UPS2000-G-(3 kVA-20 kVA)-V2
User Manual (Two Live Wires)
3 Installation
Issue 07 (2019-12-19)
Copyright © Huawei Technologies Co., Ltd.
32
In the case of three-phase input, install a three-phase disconnector. In the case of
single-phase input, you are advised to install a disconnector.
When used to power IT system, the UPS (three-phase output) should provide 4-pole
disconnectors, and the UPS (single-phase output) should provide 2-pole disconnectors.
The UPS is a large leakage current device. Do not configure a circuit breaker that has the
leakage current protection function. If you need leakage current protection function, use
the earth leakage circuit breaker recommended.
The leakage current of the 3 kVA or 6 kVA UPS is less than or equal to 100 mA. The
leakage current of the 10 kVA UPS is less than or equal to 200 mA. The leakage current of
the 15 kVA or 20 kVA UPS is less than or equal to 500 mA.
When selecting the earth leakage circuit breaker (ELCB), consider the leakage current of
the UPS and downstream loads.
The battery cable cannot be longer than 10 m.
You can install linked circuit breakers for both the N wire and L wire. No independent
circuit breaker is allowed for only the N wire.
For 15 kVA/20 kVA model, use ground cables that have a cross-sectional area of 25 mm
2
and M6 OT terminals that are 90° bent and have a cross-sectional area of 25 mm
2
.
For 15 kVA/20 kVA model, use battery cables that have a cross-sectional area of 16 mm
2
and M6 OT terminals that are 90° bent and have a cross-sectional area of 16 mm
2
.
For 3 kVA model, use ground cables that have a cross-sectional area of 4 mm
2
and M4 OT
terminals and have a cross-sectional area of 4 mm
2
.
For 6 kVA model, use ground cables that have a cross-sectional area of 6 mm
2
and M4 OT
terminals and have a cross-sectional area of 6 mm
2
.
For 10 kVA model, use ground cables that have a cross-sectional area of 10 mm
2
and M6
OT terminals and have a cross-sectional area of 10 mm
2
.
lists the recommended power cable specifications.
Table 3-2
Recommended power cable specifications
Model
Wiring
Termin
al
Numb
er of
Phases
Rated
Voltage
External
Circuit
Breaker
Cross-s
ectional
Area
Termin
al Type
Torqu
e for
Tighte
ning
Bolts
3 kVA
(dual-live-
wire input
dual-live-
wire
output)
Dual-liv
e-wire
input
2
208 V
AC, 220
V AC
32 A (the
characteri
stics of D)
4 mm
2
4 mm
2
M4 OT
terminal
1.4 N
m
Dual-liv
e-wire
output
2
32 A (the
characteri
stics of D)
Battery
N/A
240 V
DC
32 A
4 mm
2
N/A
3 kVA
(single-ph
Input
1
220 V
AC, 230
32 A (the
characteri
4 mm
2
4 mm
2
M4 OT
1.4 N
