Huawei DPU40D-N06A3 - Page 64

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
A Technical Specifications
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
58
Item
Specifications
recovery threshold
DC input undervoltage
protection threshold
≤ 85 V DC
DC input undervoltage
recovery threshold
85–90 V DC
DC output
protection
DC output overvoltage
protection threshold
–56 V DC to –60 V DC
Default voltage: –59.5 V DC
AC surge
protection
Differential mode: 20 kA; common mode: 20 kA, 8/20 µs
DC surge
protection
Differential mode: 10 kA; common mode: 20 kA, 8/20 µs
Protection level
IP65
Safety design
IEC62368-1, IEC/EN 60950-22, IEC60950-1, GB4943-2011, YD/T
1436-2014
MTBF
500,000 hours (Ambient temperature 25°C)
Table A-3 Lithium battery (DBU20B-N12A3) specifications
Item
Specifications
Capacity
960 Wh (Due to external environmental factors, such as
temperature, transportation, and storage, the capacity may deviate
by ±5%)
Operating voltage
range
47 V DC to 57 V DC
Float charging
voltage
54.5 V DC
Maximum backup
power
2200 W
Maximum charge
current
Default: 4 A, Maximum: 10 A
Maximum discharge
current
47 A
Charge and
discharge cycles
1200 times (Charging: 4 A, discharge: 2200W, DOD: 100%,
ambient temperature 25°C)
Safety design
IEC60950-1, IEC62368-1, IEC/EN 60950-22, IEC 62619,
GB4943-2011, UN38.3
MTBF
500,000 hours (Ambient temperature 25°C, Excluding the
electrochemical cell)