Insulation dry-type transformer interpretation, process char

   Epoxy cast dry type power transformers are designed, manufactured and tested with the most advanced equipment in the world. The products are characterized by high reliability and long service life. Depending on the use of the environment, can be configured with different levels of protection of the shell or not configured shell. This product is suitable for high-rise buildings, commercial centers, airports, tunnels, chemical plants, nuclear power plants, ships and other important or special environmental places.

The product features safety, fire prevention, no pollution, can be directly run in the load center. High Mechanical Strength, strong short circuit resistance, small partial discharge, good thermal stability, high reliability, long service life. Low loss, low noise, energy-saving effect is obvious, maintenance-free. Good heat dissipation performance, strong over-load capacity, forced air cooling can improve capacity operation. Good moisture-proof performance, adapt to high humidity and other harsh environment operation. Perfect temperature monitoring and protection system. The intelligent signal temperature control system can automatically monitor and display the working temperature of the three-phase windings, Start and stop the Fan, alarm and trip etc. . Small volume, light weight, less space, low installation cost. The process features the core is made of 30P105 and 120 high quality cold rolled silicon steel sheet of Shanghai Baosteel, with a 45-degree stepped all-diagonal joint structure. The magnetic flux distribution at the joint is improved by using the three-shear, two-punch cross-cutting process of the core and the five-step step step shearing and folding iron process, reduces the vibration energy of the core. The iron core is solidified in one and sealed with insulating resin on the surface, which can effectively reduce no-load loss, no-load flow and noise of the iron core. High-voltage coil using high-quality F class insulation wire winding system, larger capacity coil along the axial set of cooling air channel. The structure has good resistance to current impact, temperature change, cracking and excellent heat dissipation performance. Multi-stage cylinder structure, strong ability to withstand over-voltage and low level of partial discharge. After vacuum drying, the coil is poured. The whole pouring and curing process is completed according to the pre-programmed process curve. The precise process control ensures that the coil has no air hole and hole. The foil structure is adopted in the low-voltage coil, which effectively solves the problem of unbalanced ampere-turns in the winding type of low-voltage and high-current coil, and there are no axial turns and axial winding spiral angle in the foil coil, the axial force of the transformer is effectively eliminated, and the current density in the coil can be adjusted freely along the axial direction according to the load distribution of the high voltage coil. The wound end of the coil is sealed with resin and cured to avoid the entry of foreign matter and moisture. Standard GB/T10228-2008"technical parameters and requirements for dry-type power transformers" GB6450-1986"dry-type power transformers" IEC726"dry-type power transformers" (International Electrotechnical Commission standard) GB1094-2007"power transformers" technical specification capacity range: 80-2500 KVA voltage class: 100kv voltage regulation mode: ± 22.5% or ± 5% frequency: 50 HZ phase number: 3 phase or single Phase Connection Group number: Y, yno Or d, YN11 impedance voltage: Standard impedance voltage see technical parameter table operating conditions: ambient temperature not more than 40 °C, relative humidity up to 100% , altitude not more than 1000 meters, indoor, air exchange according to the total loss of transformer, not less than 4m3/km. Min Cooling Mode: AN or AF protection class: IP00 or IP20(indoor) , IP23 insulation heat resistance class: H Class winding allowable average temperature rise 125K temperature limit: 180 °C insulation level: rated voltage, power frequency withstand voltage, lightning surge withstand voltage 10KV 36KV 75KV temperature measurement and control device: Digital Display three-phase low-voltage winding internal approximate temperature, control cooling fan can be designed according to user requirements, such as high-altitude products, high-impedance products, on-load voltage regulation products and other technical parameters: SC (B)10 resin cast dry-type power transformer main technical parameters