Uninterruptible Power Supply (UPS backup power supply)

1. Industrial grade Uninterruptible Power Supply (UPS backup power supply) generally refers to the Uninterruptible Power Supply system used in key equipment in industries such as power, petrochemicals, metallurgy, etc. It generally adopts phase controlled rectification and high-frequency inverter technology, and the output is isolated from the mains, bypass, and DC, and the mains is isolated from DC. The UPS used in the power market requires that the mains, bypass, DC, and output be isolated, otherwise the user's DC system will not work properly.

Commercial grade UPS is applied in the uninterrupted power supply system of data centers or computer terminals in industries such as insurance and finance. Most of them use high-frequency rectification and high-frequency inverter technology, and the mains, bypass, DC, and output are not isolated.

2. Generally, industrial grade uninterruptible power supplies (UPS backup power supplies) may have poor operating environments, such as dust, high and low temperatures, high altitudes, humidity, salt spray, acid mist, harsh power grids, heavy loads, and severe electromagnetic interference on site. There are few brands that can be designed and produced domestically and internationally, and the price is generally higher than that of commercial grade UPS.

Industrial grade UPS has a high protection level, generally higher than IP31, while commercial grade UPS does not consider protection level, generally lower than IP20.

3. The industrial grade Uninterruptible Power Supply (UPS backup power supply) is enclosed in a heat dissipation duct and isolated from electrical components to prevent dust from falling into the electrical components. All components have undergone "three prevention" treatment.

Commercial grade uninterruptible power supplies (UPS backup power supplies) generally do not have special designs for dust prevention, and their components are generally not treated with "three protections".

4. Important industrial loads are usually powered by dual power grids, so industrial grade UPS is designed with two AC power inputs (main AC power and backup AC power, also known as mains and bypass), which can be isolated from each other.

The mains and bypass power of commercial grade UPS cannot be isolated and can only come from the same power grid.

5. For safety reasons, the output AC power and battery pack of industrial grade Uninterruptible Power Supply (UPS backup power supply) are isolated from the power grid. If the user accidentally touches the wiring of the output AC power and battery pack, they will not be electrocuted; The connection between the output AC power and the battery pack touching the casing will not have any impact on the operation of the industrial grade UPS. The mains power, battery pack, bypass, and output of commercial grade UPS are not isolated from the power grid. If the user accidentally touches the connection between the output AC power and the battery pack, they may be electrocuted; The connection between the output AC power and the battery pack touches the casing.

The operation of commercial grade Uninterruptible Power Supply (UPS backup power supply) will have an impact, and in severe cases, it may cause the aircraft to explode.

6. The mains, bypass, and battery pack of industrial grade Uninterruptible Power Supply (UPS backup power supply) are isolated from the output, and faults in the mains circuit, bypass circuit, and battery pack circuit (such as device damage breakdown, ignition, short circuit, etc.) will not affect the load.

The mains, bypass, and battery pack of commercial grade UPS are not isolated from the output. Malfunctions in the mains circuit, bypass circuit, and battery pack circuit (such as device damage, breakdown, ignition, short circuit, etc.) can directly affect the load, causing a situation where the UPS and load are "burnt together".

7. According to user needs, industrial grade uninterruptible power supplies (UPS backup power supplies) can be designed in various ways such as three-phase input single-phase output, three-phase input three-phase output, single-phase input single-phase output, etc.

Commercial grade uninterruptible power supplies (UPS backup power supplies) can only be designed in two ways: three-phase input and three-phase output, single-phase input and single-phase output.

8. For safety reasons, the power supply of the main circuit, control circuit, and drive circuit of industrial grade UPS is designed with multiple isolation.

Due to cost considerations, the main circuit, control circuit, and drive circuit of many commercial grade uninterruptible power supplies (UPS backup power supplies) are not isolated.

9. Due to the consideration of harsh loads on the user's site, when designing and selecting electrical materials for industrial grade uninterruptible power supplies (UPS backup power supplies), the voltage is generally selected with a margin of 2-3 times. The current is generally selected with a margin of 2-2.5 times, and the service life is generally 8-10 years. Due to cost considerations,

When designing and selecting electrical materials for commercial grade UPS, key parameters such as voltage and current are generally not selected with design margins, and the service life generally does not exceed 5 years.

10. The cabinets of industrial grade uninterruptible power supplies (UPS backup power supplies) are generally designed as industrial standard cabinets, with each cabinet generally having a width of 800mm or 600mm, a depth of 600mm or 800mm, and a height of 1800mm, 2000mm, and 2260mm.

Each cabinet of commercial grade Uninterruptible Power Supply (UPS backup power supply) is generally designed to be 600mm wide, 1070mm deep, and 1990mm high, similar in size to servers and small computers.

11. The industrial grade Uninterruptible Power Supply (UPS backup power supply) of DC is produced on an order item basis, and the cabinet color, cabinet size, communication protocol, contact signal, transmission volume, etc. are customized according to the different needs of each user.

Commercial grade uninterruptible power supplies (UPS backup power supplies) are generally mass-produced on a large scale, and cabinet colors, cabinet sizes, communication protocols, contact signals, transmission volumes, etc. cannot be customized according to different user needs.

12. The output neutral line of industrial grade Uninterruptible Power Supply (UPS backup power supply) can be directly grounded, and users do not need to consider the issue of zero ground voltage.

The output neutral line of commercial grade UPS cannot be grounded, as a high neutral voltage can burn out certain loads.