Varelen electric Mining flameproof substation is an equipment designed to operate in underground coal mines due to its explosion-proof design, as a feeder of electrical energy to loads within the mine, adapting to the prevailing conditions within the mine, and operating under the presence of methane gas and coal dust. The design is completely and hermetically sealed under a proposed design by means of a packaging, to avoid ignition leaks to the outside in case of an explosion inside the substation, compliance with IEC 60079 equipment in explosive atmospheres Ex "d".
what is the application?
Mine flameproof dry transformer and mine flameproof mobile transformer are used in mines with methane mixed gas and coal dust, and there is a risk of explosion, as the power distribution device of underground pumping station, transport, shearer and other electrical equipment. It is a specialized design of a mobile electrical substation, for coal mining, explosion-proof in Gold Mine, and tunnel projects.
What is the body of the mine explosionproof substation?
KBSGZY mine flameproof mobile substation is composed of mine flameproof high voltage switch, mine flameproof dry transformer, mine flameproof low voltage switch, dry transformer and high and low voltage switch are connected by bolts. When the high and low voltage switches are removed and the high and low voltage cable outlet boxes are installed respectively, the KBSG mine flameproof dry type transformer can be formed. KBSG mine flameproof dry type transformer is composed of box shell, box cover, core assembly, insulation assembly, high voltage lead, low voltage lead and railway track trolley.
Our factory manufacturing different types ofMining flameproof transformers
2. KBSG-mining transformers
3. Nitrogen filled transformer(GNAN mining transformer)
Advantages of flameproof dry type transformer for mine
1) Low product loss and small no-load current.
2) The product has low impedance, high strength, good power supply quality and strong short-circuit resistance. The transformer body adopts high-strength design and manufacturing technology, strong short-circuit resistance, strong ability to withstand long-term high-power motor direct start, and reliable operation of the transformer.
3) Transformer noise is low, 5~10dB lower than the national standard. The product adopts high quality silicon steel sheet and special noise reduction technology, so that the transformer noise is controlled in a lower range and the operation is quieter.
4) The product has strong thermal shock ability and large overload capacity. The transformer coil adopts C-class insulation material as longitudinal insulation, and the normal operating temperature rise is controlled at the H-class insulation level, which strengthens the short-term over-load capacity of the transformer and improves the operation performance and service life of the product.
5) The shell of the product is flameproof type, thick steel box structure, with excellent flameproof performance and sufficient mechanical strength and corrosion resistance. The shell has a large heat dissipation area, low temperature rise, safer and more reliable operation, and long service life.
6) The local discharge is small, the insulation performance is good, and the temperature and dust are not sensitive. The high and low voltage coils are made of C-class insulated Nomex paper coated with oxygen-free copper wires. The dielectric constant of Nomex paper produced by DuPont is very close to that of air. The electric field around the coils is uniform, the local discharge is small, and it is not sensitive to high temperature and humidity.
9) With overload, short circuit, leakage, leakage lock, over voltage, under voltage, over temperature and other protection functions.
| Power(KVA) | Phase | Frequency | Insulation class | Cooling | Primary voltage | Secondry voltage | Tapping | Vector Group |
| 100 | 3 | 50/60HZ | H | ANAN | 6000, 10000 |
693(400), 1200(693) |
±5，±2x2.5 |
Yy0(d11) |
| 125 | ||||||||
| 160 | ||||||||
| 200 | ||||||||
| 250 | ||||||||
| 315 | ||||||||
| 400 | ||||||||
| 500 | ||||||||
| 630 | ||||||||
| 800 | Yy0(d11) | |||||||
| 1000 |
Yy0(d11),Yyn0 |
|||||||
| 1250 |
1200(693),3450 |
Yy0(d11),Yyn0 |
||||||
| 1600 |
1200, 3450 |
Yy0,Yyn0,Dyn11 |
||||||
| 2000 | ||||||||
| 2500 | C | |||||||
| 3150 |
3450 |
Dyn11 | ||||||
| 4000 |
3450 |
Dyn11 |
Technical Specification of Operating Environment
Altitude: 2300m
Temperature: Maximum temperature 40°C and 30°C
Relative humidity: Maximum 90% at 25°C.
Location: In areas with gas mixtures, coal, and risk of explosion.
Vibration: Environment without vibration and with an inclination that does not exceed 30°
Corrosion: Gas or gas vapors can corrode metal parts or destroy system insulation.
We collaborate extensively with our clients to grasp their electricity demands and deliver tailored answers that align with their specifications. Whether you require movable, adaptable, space-saving, container-based, reinforced, or portable substations, our Varelen teams possess the know-how and resources to furnish exceedingly dependable, secure, and adaptable resolutions for your electricity dispersal necessities.
