The Mining Explosion-proof Mobile Substation
The Mining Explosion-proof Mobile Substation is the mobile complete device consisting of Dry-type Transformer, High-voltage Load Switch or High-voltage Vacuum Switch, Cable connector and Low-voltage Feed Switch or Low-voltage Protection Box and other parts. It is applicable for coal mines with high humility, with a mixture of gas and coal dust, and with explosion hazard, and provides power supply for the comprehensive mechanical coal mining equipment or hand-held electric drill, lighting and other devices.
Rated
Capacity
(kVA)
Voltage Combination (kV)
Connection Unit Symbol
Losses
Impedance
Voltage (%)
No-load
Current (%)
Primary Voltage
Secondary
Voltage
No Load
Load
50
6±5%
0.693/0.4
Yy0(d11)
350
550
4
2.5
100
520
920
4
2.5
200
820
1550
4
2
315
1.2/0.693
1100
2150
4
1.8
400
1300
2600
4
1.8
500
1500
3100
4
1.5
630
1800
3680
4
1.5
800
1.2/0.693
3.45Yy0(d11)
Yyn02050
4500
4
1
1000
2350
5400
4
1
1250
2750
6500
4
1
1600
3350
8000
4
0.8
2000
3.45
Yyn0
3800
9500
4.5
0.6
2500
4500
10600
5
0.6
3150
5300
12500
5.5
0.6
4000
6100
14000
6
0.6
5000
7210
17640
6
0.6
6300
8070
19055
6
0.7
1) Low No-load Losses
1. Uses high-quality silicon steel sheet.
2. Wound iron core fully utilizes orientation of the silicon steel sheet. The magnetic property is restored through annealing process, reducing its no-load loss by 20% to 35%.
2) Low Noise
The noise is from the iron core, and is transferred to the surrounding through the housing.
Measures for noise reduction:
1. Reduce the noise source, and adopt the seamless wound iron core, compact structure, small magnetostriction and low noise.
2. The connecting position is added with silica gel plate, which cuts off the noise spreading approach.
3) Light Weight and Small Volume.
4) It is explosion-proof and damp-proof.
5. The Mobile Substation has a perfect overload, short circuit and leakage protection function. There is an electrical interlock or mechanical interlock device between the high- and low-voltage switches or between a high-voltage switch and the circuit breaker of the upper stage.
6.Energy Conservation and Environmental Protection
1) Adopt a Nomex paper-wrapped line with insulation grade C that is imported from American DuPont Company. It uses air insulation and cooling. It has no pollution on the environment, and the product has long service life; the product can be decomposed for recovery after the service life ends;
2) The high-quality 30Q130 cold-rolled oriented silicon steel sheet and oxygen-free copper conductor are adopted, so that the actual total loss is lower than that of the other similar products.It saves the energy, and lowers noise.
1.The elevation shall not exceed 1,000m;
2.Ambient temperature Maximum temperature +40℃/104°F
Maximum daily average temperature +30℃/86°F
Maximum annual average temperature +20℃/68°F
Minimum temperature -5℃/23°F
3.The relative humidity shall not exceed 95% (at +25 ℃/77°F);
4.Mines with a mixture of methane gas and coal dust, and a risk of explosion;
5.Places without strong bump and vibration and with inclination from the vertical plane not exceeding 15°;
6.No sufficient gas or vapour to cause metals corrosion or insulation damage;
7.Places without dripping.
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