Comparison of Three Backup Power Supplies

With the continuous development of China's economy and the increasing popularity of computer applications, the requirements for power grid supply reliability are getting higher and higher. To ensure uninterrupted power supply for important emergency lighting, monitoring systems, computers, fire protection, especially important equipment in metallurgy, chemical industry, etc., UPS power supplies, diesel generators, and EPS power supplies are generally configured. The following is a brief introduction of the three backup power supplies, hoping to help you further understand the differences between them.

1.Differences between the Three Backup Power Supplies

EPS is an emergency power supply, which can continue to supply power to the load in case of power outage to ensure no power interruption and protect people's lives and property. EPS power supplies can be divided into three categories: emergency lighting, power supply and power frequency conversion.

UPS is an uninterruptible power supply, which can supply power to equipment for a certain period of time, giving users enough time to deal with the situation when the power supply is abnormal or suddenly interrupted.

Diesel generator sets are divided into common diesel generator sets and emergency diesel generator sets. Relevant electrical regulations and national standards stipulate that Class I high-rise buildings should be supplied with power according to Class I load and must use emergency diesel generator sets.

2.Application Fields

In China, EPS is mainly used for fire loads and some electrical equipment that do not require high-quality power but need to ensure continuous power supply. It only emphasizes the function of continuous power supply. When EPS is used for fire loads, its product technology is subject to the fire certification of the Ministry of Public Security.

UPS power supplies are widely used in computers and digital information systems. They need to have high-quality power supply loads, mainly emphasizing the switching time of the inverter, output voltage, frequency stability, purity of output waveform, etc.

Diesel generators are used in places not connected to the power grid, or as emergency power supplies when the power grid fails, such as peak tripping, grid support and grid output. Important communication facilities, nuclear power plants, hospitals, industrial manufacturers, hotels and office buildings are also equipped with standby emergency diesel generator sets.

3.Power Supply Methods

When the power supply is normal, various EPS power supplies directly supply power to the load through the bypass. The backup UPS and online interactive UPS in UPS power supplies provide adjusted and purified municipal power through the bypass, while the online UPS in UPS power supplies always provides pure inverter alternating current with the same frequency, phase and small error.

When the power supply is interrupted, EPS power supply and UPS power supply provide inverter alternating current for the load. In order to better protect information and equipment, UPS power supply automatically converts to inverter power supply when the power supply is abnormal, including transient overvoltage, voltage sag, wire noise, frequency offset, continuous low voltage, etc.

Diesel generator is a kind of AC power supply equipment for self-provided power station. Diesel generator is a device that converts the mechanical energy of diesel engine into electrical energy. It uses diesel engine as power to drive the generator. It is a small independent power generation equipment that uses internal combustion engine as power to drive synchronous generator.

To sum up, when choosing UPS power supply, diesel generator and EPS power supply, we must distinguish their nature, occasion, purpose and make a reasonable choice.

Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to [email protected] we will pay highly attention on your question.