Insulation Electric Power Substation Explosion Proof For Tunnel
Description:
Step down transformers convert electrical voltage from one level or phase configuration usually down to a lower level. They can include features for electrical isolation, power distribution, and control and instrumentation applications. Step down transformers typically rely on the principle of magnetic induction between coils to convert voltage and/or current levels.
Mine use explosion proof dry-type transformer suitable for underground mines containing methane mixture gas and having potential danger of coal dust explosion. The transformers were be worked as the distribution equipment for a large variety of electrical equipment, like pumping station, conveyor, mining machine and so on. The transformer suitable for used in coal mine, non ferrous metal mine and tunneling.
Product standard
GB8286-2005 Mine use explosion proof mobile substation
GB3836.1-2000 Electrical Apparatus for Explosive Gas Atmosphere—Part 1: General
GB3836.2-2000 Electrical Apparatus for Explosive Gas Atmosphere—Part 2: Flameproof enclosure “d”
GB3836.3-2000 Electrical Apparatus for Explosive Gas Atmosphere—Part 3: Increased safety “e”
JB4262-92 Rubber cable introduced for explosion proof electrical equipment
Applicable circumstances
The altitude is less than 1000M
The maximum temperature : 40 , The minimum temperature : -5 ,
Relative humidity less than 95%( 25 )
Underground mines containing methane mixture gas and having potential danger of coal dust explosion
No strong bump and vibrate, the vertical surface less than 15 degrees
There is no the gas and steam that could corrosive meter or damage the insulation in the environment
No leakage
The waveform of power is similar to sinusoidal wave
Three-phase voltage approximate to symmetrical
Competitive Advantage:
1. The transformer is mine use explosion proof type and has excellent explosion proof performance and mechanical strength.
2. Special design for inner construction, in case of inner construction was loosened in the term of delivery.
3. The transformer has the strong capable of withstand thermal shock. It be able to overload and has the ability to withstand short circuit, low loss, a small amount of partial discharge and good insulation.
4. It is insensitivity to temperature and dust.
5. All insulation materials doesn’t combustion-supporting, self-extinguishing, non-toxic, excellent performance of fireproof, the transformer owned the characteristics like no harmful gases, low noise and no pollution.
6. it’s easy to use and maintain
7. Adopt C level of Nomex paper-covered wire from DuPont USA, it owned such features as air insulation, cooling, non-pollution, long lifetime and can be recycled.
8. Adopt the high quality 30Q130, 27Q120 cold rolling silicon steel and oxygen free copper conductor, the actual total loss is lower than similar foreign products, energy conservation and noise reduction.
Specifications: Main technical parameters
|
Rated capacity |
Primary rated voltage 6KV |
primary rated voltage 10KV |
|||||||||
|
load loss |
No-load loss |
Short-circuit impedance |
No-load current |
Load loss |
No-load loss |
Short-circuit impedance |
No-load current |
||||
|
50 |
550 |
350 |
4 |
2.5 |
680 |
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