KEHUA TECH MR33 Series User manual

MR33 Series (300K-800K) Modular UPS
User Manual

All rights reserved ©Kehua Hengsheng Co., Ltd.
i
Copyright © Kehua Hengsheng Co., Ltd. 2020.All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Kehua Hengsheng Co., Ltd.
Trademarks and Permissions
and other Kehua trademarks are trademarks of Kehua Hengsheng Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
The purchased products, services and features are stipulated by the contract made between Kehua and the
customer. All or part of the products, services and features described in this document may not be within the
purchase scope or the usage scope. Unless otherwise specification in the contract, all statements, information,
and recommendations in this document are provided “AS IS”without warranties, guarantees or
representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
KEHUA HENGSHENG CO.,LTD.
Address:
No.457,MalongRoad,TorchHigh-TechIndustrialZone,Xiamen,Fujian,China
Manufacturer:
ZHANGZHOU KEHUA TECHNOLOGYCO.,LTD.
Postal Code:
361000(XIAMEN), 363000(ZHANGZHOU)
Website:
www.kehua.com
E-mail:
[email protected]
The Customer Service
Telephone:
400-808-9986
Tel:
0592-5160516
Fax:
0592-5162166

Foreword
MR33 Series (300K-800K) Modular UPS
User Manual
ii
All rights reserved ©Kehua Hengsheng Co., Ltd.
Foreword
Summaries
Thank you for choosing the modular MR series modular UPS!
This document gives a description of the MR series modular UPS, including the features,
performance, appearance, structure, working principles, installation, operation and maintenance etc.
Please save the manual after reading, in order to consult in the future.
The figures in this manual are just for reference, for details please see the actual product.
Suitable Model
⚫MR33300（Top wiring）
⚫MR33400、MR33500
⚫MR33600、MR33800
Symbol Conventions
The manual quotes the safety symbols, these symbols used to prompt users to comply with safety
matters during installation, operation and maintenance. Safety symbol meaning as follows.
Symbol
Description
Alerts you to a high risk hazard that could, if not avoided, result in
serious injury or death.
Alerts you to a medium or low risk hazard that could, if not
avoided, result in moderate or minor injury.
Alerts you to a potentially hazardous situation that could, if not
avoided, result in equipment damage, data loss, performance
deterioration, or unanticipated results.

MR33 Series (300K-800K) Modular UPS
User Manual
Foreword
All rights reserved ©Kehua Hengsheng Co., Ltd.
iii
Symbol
Description
Anti-static prompting.
Be care electric shock prompting.
Provides a tip that may help you solve a problem or save time.
Provides additional information to emphasize or supplement
important points in the main text.
Product standard: Q/ZZKJ 007
Change History
Changes between document issues are cumulative. The latest document issue contains all the changes
made in earlier issues.
Issue 001 (2020-05-30)
First issue.

Contents
MR33 Series (300K-800K) Modular UPS
User Manual
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All rights reserved ©Kehua Hengsheng Co., Ltd.
Contents
1 Safety Description.........................................................................................................................1
1.1 Safety Announcements.....................................................................................................................................1
1.1.1 Safety Instructions ..................................................................................................................................1
1.1.2 Use Announcements for Battery .............................................................................................................4
1.1.3 Anti-Static Protection..............................................................................................................................5
1.1.4 Grounding Requirements ........................................................................................................................5
1.1.5 Safety Warning Label Setting .................................................................................................................5
1.2 Operation and Maintenance Requirements ......................................................................................................5
1.3 Environment Requirements..............................................................................................................................7
2 Overview.........................................................................................................................................8
2.1 Product Intro.....................................................................................................................................................8
2.2 Features ............................................................................................................................................................8
2.3 Work Principle................................................................................................................................................10
2.3.1 Work Principle Diagram .......................................................................................................................10
2.3.2 Work Mode ...........................................................................................................................................10
2.4 Structure .........................................................................................................................................................12
2.4.1 Sturcture Layout....................................................................................................................................15
2.5 Assembly unit illustration...............................................................................................................................17
2.5.1 Power Module/Bypass Module.............................................................................................................17
2.5.2 System Control Box..............................................................................................................................18
2.6 Optional accessories.......................................................................................................................................22
2.6.1 SNMP card and software ......................................................................................................................22
2.6.2 Expansion cards ....................................................................................................................................25
2.6.3 Parallel System Connection ..................................................................................................................27

MR33 Series (300K-800K) Modular UPS
User Manual
Contents
All rights reserved ©Kehua Hengsheng Co., Ltd.
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2.6.4 Synchronous BSC .................................................................................................................................27
2.6.5 Battery temperature compensation........................................................................................................27
2.6.6 Lightning protection facilities...............................................................................................................28
2.7 Alarm Function...............................................................................................................................................28
3 Installation....................................................................................................................................39
3.1 Installation Procedure.....................................................................................................................................39
3.2 Installation Preparation ..................................................................................................................................40
3.2.1 Installation Tools...................................................................................................................................40
3.2.2 Installation Environment.......................................................................................................................41
3.2.3 Installation Space..................................................................................................................................42
3.2.4 Input and Output Wire Selection...........................................................................................................42
3.2.5 Surge Protection Device........................................................................................................................44
3.2.6 Reverse Feedback Protection (Optional)...............................................................................................44
3.3 Transportation and Unpacking .......................................................................................................................44
3.3.1 Transportation .......................................................................................................................................44
3.3.2 Unpacking.............................................................................................................................................45
3.4 Mechanical Installation ..................................................................................................................................47
3.5 Install optional accessory ...............................................................................................................................52
3.5.1 SNMP card............................................................................................................................................52
3.5.2 Dry contact expansion card/BMS expansion card ................................................................................52
3.6 System Wiring................................................................................................................................................53
3.6.1 MR33300 (Top wiring) .........................................................................................................................53
3.6.2 MR33400, MR33500, MR33600 ..........................................................................................................57
3.6.3 MR33800 ..............................................................................................................................................61
3.7 Parallel System Connection ...........................................................................................................................65
3.7.1 Parallel system connection of MR33300 ..............................................................................................65
3.7.2 Parallel system connection of MR33400, MR33500, MR33600 ..........................................................65
3.8 System Check and Test...................................................................................................................................66
3.8.1 Check Electrical Connection.................................................................................................................66
3.8.2 UPS Test................................................................................................................................................67

Contents
MR33 Series (300K-800K) Modular UPS
User Manual
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All rights reserved ©Kehua Hengsheng Co., Ltd.
3.8.3 Connect Load........................................................................................................................................67
4 Touch Screen Operation and Setting ......................................................................................68
4.1 Menu Structure...............................................................................................................................................68
4.2 Main Page ......................................................................................................................................................69
4.3 System Work Status Display ..........................................................................................................................70
4.4 Buzzer Control Function ................................................................................................................................75
4.5 Monitor Function ...........................................................................................................................................75
4.5.1 Bypas Information ................................................................................................................................75
4.5.2 Mains Information ................................................................................................................................76
4.5.3 Battery Information...............................................................................................................................77
4.5.4 Power Module Information...................................................................................................................77
4.5.5 Inverter Information..............................................................................................................................78
4.5.6 Output Information ...............................................................................................................................79
4.6 Information Query..........................................................................................................................................79
4.6.1 Event log...............................................................................................................................................80
4.6.2 User Log ...............................................................................................................................................80
4.6.3 Device Information ...............................................................................................................................81
4.7 ON/OFF .........................................................................................................................................................82
5 Use and Operation ......................................................................................................................84
5.1 Use Announcements.......................................................................................................................................84
5.2 Operation Procedure.......................................................................................................................................84
5.3 UPS Start and Shutdown................................................................................................................................85
5.3.1 Check before Startup.............................................................................................................................85
5.3.2 Startup...................................................................................................................................................85
5.3.3 UPS Shutdown......................................................................................................................................87
5.3.4 Switch to Bypass Mode Manually ........................................................................................................88
5.3.5 Switch to Maintenance Bypass Mode From Normal Output ................................................................88
5.3.6 Switch to Inverter Power Supply from Maintenance Bypass................................................................89
5.3.7 Emergency Power Off (EPO)................................................................................................................90
5.3.8 Emergency Power Off Recovery...........................................................................................................90

MR33 Series (300K-800K) Modular UPS
User Manual
Contents
All rights reserved ©Kehua Hengsheng Co., Ltd.
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5.4 Parallel System Startup and Shutdown...........................................................................................................90
5.4.1 Start Parallel System.............................................................................................................................90
5.4.2 Shutdown Parallel System ....................................................................................................................93
5.4.3 Emergency Power Off (EPO)................................................................................................................94
6 Maintenance and Troubleshooting .........................................................................................95
6.1 Maintenance Guide ........................................................................................................................................95
6.1.1 Safety Precautions.................................................................................................................................95
6.1.2 Preventive Maintenance........................................................................................................................95
6.2 Battery Maintenance ......................................................................................................................................96
6.3 Announcementsfor Battery Replacement.......................................................................................................96
6.4 Troubleshooting..............................................................................................................................................97
6.4.1 Common Abnormal Phenomena Diagnosis ..........................................................................................97
6.4.2 Emergency Dispose for System Fault ...................................................................................................99
7 Package, Transportation and Storage....................................................................................100
7.1 Package ........................................................................................................................................................100
7.2 Transportation ..............................................................................................................................................100
7.3 Storage .........................................................................................................................................................100
A Technical Specifications .........................................................................................................101
B Physics Characters....................................................................................................................106
C Acronyms and Abbreviations................................................................................................108