Oil Immersed Distribution Transformer With OLTC
1. Scope of application
On Load Tap Changer oil-immersed distribution transformer is a kind of on-load switch that can be operated automatically or manually under load conditions, or through remote voltage regulation controller to achieve voltage regulation. It is an upgraded product developed on the basis of conventional oil-immersed distribution transformers, which is suitable for areas with large and frequent fluctuations in the voltage of the power grid, enterprises or places with more stable voltage requirements.
On Load Tap Changer oil-immersed distribution transformers are suitable for AC 50Hz/60Hz, working voltage 6KV~38.5KV and below in the power system. They are used as substation equipment in power transmission and distribution fields, infrastructure fields, public transportation, buildings and residences, industrial fields, information technology fields and new energy fields.
2. Product standards
GB/T1094.1-5 GB/T1094.7 JB/T10088 GB/T6451
GB/T7595 JB/T3837 GB20052 IEC60076
3. Operation environment
1) Altitude: ≤1000 meters.
2) Ambient temperature: Maximum +40ºC, Minimum -40ºC.
3) Max outdoor wind speed: ≤45m/s.
4) Max Ground ramp degree: ≤3°.
5) Seismic level: ≤3m/s2 at horizontal direction and ≤1.5m/s2 at vertical direction.
6) Installation environment: No obvious and heavy pollution, no explosive and corrosive gas and dust, with good air ventilation and no severe vibration and shock.
7) If the application environment is different from the above standard conditions, please contact for customized designs.
4. Product advantages
1) Iron core: adopted 45° full inclined step joint process, which effectively reduces no-load loss, no-load current and core noise. The clamping and pulling plate structure makes the iron core stable and firm as a whole, thereby improving the resistance to short circuit and impact.
2) Coil: high voltage adopts cylindrical type, while low voltage adopts cylindrical type or foil type, which improves the resistance to short circuit. An oil guide structure is provided inside the winding to improve the oil flow path, thereby reducing temperature rise and increasing load capacity.
3) Oil tank: fully sealed bell structure, the reinforced iron of the oil tank adopts corrugated folding plate structure, less welds, high mechanical strength. The cooling device adopts a chip radiator, which has faster circulation speed, high heat dissipation efficiency and improved overload capacity.
4) Body: All insulating parts, winding outlets and lead welding parts have been rounded. The upper and lower parts of the device are positioned rigidly, which can ensure that the body does not shift under various transportation conditions.
5) Voltage: When the grid voltage fluctuates greatly, the voltage with load can be adjusted by the on-load voltage regulation switch to provide a stable output voltage.
6) Safety: The transformer has gas relays, pressure relief valves, oil level gauges, thermometers and moisture absorbers and other protective devices.
