CPS Series Photovoltaic Grid Connection Inverter


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CPS SCA Series Grid-tied PV Inverter CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480
Installation and Operation Manual - Rev 3.4
CHINT POWER SYSTEMS AMERICA CO.
Revision 3.4 - January 2021

Rev Number
1.0 2.0 2.1 2.2 3.0 3.1
3.2
3.3
3.4

Revision History
Chap/Sec Rev Date Description

N/A 3 3
3, 5, 7, 8
3, 5, 6, 10 3 5 3.3 9.3
2, 3
1 3.3.1 3.3.3.2 6.2.3 2.11 3.3.3.2

Aug 2016 Sep 2016 Feb 2017 Sept 2017 Feb 2018 Mar 2019
Oct 2019
Sept 2020
Jan 2021

Initial Release
H4 Wirebox, Operating Mode
H4 Termination, AC Terminal
AC Terminal, Parameters,
Troubleshooting, Accessories
Increased kVA Ratings
Allow MPPT to be Unbalanced Increased RS485 3pin Terminal LCD interface Parameters Y-Comb Terminal Added Rapid Shutdown Wirebox Removed H4 Wirebox Added water tight design/installation requirements DC Switch Fault Procedure Wiring box bottom gland plate. Factory installed fuse values ISO-NE Protection Settings Add RSD PVRSS Table PV Fuse replacement clarification

Table of Contents

BEFORE YOU START… .............................................................................. 1

1 IMPORTANT SAFETY INSTRUCTIONS............................................... 3

2 OVERVIEW .................................................................................... 9

2.1 INVERTER FOR GRID-TIED PV SYSTEMS................................................. 9

2.2 PRODUCT FEATURES ...................................................................... 10

2.3 PRODUCT PROTECTION AND FUNCTIONS ........................................... 11

2.4

SMART INVERTER FUNCTIONS (DEFAULT STATE): .................................. 12

2.5

APPEARANCE AND MAIN ITEM DESCRIPTION ...................................... 13

2.6

SCHEMATIC DIAGRAM AND CIRCUIT DESIGN....................................... 14

2.7 ANTI-ISLANDING DETECTION........................................................... 16

2.8 DC GROUND FAULT PROTECTION ..................................................... 16

2.9 SURGE SUPPRESSION ..................................................................... 16

2.10 DC ARC-FAULT PROTECTION............................................................ 17

2.11 MODULE-LEVEL RAPID SHUTDOWN.................................................. 17

3 INSTALLATION.............................................................................. 18

3.1

RECOMMENDATIONS BEFORE INSTALLATION ....................................... 20

3.2 MECHANICAL INSTALLATION ............................................................ 23

3.2.1 Dimensions .......................................................................... 23

3.2.2 Installation Method (see Figure 3-2) ................................... 23

3.2.3 Installation Space Requirement........................................... 25

3.2.4 Mounting the Inverter onto the Bracket.............................. 30

3.3 ELECTRICAL INSTALLATION............................................................... 39

3.3.1 Removing/Replacing the Wiring Box Cover:........................ 39

3.3.2 Wiring Boxes........................................................................ 41

3.3.3 DC Connection ..................................................................... 43

3.3.4 AC and Ground Connection..................................................53 3.3.5 AC Connections ....................................................................55 3.4 COMMUNICATION CONNECTION ......................................................60 3.4.1 Description of the Communication Board............................61 3.4.2 RS485 Communication.........................................................61 3.4.3 RS485 Network Set-up .........................................................62 3.4.4 Communication Wiring........................................................64
4 USER INTERFACE...........................................................................65
4.1 DESCRIPTION OF LCD PANEL ...........................................................65 4.2 OPERATION STATE .........................................................................67 4.3 INTERFACE TYPES...........................................................................68
5 COMMISSIONING .........................................................................70
5.1 MECHANICAL INSTALLATION CHECK ...................................................70 5.2 CONDUCTOR CONNECTIONS CHECK...................................................70 5.3 ELECTRICAL CHECK ........................................................................70 5.4 COMMISSIONING STEPS..................................................................71
6 MAIN MENU AND OPERATION......................................................78
6.1 MEASUREMENT DATA ....................................................................78 6.2 SETTING ......................................................................................79
6.2.1 System Parameters ..............................................................81 6.2.2 Control Command................................................................84 6.2.3 Protect Parameters..............................................................87 6.2.4 LVRT/HVRT Parameters........................................................92 6.2.5 Power Derating Setup..........................................................97 6.2.6 Reactive Power Derating Setup ...........................................98 6.2.7 Arc Parameters ..................................................................104 6.2.8 Other Parameters ..............................................................104

6.2.9 File Export (local)............................................................... 108 6.2.10 Firmware Update (local)............................................... 108 6.3 POWER ON/OFF ....................................................................... 108 6.3.1 Manual Power ON/OFF ..................................................... 108 6.3.2 Automatic Turn ON/OFF.................................................... 109 6.4 HISTORY RECORD ........................................................................ 109 6.5 DEVICE INFORMATION.................................................................. 110 6.6 START-UP.................................................................................. 111 6.7 SHUT-DOWN ............................................................................. 112 6.8 OPERATION MODE ...................................................................... 113 6.9 GRID-TIED POWER GENERATION .................................................... 113 6.10 FIRMWARE UPGRADE .................................................................. 114
7 FAULT SHUTDOWN AND TROUBLESHOOTING............................. 116
7.1 LED FAULT AND TROUBLESHOOTING............................................... 116 7.2 LCD FAULT AND TROUBLESHOOTING .............................................. 117
8 MAINTENANCE AND DE-INSTALLATION ...................................... 124
8.1 PRODUCT MAINTENANCE ............................................................. 124 8.1.1 Check Electrical Connections ............................................. 124 8.1.2 Clean the Air Vent Grate.................................................... 125 8.1.3 Replace the Cooling Fans................................................... 125 8.1.4 Replace the Inverter .......................................................... 127
8.2 DE-INSTALLING THE INVERTER........................................................ 130
9 ACCESSORIES ............................................................................. 131
9.1 FUSE BYPASS TERMINALS.............................................................. 131 9.1.1 Bypass Input Terminal Instructions.................................... 131
9.2 SHADE COVER (SSC-60ST) .......................................................... 134 9.2.1 Protection from Harsh Conditions ..................................... 134

9.2.2 Increased Energy Production .............................................134 9.3 Y-COMB TERMINAL BLOCK (OPTIONAL)...........................................135
10 TECHNICAL DATA ........................................................................136
10.1 DATASHEET ................................................................................ 136 10.2 MEASUREMENT TOLERANCES ........................................................138 10.3 PRODUCTION GRAPHS..................................................................139
10.3.1 High Temperature Derating Graph ...............................139 10.3.2 Altitude Derating Graph ...............................................140 10.3.3 Grid Voltage Derating Graph ........................................141 10.3.4 PV Voltage Derating Graph...........................................141 10.3.5 Reactive Power Capability ............................................143
11 LIMITED WARRANTY ..................................................................144

Before You Start…
Scope This Installation and Operation manual contains important information, safety guidelines, detailed planning and setup information for installation, as well as information about configuring, operating and troubleshooting the CPS SCA50KTL-DO/US-480 and CPS SCA60KTL-DO/US-480 3-Phase String Inverters. Here after in this manual this equipment may be referred to simply as the inverters. Be sure to read this manual carefully before operating or servicing the inverters.
Audience The information in Chapters 1 ”Overview”, 4 “User Interface”, 6 “Main Menu and Operation”, 7 “Fault Shutdown and Troubleshooting”, and 9 "Accessories" is intended for the owner and operator of the inverter, and does not require any special training or qualifications. The information in Chapters 0 “Installation”, 5 "Commissioning", 8 “Maintenance and De-installation” is intended for qualified personnel only. Qualified personnel have training, knowledge, and experience in:  Installing electrical equipment and PV power systems (up to 1000VDC).  Applying all local installation codes.  Analyzing and eliminating the hazards involved in performing electrical
work.  Selecting and using Personal Protective Equipment (PPE). Installation, commissioning, troubleshooting, and maintenance of the inverter must be done only by qualified personnel.
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Thank you for choosing a CPS SCA50KTL-DO/US-480 or CPS SCA60KTLDO/US-480 3-Phase String Inverter. These PV Inverters are high performance and highly reliable products specifically designed for the North American Solar market. Instructions inside this user manual will help you solve most installation and operation difficulties. Installation, commissioning, troubleshooting, and maintenance of the inverter must be performed by qualified personnel. If you encounter any problems during installation or operation of this unit, first check the user manual before contacting CPS Customer Service. This user manual is applicable for the following models: CPS SCA50KTL-DO/US-480 and CPS SCA60KTL-DO/US-480 Please keep this user manual on hand for quick reference. The manual will be periodically updated or revised due to the product development or improvement. The latest version of this manual can be acquired via the website at www.chintpowersystems.com.
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1 Important Safety Instructions (SAVE THESE INSTRUCTIONS)
Please read this user manual carefully before installation of the inverter. CPS reserves the right to refuse warranty claims for equipment damage if the user fails to install the product according to the instructions in this manual. Failure to follow these instructions and other relevant safety procedures may result in voiding of the product warranty and/or damage to the inverter or other property. Warnings and symbols in this document
DANGER: DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING: WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury. CAUTION: CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. NOTICE: NOTICE indicates a hazardous situation which, if not avoided, could result in the inverter working abnormally or property loss. INSTRUCTION: INSTRUCTION indicates important supplementary information or provides skills or tips that can be used to help you solve a problem or save you time.
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CPS Series Photovoltaic Grid Connection Inverter