Watch out for your UPS power strike

The ups ac power supply system is different from the conventional-48 v dc power supply system, which features the UPS power supply equipment has the initial phase angle and frequency synchronization requirements, and the output voltage is high, supply voltage for the AC 380V, compared with the DC power supply system, the parallel operation is much more stringent, and the implementation is more complicated. Multiple UPS devices work in parallel. If the system fails, it is easy to cause a chain reaction, which will lead to a large area of power supply interruption. In addition, once the UPS power supply system is put into operation, it cannot be stopped. Shutdown means a fault. How to ensure the safe power supply of the UPS Power Supply System becomes the most important issue for professional power supply management.

Device selected

After the construction project is determined, selecting the best equipment is the prerequisite for safe system operation in the future. Based on the group's collection and purchase, the technical indicators and user usage of various UPS devices are investigated, and the advantages and disadvantages of technical indicators are used as the main selection criteria. On the basis of moderate prices, determine the brand products using the UPS equipment to lay the foundation for stable system operation.

Formulate reasonable system equipment configuration and power supply plan

A reasonable system configuration scheme is the basis for ensuring safe power supply. during the formulation of the Scheme, it is impossible to hear the ideal publicity of multiple manufacturers in parallel. During normal system operation, only 40% ~ 50% load to ensure a certain degree of redundancy. Once one of the UPS in the system fails, the other or two can be fully charged for the normal power supply of the system. In the power supply scheme, select a server with a dual power port or use a dual-bus Output Power Supply Mode to eliminate power supply bottlenecks and ensure power supply safety. In addition, special requirements are raised for the output power distribution cabinet. In order to prevent the output from being empty open, the output power distribution cabinet must be configured with a spare one to prevent power supply interruption caused by an empty open fault.

Avoid overload using UPS

When using the UPS, You need to calculate the load size. To avoid excessive or too small loads, the UPS will work overload for a long time to shorten the service life of the UPS. If the load is too small, the working circuit of the UPS is not working normally for a long time, which also has some harm to the UPS.

Reasonable load should be controlled between 50% and 80%. Practice has proved that the UPS output load control is optimal and the reliability is optimal at around 60%. If the UPS is overloaded or the inverter fails, it will be switched to the bypass mode. At this time, the UPS does not have the backup function, and the power supply used by the load is directly supplied through the power system.

Strict acceptance

Before each new UPS power supply system is put into use, a comprehensive test of each UPS Power Supply Device is conducted in various States, including: single-host half-load test, single-host full load test, single-host overload test, multiple UPS devices Parallel Full load test, system bypass operation test, UPS running test in battery power supply status. In particular, the simulation assumes that when any ups in the system exits due to a fault, the remaining UPS equipment is fully loaded. At the same time, the battery working state is used to detect the discharge quality of the battery pack and the temperature rise of each part of the UPS equipment in various States.

Strengthen battery management

In order to keep abreast of the quality of the battery pack of the UPS power supply system, ensure that the power supply of the system is safe and reliable in the case of mains power outages. There are countless problems with the battery pack or the quality of the battery pack, therefore, the battery pack configured in the system will become the "decoration" of the deaf ears. Therefore, the management of the UPS system battery is an important measure to ensure the safe power supply of the system.

Use of AC Voltage Regulator

After using the UPS power supply, you do not need to add an AC voltage regulator. If it is necessary to add, it should be added to the front level of the UPS, that is, the mains first through the AC voltage regulator, then through the UPS, and then to the load.