Reasons that cause UPS system failure

SHIJIAZHUANG, China - Jan. 29, 2018 - PRLog -- Uninterruptible power supply (UPS) failure ranks as the No. 1 cause of unplanned data center outages, consider some of the most common UPS system components that are susceptible to failure:

Component  Function  Life expectancy  Factors affecting life expectancy

Battery

Provides power when utility power is not available

3–5 years
  · UPS replacement
· Ambient temperature
· Cycling frequency
· Maintenance
· Battery chemistry
· Battery storage

Fans

Cools the UPS

Up to 10 years
  · Load on the unit
· Ambient temperature
· Frequency of use
· Duration of use

Electrolytic capacitors

Smooths out and filters voltage spikes

Up to 10 years
  · Ambient temperature
· Humidity
MOVs  Protects circuits against excessive transient voltages  Variable  · Depends on the number and severity of surge events
Relays  Helps UPS transfer modes  Variable  · Abnormal cycling

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