Description
Technical Parameters
Henan GNEE Electric Co., Ltd. is one of the leading manufacturers and suppliers of three-phase oil-immersed power transformer in China, also supports customized service with low price. Welcome to buy discount three-phase oil-immersed power transformer for sale here from our factory. If you have any enquiry about pricelist, please feel free to email us.
Three phase oil immersed transformer Description
Three phase oil immersed transformer is an electrical device that changes the voltage and current levels of alternating current (AC) through the principle of electromagnetic induction. It consists of two (or more) coils, namely the primary coil and the secondary coil, as well as a magnetic circuit. The primary coil is connected to the input power supply, while the secondary coil is connected to the output load. Power transformers are used in industrial environments to supply electricity to residential areas and are also an ideal choice for power grids that transmit energy.
Oil immersed distribution transformer video
Three-phase Oil-immersed Power Transformer parameter
| Rated Capacity (KVA) |
Voltage Combination | Connection Group Symbol | No-load Loss (W) |
Load Loss (W) |
No-load Current % |
Short-circuit Impedance % |
||
| High Voltage | HV Tapping Range | Low Voltage | ||||||
| 50 |
6
|
±5% (±2x2.5) |
0.4 | Yyn0 Dyn11 |
100 | 910/870 | 0.25 | 4.0 |
| 80 | 130 | 1310/1250 | 0.22 | |||||
| 100 | 150 | 1580/1500 | 0.21 | |||||
| 125 | 170 | 1890/1800 | 0.20 | |||||
| 160 | 200 | 2310/2200 | 0.19 | |||||
| 200 | 240 | 2730/2600 | 0.18 | |||||
| 250 | 290 | 3200/3050 | 0.17 | |||||
| 315 | 340 | 3830/3650 | 0.16 | |||||
| 400 | 410 | 4520/4300 | 0.16 | |||||
| 500 | 490 | 5410/5150 | 0.15 | |||||
| 630 | 580 | 6200 | 0.15 | 4.5 | ||||
| 800 | 700 | 7500 | 0.14 | |||||
| 1000 | 830 | 10300 | 0.13 | |||||
| 1250 | 980 | 12000 | 0.12 | |||||
| 1600 | 1180 | 14500 | 0.11 | |||||
Characteristics of Power Transformers:
Low Losses
Compliant with the current national standard GB/T 20052-2020 "Technical Parameters and Requirements for Three-Phase Oil-Immersed Power Transformers", the Oil immersed type transformer achieves an average 50% reduction in no-load losses and 30% reduction in load losses.
Low No-Load Current
Thanks to the high-quality core material and advanced winding technology, the no-load current is significantly reduced. According to GB/T 20052-2020, the 3 phase distribution transformer achieve an average 75% reduction in no-load current.
Low Operating Noise
In compliance with the acoustic standard B/T 10088-1999, the Three phase distribution transformer exhibit a noise reduction of approximately 7-9dB.
High Short-Circuit Resistance
The power distribution transformer's core structure adopts a triangular prism design, reinforced with tie rods on all sides. Integrated with the upper/lower yokes, insulation, and laminated wood blocks, it effectively withstands axial and radial mechanical stresses during sudden short-circuit events.
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