PFSA140 3BSE006503R1 | ABB | Dual bus power supply module

Description

PFSA140 3BSE006503R1 | ABB | Dual bus power supply module

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PFSA140 3BSE006503R1 is a saying that dual bus is based on the requirements of the US T4 level (Tier4) standard. Figure 6 shows this dual bus UPS redundant power supply scheme. It can be clearly seen from the figure that each of the dual buses is not a single UPS, nor are they two, nor are they three, but rather a deletion number representing multiple units. At the current level of general UPS parallel connection, it should be 8 units. For example, at least 5 data centers in Taiwan use a dual bus power supply system with 8 parallel x 2. If the problem can be solved within the redundant parallel connection of 8 UPS, it is best not to easily use dual bus.

PFSA140 3BSE006503R1 when two single machine UPS can achieve 1+1 parallel redundancy, if we insist on using a dual bus solution at this time, not only will the number of devices increase exponentially, but also due to the introduction of the series function equipment STS, more fault points will be added to the energy channel, resulting in a much higher investment than when there is double 1+1 parallel redundancy, because STS is much more expensive than UPS of the same capacity, At the same time, it also loses the advantage of strong overload capacity when directly connected in parallel, and its reliability is also reduced compared to before.

PFSA140 3BSE006503R1 is well known, any solution and plan is conditional, with its specific usage environment and limitations. Therefore, it is necessary to use it everywhere without considering conditions, time, and location. Otherwise, not only will the expected goals not be achieved, but it will also result in twice the result with half the effort.

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