Kilowatt Labs GF-80000-360Vdc-380Vac-3/3 User manual

CENTAURI ENERGY SERVER
User Manual
Model number: GF-80000-360Vdc-380Vac-3/3
Version 1.0; Release Date: May 2020
Author:
Mamoona Khalid

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-80000-360Vdc-380Vac-3/3
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
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Table of Contents:
1 Safety Precautions: .............................................................................................................................. 8
2 Energy Server Overview:.................................................................................................................... 10
2.1 Part Number:............................................................................................................................... 10
2.2 Mechanical Specifications:..........................................................................................................10
2.3 Production Profile: ......................................................................................................................11
2.4 System Architecture of Product:................................................................................................. 12
3 Description of Energy Server Control: ............................................................................................... 13
3.1 Control Display Panel:.................................................................................................................13
3.1.1 Panel Operation: ......................................................................................................................14
3.2 Description of Touch Screen: ......................................................................................................15
3.3 STATUS (System Warning LED) and Warning:.............................................................................18
3.4 MPPT module panel indicators and alarm warnings: ................................................................. 20
3.5 Introduction of Buttons: ............................................................................................................. 21
3.5.1 Description of Selection Button Function:............................................................................... 21
3.5.2 Description of Function Buttons:.............................................................................................21
3.6 Introduction of Breaker: .............................................................................................................22
3.7 Introduction to Line Bank: .......................................................................................................... 23
3.8 Description of Remote-Control Signal Input:.............................................................................. 23
3.9 Description of Output Signal at System Dry Contact:................................................................. 24
4 Storage and Installation of Energy Server:......................................................................................... 25
4.1 Storage:.......................................................................................................................................25
4.2 Installation Notices: ....................................................................................................................25
4.3 Unpacking and Content Check:................................................................................................... 26
4.4 Determination of Mounting Positions: .......................................................................................27
4.5 Cabinet Handling:........................................................................................................................ 28
4.6 Requirements of Battery Configuration:..................................................................................... 29
4.7 Incoming Line Way of System:.................................................................................................... 29
4.8 Requirements of External Protective Devices:............................................................................29
4.9 Power Cable: ...............................................................................................................................30
4.10 Energy Server Wiring Description:............................................................................................ 31
4.11 Communication Interface: ........................................................................................................36
4.12 Signal Interface: ........................................................................................................................37

Centauri Energy Server –User Manual Model Number -GF-80000-360Vdc-380Vac-3/3
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4.13 Parallel Signal Port: ...................................................................................................................38
5 Operating Instructions:...................................................................................................................... 39
5.1 Power ON/OFF: ...........................................................................................................................39
5.1.1 Precautions: .............................................................................................................................39
5.1.2 Power ON Steps: ...................................................................................................................... 39
5.1.3 Power OFF Steps: ..................................................................................................................... 40
5.1.4 Power ON Procedures (Parallel system): .................................................................................40
5.1.5 Power OFF Procedures (Parallel system):................................................................................ 41
5.2 Emergency Stop Operation:........................................................................................................ 42
5.3 Clear Operation for System Fault:............................................................................................... 42
5.4 Maintenance Bypass Operation:.................................................................................................42
5.4.1 Precautions: .............................................................................................................................42
5.4.2 Entering Service Mode:............................................................................................................43
5.5 System Settings:.......................................................................................................................... 44
5.5.1 Advanced Setup: ...................................................................................................................... 44
5.5.1.1 System Mode settings:..........................................................................................................44
5.5.1.2 PV Auto Power-ON Setting: .................................................................................................. 45
5.5.1.3 Input Setup of Battery Parameters:...................................................................................... 45
5.5.1.4 Password Setting:.................................................................................................................. 47
5.5.1.5 Other Settings: ......................................................................................................................47
5.5.2 User Settings: ...........................................................................................................................47
5.5.2.1 MPPT Settings: ......................................................................................................................47
5.5.2.2 INV Settings:.......................................................................................................................... 47
5.5.2.3 Off-Peak Settings:..................................................................................................................48
5.5.2.4 Protocol Settings:.................................................................................................................. 48
5.5.2.5 Language Selection: ..............................................................................................................48
5.5.2.6 Date and Time Settings:........................................................................................................ 48
5.5.2.7 Date Format Settings: ...........................................................................................................48
5.5.2.8 User Password/Control Password:........................................................................................48
5.5.2.9 Touch Screen Calibration:.....................................................................................................49
6 Description of Energy Server Working Principle:............................................................................... 50
6.1 PV and AC Normal:...................................................................................................................... 50
6.2 AC Abnormal or Absent: .............................................................................................................51
6.3 Off-Peak Power Consumption:.................................................................................................... 52

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6.4 System Failure:............................................................................................................................ 53
7 Maintenance and Troubleshooting:...................................................................................................54
7.1 Preventive Maintenance:............................................................................................................ 54
7.2 Maintenance of Battery:............................................................................................................. 54
7.3 Troubleshooting:.........................................................................................................................55
7.3.1 Common Troubleshooting: ......................................................................................................55
7.3.2 MPPT Troubleshooting:............................................................................................................59

Centauri Energy Server –User Manual Model Number -GF-80000-360Vdc-380Vac-3/3
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List of Figures:
Fig 1 Composition of Off-grid Photovoltaic System.............................................................................. 11
Fig 2 System Architecture of Product ................................................................................................... 12
Fig 3 System Control Panel ................................................................................................................... 13
Fig 4 Description of Touch Screen......................................................................................................... 15
Fig 5 Schematic Diagram of System Installation................................................................................... 27
Fig 6 Schematic Diagram of System Handling....................................................................................... 28
Fig 7 Signal Interface of Remote Control.............................................................................................. 37
Fig 8 Signal Interface of Output Dry Contact ........................................................................................ 38
Fig 9 Normal Mode 1 of PV and AC....................................................................................................... 50
Fig 10 Normal Mode 2 of PV and AC.....................................................................................................50
Fig 11 AC Abnormal Mode 1 ................................................................................................................. 51
Fig 12 AC Abnormal Mode 2 ................................................................................................................. 51
Fig 13 Off-Peak Setup Mode 1 ..............................................................................................................52
Fig 14 Off-Peak Setup Mode 2 .............................................................................................................. 52
Fig 15 Off-Peak Setup Mode 3 .............................................................................................................. 53
Fig 16 Mode 4 for Off-peak Electricity Consumption ...........................................................................53

Centauri Energy Server –User Manual Model Number -GF-80000-360Vdc-380Vac-3/3
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List of Tables:
Table 1 Symbols Representation ..........................................................................................................14
Table 2 Symbols Function .....................................................................................................................14
Table 3 Front Panel Buttons Function...................................................................................................14
Table 4 Description of Menu Icon of Touch Screen..............................................................................17
Table 5 Description of Button Symbol of Touch Screen .......................................................................18
Table 6 System LED and Alarm 1...........................................................................................................19
Table 7 System LED and Alarm 2...........................................................................................................20
Table 8 Description of Selection Buttons..............................................................................................21
Table 9 Description of Function Buttons ..............................................................................................21
Table 10 Introduction of Breaker..........................................................................................................22
Table 11 Description of Line Bank.........................................................................................................23
Table 12 Description of Remote-Control Signal Input..........................................................................24
Table 13 Description of Output Signal at System Dry Contract............................................................24
Table 14 Reference List of Power Cable ...............................................................................................31
Table 15 AC Main Wiring Method.........................................................................................................32
Table 16 Input Dry Contacts Description ..............................................................................................37

Centauri Energy Server –User Manual Model Number -GF-80000-360Vdc-380Vac-3/3
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1Safety 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 1000 mm to ensure ventilation and heat dissipation of the Energy Server.
•The temperature of the surface of the cabinet may rise when the product is in normal operation.
•Since the battery packs of all series Energy Severs 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 Energy Sever, 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.

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→In locations with unusually high or low temperatures (above 40oC or below 0oC) or high
humidity (90%).
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-80000-360Vdc-380Vac-3/3
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2Energy 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 Mechanical Specifications:

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2.3 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 Sever, where it changes the DC into AC
to feed the load. At the same time, the inverter also changes AC into DC by rectifier and change the
DC into AC to the load as shown in Fig 1.
Fig 1 Composition of Off-grid Photovoltaic System

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2.4 System Architecture of Energy Server:
AC mains power is input via the rectifier switch and is converted to DC power to charge the battery
and power up DC bus. Solar power input is converted by a PV switch through MPPT power module to
supply to the battery and DC bus. The inverter module converts the DC power of DC bus to pure AC
power, free from the mains interference. In the event of mains supply interruption, backup power is
provided to the load by the battery and MPPT module through inverter module. For inverter failure
or overload timeout, loads can be driven by AC bypass through bypass switch and bypass static switch.
In addition, to maintain or service the system, maintenance switch can be manually controlled to
power the load.
Fig 2 System Architecture of Energy Server

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3 Description of Energy Server Control:
3.1 Control Display Panel:
80KW three-phase off-grid Energy Server can control the off-grid inverter and query all the input and
output parameters, battery status, power generation, event and alarm information via operation on
the display panel with touch screen. The display panel can be divided into three parts by functions:
simulation state diagram, LCD display and menu buttons, and control operation buttons.
Fig 3 System Control Panel

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3.1.1 Panel Operation:
The display supports two types of control modes, i.e. button control and touch control. Default
setting is touch screen input mode.
Symbols / icons
/ESC
Function 1
Switch
Page up
Page down
Enter
Function 2
Exit
Move left
Move right
Enter
Table 1 Symbols Representation
Carry out corresponding operations by tapping icons on the LCD screen directly.
Symbols / icons
Function
Press ESC button alternatively in any interface to switch to button control/ touch
screen control mode.
Press Up and Down buttons to move the cursor.
Press the Enter button to execute an operation.
Table 2 Symbols Function
Button symbols
Names
Function
INV ON
Power ON button
INV ON button is used to execute Power On command.
After pressing this button, press the Enter button to
confirm the operation. System will start running.
INV OFF
Power OFF button
INV OFF button is used to execute Power Off command.
After pressing this button, press the Enter button to
confirm the operation. System power will turn Off.
SILENCE ON/OFF
Alarm sound ON/Off
SILENCE ON/OFF button is used to turn ON / Off Energy
Server alarm.
FAULT CLEAR
System faults clear
FAULT CLEAR button is used to clear abnormal
commands and to restart the Energy Server.
EPO
Emergency power
Off
EPO button is used to terminate power supply
immediately.
Table 3 Front Panel Buttons Function

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3.2 Description of Touch Screen:
Fig 4 Description of Touch Screen
Menu Icon
Menu Name
Menu Items
Definition
Input Parameters
Line Voltage(V)
Rectifier input line voltage
Current (A)
Rectifier input current
Frequency (Hz)
Rectifier Input frequency
Power factor
Rectifier Input power factor
Bypass parameters
Phase voltage (V)
Phase voltage
Frequency (HZ)
Frequency
Phase current (A)
Phase current (When the
positive number is displayed,
it is the On-grid generation
current)
Phase Power (KW)
Phase power (When the
positive number is displayed,
it is the On-grid generation
power)

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Output parameters
Phase Voltage(V)
Inverter output phase
voltage
Phase Current (A)
Inverter output phase
current
Frequency (HZ)
Inverter output frequency
Power factor
Load power factor
Load parameters
Apparent Power
(KVA)
S out: Apparent power
Active power (KW)
P out: Active power
Load percentages
(%)
Load (Energy Sever rated
load percentage)
Parallel parameters
Apparent Power
(KVA)
S out: Apparent power
Active power (KW)
P out: Active power
Stand-alone system
with no parallel data
When the Energy Sever is
set to stand-alone, it only
includes its own load
instead of the system load.
Battery parameters
DC BUS voltage (V)
System DC BUS operating
voltage
Battery voltage (V)
System battery Voltage
Battery current (A)
Battery charge and
discharge current
Battery
temperature
Battery pack Ambient
temperature
Environment
temperature(t)
Temperature inside the
Energy Server
Battery Status
Battery pack switch is ON
System Generated
Energy
Generated power
Current total power
generation of the system
Daily Generated
Energy
Daily gross generation of the
system

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Gross Generation
Accumulated gross
generation of the system
MPPT (1- n) modules
parameters
Module version
number
Module software version
number
PV voltage
MPPT n# single module
input PV voltage
PV current
MPPT n# single module
input PV current
Battery Voltage
Battery voltage detected by
the current MPPT Module
Charging Current
Current battery charges
current
Module Status
Current module status
Table 4a Description of Menu Icon of touch screen
Button Icons
Name
Functions
Settings
Press this button to enter system
settings.
ON/OFF
Press this button to execute
ON/OFF command selection, tap
OK to confirm the operation.
Battery pack parameters
Press this button to view the
battery voltage,
charge/discharge current and
battery connection status.
Input parameters of rectifier
Press this button to view the
operating parameters of the
rectifier.
Input parameters of bypass
Press this button to view the
bypass input operating
parameters.
O/P
Output parameters
Press this button to view the
system output operating
parameters.
Battery self-check and
maintenance
Press this button to set battery
test or terminate the test.

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History record button
Press this button to view the
history record of the Energy
Sever system.
Skip button
Press this button to view
another data message in the
same directory.
Return to home page
Press this button to return to the
main system control interface.
Return to the previous menu
Press this button to return to the
previous menu of the directory.
Page down button
Press this button to page down.
Page up button
Press this button to page up.
Left shift button
Press this button to move the
cursor one bit to the left.
Right shift button
Press this button to move the
cursor one bit to the right.
UP/DOWN switch button
Press this button to jump up /
down line between lines.
OK button
Press this button to confirm the
operation.
Delete button
Press this button to delete the
operation.
Table 5 Description of Button Symbol of Touch Screen
3.3 STATUS (System Warning LED) and Warning:
SYS-LED Status
Function Description
Buzzer Status
Red light steady ON
EPO, emergency stop
Long beep
Communication fault
System fault

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Red light flashing once per
second
Battery low voltage
Beep once per second
The delay of bypass overload is
over
Lock overload timeout
Fan fault
Output overload
Red light flashing once per
4 seconds
Other normal alarm
information
Beep once per 4 seconds
Red light flashing once per
2 seconds
Battery test
Beep once per 2 seconds
Green light steady ON.
No fault
No beep
Table 6 System LED and Alarm 1
LED
Red light
steady ON
Green
light
steady ON
OFF
Green light flashing
BYP (bypass
power supply)
Bypass input
fault
System
bypass
supplies
the power.
Bypass
standby
No such condition
PV (MPPT LED)
PV/MPPT fault
Running
normally
MPPT is not
booted.
MPPT module part
power-off / under-
voltage / charge off
REC (Rectifier
LED)
REC input fault
Running
normally
Rectifier
shutdown
Rectifier is starting
INV (Inverter
LED)
INV fault
Inverter
power
Inverter
shutdown
Inverter soft
startup/ stand by

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supply is
normal
BAT (Battery
LED)
Battery under
voltage/fault
Battery
supplies
the power
Normal state
Battery test/ under-
voltage
Table 7 System LED and Alarm 2
3.4 MPPT module panel indicators and alarm warnings:
Fig 5 MPPT Module Panel Indicators and Alarm Warnings
MPPT module LED
indicator
Off
Steady on
Flashing
COMM
Running normally or MPPT not
started
PV reverse
connection
Communication abnormal
RUN
Under-voltage or MPPT not
started
Running normally
PV over-voltage
FAULT
Running normally or MPPT not
started
Power supply
failure or over
temperature
Overcurrent or BUS
overvoltage or capacitor
overvoltage