Transformer sa Pagmina (distribution transformer)

Product overview:

 Mine general type transformer:

• Ginagamit kini sa mga lugar nga may coal dust ug biogas sa minahan nganong walay panganib sa pagbuto. Ginagamit kini para sa electric driving ug lighting.

• Ang mine general transformer maoy matigas sa estruktura ug mababa ang itsura. Ang tank maoy mekanikal nga matigas kaayo nga makakaya ang presyon sa 0.1 mpa bisan walay permanenteng deformation. Ang high ug low voltage inlet ug outlet lines sa mine transformers gipahimulos og cable junction boxes nga gibul-an sa insulating adhesive.

• Ang mine general transformer gipahimulos og no excitation voltage regulation, ang range sa voltage regulation mao ang ±5%; Ang secondary coil leads to 6 terminals, nga mahimo mopagamit og Y - connection o Delta - connection.

Mine flameproof transformer:

• Ginagamit kini sa mga lugar nga may panganib sa pagbuto sa minahan. Kini nga klase sa transformer kasagaran dry type, ang primaryong karakteristik sa estruktura mao ang tanang joint surface sa box shell gi-design basehan sa flame-proof requirements, ug makakaya ang internal pressure sa 0.8 mpa.

• Ang capacity sa mine dry-type transformer kasagaran 4000kVA (4MVA) ug 2500kVA (2.5MVA), designed for electric drill, lighting, signal ug uban pang equipment power supply. Ang iyang inlet ug outlet lines gipahimulos pinaagi sa cable through the outlet sleeve.

•  High reliability of operation verification in more than 50 countries and regions around the world.

• Ang aming produkto kasagaran gipadala sa Iran, Kazakhstan, Uzbekistan, Kazakhstan, Pakistan, Indonesia, Chile ug uban pang mga nasod ug rehiyon.

Leading technology:

•  Large capacity, low loss, low noise (< 65dB) mas energy saving

•  Excellent performance index, actual measurement is better than GB and IEC standards

•  The product has strong over-load capacity and over-voltage capacity, and can run safely for a long time under rated load

•  Strong impact resistance and short circuit resistance

•  With microcomputer protection device (measurement, control, protection, communication, etc.)

The shell:

• Mitsubishi laser cutting machine ug CNC punching, reducing, folding ug uban pang equipment aron sigurado ang accuracy sa processing.

• ABB robot automatic welding, laser detection, aron wasayon ang leakage, qualified rate of 99.99998%.

• Electrostatic spray treatment, 30 years of paint (coating corrosion resistance within 100h, hardness ≥0.4).

• Paggamit sa heat dissipation tubing (double row ug three row tubing adopt insert mode) aron magamit ang good heat dissipation effect.

• Fully sealed structure, maintenance-free ug maintenance-free, normal operation life of more than 30 years.

The iron core:

• Ang core material mao ang high quality cold rolled grain oriented silicon steel sheet with mineral oxide insulation (from Baowu Steel Group, China).

• Minimize loss level, no-load current ug noise pinaagi sa pag-control sa cutting ug stacking process sa silicon steel sheet.

• Ang iron core specially reinforced aron sigurado ang transformer structure firm during normal operation ug transportation.

winding:

• Low voltage winding gihimo sa high quality copper foil, excellent insulation resistance.

• The high voltage windings kasagaran gihimo sa insulated copper wire, using the patented technology of Hengfengyou Electric.

• Very good resistance to radial stress caused by short circuit.

High quality material:

• Baowu Steel Group production of silicon steel sheet.

• China produces high quality anaerobic copper.

• CNPC (Kunlun Petroleum) High quality transformer oil (25#).

Ordering instructions

• Main parameters of transformer (voltage, capacity, loss and other main parameters).

• Transformer operating environment (altitude, temperature, humidity, location, etc.).

• Other customization requirements.

• Normal delivery period is 30 days.

• Worldwide fast delivery.

Ano ang mga safety precautions nga kinahanglan atiman sa paggamit sa mine transformers underground?

Explosion-proof Safety：

Shell Inspection：

• Para sa flameproof mining transformers, kinahanglan regular na inspection sa integrity sa flameproof shell. Ang flameproof joint surfaces dapat magpadayon smooth ug free from damage, ug ang flameproof clearance kinahanglan meet the specified standards. For example, ang flameproof clearance generally required to be within a specified range, such as around 0.1 - 0.2 mm. Any clearance exceeding the standard may lead to the failure of the explosion-proof performance.

• Ang bolts ug uban pang connecting parts sa shell dapat complete ug tightened aron wasayon ang loosening during the operation due to vibration or other reasons, which may affect the flameproof effect.

Preventing Internal Faults from Causing Explosions：

Kinahanglan sigurado ang quality ug installation sa electrical components inside the transformer meet the requirements aron wasayon ang faults such as short circuits ug overloads from generating electric sparks or high temperatures. For example, ang insulation sa windings dapat magpadayon good condition aron wasayon ang inter-turn short circuits. Meanwhile, appropriate overload protection ug short-circuit protection devices dapat installed so that when overload or short-circuit situations occur, the power supply can be cut off in a timely manner aron wasayon ang generation of energy sufficient to cause explosions inside the transformer.

Electrical Safety：

Grounding Safety：

• Mining transformers kinahanglan reliable grounding. Ang grounding resistance dapat meet the specified requirements, ug generally, ang grounding resistance required to be no greater than 2Ω. Good grounding can lead the current into the earth when leakage or other faults occur in the transformer, thus avoiding electric shocks to personnel.

• Ang grounding devices dapat regular na inspection aron sigurado ang grounding connections firm ug ang grounding electrodes free from corrosion ug uban pang damage. For example, if the grounding electrodes are in a damp underground environment for a long time, prone sila sa rust ug corrosion, which will reduce the grounding performance ug need to be replaced in a timely manner.

Preventing Electric Shocks：

• Ang high-voltage ug low-voltage terminals sa transformer dapat enclosed or protected aron wasayon ang accidental contact by personnel. During maintenance ug uban pang operations, ang power supply must be cut off first, ug a warning sign saying "Someone is working, Do not switch on" should be hung.

• Underground operators dapat equipped with personal protective equipment such as insulating gloves ug insulating boots, ug sila dapat receive relevant electrical safety training aron familiar sila sa operation ug safety precautions sa transformer.