When battery mode is unavailable or the mains fails, the UPS internal voltages or
energy may ow back directly, or through a leakage path, to an input terminal. To
minimize the risk of electric shocks, install a backfeed protection device on the
input side.
Table 3-2 Rated voltages and currents for backfeed protection contactors
Model Single-phase/three-phase Two live wires
Rated Voltage
and Current
Recommended
Contactor
Models
(Schneider
contactors)
Rated
Voltage and
Current
Recommen
ded
Contactor
Models
(ABB
contactors)
UPS2000-
G-6KRTL
(dual-live-
wire input
dual-live-
wire
output)
220 V AC, 230 V
AC, 240 V AC, 40
A
LC1-D40A 208 V AC,
220 V AC, 40
A
AF50-30-11*
70
UPS2000-
G-10KRTL
(dual-live-
wire input
dual-live-
wire
output)
220 V AC, 230 V
AC, 240 V AC, 65
A
● LC1-D50A for
single-phase
input
● LC1-DT60A
for three-
phase input
208 V AC,
220 V AC, 65
A
AF50-30-11*
70
UPS2000-
G-15KRTL
(three-
phase
input)
220 V AC, 230 V
AC, 240 V AC, 32
A
LC1-DT60A for
three-phase
input
N/A N/A
UPS2000-
G-20KRTL
(three-
phase
input)
220 V AC, 230 V
AC, 240 V AC, 40
A
N/A N/A
UPS2000-
G-15KRTL
(single-
phase
input)
UPS2000-
G-20KRTL
(single-
phase
input)
220 V AC, 230 V
AC, 240 V AC,
125 A
LC1-D80 for
single-phase
input
208 V AC,
220 V AC,
125 A
AF110-30-11
*70
UPS2000-G-(6 kVA-20 kVA)
User Manual 3 Installation
Issue 21 (2022-10-13) Copyright © Huawei Technologies Co., Ltd. 45
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