Pay attention to the choice of reliable UPS equipment

Choosing reliable equipment will affect the overall cost of your UPS system. The most important point when comparing the values ​​of confidence coefficient given by UPS manufacturers is to pay attention to its robustness and stability. Make sure every manufacturer uses standard calculations in making their products.

Confidence factor

The coefficient of reliability of a UPS system determines how much power the machine can perform for its intended purpose (uninterrupted power supply with a suitable power supply) within a specific time frame.

Defect

This parameter indicates the inability of a UPS to perform the tasks intended for it. Device failure can be internal or due to an operating environment outside the device.Note: The bug usually “causes the quality of the device to decline but does not always cause system failure.

Error

Error is an abnormal physical state such as a fault in the design of the device, difficulty in making it, inadequate raw materials, impact, depreciation, and so on. Error represents the error of a system; in other words, the status of the system differs from that defined for it.

MTBF
The average time between failures is a value that is calculated based on probabilities and indicates the average time the device is healthy in the event of successive failures.

MTTR
Average repair time, this parameter represents the time elapsed from the time of fault diagnosis to complete failure. MTTR depends on many factors, such as the size and quality of the service center, the availability of spare parts, the internal UPS structure, how its internal components are located, and so on.

Definition of MTBF

MTBF values ​​for a UPS are valid only if calculated in terms of MTBF UPS and MTTR UPS.

Error rate (λ)

The error rate is a statistical parameter and, based on the probabilities, states that the system that has been operating for a specified time t will not be damaged in the intervals below.

Availabity  

Availabity is a useful scale (annual non-working time) for measuring system failures and repairs, based on the probability that the device operates at time t.