When the intelligent on load capacity regulating transformer is adjusted from a large capacity to a small capacity, the high-voltage winding changes from a delta connection to a star connection, and the phase voltage becomes one-third of the original root. The resistance value remains unchanged, and the current becomes one-third of the original root. The capacity P=U × I, so the capacity becomes one-third of the original. The low-voltage side increases the number of turns through a series resistor, and the increase in turns is equivalent to a multiple of the voltage decrease, thereby ensuring that the output voltage remains unchanged. By increasing the resistance value and changing the current while ensuring the voltage remains unchanged, a change in capacity is formed. Due to the increase in the number of turns on the low-voltage side, the magnetic flux density of the iron core decreases, resulting in a reduction in the unit loss of silicon steel sheets, as well as a decrease in no-load loss and no-load current, achieving the goal of reducing losses and saving energy.
Execution standard: GB/T1094.1、GB/T1094.2、GB/T1094.3、GB/T1094.5、GB/T1094.10、GB/T6451、GB20052 The transformer products produced by our company meet the new version of the above standards.
Usage environment:
1. The altitude of the installation site shall not exceed 1000m, the ambient temperature shall not be higher than 40 ℃, not lower than -25 ℃, the highest daily average temperature shall be 30 ℃, and the highest annual average temperature shall be 20 ℃.
2. Operating environment, relative humidity not exceeding 90% (ambient temperature 25 ℃)
3. When installing the product, it should generally be 800mm away from walls and other obstacles, and there should be a distance of 300mm between adjacent transformers. The above distance can be adjusted appropriately for distribution boxes and other situations where installation space is limited.
4. In general, transformers can be placed directly at the usage site and can be put into operation after installation and inspection. For situations with seismic and other special requirements, the foundation for installing transformers should be embedded with bolts and fixed with bolts and nuts.
High voltage 10kV, tap range ± 2 × 2.5%, low voltage 0.4kV; connection group number Dyn11 (Yyn0); Capacity specifications: 160 (50), 200 (63), 250 (80), 315 (100), 400 (125), 500 (160), 630 (200) kVA; Short circuit impedance 4.0%, 4.5%; Equipped with WiFi communication, GSM/GPRS remote communication, on-site manual and automatic, and background monitoring.