Huawei UPS2000-G-6 kVA - Page 38

UPS2000-G-(6 kVA-20 kVA)
User Manual
3 Installation
Issue 13 (2019-05-05)
Copyright © Huawei Technologies Co., Ltd.
30
The UPS has no built-in backfeed protection device. You can install a backfeed protection
device on the input front side.
If you do no install a backfeed protection device on the input front side, attach a warning label
to the main power isolation device. The label reads like this: "This circuit supplies power to
the UPS. Before cable connection, disconnect the UPS, and check the voltage across wiring
terminals."
When battery mode is unavailable or the mains fails, the UPS internal voltages or energy may
flow 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 3-3 Rated voltages and currents for backfeed protection contactors
Model
Rated Voltage and Current
Recommended
Contactor Models
(Schneider contactors)
UPS2000-G-6KRTS
220/230/240 V AC, 40 A
LC1-D40A
UPS2000-G-6KRTL
UPS2000-G-10KRTS
220/230/240 V AC, 65 A

LC1-D50A for
single-phase input

LC1-DT60A for
three-phase input
UPS2000-G-10KRTL
UPS2000-G-15KRTL
(three-phase input)
220/230/240 V AC, 32 A

LC1-D80 for
single-phase input

LC1-DT60A for
three-phase input
UPS2000-G-20KRTL
(three-phase input)
220/230/240 V AC, 40 A
UPS2000-G-15KRTL
(single-phase input)
UPS2000-G-20KRTL
(single-phase input)
220/230/240 V AC, 125 A
Table 3-4 Control relay parameters
Recommended Model
Parameters
HF18FF/012 (HONGFA control relay)
Dry contact: NC
Breaking capability: 250 V AC, 5 A
Coil: 12 V rated voltage; rated current of
less than 1 A
MY2N-J DC12V (OMRON control relay)
HJ2-L-DC12V (Panasonic control relay)