Huawei UPS5000-H User Manual page 29

UPS5000-H-(1200 kVA-1600 kVA)
User Manual (100 kVA Power Modules)
Single UPS
The UPS uses a modular design. It uses multiple power modules connected in
parallel to deliver a high loading capacity. If one power module is faulty, other
power modules continue working. If loads are light, the UPS provides redundant
capacity even if only a single UPS is operating, which ensures high reliability.
Figure 2-1 Typical application scenario of a single UPS
Parallel System
In a parallel system, mains input, bypass input, and AC output terminals of UPSs
are connected in parallel. ECMs on different UPSs are connected over parallel
cables to synchronize UPS outputs to supply power to loads. If one UPS fails,
another UPS continues supplying power to loads, which ensures system reliability.
Figure 2-2 Typical application scenario of 1+1 parallel system
Issue 05 (2021-10-13)
NO TE
For the three-phase four-wire model, if the mains and bypass use different power sources,
ensure that the neutral wires of the mains and bypass input power sources are
equipotential. For example, the mains and bypass inputs are from the same transformer.
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