What is the modular UPS power supply for the computer room?
The modular UPS power supply in the computer room is an uninterruptible power supply system specially designed for the computer room environment, which is used to provide a continuous and reliable power guarantee to ensure that the equipment in the computer room can continue to operate when the power grid fails or the power fluctuates. It adopts a modular design and realizes redundant backup and flexible expansion by splitting the UPS system into multiple independent module combinations.
How to choose the modular UPS power supply in the computer room
When choosing a modular UPS power supply for a computer room, the following factors should be considered:
Input voltage range: The wider the input voltage range of the UPS power supply, means that it can make better use of the main power and reduce the discharge of the battery.
Output voltage and frequency range: A smaller output voltage and frequency range indicates that the UPS power supply can better adjust the mains power supply and provide stable output.
Waveform distortion rate: This parameter measures the stability of the output voltage waveform, and a lower waveform distortion rate indicates a more stable output voltage.
Voltage stability: Voltage stability indicates the stability of the output voltage when the UPS power supply suddenly changes from zero loads to full loads.
Lithium is a supplier of UPS power supplies for modular computer rooms. Their products have the following characteristics:
Modular design: The UPS system adopts a modular design, with N+X redundancy and online hot-swappable upgrade and expansion capabilities.
Load adaptability: Epno's UPS power supply has strong load adaptability and load capacity, and can handle various workloads.
Green and energy-saving: the overall efficiency of the product is higher than 95%, the input power factor is higher than 0.99, and the input current harmonic is lower than 3%, which has the characteristics of energy-saving and environmental protection.
Dual DSP controllers: The power module is equipped with dual DSP controllers, and the modules are independently controlled, reducing the risk of single-point failure.
Digital control: functions such as rectification, inverter, charging, and discharging all adopt DSP digital control, which improves the stability and reliability of the system.
When selecting UPS power capacity, the following factors should be considered:
The capacity of the UPS power supply is generally marked by apparent power (VA), while the total power of the equipment is generally expressed by active power (W). It is necessary to convert the labeled capacity of the UPS power supply into active power (active power = apparent power × power factor) for calculation.
The power factor of the UPS power supply is generally 0.9, so the apparent power should be multiplied by the power factor to obtain the active power when calculating.
A reasonable UPS power load should be between 25% and 80% of its rated power. If the load is too small, the battery cannot be fully discharged, which is not good for battery maintenance.
Operation mode, characteristics, and basic functions of UPS uninterruptible power supply
The first thing to know about the UPS market is how much the products have changed over the past few years. A traditional UPS is a static "quiet" device that a company buys, installs, and forgets it's there. This is definitely not a good thing, since UPSs require regular maintenance.
Among the many features of UPS, today's products are more intelligent, enabling them to report the status to a centralized management platform so that companies can monitor in real-time when certain equipment is abnormal. Current UPSs are also more energy efficient than their predecessors.
Design Options for 5 UPS Configurations
Once the UPS size required by the customer has been determined, the next step is to delve into the customer's acceptable level of risk, which will determine how redundant the UPS deployment should be built.
Five basic UPS design configurations offer different levels of redundancy. All of this is expressed in a calculation formula, using the letter "N" to indicate the "need" of the critical load, or the amount of power required to power the protected equipment. This is common for building IT networks and devices. Say, for example, three servers are required to support a certain application. If it is configured to use only three servers, it is an N system. If you have four servers available in case one fails, that's an N+1 system.
Five basic UPS configurations, in increasing order of reliability, are:
- Full capacity or N design
- cascade redundancy
- Parallel redundancy (N+1)
- distributed redundancy
- System + System ( 2N , 2N+1)
N systems consist of a single UPS or a group of UPSs whose capacity matches that of the critical load, see Figure 1. This is by far the most common UPS configuration, whether a single UPS under a desk or a 400kW UPS protecting a data center designed for 400kW. Consider the N system design approach as a fundamental requirement to protect critical loads.
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