1000kva Distribution Power Transformer 11 to 33kv

The 1000kva distribution power transformer 11 to 33kv is a key medium voltage electrical equipment, manufactured in line with IEC 60076 and GB 1094 standards. It converts 11kV input power to 33kV output, realizing energy transmission between voltage levels, widely used in industrial parks, power stations, rural grid upgrading and large industrial enterprises.

Adopting YNd11 vector group, CRGO silicon steel core and pure copper windings,1000kva distribution power transformer 11 to 33kv features low energy consumption, strong overload capacity and stable performance. With±2×2.5% no load voltage regulation, it ensures stable output, and its hermetic sealed structure suits indoor and outdoor installation, providing reliable power support for various scenarios.

1000kva distribution power transformer 11 to 33kv is mainly used in the voltage boosting scenarios of medium voltage power grids.

Its specific application fields include:

1.Industrial parks, large industrial and mining enterprises: Convert the 11 kv power generated by their own power plants or obtained from the power grid into 33 kv high voltage power for internal power transmission and power supply to large equipment.

2.Power plants and substations: Used as the voltage boosting equipment for generating sets, converting the low voltage power generated by the generators into 33 kv high voltage power and connecting it to the medium voltage power grid.

3.Rural power grid upgrade: Increase the voltage level of the rural power grid, reduce transmission losses, and ensure the stability of rural power supply.

4.Large construction sites and temporary power supply projects: Provide stable 33 kv high voltage power for large construction machinery and temporary power supply systems.

Technical parameter:

Q: What is the maintenance standards for transformer oil?When is oil replenishment or replacement necessary?

A:This 1000kva distribution power transformer 11 to 33kv adopts a fully sealed structure. Under normal operation without oil leakage, there is no need for frequent oil replenishment.

Maintenance guidelines: Take samples to test the transformer oil every 1 to 2 years, and test the breakdown voltage, moisture content, and acid value. If the oil level is below the standard scale, the oil color is dark and turbid, the moisture content exceeds the standard, or the insulation strength decreases, timely oil replenishment or overall oil replacement is required. It is strictly prohibited to mix different brands or different manufacturers' transformer oil. After oil replacement, thorough exhausting is required to avoid local discharge faults caused by air bubbles in the oil.

Q:What is the standard short circuit impedance value set of 1000kva distribution power transformer 11 to 33kv ? What is the significance of this setting?

A:The standard short circuit impedance is set at 6.5%. This value is the national standard and IEC standard setting for 1000kva distribution power transformer 11 to 33kv level. It cannot be changed arbitrarily.

The core design significance lies in: First, it effectively limits the peak short circuit current during grid short circuit faults, reduces the impact of short circuit electromotive force on the transformer windings and core, and avoids major faults such as winding deformation and core damage; Second, it matches the short circuit capacity of the medium voltage grid, ensures the precise coordination of the settings of upstream and downstream switchgear and relay protection devices, prevents over level tripping of faults, and guarantees the stability of the entire medium voltage distribution system; Third, it controls the voltage adjustment rate of the 1000kva distribution power transformer 11 to 33kv, avoids excessive voltage deviation during load fluctuations, and ensures that the power supply quality meets the standards.

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