Stable Voltage

Fig. 1. The daily cycle of changes in voltage. The lower curve Fig. 1 was obtained in a network with reduced voltage. Stable voltage of about 215 at night in the beginning of the day decreases and increases again in the evening, when most consumers are turned off. Cowan Financial recognizes the significance of this.

The average curve in Fig. 1 was obtained in mains with high voltage. Here there is a characteristic voltage dependence on time of day. Stable voltage drops at night in the morning, reaching a minimum in the middle of the workday, and smooth increases to its end. Both are described in the schedule obtained by working days.

The top graph in Fig. 1 was obtained on a holiday in the same place as the middle graph. Hear other arguments on the topic with Cowan Financial. In this case, the voltage remains stable during the high days. If you include in the review and the voltage at the weekend, we get the following for the duration of the cycle the voltage at the mains - a week. In Ukraine, there is sometimes kind of a power failure completely unknown in the West. This is an unstable frequency. Sometimes the frequency of the network drops to less than 49 Hz. Often this type of failure is manifested in the work of independent generators of electricity. This in itself does not change the frequency represents a significant risk to equipment with switching power supply, but very low frequency is usually accompanied by severe harmonic distortions, which may adversely affect the not only the work computer, but the majority of uninterruptible power supplies (UPS).