35KV on-load voltage-regulating oil-immersed power transformer
07-03 2025 | By:
35KV on-load voltage-regulating oil-immersed power transformer
Product model: SZ11/SZ13/SZ18/SZ20/SZ22
Rated capacity: 2000KVA to 31500KVA
Rated voltage: 30KV, 33KV, 35KV, 38.5KV
35KV on-load voltage-regulating oil-immersed power transformer
I. Scope of application
On-load voltage-regulating oil-immersed power transformer is a kind of transformer that can automatically or manually operate the on-load switch under load conditions or achieve voltage regulation through a remote voltage regulator controller; it is an upgraded product developed on the basis of conventional oil-immersed distribution transformers; it is suitable for areas where the grid voltage fluctuates more frequently; transformers with a rated capacity ranging from 2000KVA to 31500KVA are suitable for AC 50Hz/60Hz, working voltage 35KV level and below power systems, as substation equipment for small and medium-sized substations.
2. Product standards
GB/T1094.1-5 GB/T1094.7 JB/T10088 GB/T6451
GB/T7595 JB/T3837 GB20052 IEC60076
3. Conditions of use
3.1 Altitude: ≤1000M;
3.2 Ambient temperature: -40℃~+40℃;
3.3 Outdoor wind speed: ≤45m/s
3.4 Ground inclination: ≤3°
3.5 Earthquake resistance: horizontal acceleration ≤0.3m/s2, vertical acceleration ≤0.15m/s2
3.6 Installation location: no fire, explosion hazard, severe dirt, chemical corrosion and severe vibration;
3.7 If the above conditions of use cannot meet the requirements, the user can negotiate with the company to resolve the problem.
4. Product Advantages
Core: 45° full-slant step joint process is adopted, which effectively reduces no-load loss, no-load current and core noise;
The clamp and pull plate structure are used to make the core as a whole stable and firm, thereby improving the ability to resist short circuit and impact.
Coil: High voltage adopts cylindrical type, low voltage adopts cylindrical type or foil type, which improves the ability to resist short circuit;
An oil guide structure is provided inside the winding to improve the oil flow path, thereby reducing temperature rise and improving load capacity.
Oil tank: It is a fully sealed bell-shaped structure, and the oil tank reinforcement iron adopts corrugated folding plate structure, with fewer welds and high mechanical strength;
The cooling device adopts a plate radiator, which has faster circulation speed, high heat dissipation efficiency, and improved overload capacity.
Body: All insulating parts and the welding parts of the winding head and lead wire are rounded;
The upper and lower parts of the body are positioned with rigidity to ensure that the body does not shift under various transportation conditions.
Safety: The transformer has protective devices such as gas relay, pressure relief valve, oil level gauge, thermometer and desiccant.
Voltage: When the grid voltage fluctuates greatly, the on-load voltage regulator can be used to adjust the voltage with load to provide a stable output voltage.
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