Wholesale dry-type transformers, copper dry-type transformers

SC10-5 / 10-0.4 dry-type transformers Product Description: 1. Product Type: SC10-5 / 10-0.4 2. Rated Capacity: 5KVA 3. Rated voltage and high-voltage tap range: 10KV, ± 2 * 2.5, ± 5 % (can be customized according to customer requirements) 4. Phase: 3 phase 5. Rated frequency: 50HZ, 60HZ 6. Connection Group label: Dyn11, Yyn0 7. Low Impedance: 4% S: represents three-phase transformer C: represents resin casting type B: represents the foil around the coil 10: Code distinguish levels of performance and Yyn0 Dyn11 Connection Group 1) according to the characteristics of the load distribution lines, American box changed using Dyn11 knot lines, with high quality output voltage, neutral point does not drift lightning protection performance is good. When the low pressure side of the box becomes unbalanced three-phase load, due within the zero-sequence current and third harmonic currents in high voltage winding of the closed-loop circulation, the total zero-sequence third harmonic magnetic potential and magnetic potential almost every core column equal to zero, so the low-voltage neutral point potential does not drift, the voltage is high quality; the same can also be due to lightning current within the high voltage winding of the closed-loop circulation, the lightning current is almost zero total magnetic potential core of each column, eliminating the positive voltage inverter replaced, so good lightning performance, but there is the problem of non-phase running, I take the main switch in low voltage installation of undervoltage protection. 2) Yyn0 wiring, high-voltage fuse when one phase is blown, there will be a phase voltage is zero, and the other two-phase voltage does not change, can be reduced to one-third of the power range. This does not affect the low-voltage side -9 * 3 single-phase power lighting load. If the low pressure side of the three-phase power supply load, generally the configuration phase protection and therefore will not cause power load due to missing running and burning. Using Dyn11 and Yyn0 coupling group is determined according to user requirements. Compared with Yyn0 Dyn11 following advantages: reducing transformer losses; reduce harmonics; favor single-phase ground short circuit fault removal; single-phase unbalanced load can be fully utilized. Cast resin dry type transformers Features: 1. Safety, nonflammable, fire can be directly installed in the load center; 2. Maintenance free, easy installation, low operating costs; 3. moisture resistance, and can be run normally at 100% humidity; 4 low loss, low noise, low partial discharge, loss is usually 5% to 10% lower than the corresponding national standards; 5. heat, overload, under-cooled condition, can overload 50%; 6. reliable operation, a perfect temperature protection control system can ensure the safe operation of the transformer; 7. small size, light weight, structural stability, strong anti-sudden short-circuit capability; cast resin dry type transformers Features safety, fire, pollution, can be directly Run the load center. HTT using German technology, high mechanical strength, resistance to short-circuit capacity, partial discharge, good thermal stability, high reliability and long service life. Low loss, low noise, energy-saving effect, maintenance-free. Good heat dissipation performance, over-load capacity, can increase the capacity of the runtime forced air cooling. Moisture-proof performance, adapt to high humidity and other harsh environments. Be equipped temperature monitoring and protection systems. Intelligent signal temperature control system can automatically monitor and display three-phase winding their tour operating temperature, can automatically start and stop the fan and alarm trip settings and other functions. Small size, light weight, low footprint, low installation costs. High quality cold-rolled silicon steel core, 45-degree miter joints ladder structure, using a three-two punch shear angle iron to craft and five cross-cutting step ladder iron clip and stack technology, improve the flux seams distribution, reducing the vibration energy core. Curing the core integrally with the surface of an insulating resin sealing process, effectively reducing the load loss, no-load and the core flow noise. High voltage coil class F insulation with high-quality wire and advanced insulation material around the system, larger capacity with cooling coil axial airway. This structure has good current impact resistance, resistant to temperature change, resistance to cracking and excellent thermal performance. Using multistage cylindrical structure, strong ability to withstand over-voltage and low partial discharge level. Coil Die Casting after vacuum drying, the entire process is completed in accordance with the casting and curing process curve preprogrammed, sophisticated process control to ensure that the coil without pores, holes. Low coil using foil-type structure, effectively solve the low voltage, high current coil using wire wound type of ampere-turns imbalance, but there is no axial foil coil winding turns and axial helix angle, effectively eliminating When the transformer short circuit axial force to ensure that the current density in the coil can be distributed freely in the axial load is adjusted according to the high-voltage coil, reducing the radial force Low sudden short circuit. After winding the coil end portion is resin-sealed curing, avoids the ingress of moisture and foreign matter. Dry-type transformers structural features: 1), high-pressure oxygen-free copper winding conductors using high conductivity, turn insulation class F insulation materials, inside and outside the windings are made with imported glass grid plate skeleton. Together with copper foil, turn insulation in high voltage winding machine once programmed, computer control, laser positioning, automatic TIG welding lead line, segment around the system, and then placed in a mold under vacuum with a cast resin with filler molding. 2), low pressure and high pressure around the system uses the same copper winding height, along with F and turns on the low-voltage insulation foil wound around the machine. When winding winding automatic welding wire with copper by welding leads, stay in the middle to form a cooling coil into the airway, the ends of the potting resin, curing. 3), the core made of high quality cold-rolled grain oriented silicon steel, 45-degree miter joints and non-perforated iron yoke structure to ensure a low load loss. Core clamping using domestic unmatched prestressed, breathable square steel clamps structure, stem using insulating tape banding, using clamps down within the drawing board structure, the core surface with special resin sealing process, thereby increasing the structural strength and clamping force , while also reducing noise. Dry-type transformers Ordering Information: 1. Model 2. 3. Rated voltage and rated capacity high pressure tap range Phase 4. 5. 6. Connect the rated frequency group label Protection Class 7. 8. 9. Cooling conditions 10. 11. The use of standard insulation level 12. Other special requirements