Sungrow SG100KU User manual

SG100KU
PV Grid-Connected Inverter
Installation Manual
SG100KU-IEN-Ver13-201308 Version：1.3

I
About This Manual
Thank you for purchasing the SG100KU from Sungrow Power Supply Co., Ltd.. We
hope that the device will meet with your satisfaction when you use it with your PV
plant system.
Aim
The aim of this manual is to give safety instructions, detailed setup information for the
installation of SG100KU PV grid-connected Inverter.
Target Readers
The manual is provided to people who need to set up a system that includes the
SG100KU grid connected inverter. Installers must be qualified electricians only.
How to Use This Manual
Read this manual and the other documents, before installation of the SG100KU.
The document must be stored near the installation and must be available at all times.
The contents of this manual will be periodically updated or revised if necessary.
However discrepancies cannot be excluded. Please make the object as the standard
or download the latest version of this manual via www.sungrowpower.com.

II
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
Symbols Explanation
Important instructions contained in this manual should be followed during installation
of the inverter. And they will be indicated by these symbols.
DANGER indicates a hazard with a high level of risk which, if not avoided, will
result in death or serious injury.
WARNING indicates a hazard with a medium level of risk which, if not avoided,
could result in death or serious injury.
CAUTION indicates a hazard with a low level of risk which, if not avoided, could
result in minor or moderate injury.
NOTICE indicates a situation which, if not avoided, could result in equipment
abnormal or property damage.
NOTE indicates additional information, emphasized contents or tips to help you solve
problems or save time.

III
Contents
1 Safety Instructions ................................................................................................. 1
1.1 Appropriate Usage ............................................................................................................................ 2
1.2 Safety Instructions ............................................................................................................................ 3
1.3 Emergency Stop Button .................................................................................................................... 5
1.4 Grid (AC) Main Switch ...................................................................................................................... 6
1.5 DC Main Switch ................................................................................................................................ 6
1.6 Open the Door of SG100KU............................................................................................................. 6
2 Delivery .................................................................................................................... 7
2.1 Scope of Delivery.............................................................................................................................. 8
2.2 Identify SG100KU ............................................................................................................................. 9
2.3 Storage of SG100KU ...................................................................................................................... 10
3 Introduction........................................................................................................... 11
3.1 Basic Structure and Appearance .................................................................................................... 12
3.2 Dimensions and Weight.................................................................................................................. 14
3.3 The Bottom and Top Views............................................................................................................. 15
3.4 Electrical Connections Interface ..................................................................................................... 16
3.5 Data Acquisition .............................................................................................................................. 17
3.5.1 Data Display ........................................................................................................................... 17
3.5.2 Fault Indication ....................................................................................................................... 17
3.5.3 Serial Data Access ................................................................................................................. 17
3.6 General Requirements.................................................................................................................... 17
3.6.1 Grid Requirements ................................................................................................................. 17
3.6.2 Ventilation Requirements .......................................................................................................17
3.6.3 Installation Requirements....................................................................................................... 17
3.6.4 Personnel Requirements........................................................................................................ 18
3.6.5 Communication Requirements............................................................................................... 18
4 Installation Design............................................................................................... 19
4.1 The Solution with Optional Devices from SUNGROW ................................................................... 20
4.2 Basic Requirements........................................................................................................................ 21

IV
4.3 Installation Environment Design ..................................................................................................... 21
4.3.1 Floor ....................................................................................................................................... 21
4.3.2 Clarence Space ...................................................................................................................... 22
4.3.3 Cable Trench .......................................................................................................................... 22
4.3.4 Ventilation............................................................................................................................... 23
4.3.5 Other Protections ................................................................................................................... 23
4.4 Wiring Specification ........................................................................................................................ 24
4.5 Tightening Torques and Cable Protection....................................................................................... 25
4.5.1 Tightening Torques for Power Cable Connections................................................................. 25
4.5.2 Cable Protections ................................................................................................................... 25
4.6 Installation Process......................................................................................................................... 25
5 Preparations for Installation .............................................................................. 27
5.1 Checking the Unit ........................................................................................................................... 28
5.2 Required tools................................................................................................................................. 28
6 Mechanical Installation....................................................................................... 29
6.1 Transport and Shipping................................................................................................................... 30
6.1.1 Attentions................................................................................................................................ 30
6.1.2 Moving the Packed SG100KU ............................................................................................... 31
6.2 Field Installation.............................................................................................................................. 35
6.2.1 Unpacking the Unit ................................................................................................................. 35
6.2.2 Place the SG100KU ............................................................................................................... 36
6.2.3 Fastening the SG100KU to the floor ...................................................................................... 36
7 Electrical Connection ........................................................................................... 37
7.1 Cable Specifications ....................................................................................................................... 38
7.2 Parts for Cabling ............................................................................................................................. 39
7.3 Start Electrical Connections............................................................................................................ 40
7.3.1 Open the Door........................................................................................................................ 40
7.4 Open the Cable Entry/Exit Holes.................................................................................................... 41
7.5 DC Connections.............................................................................................................................. 42
7.6 AC Grid Connections ...................................................................................................................... 44
7.7 Ground Connections....................................................................................................................... 45
7.8 Communication Connection (Optional)........................................................................................... 47
7.9 Close the Cable Entry/Exit Holes ................................................................................................... 48
8 Installation Checklist........................................................................................... 49
9 Commissioning..................................................................................................... 51
9.1 Requirements of Commissioning.................................................................................................... 52
9.2 Inspection before Start-up............................................................................................................... 52

V
9.2.1 PV Array Check ...................................................................................................................... 52
9.2.2 SG100KU Check .................................................................................................................... 52
9.2.3 Ground Connection Check..................................................................................................... 52
9.2.4 Serial Communication Check (Optional) ................................................................................ 53
9.2.5 Voltages Check ...................................................................................................................... 53
9.3 Start the Inverter ............................................................................................................................. 53
9.4 Complete the Commissioning......................................................................................................... 54
10 Appendix.............................................................................................................. 55
10.1 Technical Data............................................................................................................................... 56
10.1.1 DC Parameters..................................................................................................................... 56
10.1.2 AC Parameters ..................................................................................................................... 56
10.1.3 Mechanical Parameters........................................................................................................ 57
10.1.4 System.................................................................................................................................. 57
10.1.5 Display and Communication................................................................................................. 57
10.2 Exclusion of Liability...................................................................................................................... 58
10.3 About Us........................................................................................................................................ 59

VI
Figures
Fig 1-1 PV Generation System with SG100KU ................................................................................................. 2
Fig 2-1 Nameplate ............................................................................................................................................. 9
Fig 3-1 Simple Circuit Diagram of SG100KU .................................................................................................. 12
Fig 3-2 External Appearance of SG100KU...................................................................................................... 13
Fig 3-3 Dimensions and Weight of SG100KU ................................................................................................. 14
Fig 3-4 Bottom View of SG100KU ................................................................................................................... 15
Fig 3-5 Top View of SG100KU......................................................................................................................... 15
Fig 3-6 Electrical Connections Interfaces of SG100KU................................................................................... 16
Fig 4-1 The Solution from SUNGROW............................................................................................................ 20
Fig 4-2 Clearance Space around the SG100KU ............................................................................................. 22
Fig 4-3 Sectional Drawing of Cable Trench..................................................................................................... 23
Fig 4-4 Installation Process of the SG100KU.................................................................................................. 26
Fig 6-1 Moving the Packed SG100KU............................................................................................................. 32
Fig 6-2 Using a Forklift to Move the SG100KU with the Wooden Pallet ......................................................... 33
Fig 6-3 Using a Forklift to Move the SG100KU ............................................................................................... 33
Fig 6-4 Using Rail Steels or Crane to Move the SG100KU............................................................................. 34
Fig 6-5 Cross-section View of the SG100KU Fasten on the Wooden Pallet................................................... 35
Fig 6-6 Fastening the SG100KU ..................................................................................................................... 36
Fig 7-1 Power Cable Connection Terminal ...................................................................................................... 39
Fig 7-2 Open the Main Switches ..................................................................................................................... 40
Fig 7-3 Open the Latch.................................................................................................................................... 40
Fig 7-4 Remove the Protective Shield ............................................................................................................. 41
Fig 7-5 DC Input Cable Routing ...................................................................................................................... 43
Fig 7-6 AC Output Cable Routing .................................................................................................................... 44

VII
Fig 7-7 Ground Cable Routing......................................................................................................................... 46
Fig 7-8 Serial Communication Cable Routing ................................................................................................. 47
Fig 7-9 Serial Communication Interface Connection....................................................................................... 47

VIII
Tables
Table 1-1 System Devices Type ........................................................................................................................ 2
Table 2-1 Scope of Delivery............................................................................................................................... 8
Table 4-1 Min. Distances between Control Cable and Power Cable............................................................... 24
Table 4-2 Tightening Torques for Power Cable Connections .......................................................................... 25
Table 4-3 Installation Process Descriptions..................................................................................................... 26
Table 6-1 Symbol and Data Name on Crate.................................................................................................... 31
Table 7-1 DC Cables Recommended Sizes .................................................................................................... 38
Table 7-2 AC Cables Recommended Sizes .................................................................................................... 38
Table 7-3 Ground Cables Recommended Sizes ............................................................................................. 38
Table 7-4 Communication Cables Recommended Sizes ................................................................................ 39

1
1 Safety Instructions
About This Chapter
This chapter describes the appropriate usage and provides some important safety
instructions about SG100KU.

SG100KU Installation Manual
2
1.1 Appropriate Usage
Grid-Connected PV system consists of PV modules, grid-connected inverters,
metering device and power distribution system (as shown in Fig 1-1).
The solar energy is converted into DC current by PV modules and is fed into the local
power grid network by the grid-connected inverter which synchronized the frequency,
phase and pure sine waveform with the power network.
Fig 1-1 PV Generation System with SG100KU
No. Description
A PV Arrays
B SG100KU PV Grid-Connected Inverter
C Utility Grid
Table 1-1 System Devices Type
Device Type
PV Arrays Monocrystalline Silicon, Polycrystalline Silicon, Amorphous Silicon,
Thin Film Cells
Utility Grid TT, TN-C, TN-S, TN-C-S, IT
Optional Devices SolarInfo EM Environment Monitoring Device
SunBox PVS PV Array Combiner Box
SunBox PMD-D DC Power Distribution Cabinet
SunBox PMD-A AC Power Distribution Cabinet
SolarInfo Logger Inverter Data Acquisition and Transmission
Device

Safety Instructions 1
3
1.2 Safety Instructions
Pay attention to the following safety instructions:
Shock Hazard!
Death results from burning and electric shock upon touching the SG100KU live
components.
zDo not touch the live components of the SG100KU.
zObserve all safety regulations.
Shock Hazard!
The enclosure of SG100KU inverter may contain high voltage conductors. The
enclosure doors should be kept locked during operation, except for
maintenance or testing.
To avoid the risk of electric shock, do not perform any action or operation which
is not included in the operating instructions unless you are qualified to do so.
Shock Hazard!
The SG100KU inverter will immediately shutdown if users want to open the front
door during operation.
Please check the unit is thoroughly shut down and isolated from the public grid
and PV arrays before opening the front door.
To avoid the risk of electric shock, a minimum 15 minutes is needed for any
stored potentials that still left in the inverter after shut-down to be discharged
before opening the door.

SG100KU Installation Manual
4
Lethal Voltage!
Damage to the SG100KU may result death by electric shock or fire!
zOnly operate SG100KU when it is safe to do so!
zOnly operate SG100KU when no damage is visibly apparent!
DC Voltage!
The PV array will provide DC voltage to the inverter when exposed to light,
which may cause an electrical shock during installation, wiring or maintenance
if not covered.
Limitation of Use!
The SG100KU Photovoltaic Grid-Connect Inverter is not intended for use in
connection with life support systems or other medical equipments or devices.
zDo not install on or over combustible surfaces.
zMore than one live circuit,see diagram.
For use in a controlled environment. refer to manal for environmental
conditions,

Safety Instructions 1
5
ESD Protection!
The SG100KU may be damaged irreversibly by electrostatic discharge (ESD) at
its components.
zDuring the operation of SG100KU, please observe all the ESD related safety
regulations!
zDischarge any ESD by touching the grounded SG100KU conductor before
contacting any electronic components!
Service Safety!
Thoroughly inspect the equipment prior to energizing. Verify that no tools or
equipment have inadvertently been left behind.
Never work alone when servicing this equipment. Two persons are required
until the equipment is properly de-energized, locked out and verified
de-energized with a meter.
Please keep this installation the manual and other related documents in the handy
place of the SG100KU.
These documents must be available to operators and maintenance personnel at all
times.
1.3 Emergency Stop Button
The Emergency stop button will shutdown the inverter (disconnects the AC contactor
and stops the IGBT matrix) immediately when it is punched (pressed down).

SG100KU Installation Manual
6
The inverter must be started up manually through LCD control menu if users want to
recover the operation after the button is punched.
1.4 Grid (AC) Main Switch
The grid main switch is one of the primary disconnects for the inverter. The inverter's
doors cannot be opened until the switch of the grid main switch is in the OFF position.
When the AC main switch is in the OFF position, all AC power is disconnected (not
live), except the following areas:
zThe input side of the AC circuit breaker (the utility grid)
zThe DC input terminals (if the PV array is connected and energized)
To operate the inverter the AC circuit breaker switch must be in the ON position.
1.5 DC Main Switch
The DC main switch is also the primary disconnect for the inverter. The inverter's
doors cannot be opened until the switch of the DC circuit is in the OFF position.
When the DC main switch is in the OFF position, all DC power is disconnected (not
live), except the following areas:
zThe input side of the AC main switch (the utility grid)
zThe DC input terminals (if the PV array is connected and energized)
To operate the inverter the DC circuit breaker switch must be in the ON position.
1.6 Open the Door of SG100KU
Use the following procedure to shut down the SG100KU inverter before servicing:
1. Stop the inverter from the LCD control menu.
2. Switch off the AC main switch (turn the switch to OFF position)
3. Switch off the DC main switch (turn the switch to OFF position).
4. Press in the handle to make it pop out from the lock hole, turn it right.
5. Now you can open the front door.

7
2 Delivery
About This Chapter
This chapter provides the scope of delivery of SG100KU, nameplate and storage
method.

SG100KU Installation Manual
8
2.1 Scope of Delivery
The following materials in Table 2-1 should be included in the crate.
Table 2-1 Scope of Delivery
No. Name Note
1 SG100KU PV Grid-Connected Inverter Including key and parts for cabling
2 SG100KU Installation Manual -
3 SG100KU Operation Manual -
4 Warranty Card -
5 Certificate of Quality -
6 Product Test Report -
User can download the latest version of this manual and the monitoring software via
www.sungrowpower.com.

Delivery 2
9
2.2 Identify SG100KU
You can identify the SG100KU using the nameplate. There are two nameplates
located on the back panel and inside the door as shown in Fig 2-1.
Fig 2-1 Nameplate
*The picture is for reference only; the actual item is standard.
No. Description
A SUNGROW Logo and product type
B Parameters
C Marks of certification institutions of SG100KU
D Company name, website and origin

SG100KU Installation Manual
10
2.3 Storage of SG100KU
If there is a long time before installation or operation, SG100KU should be deposited
appropriately.
zPack SG100KU up in the crate.
zKeep the desiccant bags in the crate.
zSG100KU can only be stored when it is stopped and all the doors are closed in a
dry room to protect the internal circuits against dust and moisture.
zRoutine check at least once a week.
zUnpacking check and change desiccant bags every 6 months.
Keep the crate upright.
No stacking on top of the crate.
After long term storage, a thorough test of SG100KU is necessary.