Legend 1: Mission-critical equipment requires zero APC uninterruptible power supply (UPS)switching time, for example, to prevent locking and/or packet loss in network switches.
Reality: Practically all mission-critical equipment uses SMPS as a power source. They must have a “withstand” time of 10 milliseconds or more to meet international standards. Any electronic device that cannot sustain this-endurance time is generally considered an inferior design or special case-most likely a special application (such as a non-computer or non-I device).
Legend 2: The online interactive APC uninterruptible power supply will not adjust the power, and unobstructed noise and spike pulses can damage the power supply.
Reality: High quality online interactive devices are equipped with powerful surge and noise suppression functions, which can ensure that their output is within an acceptable range, so that load reliability will not be affected.
Legend 3: Online APC uninterruptible power supply can provide better protection against common mode (CM) noise.
Reality: Although online and online interactive topologies including current isolation can be designed, they typically use passive components to reduce CM voltage. Neither online topology nor online interactive topology can provide fundamental advantages in this regard. SMPS already has current isolation, so there is no need to use external isolation.
Legend 4: More precise voltage regulation has improved the performance and reliability of I equipment.
Reality: All SMPSs convert AC input voltage (including spike pulses and distortion) into stable DC. Then, use this DC to create clean, strictly regulated DC outputs for all IT loads. The input line conditions within the rated range will not affect the quality of the SMPS output or the performance of the I device. Otherwise, why does SMPS still label this range on its casing?