Transformer voltage range of 10.5 ± 2 * 2.5% kV and 10.5 ± 5% kV What is the difference
10 kV supply voltage is generally 10 ~ 10.7 kV, a long time too high voltage will cause the transformer insulation overheating, shorten the service life. 10.5 ± 2 * 2.5% kV range is 10.25 ~ 10.75 kV, 10.5 ± 5% kV 10.5 ± 5% kV 10 ~ 11 kV, the general power supply voltage is also the highest in 10.7KV, if the end of the line, with the The transmission line will gradually decay, if the end of 10.7, then the export of the transformer I am afraid to smoke, so we generally master substation bus voltage in 10.4 ~ 10.6
Two transformers of the same voltage range, but the tap is not the same, the previous one is 5-speed regulator, select the relatively small, more adaptable. The latter is the third gear regulator, sometimes with the actual time required to have the voltage difference, mainly to see that your load is stable and unstable. These two kinds of voltage regulator for the basic price of the transformer has no effect.
1, the voltage range is the same, are 10kV ± 5%;
2, the difference is that the accuracy of different voltage regulator, 10.5 ± 2 * 2.5% kV transformer sub-switch has five stalls, respectively, 10.5 +5% kV, 10.5 + 2.5% kV, 10.5kV, 10.5-2.5% , 10.5-5% kV; and 10.5 ± 5% kV transformer section switch has three stalls, respectively .5 +5% kV, 10.5kV, 10.5-5% kV;
3,10kV transformer sub-switch three more for the power failure regulator transformer, and sub-section switch five for overload regulator of the transformer, relatively speaking, the fifth gear than the third gear section switch Much more complex, so the price should be slightly higher for the load change is relatively large, the voltage quality requirements of the relatively high important occasions.
