CPS SCA3KTL-O/US Installation And Operation Manual Download

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CPS SCA Series

Grid-Tied PV-Inverter

CPS SCA3/4/5KTL-O/US

Installation and Operation Manual

Version 1.0

Summary of Contents for SCA3KTL-O/US

Page 1: ...CPS SCA Series Grid Tied PV Inverter CPS SCA3 4 5KTL O US Installation and Operation Manual Version 1 0 ...

Page 2: ...4 Communication Interface 25 3 4 4 1 Standard RS 485 Communication 25 3 4 4 2 Optional Ethernet Communication 26 Chapter 4 Commissioning 27 4 1 Start Up 27 4 2 First Time Start Up 27 4 3 Start Up Sequence 31 Chapter 5 User Interface 33 5 1 Normal Operation and Display Menu 33 5 1 1 Status Screens 33 5 1 2 LED Lights 35 5 1 3 Inverter Information and Settings 35 5 1 4 Inverter Information 36 5 1 5 ...

Page 3: ...duct specifically designed for the North American Solar market If you encounter any problems during installation or operation of this unit first check the user manual before contacting your local dealer or supplier This user manual is applicable for the following 3 models CPS SCA3KTL O US CPS SCA4KTL O US and CPS SCA5KTL O US Instructions inside this user manual will help you solve most installati...

Page 4: ...voided 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 equipment working abnormally or property loss INSTRU...

Page 5: ... connected to the earth through the PE protective earthing cable to ensure operational safety DANGER Please disconnect the inverter from AC grid and PV modules before opening the equipment When the PV array is exposed to light it supplies DC voltage to this equipment Make sure hazardous high voltage and energy inside the equipment has been discharged Do not operate or maintain the inverter until a...

Page 6: ...n to the bracket At least 2 people are required for this procedure due to the weight of the inverter NOTICE This inverter is designed to connect AC power only to the public grid Do not connect the AC output of this equipment directly to any private AC power equipment INSTRUCTION Please check with your local electricity supply company before selecting the grid connection standard Putting the invert...

Page 7: ... Electric Utility see Figure 2 1 When a PV panel is exposed to sufficient irradiation sunlight and connected to an inverter it generates DC power The PV Inverter converts DC power to AC power supplied to the Electric Utility via the AC Connection unit The AC power generated is supplied first to local loads Any excess power is supplied to your local Electric Utility The following figure shows the P...

Page 8: ...ed enclosure 2x16 LCD display Single phase 208V L L or 240V L L Compact design High reliability with a standard 10 year warranty Easy operation Maintenance free operation Remote Communications Interface Complies with IEEE1547 2003 IEEE1547 1 2005 Standards Integrated GFDI on PV arrays Integrated series Arc Fault Detection ...

Page 9: ...7 2 3 Dimensions Figure 2 2 Dimensions of CPS SCA3 4 5K O US ...

Page 10: ...Communication Interface Knockout Use this location for inverter communications wiring 3 PV Input Knockouts Two knockouts for cable conduits for PV arrays connection Refer to Installation Section for set up information 4 AC DC Disconnect Switch This switch disconnects connects both Grid and PV from to Inverter Horizontal switch position 0 Disconnect Vertical switch position 1 Connect ...

Page 11: ...iring box terminal cover 5 and 6 AC DC Wiring Box and Terminals AC and DC wiring termination 7 Wiring Box Cover Transparent plastic cover to protect wiring termination area 8 Lower Panel Weather sealed cover for the wiring box ...

Page 12: ...u 11 Up Key Key used to move up the selection list in the display menu 12 Alarm Indicator Red light indicates an alarm that prevents the Inverter from exporting power to Grid 13 Power Indicator Green light indicates the inverter is operating normally and exporting power to Grid 14 LCD 16x2 character LCD display for detailed Inverter PV and Grid condition information ...

Page 13: ...ain items No Item Qty Note 1 Grid tied PV inverter 1 2 Mounting bracket 1 Inverter wall mounting bracket 3 Installation and Operation Manual 1 4 Warranty service card 1 For maintenance and repair 5 Packing list 1 6 Accessory kit 1 Contains all necessary installation accessories The 6 Accessory kit contains items listed below Table 3 2 Accessories No Item Qty Remarks 1 Mounting Screws 8 For mountin...

Page 14: ...ure that the power grid voltage is within normal range Ensure that the local electricity supply authority has granted permission to connect to the grid Installation personnel must be qualified electricians or people who have received professional training Sufficient space is provided to allow the inverter cooling system to operate normally Install the inverter away from flammable and explosive sub...

Page 15: ...Reserve at least 300mm 12 above and 500mm 20 measured start from the bottom of the AC cover below the inverter Each inverter should have a minimum of 300mm 12 space to each other for multiple inverters installation INSTRUCTION The PV Inverter can operate at locations where the ambient temperature is up to 60 C 140 F However for optimal power production it is recommended that inverter is installed ...

Page 16: ...verter mounting dimensions NOTICE Inverter utilizes natural convection cooling for its heat sink Mounting the inverter in a horizontal position or having an obstruction on the top of Inverter will result in overheating ...

Page 17: ...15 Figure 3 2 Mount the inverter correctly ...

Page 18: ...ting bracket can be used as a template Use leveler to make sure the mounting bracket is leveled Drill the 7 marked holes in the wall using 7 32 bit and insert concrete anchors included with Inverter into the wall Mount bracket to the anchors using screws included with Inverter Figure 3 3 Dimensions of CPS SCA3 4 5KTL bracket holes ...

Page 19: ...llustrated in Figure 3 4 Figure 3 4 Mount the inverter on the bracket 5 Secure the inverter to the bracket with M6 screw to hold the bottom of inverter to keep the inverter from vibrating against the wall as shown in Figure 3 5 Figure 3 5 Mounting clamp ...

Page 20: ...ss 2 or Class 3 cable with temperature rating of 194 F or 90 C Wire size is from 12 AWG to 8 AWG 1 Switch off circuit breaker in the main switch box to disconnect utility 2 Cover PV panels to prevent from producing DC energy during installation 3 Put AC DC disconnect switch to 0 position OFF 4 Remove the cover on the lower part of the inverter to access the Wiring Box of Inverter Figure 3 6 Remove...

Page 21: ...PT if the array design requires it For example an array design with 3 input strings that would exceed the Maximum Input Current per MPPT channel may have improved power output if the 3 input strings are combined in a single MPPT See Product Data Sheets for design guidelines and specifications i Connect jumper bar between P48 and P49 on wiring board ...

Page 22: ... i This is the default configuration from factory and most common use of the product Connect jumper bar between P48 and P50 on wiring board Figure 3 9 Dual MPPT configuration 6 Knock out the knockout openings at the bottom of the Wiring Box of Inverter ...

Page 23: ...erter and PV strings or the combiner box 9 Pull cables from the PV side through conduit Use only Class 2 or Class 3 cables Solid wire is not recommended for use with ring lugs and screw terminals in the Inverter Put ring lugs at the end of cables before connecting them to terminal block on the inverter side 10 From each PV string connect the Positive DC cable to terminal label and Negative DC cabl...

Page 24: ...22 Figure 3 11 Internal layout of Wiring Box 11 Tighten terminal screws with 15 in lbs 1 7N m of torque Check that all terminals and cables are secured ...

Page 25: ...igure 3 12 Knockout for conduits 4 Install in cable conduit between Inverter and the main switch box 5 Use only Class 2 or Class 3 cables Solid wire is not recommended for use with screw terminals in the Inverter Put ring lugs at the end of cables before connecting them to terminal block on the inverter side 6 For 208V and 240V main a Connect L1 to terminal with label LINE 1 b Connect L2 to termin...

Page 26: ...es exist between terminals of PV panels when Panel is exposed to sufficient irradiation Exposed terminals of the PV Panel can cause electric shock Avoid making physical contact with those parts of the device NOTICE Before connecting PV Panels to DC terminals make sure the polarity of each connection is correct An incorrect connection could permanently damage the device NOTICE Perform an AC power q...

Page 27: ...uidance is outside the scope of this document 3 4 4 Communication Interface 3 4 4 1 Standard RS 485 Communication The inverter has integrated RS 485 communications capability The RS 485 connections are made in the wiring box as shown in Figure 3 13 Figure 3 13 Internal communication structure 1 RS 485 communication pin also called RS 485 A 2 RS 485 communication pin also called RS 485 B 3 RS 485 C...

Page 28: ...onal Ethernet Communication Optional Ethernet Communication board can be installed in the field if such option is purchased by the customer The optional board assembly can be installed as shown in Figure 3 15 Figure 3 15 Mounting of communication option board assembly ...

Page 29: ...During first time start up the inverter will prompt installers to choose various setting options to match grid conditions and to configure inverter s communication options The installer can go back to the configuration screens by pressing all three keys Up Down and Enter at the same time for 5 seconds After holding these keys for 5 seconds the inverter will stop exporting power to the grid and all...

Page 30: ...ETUP 6 PASSWORD scroll Figure 4 1 First time start up sequence 1 Choose Nominal Grid voltage There are three nominal Grid voltage settings that installers can choose from Scroll through the options using Up and Down buttons and be selected with ENTER button a IEEE 1547 208 208V Line to Line 60Hz b IEEE 1547 240 240V Line to Line 60Hz ENTER TO ACCEPT IEEE1547 208V ENTER TO ACCEPT IEEE1547 240V ENTE...

Page 31: ...ion Baud rate to match the rate of the device gateway that connects to inverter The default Baud rate is 9600 1 Press Up and Down key to change number for each digit 2 Press Enter key to accept the value for each digit The display will automatically jump to the next digit for entry 3 After the last digit Enter key will move to the next setting item ENTER TO ACCEPT 485bps xxxx ENTER TO SETUP 3 485B...

Page 32: ...n phase with voltage This is default setting Leading PF Current is leading voltage in phase This is also called over excited condition or capacitive Lagging PF Current is lagging voltage in phase This is also called under excited condition or inductive Press the Up and Down key to change value of Power Factor Press the Enter key to accept Power Factor setting 6 Set LCD Interface Password ENTER TO ...

Page 33: ...ion will send the display to Information Screens 4 3 Start Up Sequence The inverter will go through a sequence of safety checks before it starts exporting power It takes the inverter about 5 minutes to go through the whole Start Up Sequence SELFTEST 5 0KW Figure 4 9 Inverter self test The following are Self Check items that the inverter goes through 1 Check Ground Fault operation of internal circu...

Page 34: ... the disconnecting relays between Inverter and Grid If any of these tests fails the inverter will display a fault message about the failure and will not connect to grid If all Self Test items pass the inverter will connect and export power to Grid ...

Page 35: ...information The Up and Down keys can be used to go to specific information After 2 minutes the display will resume scrolling Etoday 12345kWh Power 1234W Etotal 12345kWh Runtime 2345h Vgrid 240V Igrid 14 5A Vpv1 434 5V Ipv1 15 5A Vpv2 400 0V Ipv2 20 0A Freq 60 00Hz Pfactor 1 000 scroll Status Screens UP DOWN TO CHANGE Figure 5 1 Inverter status screens NOTE LCD display will switch off after 2 minut...

Page 36: ...MPPT channel 1 Ipv1 Average DC Current of PV array connecting to MPPT channel 1 Vpv2 DC Voltage of PV array connecting to MPPT channel 2 Ipv2 Average DC Current of PV array connecting to MPPT channel 2 Freq Grid Frequency PF Setting Inverter Power Factor setting If there is an alarm the LCD will display the alarm information The user can use the Up and Down buttons to scroll through the alarm list...

Page 37: ...ts the inverter from exporting power These alarms could be see Section 8 about display messages o Detection of Ground Fault current o Detection of series Arc Fault o Low resistance from PV terminals to Earth Ground o Grid voltage or frequency out of range o Loss of PV array sources o Overheating 5 1 3 Inverter Information and Settings The user can view information about the inverter and change the...

Page 38: ...ation includes 1 Inverter model rating 2 Inverter hardware revision 3 Inverter firmware revision 4 Inverter serial number 5 Inverter Grid voltage and frequency configuration 6 Inverter communication address 7 Inverter communication Baud rate INSTRUCTION Setting levels cannot be changed in this menu level User can make change by going to First Time Start Up Setting see Section 4 2 by pressing all t...

Page 39: ...r 1 INFORMATION 7 485Bps 9600 Ent Esc Normal Operation 1 INFORMATION UP DOWN TO CHANGE Figure 5 4 Inverter information 5 1 5 Inverter Settings In this Menu the user can make changes to the display contrast of the LCD screen and display language ENTER TO SETUP 2 LANGUAGE ENG ENTER TO SETUP 1 CONTRAST scroll Ent Esc Normal Operation 2 SETTINGS Figure 5 5 Inverter settings ...

Page 40: ...hange to contrast of LCD screen 3 Use Enter key to accept the change 4 Use ESC key combination to go back ENTER TO SETUP 1 CONTRAST 5 Levels of contrast 1 5 Ent Esc ENTER TO ACCEPT CONTRAST 3 or Ent Figure 5 6 Contrast settings Language There are two languages English and German from which user can select as the display menu language ENTER TO SETUP 2 LANGUAGE ENG Ent Esc or Ent ENTER TO ACCEPT LAN...

Page 41: ...p PV1V Voltage of PV array number 1 PV1 I Current of PV array number 1 PV2 V Voltage of PV array number 2 PV2 I Current of PV array number 2 Freq xx xx Hz Grid frequency in Hertz PF setting Setting of Power Factor for exporting current System Fault Explanation PV IMPEDANCE LOW Resistance from either PV inputs to Earth Ground is lower than 600 kOhm ISOLATION FAULT Disconnecting relays between Inver...

Page 42: ...de of operating range PV VOLTAGE HIGH PV array voltage is higher than PV operating range PV VOLTAGE LOW PV array voltage is lower than PV operating range OVER TEMP The internal temperature is higher than normal value EEPROM FAULT EEPROM cannot be written ...

Page 43: ...o Earth Ground is low PV arrays may need cleaning or drying Inverter will continually test impedance again during Start up Sequence in case low impedance caused by moisture on PV panel and moisture will dry up later in the day Check any short from PV terminals to Earth Ground ISOLATION FAULT Disconnecting relays between Inverter and Grid do not work properly Need to recycle power to Inverter Inver...

Page 44: ...ck circuit breaker of circuit connecting to Inverter Check configuration to see if it matches Grid nominal voltage Inverter will automatically reconnect to Grid when Grid voltage and frequency is within operating range Refer to Specification section of manual PV VOLTAGE HIGH PV array voltage is higher than PV operating range Check voltage of PV arrays Inverter will automatically reconnect to Grid ...

Page 45: ...free the following regular inspections would help to ensure the PV Inverter operation at optimal performance level 1 Clean any debris that may settle on heat sink on the back of the unit 2 Inspect Grid connection and PV connection Re torque terminal screws 3 Check the inverter and cables for any signs of external damage Contact your local service immediately if you find any defects Do not carry ou...

Page 46: ...nput Pairs 2x2 2x2 2x2 MPPT Voltage Range 200 470Vdc Max Input Current Imp 16A 21A 26A Max Input Current per String 13A 13A 13A Max Short Circuit Current Isc 25 6A 12 8A MPPT 33 6A 16 8A MPPT 41 6A 20 8A MPPT DC Disconnection Type Load rated DC switch AC Output Nominal AC Power 208Vac 2 85kW 3 8kW 4 6kW Nominal AC Power 240Vac 3kW 4kW 5kW Max AC Power 208Vac 2 85kW 3 8kW 4 6kW Max AC Power 240Vac ...

Page 47: ... CEC Efficiency 96 5 97 Stand by Night Consumption 8W 1W Environment Protection Degree NEMA 3R Cooling Natural convection Operating Temperature Range 13 F to 140 F 25 C to 60 C derating from 113 F 45 C Operating Humidity 0 95 non condensing Operating Altitude 6262ft 2000m without derating Display and Communication Display LCD LED Communication RS485 Modbus Ethernet Zigbee optional Mechanical Data ...

Page 48: ...he inverter must not be disposed of with the household waste Dispose of the PV Inverter at the end of its service life should be done in accordance with the disposal regulations for electronic waste which apply at the installation site at that time 8 2 Contact Information Should you have technical problems concerning this product please contact our Service line We require the following information...

Page 49: ...AI CHINT POWER SYSTEMS CO LTD Headquarters Building 4 No 3255 Sixian Road Songjiang District Shanghai China Tele 86 21 3779 1222 6300 Fax 86 21 3779 1222 6001 Website www chintpower com na Part No 9 0020 0097A0 This manual is subject to change without prior notification Copyright is reserved Duplication of any part of this issue is prohibited without written permission ...

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