75kVA Three Phase Power Transformer With 380V Output

Brand Name:GNEE
Certification:ISO9001:2000
Model Number:Power Transformer
Minimum Order Quantity:1set
Delivery Time:5-8 work days
Payment Terms:L/C, D/A, D/P, T/T
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Location: Anyang Henan China
Address: 25th Floor, Huafu Commercial Center, Wenfeng District, Anyang City,Henan Province
Supplier`s last login times: within 36 hours
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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 Loss
(kw)
load Loss
(kw)


No-load
Current
(%)
6300
110±8*1. 25%


6.3
6.6
10.5
11


YNd11






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.
China 75kVA Three Phase Power Transformer With 380V Output supplier

75kVA Three Phase Power Transformer With 380V Output

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