Huawei DPU40D-N06A3 - Page 6

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
Contents
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
v
5.2.7 Communication Failure .....................................................................................................................................35
5.2.8 Rectifier Fault....................................................................................................................................................35
5.2.9 Rectifier Power Failure ......................................................................................................................................35
5.2.10 Communication Failure (ESMU) ......................................................................................................................36
5.2.11 All ESMU Communication Failure ...................................................................................................................36
5.2.12 Board Hardware Fault ......................................................................................................................................36
5.2.13 Low Temperature Protection ............................................................................................................................36
5.2.14 High Temperature Protection ............................................................................................................................36
5.2.15 Overcharge Protection......................................................................................................................................37
5.2.16 Overdischarge Protection .................................................................................................................................37
5.2.17 Battery Cell N Fault .........................................................................................................................................37
5.2.18 Discharge Overcurrent Protection .....................................................................................................................37
5.2.19 Charge Overcurrent Protection .........................................................................................................................38
5.2.20 Heater Fault .....................................................................................................................................................38
5.2.21 BMU Missing ..................................................................................................................................................38
5.3 Component Replacement ......................................................................................................................................38
5.3.1 Replacing a Quick Connector (PSU) ..................................................................................................................39
5.3.2 Replacing a Quick Connector (Lithium Battery) .................................................................................................42
5.3.3 Replacing a PSU (PSU Only) .............................................................................................................................43
5.3.4 Replacing PSUs (Interconnected PSUs)..............................................................................................................45
5.3.5 Replacing a PSU (PSU Plus Lithium Battery).....................................................................................................48
5.3.6 Replacing a Lithium Battery (Lithium Battery Only) ..........................................................................................49
5.3.7 Replacing a Lithium Battery (PSU Plus Lithium Battery) ...................................................................................51
5.3.8 Replacing a DC Fuse .........................................................................................................................................53
A Technical Specifications ....................................................................................................... 56
B Alarm Description ................................................................................................................. 62
C Acronyms and Abbreviations .............................................................................................. 63