Huawei UPS2000-G Series User Manual

Step 2 Switch o the AC input circuit breakers K
m
1 and K
b
1 and the AC output circuit
breaker Q1 for the UPS. After all indicators turn o and fans stop, the UPS shuts
down.
Step 3 Switch o the external battery circuit breaker (if any), or disconnect battery power
cables for the UPS. The UPS exits the parallel system.
NO TE
To merely shut down the UPS, perform Step 1 only.
----End
Transferring the Parallel System to Bypass Mode
Perform "shutdown operations" on each UPS in the parallel system. All inverters
shut down at the same time, and the parallel system transfers to bypass mode.
Transferring the Parallel System to No Output Mode
Step 1 Shut down the loads.
Step 2 Perform "shutdown operations" on each UPS in the parallel system. All inverters
shut down at the same time. The parallel system transfers to bypass mode.
Step 3 Switch
o the following circuit breakers of the UPS system: mains AC input circuit
breakers K
m
1 and K
m
2, general mains AC input circuit breaker K
m
, bypass AC input
circuit breakers K
b
1 and K
b
2, general bypass input circuit breaker K
b
, AC output
circuit breakers Q1 and Q2, and general AC output circuit breaker Q. After all
indicators turn o and fans stop, the UPSs shut down, and the loads power o.
NO TE
Perform Step 3 when the mains input and bypass input use dierent power sources. If they
share a power source, you need only to switch o the UPS AC input circuit breakers, general
AC input circuit breaker, then the UPS AC output circuit breakers, and general AC output
circuit breaker.
Step 4 Switch o the external battery circuit breaker for each UPS or the general battery
circuit breaker (when all UPSs share a battery string). If no external battery circuit
breaker is
congured, disconnect battery cables from each UPS.
----End
5.3.4 Performing EPO
Turn on the EPO switch (provided by the customer). The UPS system enters the
EPO state. That is, the UPS system shuts down the inverters, and does not transfer
to the bypass mode.
Figure 5-13 shows the EPO cable connection in a parallel system.
UPS2000-G-(6 kVA-20 kVA)
User Manual 5 Operations
Issue 21 (2022-10-13) Copyright © Huawei Technologies Co., Ltd. 108

Huawei UPS2000-G Series Specifications

General

Frequency	50/60 Hz
Output Power Factor	0.9
Humidity	0% to 95% (non-condensing)
Dimensions	Varies by model
Weight	Varies by model
Capacity	1 kVA, 2 kVA, 3 kVA
Input Voltage	220 Vac (120 Vac/208 Vac/230 Vac/240 Vac)
Output Voltage	220/230/240 VAC
Efficiency	Up to 95%
Topology	Double conversion online
Battery Type	Sealed Lead Acid
Communication Ports	USB, RS232
Optional Communication	SNMP
Operating Temperature	0°C to 40°C