Reliable Three-phase Oil-immersed Distribution Transformer-15kV

Product overview:

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

• Mainly used in 15kV distribution network, industrial and mining enterprises and civil building power supply and distribution system.

• 12,598 sets of products have been successfully sold to Uganda, Ethiopia, Rwanda and other African countries.

• Standards: IEC 60076 series, IEC 6013, IEC 60214-1, IEC 60296; Gb1094-1996, GB/T6451-2008, GB/T7597-2007, etcervices.

Product advantages：

• 15kV three-phase oil-immersed distribution transformer & GT; Leading technology.

• High pressure copper tape winding technology, improve lightning resistance.

•  Low voltage copper foil winding technology, high quality A class insulation material insulation.

• Small magnetic leakage, high mechanical strength, strong short circuit resistance.

• Iron core 45° full oblique joint step laminated structure .

The shell：

•  Mitsubishi laser cutting machine and CNC punching, reducing, folding and other equipment to ensure the accuracy of processing.

•  ABB robot automatic welding, laser detection, to avoid leakage, qualified rate of 99.99998%.

•  Electrostatic spray treatment, 50 years of paint (coating corrosion resistance within 100h, hardness ≥0.4).

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

The iron core：

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

• Minimize loss level, no-load current and noise by controlling the cutting and stacking process of silicon steel sheet.

• The iron core is specially reinforced to ensure the three-phase oil-immersed distribution transformer structure is firm during normal operation and transportation.

Winding：

• Low voltage winding is made of high quality copper foil, excellent insulation resistance.

• The high voltage windings are usually made of 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.

• High quality anaerobic copper from China.

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

Other instructions:

• The low-voltage outgoing terminal is tinned copper bar.

• The high-voltage outlet terminals are ring tinned bolts.

• Default no-load voltage regulation (on-load voltage regulation can be customized) Tap switch 5 or 7 speed adjustment.

• Transformers above 630KVA are protected by gas relays.

Ordering instructions:

•  Main parameters of three-phase oil-immersed distribution transformer(voltage, capacity, loss and other main parameters).

• Three-phase oil-immersed distribution transformer operating environment (altitude, temperature, humidity, location, etc).

• Other customization requirements (tap switch, color, oil pillow, etc).

• The minimum order quantity is 1 sets, worldwide delivery within 7 days.

•  Normal delivery period of 30 days, worldwide fast delivery.

What is eddy current loss in no-load loss?

Eddy - current Loss：

• Definition: Eddy - current loss is the energy loss caused by eddy currents in the iron core. Eddy currents are the induced currents generated inside the iron core in an alternating magnetic field.

• Reason: The alternating magnetic field induces an electromotive force in the iron core, which then generates eddy currents. When eddy currents flow through the iron core, they encounter resistance and thus consume energy.

• Influencing Factors: Eddy - current loss is related to the thickness of the iron core, the resistivity of the material, and the frequency. Reducing the thickness of the iron core, using materials with high resistivity, and decreasing the frequency can all reduce eddy - current loss.