Product Details
A power transformer is a device operating with high voltages in
power system, primarily to adjust voltage levels between generators
and distribution circuits. It consists of two or more windings
linked magnetically via a core. Current variations in one winding
induce changes in magnetic flux in the core, thereby generating
voltage in other windings. The voltage ratio between primary and
secondary windings depends on their turn ratios.
Rated Capacity (kva) |
HV (kV)
|
LV (kV)
|
Vector-group
| (%) Short -Circuit Impendance
| | |
No-load Current (%)
|
6300 | | | |
10.5
| 10.0 | 36 | 0.63 |
8000 | 12.0 | 40.4 | 0.63 |
10000 | 14.2 | 47.6 | 0.75 |
12500 | 16.8 | 56.5 | 0.53 |
16000 | 20.0 | 69.5 | 0.49 |
20000 | 24.0 | 84.2 | 0.49 |
25000 | 28.4 | 99.5 | 0.4 |
31500 | 33.8 | 120 | 0.4 |
40000 | 40.4 | 140.3 | 0.39 |
50000 | 47.8 | 174.3 | 0.39 |
63000 | 56.8 | 210 | 0.39 |
Power Transformers Used
Power transformers are used for several reasons in the electrical
power system. Some of them are:
- To reduce power loss in transmission lines: Electrical power is generated at low voltage levels, which results
in high current and high line losses due to ohmic heating. By using
a step-up transformer at the generating station, the voltage level
can be increased, and the current can be reduced, which reduces the
line losses and improves the power factor. Similarly, at the
receiving end, a step-down transformer can be used to lower the
voltage level to a suitable value for distribution and consumption.
- Galvanic Isolation Provided: Power transformers ensure electrical isolation between circuits
with different potentials or frequencies. This protection prevents
short circuits, ground faults, and equipment damage due to
electrical interference.
- Impedance Matching: By adjusting voltage and current levels, power transformers match
the load impedance with the source impedance, enhancing power
transfer and circuit efficiency.
- Voltage Level Adjustment: Power transformers supply various voltage levels suited for
diverse applications—lighting, heating, and communication. For
instance, a three-phase transformer can deliver both three-phase
power for industry and single-phase for home use.
Company Profile
Gnee Steel Co.,Ltd (GNEE) is the affiliated company for ANGANG
GROUP who are one large state-owned iron and steel group located in
Henan, China.
GNEE are specialized in manufacturing and supplying large
quantities Seamless steel pipes and Shipping-building plates, We
are provide high quality steel of Steels and Coils, plates, tool
steels,steel pipes and other steel products with guaranteed Grade-A
quality, excellent performance and competitive prices.
All of steel products from GNEE have been exported to overseas
distributors, warehouses, and factories in USA, Mid-east, Europe,
Bangladesh, Sri Lanka, Egypt, Saudi Arabia, and other countries and
regions. Therefore, GNEE has got a great market share in the
international market.
GNEE have a professional technician team, which not only have
decades working experience in steel industry, but also have a deep
and clear insight of the technology condition and the manufacturing
state in the Chinese main steel mills.
With the high efficient supervision system and professional
experience, we offer our efficient and considerate service to
clients around the world. We hope sincerely to become your Chinese
supplier and partner.
Our company will remain honest and pragmatic as always to
safeguard, strengthen and carry forward our National Brand, provide
quality commodities and top-class services to domestic and overseas
clients. We sincerely wish to develop long-term win-win cooperation
with domestic and overseas clients.