How Different Type Of Inverter Or Ups Protect Devices From Electrical Fault

A UPS or uninterruptible power supply is a device that maintains power by battery when the power fails or an electrical fault occurs (e.g. over voltage) in the mains. Thus they serve to protect the devices are connected and keep them running before any of the 9 types of electrical fault: power failure, rising or falling voltage, low or high voltage, electrical noise, frequency variation, switching transients and harmonic distortion. According to its mode of operation topology, three types of UPS are distinguished:

Off-line UPS or Stand-By: Provide the most basic protection of all. Protect against 3 of the 9 problems that can cause the power grid: failures, ups and brownouts. Food in a off-line UPS comes from the mains and if any of the anomalies indicated in supply, the device begins to generate its own power. Because they are not active, there is a small switching time in which no electricity supply, typically 2-10 ms. They generate a waveform that is not sinusoidal, so they are not suitable to protect sensitive or sensitive to waveform feeding devices. It’s most common use is in the protection of domestic devices such as computers, monitors, televisions, etc.

In-line UPS or line interactive: They provide an intermediate protection solving 5 of the possible electrical faults. Regarding the off-line UPS, added protection against low or high voltages that occur continuously. The operation is similar to the UPS off-line but has active filters that stabilize the input voltage (stabilizer AVR type) correcting low and high voltages when the power grid produces continuously, thus expanding the degree of protection. Only in case of power failure or serious anomaly they begin to generate their own power. Like the UPS off-line type having a small switching time in which no electricity supply, typically 2-10 ms. Usually they generate a form of pseudo-sine waveof higher quality than off-line UPS or pure sinusoidal in the case of models sinusoidal and professionals. It’s most common use is the protection of devices in homes with abnormal voltages, small businesses or companies, computers, monitors, network devices such as routers and switches, security cameras and video recorders, etc. UPS in-line with pure sinusoidal output are suitable for protecting pumps and electric hoists can, more sensitive and sophisticated equipment such as servers, computers with active sources PFC, laboratory instrumentation and sophisticated equipment in working environments where required silent quality protection.

On-line UPS: The most sophisticated of all topology. It offers complete protection from 9 problems that may be in power: Power failure, rising or falling voltage, low or high voltage, electrical noise, frequency variation, switching transients and harmonic distortion. The device continuously generates a clean power with a pure sine wave through technology double conversion. These system current mains (AC) to direct current (DC) works by passing through a first conversion by a rectifier, which feeds an internal bus and charger batteries. A second conversion means by a DC / AC current inversion internal bus becomes pure sinusoidal output and is generated, being the protected load of any anomaly of the mains. As the batteries are also connected to the internal bus, when a power outage occurs, the inverter switches to feed from them without cuts or commutations. Therefore, in case of failure or interruption in the power supply, protected devices are not affected at any time because there is no switching time. Its most common use is in the protection of sensitive or critical loads and valuable companies, such as servers, network electronics, computer monitor, video recorders and cameras security devices, etc. Su-Kam Inverter & Home UPS is the best solutions for each types of electrical fault.