● A circuit breaker needs to be installed in the upstream of the UPS to facilitate
maintenance.
● The UPS can generate large leakage currents. An RCD is not recommended. If
leakage protection is required, select a recommended circuit breaker.
● If a single UPS is congured with lead-acid batteries, the leakage current of the
6 kVA UPS and 10 kVA UPS is less than or equal to 50 mA, respectively. When
selecting a residual current circuit breaker, consider the leakage current of the
UPS and its downstream loads.
● In a parallel system, the length and specications of power cables on each UPS
should be the same to achieve current equalization in bypass mode. The power
cables include bypass input power cables and UPS output power cables.
Table 5-1 Recommended power cable specications (6 kVA UPS, single-phase input and single-
phase output)
Model Wiring Terminal Numb
er of
Phase
s
Rated
Voltage
External
Circuit
Breaker
Cable
Cross-
Sectional
Area
Terminal
Type
6 kVA
(single-
phase
input,
single-
phase
output)
Input IN_N/Input
N
IN_L/Input L
1 220 V
AC/230 V
AC/240 V
AC
50 A/2 P
(characteris
tic D)
6 mm
2
OT-6
mm
2
-
M4-90°
bending
PE - - -
10 mm
2
OT-10
mm
2
-
M4-90°
bending
Output OUT_N/
Output N
OUT_SL/
Output SL
OUT_PL/
Output PL
1 220 V
AC/230 V
AC/240 V
AC
40 A/2 P
(characteris
tic C)
6 mm
2
OT-6
mm
2
-
M4-90°
bending
PE - - -
10 mm
2
OT-10
mm
2
-
M4-90°
bending
Battery
(lead-
acid
battery)
BAT+/
Battery+/
BAT-/
Battery-/PE
- 144 V DC
to 240 V
DC (12–20
PCS of 12
V
batteries)
50 A/2 P
(characteris
tic D)
2 x 4 mm
2
OT-10
mm
2
-
M4-90°
bending
UPS2000-H-(6 kVA-10 kVA)
User Manual 5 Installation and Cable Connection
Issue 03 (2023-08-20) Copyright © Huawei Digital Power Technologies Co., Ltd. 56