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Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable transformer manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations and high and low voltage complete sets of equipment.The equipment put into production and operation of the project advocates energy saving, intelligence, information and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center,with 71 utility model patents and 15 invention patents.With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa and other regions, covering more than 40 countries.
Non-encapsulated dry transformer is an advanced transformer, which adopts dry winding and oil-immersed core technology, mainly composed of high voltage winding, low voltage winding, iron core and shell.
The high voltage and low voltage windings of non-encapsulated dry transformer are dry insulation structure, which can not only improve the insulation strength, but also prevent insulation aging. The iron core is an oil-immersed design, which reduces the power consumption of the transformer, and has lower noise and more stable operation. The shell of the non-encapsulated dry transformer is made of special metal materials and has the characteristics of fire, moisture and corrosion protection.
The non-encapsulated dry transformer converts the high voltage of the transmission line to the low voltage through the electromagnetic induction between the high voltage winding and the low voltage winding to supply the end user. In addition, the transformer core can also effectively reduce the loss of current, thereby reducing power consumption and operating costs.
Class H insulation: Dry type transformer insulation heat resistance grade F, H, C, etc. The product uses DuPont NOMEX paper as the main insulation material, its insulation level has reached H level, the key parts of the grade has reached C level.
Safety: All the insulating materials of the product are non-combustion-supporting, self-extinguishing, non-toxic, and almost no toxic smoke is produced when it is burned for a long time at 800 ° C.
Reliablity: Excellent anti-corrosion performance (moisture-proof, anti-gas, anti-salt spray), can withstand thermal shock, never crack.
Environmental protection: It will not cause environmental pollution during manufacturing, transportation, storage and operation, and can be decomposed and recovered after reaching the life period.
Strong overload capacity: Strong overload capacity, fast heat dissipation, long-term safe and reliable operation under 130% overload.
| SG(B)11-30~2500/10kV Non-encapsulated Dry-type Transformer | |||||||
| Rated Capacity (kVA) |
High Voltage Combination | Vector Group | No-load loss(W) | Load loss(W) |
Impedance(%) | ||
| HV(kV) | Tap Range(%) | LV(kV) | |||||
| 30 | 6 6.3 6.6 10 10.5 11 |
±2.5 ±5 |
0.4 | Dyn11 Yyn0 |
170 | 760 | 4.0 |
| 50 | 240 | 1070 | |||||
| 80 | 330 | 1480 | |||||
| 100 | 360 | 1690 | |||||
| 125 | 420 | 1980 | |||||
| 160 | 480 | 2280 | |||||
| 200 | ±5 ±2x2.5 |
550 | 2710 | ||||
| 250 | 640 | 2960 | |||||
| 315 | 790 | 3730 | |||||
| 400 | 880 | 4280 | |||||
| 500 | 1040 | 5230 | |||||
| 630 | 1200 | 6290 | |||||
| 630 | 1170 | 6400 | 6.0 | ||||
| 800 | 1360 | 7460 | |||||
| 1000 | 1590 | 8760 | |||||
| 1250 | 1880 | 10300 | |||||
| 1600 | 2200 | 12500 | |||||
| 2000 | 2740 | 15500 | |||||
| 2500 | 3240 | 18400 | |||||
1. Altitude ≤1000m, ambient temperature: -25ºC--40ºC, indoor type.
2. For air self-cooling and forced air cooling transformers, it is necessary to ensure that the transformer has good ventilation capacity.
3. When the transformer is installed in the basement or other environments with poor ventilation capacity, heat dissipation and ventilation devices must be added.
4. Protection levels are IP00, IP20, IP23 and other types.
5. When the altitude is >1000 meters or the ambient temperature is greater than 40 ° C or less than -25 ° C, the product must be in accordance with the requirements of GB1094.11 Power transformers Part 11: Dry-type transformers to adjust the relevant ratings accordingly.
SG(B) type products are most suitable for high fire protection requirements, large load fluctuations, often overloaded operation, densely populated areas, suitable for high-rise residential, airport, station terminals, subways, hospitals, power plants, metallurgical industry, shopping centers, densely populated areas and petrochemical, nuclear power plants, military and other places, as well as water sources, reservoirs and other areas with high environmental protection requirements.
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