Kilowatt Labs CENTAURI ENERGY SERVER User manual

CENTAURI ENERGY SERVER
User Manual
Model number: GF-20000-360Vdc-380Vac-3/3
Version 1.0; Release Date: October2019
Author:
Mamoona Khalid
(BS-EE, MS-EEE)

Introduction
The Centauri Energy Server is the first comprehensive, stand-alone, fully integrated power electronics
hardware + software platform that delivers utility grade power from any combination of DC or AC
generation sources and storage. The Centauri replaces integrated systems comprised of multiple
components (PV inverter + charge controller + battery inverter + communication software and
hardware + safety devices etc.) and can be deployed in any location, to service any kind of load profile
(from kW to MW), with or without grid access or generator availability.
The Centauri Energy Server is equipped with high speed digital DSP core control devices, advanced
high-speed IBGT, MOSFET and other power devices, combined with disturbance type (SVPWM) MPPT
control technology with pulse width modulation and double transformation system so that it can
quickly track the polar plate for the control system of high power, load change and high efficient
multiple levels under the control of the high speed DSP system to provide the load with high quality
power supply featuring stable voltage and frequency even in the cases of a sudden change of AC input
voltage and AC frequency, over/under voltage.
Legal Provisions
No part of this User Manual (“Manual”) may be reproduced, or transmitted, in any form or by any
means, without the prior written permission of Kilowatt Labs, Inc. (“Kilowatt” or the “Company”).
Specifications in this Manual are subject to change without notice. While every attempt has been
made to make the Manual accurate and up-to-date, users are cautioned that product improvements
may cause the Company to make changes to specifications without advance notice. Users are
encouraged to consult the Company or its Resellers before using the Manual. Neither the Company
nor its Resellers shall be liable for any indirect, incidental, or consequential damages under any
circumstances caused by reliance on the material presented, including, but not limited to, omissions,
typographical errors, arithmetical errors or listing errors in the content material. The content of this
manual shall not be modified without the written authorization of the Company.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Kilowatt Labs® is a registered
trademark of the Company.

Centauri Energy Server –User Manual Model Number - GF-20000-360Vdc-380Vac-3/3
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
Kilowatt Labs, Inc. | www.kilowattlabs.com
3
Table of Contents:
1. Safety Precautions: ......................................................................................................................... 7
2. Energy Server Overview:................................................................................................................. 8
2.1 Part Number:................................................................................................................................. 8
2.2 Production Profile: ........................................................................................................................ 8
2.3 System Architecture of Product:................................................................................................... 9
3 Description of Product Control:.........................................................................................................10
3.1 Control Panel:.............................................................................................................................. 10
3.2 Description of Touch Screen:......................................................................................................10
3.3 STATUS (System Warning LED) and Warning:.............................................................................14
3.4 Introduction of Buttons: .............................................................................................................15
3.4.1 Description of Selection Button Function: ............................................................................15
3.4.2 Description of Function Buttons: .......................................................................................... 16
3.5 Introduction of Breaker: .............................................................................................................17
3.6 Introduction to Line Bank: .......................................................................................................... 18
3.7 Description of Remote-Control Signal Input:..............................................................................18
3.8 Description of Output Signal at System Dry Contact:.................................................................19
4. Storage and Installation of Energy Server:........................................................................................20
4.1 Storage:.......................................................................................................................................20
4.2 Installation Notices: ....................................................................................................................20
4.3 Unpacking and Content Check:................................................................................................... 21
4.4 Determination of Mounting Positions: .......................................................................................21
4.5 Cabinet Handling:........................................................................................................................ 22
4.6 Requirements of Battery Configuration:.....................................................................................23
4.7 Incoming Line Way of System:.................................................................................................... 24
4.8 Requirements of External Distribution: ......................................................................................24
4.9 Power Cable: ...............................................................................................................................25
4.10 System Wiring: ..........................................................................................................................26
4.11 Communication Interface: ........................................................................................................27
4.12 Signal Interface: ........................................................................................................................27
5. Operating Instructions: .....................................................................................................................29
5.1 Daily ON/OFF:..............................................................................................................................29
5.1.1 Daily on Steps:....................................................................................................................... 29
5.1.2 Daily OFF Steps:..................................................................................................................... 30

Centauri Energy Server –User Manual Model Number - GF-20000-360Vdc-380Vac-3/3
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
Kilowatt Labs, Inc. | www.kilowattlabs.com
4
5.2 Emergency Stop Operation:........................................................................................................30
5.3 Clear Operation for System Fault:............................................................................................... 30
5.4 Operation Steps of MaintenanceBypass:……………………………………………………………………………………33
5.4.1 Manual Bypass ON: ............................................................................................................... 31
5.4.2 Entering Service Mode: ......................................................................................................... 31
5.5 System Setup:.............................................................................................................................. 32
5.5.1 Advanced Setup: ...................................................................................................................... 32
5.5.1.1 System Mode setting:......................................................................................................... 33
5.5.1.2 PV Auto Power-ON Setting:................................................................................................33
5.5.1.3 Input Setup of Battery Parameters: ...................................................................................33
5.5.1.4 Password Setting:............................................................................................................... 34
5.5.1.5 Other Settings:.................................................................................................................... 35
5.5.2 User Setup:............................................................................................................................... 35
5.5.2.1 MPPT Setup: ....................................................................................................................... 35
5.5.2.2 INV Setup:........................................................................................................................... 35
5.5.2.3 Off-Peak Setup:...................................................................................................................35
5.5.2.4 Protocol Setup:................................................................................................................... 36
5.5.2.5 Language Selection:............................................................................................................36
5.5.2.6 Setup of Date and Time:..................................................................................................... 36
5.5.2.7 Setup of Date Format:........................................................................................................ 36
5.5.2.8 User Password/Control Password:..................................................................................... 36
5.5.2.9 Touch Screen Calibration: ..................................................................................................36
6. Description of Working Principle:.....................................................................................................37
6.1 PV and AC normal: ...................................................................................................................... 37
6.2 AC abnormal or Absent:..............................................................................................................38
6.3 Off-Peak Power Consumption:.................................................................................................... 39
6.4 System failure: ............................................................................................................................ 40
7. Maintenance:.................................................................................................................................... 41
7.1 Preventive Maintenance:............................................................................................................ 41
7.2 Maintenance of Battery:............................................................................................................. 41
7.3Troubleshooting:……………………………………………………………………………….………..………………………….45
7.3.1 Common Troubleshooting:....................................................................................................42
7.3.2 MPPT Troubleshooting:.........................................................................................................46

Centauri Energy Server –User Manual Model Number - GF-20000-360Vdc-380Vac-3/3
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
Kilowatt Labs, Inc. | www.kilowattlabs.com
5
Table of Figures:
Fig 1 Composition of Off-grid Photovoltaic System................................................................................ 9
Fig 2 System Architecture of Product ..................................................................................................... 9
Fig 3 System Control Panel ................................................................................................................... 10
Fig 4 Description of Touch Screen......................................................................................................... 10
Fig 5 Schematic Diagram of System Installation................................................................................... 22
Figure 6 Schematic Diagram of System Handling .................................................................................23
Fig 7 Signal Interface of Remote Control.............................................................................................. 28
Fig 8 Signal Interface of Output Dry Contact ........................................................................................ 28
Fig 9 Normal Mode 1 of PV and AC....................................................................................................... 37
Fig 10 Normal Mode 2 of PV and AC..................................................................................................... 37
Fig 11 AC Abnormal Mode 1 .................................................................................................................38
Fig 12 AC Abnormal Mode 2 .................................................................................................................38
Fig 13 Off-Peak Setup Mode 1 .............................................................................................................. 39
Fig 14 Off-Peak Setup Mode 2 .............................................................................................................. 39
Fig 15 Off-Peak Setup Mode 3 .............................................................................................................. 40
Fig 16 Mode 4 for Off-peak Electricity Consumption ...........................................................................40

Centauri Energy Server –User Manual Model Number - GF-20000-360Vdc-380Vac-3/3
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
Kilowatt Labs, Inc. | www.kilowattlabs.com
6
Table of Tables:
Table 1a Description of Menu Icon of touch screen............................................................................. 12
Table 1b Description of Button Symbol of touch screen...................................................................... 14
Table 2a System LED and Alarm 1.........................................................................................................15
Table 2b System LED and Alarm 2 ........................................................................................................15
Table 3 Description of selection Buttons.............................................................................................. 16
Table 4 Description of Function Buttons .............................................................................................. 16
Table 5 Introduction of Breaker............................................................................................................ 17
Table 6 Description of Line Bank...........................................................................................................18
Table 7 Description of Remote-Control Signal Input............................................................................ 19
Table 8 Description of Output Signal at System Dry Contract.............................................................. 19
Table 9 Reference List of Power Cable .................................................................................................26
Table 10 Comparison Table of Common Faults.................................................................................... 45
Table 11 MPPT Warning Information ................................................................................................... 47

Centauri Energy Server –User Manual Model Number - GF-20000-360Vdc-380Vac-3/3
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
Kilowatt Labs, Inc. | www.kilowattlabs.com
7
1. Safety Precautions:
Please comply with the following precautions for safe use:
•Installation and maintenance must be done only by authorized technicians.
•During the installation of this product, the distance between the Energy Server and the wall
should be more than 300 mm to ensure ventilation and heat dissipation of the system.
•The temperature of the surface of the cabinet may rise when the product is in normal operation.
•Since the battery packs of all series inverters are external, the product should be equipped with
the battery packs which should meet the requirements of the rated voltage of the equipment
when in operation.
•Do not open the cabinet of the inverter, otherwise it may cause an electric shock.
•The internal inspection and maintenance should be conducted only by the authorized technical
personnel.
•After the Energy Server is turned OFF, its voltage may be still high for a long time, please do not
open the cabinet because it may cause an electric shock.
•The “Manual Bypass” switch is used for maintenance and repair of the product; therefore,
authorized technical personnel should open it.
•This system is provided with multiple PV inputs; therefore, it should be connected with the
independent loop, without the electrode grounded.
•The “EPO”button on the panel is used for the emergency stop power supply (power off) of the
Energy Server, please pay attention to its operation.
•The internal short circuit of the Energy Server will lead to the risk of an electric shock or a fire,
therefore under no circumstances should liquids be placed on it in order to avoid electric shock
or other hazards.
•Please use the dry powder fire extinguishers in the event of a fire, because the use of the liquid
fire extinguisher may cause an electric shock.
•Please install the external power switch near the Energy Server so that the power supply can be
cut OFF in the event of emergency.
•Do not store or install the Energy Server:
→Outdoors.
→In locations without cross ventilation.
→In locations near or where there is combustible gas, corrosive substances or dust.
→In locations with unusually high or low temperatures (above 40oC or below 0oC) or high

Centauri Energy Server –User Manual Model Number - GF-20000-360Vdc-380Vac-3/3
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
Kilowatt Labs, Inc. | www.kilowattlabs.com
8
humidity (90%).
2. Energy Server Overview:
2.1 Part Number:
1. Isolated Off-Grid Type
2. Capacity of Energy Server in W
3. DC Input Voltage
4. AC Output Voltage:
5. 3/3 System Input/output
2.2 Production Profile:
The OFF-grid photovoltaic power generation system mainly consists of the PV Panels, combiner box,
Energy Server, Battery and Load. The solar energy of the PV panels is sent to the combiner, after
converging, solar energy is sent to the PV input of the Energy Server, where it changes the DC into AC
to feed the load. At the same time, the Energy Server also changes AC into DC by rectifier and change
the DC into AC to the load as shown in Fig 1.
Warning!
1. The Energy Server must be reliably grounded.
2. The loss caused by the improper operation may be huge, please operate
the equipment by following the requirements of specifications.

Centauri Energy Server –User Manual Model Number - GF-20000-360Vdc-380Vac-3/3
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
Kilowatt Labs, Inc. | www.kilowattlabs.com
9
Fig 1 Composition of Off-grid Photovoltaic System
2.3 System Architecture of Product:
Fig 2 System Architecture of Product

Centauri Energy Server –User Manual Model Number - GF-20000-360Vdc-380Vac-3/3
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
Kilowatt Labs, Inc. | www.kilowattlabs.com
10
3 Description of Product Control:
3.1 Control Panel:
Fig 3 System Control Panel
3.2 Description of Touch Screen:
Fig 4 Description of Touch Screen