Working UPS battery voltage is low

Working industrial ups power supply battery voltage is low, but start charging more than 10 hours of battery charge voltage is still not up.
Failure Analysis: Phenomenon judged from the battery or charging circuit failure, according to the following steps to check:
- Check the charging circuit input and output voltage is normal;
- If the charging circuit input is normal, the output is not normal, disconnect the battery
Then measured, if not normal, compared with the charging circuit fault;
- After disconnecting the battery charging circuit if the input and output are normal, then the battery is not charged due to long-term, over-discharge or other reasons, to the life of the damage.

UPS efficiency solar inverter

UPS efficiency solar inverter
Solar inverter efficiency refers to as the demand for renewable energy, solar inverters (photovoltaic inverters) market is growing. These inverters require extremely high efficiency and reliability. These inverters used in industrial ups power supply circuits were investigated and recommended the best choice for the switch and rectifier parts. The general structure of the photovoltaic inverter shown in Figure 1, there are three different inverter available. Sunlight on the solar modules are connected in series through, each module contains a set of solar cells in series (Solar Cell) unit. Direct current (DC) voltage generated by the solar module in order of several hundred volts, the values according to the number of lighting conditions module array, and the temperature of the battery modules may be connected in series.
The primary function of this type of inverter is the input DC voltage is converted to a stable value. This function is achieved through the boost converter and the boost switch and boost diode needs. In the first configuration, after the boost stage is an isolated full-bridge converter. The role is to provide full-bridge transformer isolation. The second full-bridge converter output is used from the first full-bridge DC converter stage DC into alternating current (AC). Its output is connected to another network before being filtered through the AC Pure sine wave ups grid additional double contact relay switch