With the popularization of computers and the continuous development of information processing technology, it is now used in communication systems, information processing systems, automatic control systems, traffic management systems, medical control systems, aerospace, meteorological finance, etc. Computers have been widely used in many departments. In order to ensure the correct and safe operation of computers, we have put forward more and more stringent requirements for power supply. UPS is a power supply system (Uninterruptible Power System) designed, developed and popularized in response to this requirement. It is called "Uninterruptible Power Supply" System" or "Uninterruptible Power Supply System" is referred to as UPS. Nowadays, uninterruptible power supply has rapidly evolved from a less valued role in computer peripheral equipment to a key equipment of the Internet and the defender of e-commerce. As the cornerstone of the information society, UPS has begun its new historical mission. With the advent of the international Internet era, higher and higher requirements have been placed on the quality of power supply, whether it is the equipment of the entire network or the data transmission channels for end users. Comprehensive end-to-end protection requires high-quality uninterruptible power supplies.
Fault analysis: Judgment from the phenomenon is that the battery and inverter are partially faulty. You can check according to the following procedures:
1. Check the battery voltage to see if the battery is undercharged. If the battery is charged If it is insufficient, you need to check whether it is a fault in the battery itself or in the charging circuit.
2. If the battery operating voltage is normal, check whether the inverter drive circuit is working normally. If the drive circuit output is normal, the inverter is damaged.
3. If the inverter drive circuit is not working properly, check whether the waveform generating circuit has a PWM control signal output. If there is a control signal output, the fault is in the inverter drive circuit.
4. If the waveform generating circuit has no PWM control signal output, check whether its output is blocked due to the operation of the protection circuit. If so, identify the cause of the protection;
5. If the protection If the circuit is not working and the working voltage is normal, but the waveform generating circuit has no PWM waveform output, it means that the waveform generating circuit is damaged