Typical Configurations; Single Ups; 1+1 Parallel System - Huawei UPS5000-E Series User Manual

UPS5000-E-(20 kVA-160 kVA)
User Manual (Low voltage)

2.5 Typical Configurations

Table 2-9 Typical configurations
Function

Single UPS

1 + 1 parallel system
Dual-bus system
2.5.1 Single UPS
The UPS5000-E has a modular structure. Its power modules are connected in parallel to
deliver a high loading capability. If a single power module develops a fault, the other power
modules continue working. So long as the load is not too large, this redundant capacity can
continue to provide power and therefore helps ensure reliability.

2.5.2 1+1 Parallel System

In an 1+1 parallel system, mains input, bypass input, and AC output terminals between
cabinets are connected in parallel. Energy control modules (ECMs) on each UPS are
connected over parallel cables. The parallel connections synchronize the UPS outputs to
supply power to loads. If one UPS fails, the other UPSs continue supplying power to loads.
Issue 03 (2020-04-27)
If cables are prepared onsite, follow the three methods below:
 Connect pin 1 and pin 2. Pin 1 connects to RS485+ and pin 2 connects to RS485–.
 Connect pin 4 and pin 5. Pin 4 connects to RS485+ and pin 5 connects to RS485–.
 Connect pins 1, 2, 4, and 5. Twist cables to pin 1 and pin 4 into one cable and then connect it to
RS485+. Twist cables to pin 2 and pin 5 into one cable and then connect it to RS485–.
Application Scenario
A single UPS5000-E is applicable to scenarios with light loads. Its
power will be redundant when loads are light as it adopts modular
design.
A 1 + 1 parallel system supplies power to important loads in
small- and medium-sized equipment rooms. It features high
reliability and powerful transient overload capacity.
The dual-bus system is suitable for scenarios where highly reliable
power supply is required. The dual-bus system supplies power to
important loads in large- and medium-sized equipment rooms and
data centers. The dual-bus system is highly reliable, but its
configuration is complex.
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