large power transformers are heavy electrical units used to change voltage in substations, power plants, solar stations, rail transit supply systems, and large industrial projects. They connect the grid side and the load side, carry high power for long running hours, and are selected by voltage, capacity, cooling method, insulation type, and installation space.
Product Parameters
|
Parameter |
Value |
|
Voltage range |
0.4 kV to 110 kV by product series |
|
Capacity range |
30 kVA to 240,000 kVA for oil immersed range |
|
Product forms |
Oil immersed, dry type, rectifier, traction, or phase-shifting type |
|
Insulation system |
Oil, resin casting, or Nomex / H class by model |
|
Cooling design |
Natural cooling, oil channel, or fan cooling |
|
Application |
Grid, power plant, solar station, heavy industry |
|
Factory check |
Routine test, nameplate check, accessory check |
Product Advantages
The product series can match grid supply, solar stations, traction systems, rectifier work, or plant distribution because structure, insulation, and cooling design are selected by load type.
The low-loss core, winding layout, oil channel, and cooling parts are selected by load data. This can help control no-load loss, load loss, and temperature rise during long-hour operation.
Bushing position, tank size, radiator layout, lifting points, and terminal direction can be matched with site drawings. This makes cable connection, unloading, and later inspection easier after large power transformers are installed.
Selection and Site Checking
1. We review voltage, capacity, frequency, impedance, tap range, cooling method, installation place, and standard requirements before model selection. For large power transformers, we also check whether the project needs oil immersed, dry type, amorphous alloy, rectifier, traction, or phase-shifting structure.
2. We compare the transformer outline with switchgear position, cable direction, protection device layout, foundation drawing, lifting space, and transport route. This helps the buyer avoid a unit that meets electrical data but cannot enter or be lifted safely on site.
3. Before shipment, we check nameplate data, accessory list, test report items, sealing parts, oil system parts, lifting points, packing photos, and delivery marks against the order. Factory test items such as loss, temperature rise, insulation, and short-circuit related data are reviewed by order requirement.
FAQ
Q: What data is needed before quotation?
A: Voltage, capacity, frequency, impedance, tap range, cooling method, installation place, site altitude, standard requirement, and accessory list should be provided first.
Q: Are these only used in substations?
A: No. They can also be used in power plants, solar stations, heavy industry, and rail transit power systems.
Q: What should be checked before shipment?
A: We check nameplate data, accessory list, factory test report, packing photos, oil system parts, lifting points, and delivery marks carefully for large power transformers.
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