Connection Method Yyo/Dyn11
Cooling Method AN, GNAN
Protection Class IP54/IP65/IP66/IP67
Explosion-Proof Type Exd
Rated Capacity 400KVA
No-load Loss (KW) 980
Load Loss (KW) 3990
No-load Current (%) 1
Impedance Voltage (%) 4
Outline Dimension 2530*1100*1150
Weight (KG) 2660
Protection & Control System - Intelligent Early Warning
Critical Issue: 1 Hour of Underground Shutdown = Hundreds of Thousands in Losses! When underground power is interrupted, mining equipment halts, ventilation fails, and drainage pumps stop. This not only causes massive economic loss but can trigger safety incidents like gas accumulation and flooding.
The HENTG POWER KBSG Series features a "Comprehensive Protection + Intelligent Monitoring" system that blocks faults in real-time and warns of hidden dangers in advance.
Protection System vs. Ordinary Transformers
  • Functions: Comprehensive (Overload/Short circuit/Temp/Leakage/Voltage)
  • Early Warning: 24-48 Hours Advance Notice
  • Monitoring: Remote Real-Time + Historical Tracing
  • Fault Location: Precise display of Type & Location
  • Anti-Interference: High resistance to electromagnetic noise
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment 400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
5-Layer Defense + Intelligent Monitoring
1. Comprehensive Fault Protection: Real-Time Risk Blocking
  • Overload Protection: Automatically limits current when load exceeds 1.2x rated value; triggers shutdown at 1.5x to protect core components
  • Short Circuit Protection: Features instantaneous trip device - cuts power within 0.1 seconds of line short circuit
  • Over-temperature Protection: Built-in PT100 sensors monitor coil temperature with warnings at >135℃ and automatic shutdown at >150℃
  • Leakage Lockout Protection: Immediately locks power supply upon detecting line leakage
  • Voltage Protection: Adjusts output or shuts down if voltage fluctuates >±10%
2. Intelligent Monitoring: Remote Status Mastery
  • Real-time Data Collection: Uploads voltage, current, temperature, and load rate data via RS485 interface
  • Fault Warning Push: Detects abnormalities and pushes alerts via SMS/APP/Central Control 24-48 hours in advance
  • Historical Data Tracing: Automatically stores operating data for more than 1 year for retrospective analysis
3. Stability & Anti-Interference
EMC design resists electromagnetic interference from heavy mining equipment and high-voltage switches. Rugged control module housed in IP65 waterproof/dustproof shell.
4. Maintenance Efficiency: Fast Fault Location
  • Visual Diagnostics: High-definition display shows fault types and specific locations
  • Remote Reset: Allows remote resetting of minor faults via central control system
Production and Transportation Process
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
About HENTG POWER
Who are we?
HENTG POWER is a professional designer, manufacturer and installer of power system solutions worldwide, founded in 2011, occupying 100,000 square meters and specializing in reliable, high-performance solutions for global power systems.
How can we guarantee quality?
We provide pre-production samples, conduct final inspections, and offer QC & test reports. Our factory manufactures oil type and dry type distribution transformers up to 500KV 480MVA power transformers, GIS, switchgear, and substations, compliant with ANSI/IEEE/DOE2016/CSA/IEC60076 standards with a 2+ year guarantee.
Why choose us?
  • Professional drawing and technical teams that confirm all drawing contents within 7 days
  • Team of 30+ senior engineers provides 24-hour online service with responses within 30 minutes
Our Services
We accept OEM and negotiated business payment terms.
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
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400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment

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400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment
400kVA 3.3kV/0.66kV Flameproof Transformer for Underground Mining Equipment

Hunan Hentg Power Electric Technology Co., Ltd.

Verified Supplier
1 Years
hunan, changsha
Since 2011
Business Type :
Manufacturer
Main Products :
Oil Immersed Transformer, Dry Type Transformer, Compact Substation Transformer
Total Annual :
300-500MVA
Employee Number :
200~250
Certification Level :
Verified Supplier
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