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Explanation of power terms related to UPS power supply
Noise (electricallinenoise): refers to radio frequency *(RFI) and electromagnetic *(EFI) and other high frequency *, motor operation, relay action, motor controller work, radio emission, microwave radiation, and electrical storms, etc., will cause noise. Frequency drift (frequencyvariation): refers to the change of the mains frequency more than 3Hz, which is mainly due to the unstable operation of the emergency generator or the power supply caused by the unstable frequency of the power supply.
Nov 09,2021
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