Huawei DPU40D-N06A3 User Manual page 6

DPU40D-N06A3, DBU20B-N12A3, and

DBU50B-N12A1 Distributed Power System

User Manual

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

Issue 04 (2020-02-29)

Copyright © Huawei Technologies Co., Ltd.

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