Mining flameproof movable substation

The company production of mining flameproof movable substation ( hereinafter referred to as the mobile substation ) and mining flameproof dry type transformer ( hereinafter referred to as the dry-type transformer ) consists of 6000 volts and 10000 volts two voltage levels, transformer capacity from 100KVA to 4000KVA in all 14 levels of capacity.

Mine flameproof mobile transformer by mining flameproof dry type transformer, high voltage load switch ( or a low voltage protection box ) and other components.

Mining flameproof dry type transformer is composed of flameproof enclosure, body, not worthy of high and low voltage switch in the high, low side respectively corresponding cable terminal box, which can be used independently of mining flameproof dry type transformer.

Product structure ( transformer is composed of an iron core, coil, an insulator, clamping piece and other main components )

In 1, mining flameproof dry type transformer casing has two structures, a top lid case shell flame-proof structure, used for 800KVA and above capacity products; another for the ends of opening the cover of the box shell flame-proof structure for 630KVA and below capacity, product, both sides of the shell for corrugated steel plate, upper and lower using arc plate, so that the body has enough mechanical strength, and good heat dissipation.

2, transformer core using gang or Nippon Steel 130, 120 high-quality Cold-rolled grain-oriented silicon steel sheets, by the German bridge grid company production of fully automatic shear line cutting, ensure the core precision, burr, effectively reduce the no-load current and no-load loss. Iron core by special technology in high temperature resistant rust-proof, high-temperature epoxy resin integral curing caring, effectively reduces noise.

In 3, the body of high-quality oxygen-free copper coil by the most advanced copper extrusion equipment of a molding, so that the wire internal more compact and uniform surface, no burr, using H level C level the coil type insulated NOMEX paper bag oxygen-free copper, the same die winded, the invasion of vacuum pressure, effectively improve the coil mechanical strength and moisture capacity. Low voltage large current transformer using platinum winding, greatly improving the ability to withstand short circuit.

In 4, high voltage lead and 3.3KV low voltage lead by 6KV, 10KV cable lead-out, high voltage lead with cold extrusion process, improve the insulation products; low-voltage high-quality oxygen-free copper.

5, dry type power transformers have high and low pressure linkage line and temperature control lines are respectively connected with high and low pressure switch, temperature control using PT100 platinum resistance type SW2-125F temperature relay, arranged in a transformer coil top, can measure the internal temperature of the dry type transformer, dry-type transformer internal temperature too high a superstable signal.

Method of use:

Mobile substation and transformer under the following conditions to ensure the long-term use

A ) elevation not exceeding 1000m;

B ) ambient temperature:

The maximum temperature of 40 degrees C.

Maximum daily average temperature of 30 degrees Celsius

The highest average annual temperature of 20 degrees Celsius

The lowest temperature of - 5 DEG C.

C ) air relative humidity of not more than 95% ( 25 degrees C );

D ) in a mixture of methane gas and coal dust. And there is a danger of explosion in the mine;

E ) without a strong jolt, vibration and vertical surface tilt angle less than 15 degrees to the environment;

F ) non-metal corrosion and damage to the insulation of gas and vapor;

G ) without water;

H ) power supply voltage waveform similar to the sine wave;

I ) approximate symmetrical three-phase voltage.

Product features:

Mobile substation box body adopts more than 4mm steel, has excellent flameproof performance, transformer coil insulating materials by using NOMEX VPI vacuum pressure impregnation, enhanced moisture resistance, a small amount of partial discharge. Core made of high permeability of cold rolled silicon steel sheet, a multistage step type sloping seam,, on the iron yoke with drawstring fastening, advanced structure, compact, reliable. This product has high mechanical strength, strong ability of anti-short circuit, subjected to thermal shock capability is strong, resistant, fireproof performance, does not produce harmful gases, low noise, good insulation performance, energy saving, strong overload capacity, easy maintenance, suitable for mine use.

Products are in line with the GB8286-2005" flameproof mining flameproof movable substation" national standards, the no-load loss of transformer 6KV series than the original standard average fell 16%, load loss average dropped 10%; 10KV series no-load loss than the original standard reduce 15% in average, load loss dropped by an average of 12%, no load current, short circuit impedance drops somewhat, energy-saving and power quality enhancement effect.