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◇ Superior insulation for long-term stable operation
◇ High moisture/corrosion resistance for outdoor & industrial environments
◇ Non-flammable epoxy resin ensures fire safety
◇ Compact space-saving design
◇ Quiet operation suitable for residential & commercial areas
Working Conditions
◇ Installation height: altitude not more than 1000m;
◇ Waveform of power supply voltage: similar to sine wave;
◇ Symmetry of multi-phase power supply voltage: The power supply voltage connected to the multi-phase transformer should be approximately symmetrical.
◇ Ambient temperature: maximum temperature +40°C; Maximum daily average temperature +30°C; Maximum annual average temperature +20°C; Minimum temperature -25°C (suitable for indoor transformers).
Structural Features
◇ Iron core
The iron core adopts high magnetic permeability high-quality grain-oriented cold-rolled silicon steel sheet, 45° full oblique stepping joint, the iron core adopts a special square tube pull plate structure, the core column is tied with insulation tape, and the surface of the iron core is coated with special resin to prevent moisture and rust, which effectively reduces no-load loss, no-load current and core noise.
Safe, flame retardant and fireproof, no pollution, can be installed directly in the load center.
Maintenance-free, easy to install and low overall operating costs.
Good moisture resistance, can operate normally at 100% humidity, and can be put into operation without pre-drying after outage.
Low loss, low partial discharge, low noise, strong heat dissipation capacity, equipped with a perfect temperature protection control system, providing reliable guarantee for the safe operation of transformers.
High reliability. According to the operation research of the products that have been put into operation, the reliability index of the products has reached the international advanced level.
◇ Foil coil
The low-voltage winding adopts a whole section of copper foil, together with the turn insulation of class F, and is wound on a special low-voltage foil winding machine. Foil coil better solves the outstanding problems of low voltage, large short-circuit stress of high-current coil wire-wound products, unbalanced ampere turn, poor heat dissipation effect, winding helix angle, and unstable artificial welding quality. At the same time, the winding end of our company is potted with resin, cured and formed, moisture-proof and anti-fouling.
◇ Temperature control device
The transformer adopts BWDK series signal thermometer, and the temperature measuring element is buried in the upper half of the low-voltage coil, which can automatically detect and circuit display the operating humidity of the three-phase coil. And there is an overtemperature alarm and trip function.
◇ Voltage conversion
The connectors are available in different gears to convert 10kV and 20kV voltages for 10kV and 20kV system voltage requirements, respectively.
| Rated capacity (kW) | No-load loss (kW) | Load losses at different insulation system temperatures | Short-circuit impedance (%) | ||||
| 130°C (B) (100°C) | 155°C (F) (120°C) | 155°C (F) (120°C) | |||||
| 30 | 0.135 | 0.605 | 0.64 | 0.685 | 4 | ||
| 50 | 0.195 | 0.845 | 0.9 | 0.965 | |||
| 80 | 0.265 | 1.16 | 1.4 | 1.33 | |||
| 100 | 0.29 | 1.33 | 1.41 | 1.52 | |||
| 125 | 0.34 | 1.56 | 1.66 | 1.78 | |||
| 160 | 0.385 | 1.8 | 1.91 | 2.02 | |||
| 200 | 0.445 | 2.13 | 2.27 | 2.44 | |||
| 250 | 0.515 | 2.33 | 2.48 | 2.66 | |||
| 315 | 0.635 | 2.94 | 3.12 | 3.35 | |||
| 400 | 0.705 | 3.37 | 3.59 | 3.85 | |||
| 500 | 0.835 | 4.13 | 4.39 | 4.7 | |||
| 630 | 0.965 | 4.97 | 5.29 | 5.66 | |||
| 630 | 0.935 | 5.05 | 5.36 | 5.76 | 6 | ||
| 800 | 1.09 | 5.89 | 6.26 | 6.71 | |||
| 1000 | 1.27 | 6.88 | 7.31 | 7.88 | |||
| 1200 | 1.5 | 8.19 | 8.72 | 9.33 | |||
| 1600 | 1.76 | 9.94 | 10.5 | 11.3 | |||
| 2000 | 2.19 | 12.2 | 13 | 14 | |||
| 2500 | 2.59 | 14.5 | 15.4 | 16.6 | |||
| 1600 | 1.76 | 11 | 11.6 | 12.5 | |||
| 2000 | 2.19 | 13.5 | 14.3 | 15.4 | 8 | ||
| 2500 | 2.59 | 15.9 | 17 | 18.2 | |||
1. Commercial Complexes & High-Rise Residential
Modern commercial complexes and high-rise residential buildings require reliable, compact, and fire-safe power distribution equipment.
2. Industrial Parks & Heavy Manufacturing
Industrial parks and heavy manufacturing facilities, including steel mills, cement plants, chemical factories, and automotive assembly lines, consume large volumes of medium-voltage power and require robust, outdoor-rated distribution equipment.
3. PV & Energy Storage Grid Connection
Solar photovoltaic farms and battery energy storage systems (BESS) require dedicated step-up transformer solutions to interface with the medium-voltage grid.
4. Infrastructure — Rail Transit, Healthcare & Data Centers
Critical infrastructure applications, including metro and railway systems, hospitals, and data centers, demand the highest levels of power reliability and redundancy.
5. Municipal & Environmental — Water Treatment & Pumping Stations
Municipal water supply, wastewater treatment plants, and flood control pumping stations present challenging operating conditions for electrical distribution equipment.
Q：Are you a trading company or factory?
A：We are a manufacturer boasting 15 years of industry experience and holding proprietary import-export rights.
Q：What certifications do you have?
A：Yes, we hold ISO, CE, and IEC certificates. In addition, we possess a number of design patents and a Special Equipment Manufacturing License.
Q：How long is your delivery time?
A：For normal products in 7-10 days; For bulk order, in 15-25 days. It depends.
Q：What is the warranty time?
A：3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers.
