CPS SCA50KTL-DO/US-480 Installation And Operation Manual
  1. Manuals
  2. Brands
  3. CPS Manuals
  4. Inverter
  5. SCA50KTL-DO/US-480
  6. Installation and operation manual

CPS SCA50KTL-DO/US-480 Installation And Operation Manual

Sca series grid-tied pv inverter
Hide thumbs Also See for SCA50KTL-DO/US-480:
Table of Contents

Advertisement

Quick Links

CPS SCA Series Grid-tied PV Inverter
CPS SCA50KTL-DO/US-480
and SCA60KTL-DO/US-480
Installation and Operation Manual - Rev 3.0
CHINT POWER SYSTEMS AMERICA CO.
Revision 3.0 - Feb 2018

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the SCA50KTL-DO/US-480 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for CPS SCA50KTL-DO/US-480

Summary of Contents for CPS SCA50KTL-DO/US-480

  • Page 1 CPS SCA Series Grid-tied PV Inverter CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 Installation and Operation Manual - Rev 3.0 CHINT POWER SYSTEMS AMERICA CO. Revision 3.0 - Feb 2018...

  • Page 3: Revision History

    Revision History Rev Number Chap/Sec Rev Date Description Aug 2016 Initial Release Sep 2016 H4 Wirebox, Operating Mode Feb 2017 H4 Termination, AC Terminal 3, 5, 7, 8 Sept 2017 AC Terminal, Parameters, Trouble-Shooting, Accessories 3, 5, 6, 10 Feb 2018 Increased kVA Ratings...

  • Page 4: Table Of Contents

    Table of Contents Before You Start… .................. 1 1. IMPORTANT SAFETY INSTRUCTIONS ..........3 2. Overview .................... 6 2.1. Inverter for grid-tied PV systems 2.2. Product Features 2.3. Product Protection Functions 2.4. Appearance and Main Item Description 2.5. Schematic Diagram and Circuit Design 2.6.

  • Page 5: Table Of Contents

    Operation ..................109 6.1 Start-Up 6.2 Shut-Down 6.3 Operation Mode 6.4 Grid-tied Power Generation 6.5 Firmware Upgrade Maintenance and De-installation ............ 113 7.1 Product Maintenance 7.1.1 Check Electrical Connections ......113 7.1.2 Clean the Air Vent Grate ........ 113 7.1.3 Replace the Cooling Fans ......114 7.1.4 Replace the Inverter ........

  • Page 7: Before You Start

    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.
  • Page 8 Thank you for choosing a CPS 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.

  • Page 9: Important Safety Instructions

    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.
  • Page 10 Markings on the product HIGH VOLTAGE: This inverter operates with high voltages. All work on the inverter must only be performed as described in this document. HOT SURFACE: The inverter is designed to meet international safety standards, but surfaces can become hot during operation. Do not touch the heat sink or peripheral surfaces during or shortly after operation.
  • Page 11 The inverters are to be installed with floating or ungrounded PV arrays only. CAUTION: CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters weigh approximately 56kg (123.5 pounds). The wirebox portion weighs approximately 15kg (33 pounds). Ensure the mounting bracket is properly installed before hanging the inverter and wirebox on the bracket.

  • Page 12: Inverter For Grid-Tied Pv Systems

    2. Overview 2.1. Inverter for grid-tied PV systems CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 3-Phase Transformerless String Inverters are designed for use with an ungrounded array in carport, commercial rooftop, and large utility scale PV grid-tied systems. The system is generally made up of PV modules, a 3-Phase String...

  • Page 13: Product Features

    Reactive Power; >0.99 PF (±0.8 adjustable), Full Active Power rating to +/-0.91 PF, and optional local or remote Active Power Curtailment.  Flexible communication: Supports standard CPS Modbus RS485, SunSpec Modbus, and HTTPS/XML communications to ensure compatibility with 3 party monitoring and control systems.

  • Page 14: Product Protection Functions

    2.3. Product Protection Functions  Reverse polarity protection of DC input  AC and DC Short circuit protection  Arc-fault detection and circuit interruption  Anti-islanding detection with bi-directional frequency perturbation  DC Input and AC output over-voltage protection  DC Input over-current protection ...

  • Page 15: Appearance And Main Item Description

    2.4. Appearance and Main Item Description 5 6 7 Figure 2-3 Diagram of the Inverter assembly Main items of the Inverter: ① Main inverter enclosure ⑥ User LCD display ② Inverter wirebox ⑦ User Key buttons ③ Inverter mounting bracket ⑧...

  • Page 16: Schematic Diagram And Circuit Design

    2.5. Schematic Diagram and Circuit Design The basic electrical schematic diagram of CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters are shown in Figure 2-2. The input from PV source circuits passes through surge protection circuitry, DC EMI wave filters, and independent DC-DC boost circuitry to achieve maximum power point tracking and boost the voltages to a common DC bus.

  • Page 17: Anti-Islanding Detection

    2.6. Anti-islanding Detection The SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters include Unintentional Islanding detection as required by UL 1741/IEEE 1547. The inverter will continuously make bi-directional perturbations to the frequency of the output current by injecting a small amount of reactive power to detect a possible islanding condition.
  • Page 18 3. Installation This chapter describes the planning and installation procedures for the SCA50KTL-DO/US-480 and SCA 60KTL-DO/US-480 inverters. Please read carefully and install the products following the step-by-step instructions. The inverter and other main items are shipped in two separate packages, consisting of A.) the main inverter enclosure and B.) the wirebox, mounting...
  • Page 19 Note that the items in the Accessory Kits vary between the Standard wirebox and H4 wirebox, the items listed below: Table 3-2 Accessory Kit (Standard wirebox) Q’ty Item Note For attaching the mounting bracket to M8 Expansion Anchors a concrete wall or surface M8×25mm machine bolts with integrated Used with M8 expansion anchors...
  • Page 20 Table 3-3 Accessory Kit (H4 wirebox) Q’ty Item Note For attaching the mounting bracket to M8 Expansion Anchors concrete wall or surface M8×25mm machine bolts with integrated Used with M8 expansion anchors lock washer 4 for securing the wiring box to the M6 X18mm Phillips main enclosure;...

  • Page 21: Recommendations Before Installation

    10, Technical Data for specification ranges and limits. NOTICE: The allowable ambient temperature range for the SCA50KTL-DO/US-480 and SCA 60KTL-DO/US-480 inverters is defined based on the following conditions; Condition 1: -40°C to 70°C, Inverter not installed, and in storage (in packaging or unpackaged).
  • Page 22 Without inspection, customers will run the risk of having inverter electronic circuit damage when power is applied to inverter during startup. It is advised that customers contact CPS for further advice and to arrange schedule for CPS service personnel to perform inspection of inverter on site.

  • Page 23: Mechanical Installation

    (b) If the inverter cannot be mounted vertically, it may be tilted backward at any angle from vertical to horizontal. (c) When tilted backward at ≤75° from horizontal in an outdoor environment, the CPS Shade Cover (SSC-60ST) accessory is required to be installed. See Section 9.2 for more information.
  • Page 24 NOT UPSIDE DOWN Figure 3-2 Inverter Mounting Options NOTICE: When the inverter is mounted tilted backward at ≤75° from horizontal in an outdoor environment, the CPS Shade Cover (SSC-60ST) accessory must be installed on the inverter to avoid direct sunlight.
  • Page 25 3.2.3. Installation Space Requirement The distances between the inverters or the surrounding objects should meet the following conditions: NOTICE: The spacing between two adjacently mounted inverters must be ≥19.7in (500mm). Spacing should be enlarged for installation locations with ambient temperature higher than 45°C. Ensure that the air space around the inverter is well ventilated.
  • Page 26 300mm (11.8in.) BAFFLE 300mm 500mm (11.8in.) (19.7in.) BAFFLE MUST: =600mm 1. EXTEND MIN. ABOVE AND BELOW FANS 2. EXTEND 4" MIN. PAST FRONT OF INVERTER (23.6in.) 3. LOCATED 8" MIN. FROM BOTH INVERTERS Figure 3-3 Inverter Wall Mounting Dimensions INSTRUCTION: If the inverter is installed on Unistrut or the array racking (instead of solid wall), the space from the bottom of one inverter to the top of the inverter below may be as small as 3.9in (100mm).
  • Page 27 8in. 12in. 12in. 12in. Figure 3-4 Inverter Pillar or Column Mounting Dimensions INSTRUCTION: If the inverter is installed on a pillar or column (instead of solid wall), the space from the bottom of one inverter to the top of the inverter below may be as small as 12in (300mm).
  • Page 28 12" 12" 14" WALL OR PASSIVE CABINET BAFFLE MUST: 1. EXTEND MIN. ABOVE AND BELOW FANS 2. EXTEND 4" MIN. PAST FRONT OF INVERTER 3. LOCATED 7" MIN. FROM BOTH INVERTERS...
  • Page 29 3.2.4. Mounting the Inverter onto the Bracket 1. Locate and mark the 8 holes on the wall, PV racking structure, or bearing surface for attaching the inverter mounting bracket as shown in Figure 3-5. 350mm 250mm 250mm ≥ (13.8in.) (9.84in.) (9.84in.) 8-? 10.0 1100mm(min.)
  • Page 30 Concrete Wall Mount: Drill holes at the marked positions with a 0.4in. (10mm) masonry bit and insert the M8 Expansion Anchors ① into the holes; Fasten the Mounting Bracket ② with the M8x25 Assembling Bolts ③ supplied with the Accessory Kit. Figure 3-6 Figure 3-7.
  • Page 31 3-9, and mount it onto the bracket. CAUTION: The main enclosure of the CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters is approx 56kg (123.5 pounds). Ensure the mounting bracket is properly installed and secured before hanging the inverter on the bracket. It is recommended to have at least 2 people to mount the inverter due to the weight of the equipment.
  • Page 32 Figure 3-9 Grab Handle Position Install the wiring box Remove the cover plate at the bottom of the main enclosure. Tool required: No.2 Phillips head screwdriver Figure 3-10 Main Enclosure Cover Plate...
  • Page 33 Remove screws securing the bulkhead cover at the top of the wiring box. Figure 3-11 Wiring Bulkhead Cover Save the bulkhead cover and screws, and attached the cover to the left side of the wiring box after the wiring box is attached to the inverter enclosure.
  • Page 34 Figure 3-12 Installation of the Wiring Box Attach the main enclosure and the wiring box to the mounting bracket with the M6x18 screws (6 pcs). (see Figure 3-13) Tool required: No.3 Phillips head screwdriver, torque value of 4N.m (35.4in-lbs) Figure 3-13 Secure the Main Enclosure and Wiring Box to the Bracket...
  • Page 35 Attach the bulkhead cover shown in Figure 3-11 to the left side of the wiring box. (see Figure 3-14) Tool required: No.2 Phillips head screwdriver, torque value of 1.6N.m (14.2in-lbs) Standard wirebox H4 wirebox Figure 3-14 Attach the Cover to the left side of the Wiring Box Optional - Install an anti-theft padlock when the installation is complete.
  • Page 36 The anti-theft padlock shackle should meet the requirements of the dimensions shown in Figure 3-16: Recommended lock size: A: Shackle diameter 3~6mm B: Shackle width 20~50mm C: Shackle height 20~50mm Figure 3-16 Dimensions of Anti-Theft Padlock Shackle...

  • Page 37: Electrical Installation

    3.3. Electrical Installation NOTICE: The inverters must be installed in accordance with the National Electric Code, NFPA 70, and any local codes or jurisdictions. A PV array sizing tool is available for download at http://www.chintpowersytems.com accessed by selecting the Product Downloads link to get to String Sizing tool.
  • Page 38 Figure 3-18 Removing the Wiring Box Cover To reinstall the cover, replace cover and align the screws. Use a No. 3 Philips head screwdriver to secure the 4 screws on the cover. Torque to 35.4 in-lbs (4 N.m.) INSTRUCTION: It is important to use hand tools (e.g. Screwdriver or T-handle, #3 Phillips) and not power drivers or other types of screw drivers.
  • Page 39 3.3.2. Wiring boxes 20.5in(520mm) 19.0in(483mm) 17.5in(445mm) 13.2in(336mm) 10.2in(258mm) 7.1in (180mm) DC INPUT COMM. PORT DC INPUT AC OUTPUT  For more details please see the user manual. WARNING: High touch current . Earth connection essential before connecting supply. 2 3 2 Figure 3-19(a) Conduit Knock-out Locations on the Standard wirebox ①...
  • Page 40 Figure 3-19(b) Internal Connection Points within the Standard wirebox ⑤ DC Input fuse holder/terminal ⑥ DC SPD (Surge Protective Device) ⑦ Internal ground terminal ⑧ AC output terminal block...
  • Page 41 9.4 in. (237mm) 3.9 in. (99mm) COMM. PORT AC OUTPUT Do not disconnect under load. PV 1 PV 2 PV 3 WARNING: High touch current . Earth connection essential before connecting supply.  For more details please see the user manual. Figure 3-20(a) Conduit Knock-out Locations on the H4 wirebox ①...
  • Page 42 AC Output: Use 90 ¡ã C wire, either 3~2/0AWG copper or 2~2/0AWG aluminum, torque 110 in-lbs. AC Ground: Use 90¡ã C copper wire, 6~ 4AWG for internal grounding bar or external grounding nut , torque 50 in-lbs. Figure 3-20(b) Internal Connection Points within the H4 wirebox ⑦...
  • Page 43 azimuth. Each MPPT employs a method known as perturb and observe for seeking and tracking the maximum power point along the I/V curve of the PV array. During operation each MPPT will make small adjustments to the PV voltage and then executes a power measurement;...
  • Page 44 Table 3-4a DC Input Specifications (Independent Mode) Specification (Independent Mode - per MPPT) Model SCA60KTL-DO/US-480 SCA50KTL-DO/US-480 30kW (Combined ≤ 75kW) 33kW (Combined ≤ 90kW) Max PV Power Max PV Voltage 1000Vdc 1000Vdc Start-up 330 / 80W 330 / 80W Voltage / Power...
  • Page 45 INSTRUCTION: The Working Mode of the inverter may be configured from 3 MPPTs (Independent Mode [Factory Default]) to 1 MPPT (Parallel Mode) operation. Parallel mode must be performed by a CPS Service Technician. Contact CPS Customer Service for further information.
  • Page 46 The larger rated fuses may be required for combined input strings; for example, when Y branch connectors are used with DC field wiring to reduce PV source circuit home runs. CPS allows replacement of the factory installed 15A fuses with appropriate ampere ratings, however CPS does not provide nor stock these fuses.
  • Page 47 25A/30A fuse within each MPPT. Use of different fuses or incorrectly sized fuses can cause damage to equipment or create unsafe working conditions. Any damage resulting from incompatible fuses is not covered by the CPS warranty. NOTICE: Note 1: The temperature rating of the PV Source circuit conductors should be no less than 90°C (194°F).
  • Page 48 Ensure correct polarity of the PV Strings before terminating the DC source circuits. Referring to Figure 3-22, the wiring from the PV string pairs must be checked according to the following steps: A. Use a multi-meter to measure the PV strings’ conductor ends and check the polarity.
  • Page 49 3.3.3.4. DC Fuseholder Torque Specification The inverter wiringbox may be assembled using fuse holders supplied by either Bussmann or Mersen (Ferraz Shamut). The touch safe fuse holders have unique terminal torque values specified by their manufacturers. The fuse holders can be identified by color markings;...
  • Page 50 3.3.3.5. DC Connection for Standard Wiringbox This section is intended for the Standard wirebox connections. Refer to Section 3.3.3.6 for connections to the H4 wirebox connections. Using the 1-1/2 inch openings. Remove the factory installed liquid-tight hole plugs from the DC knockout holes in the wiring box and install 1-1/2 inch Trade Size conduit and conduit fittings.
  • Page 51 DC INPUT COMM. PORT DC INPUT  For more details please see the user manual. WARNING: High touch current . Earth connection essential before connecting supply. Figure 3-23 DC input through single knockout hole Table 3-7 Tools Required for Cable Termination Tools Remark #2 Phillips head screwdriver...
  • Page 52 INSTRUCTION: 10 AWG wire ferrules are provided in the Accessory Kit for the Standard wirebox. The ferrules are intended to preclude the onset of stray/lose wire strands or "birdcaging" of the conductor during installation, and improve the integrity of the termination. Use of the wire ferrules is not mandatory and shall not void the product warranty if not used.
  • Page 53 Figure 3-24 Bypass Terminal option installed within the Standard wirebox...
  • Page 54 3.3.3.6. DC Connection for H4 Wiringbox This section addresses the DC connections to the H4 wiringbox. If the Standard wiring box is used reference Section 3.3.3.5. NOTICE: The Amphenol H4 connectors provided within the Accessory Kit must be used for the DC input with the H4 wirebox. Male and Female H4 connectors with 14awg contact pins are provided.
  • Page 55 Table 3-8 Contact terminals for H4 connectors Item Function Socket solid contact for Positive DC cable Pin solid contact for Negative DC cable Insertion process solid contacts: When inserting stripped conductor into contact barrel, verify all conductor strands are captured in the contact barrel and the conductor is visible in the inspection hole.
  • Page 56 Assembly process H4 connector. Insert contact cable assembly into back of male and female connector. A “click” should be heard or felt when the contact cable assembly is seated in correct position. Contacts cannot be removed once seated. See Figure 3-29 and Figure 3-30.
  • Page 57 Figure 3-29 Connector body tightening NOTICE: Confirm the following points before connecting the assembled H4 DC cables to the inverter: Check the GND conductor is well connected. Refer to Section 3.3.4 for detailed information regarding the ground connection. Confirm the DC Disconnect switch is in the OFF position. Connect the assembled H4 DC connectors with the respective mating positive and negative connectors on the H4 wirebox.
  • Page 58 The transformer VA rating must be at least 100% of the sum of the connected inverter VA ratings. CPS recommends the transformer VA rating be selected based on IEEE C57.159-2016 Guide on Transformers for application in Distributed Photovoltaic (DPV) Power Generation Systems. It is the responsibility of the system designer to determine and take in account the reliability of the transformer or other system parameters.
  • Page 59 3.3.4.2. AC Connections This section includes instructions to connect the AC conductors to the inverter and grounding options. Table 3-9 Tools Required for Cable termination Tools Remark 5mm flat screwdriver Internal grounding bar #3 Phillips head screwdriver External grounding 14mm hex socket wrench AC terminal block Diagonal pliers or cable cutters Cut cable...
  • Page 60 DC INPUT COMM. PORT DC INPUT  For more details please see the user manual. WARNING: High touch current . Earth connection essential before connecting supply. Fig 3-32 AC Input through single knock-out hole Remove the M6x18 screws (4 pcs) securing the AC gland plate to the wiring box.
  • Page 61 NOTICE: Terminate the Ground cable prior to terminating the AC cables. Grounding/Bonding. The inverter provides 1 grounding connection on the AC side and one bonding location. These configurations are illustrated below (Figure 3-33). Grounding via the ground busbar (left) [1] This is required for grounding the equipment by running the EGC with the ungrounded conductors.
  • Page 62 AC Output: Use 90¡ã C wire, either 3~2/0AWG copper or AC Output: Use 90¡ã C wire, either 3~2/0AWG copper or 2~2/0AWG aluminum, torque 110 in-lbs. 2~2/0AWG aluminum, torque 110 in-lbs. AC Ground: Use 90¡ã C copper wire, 6-4AWG for internal AC Ground: Use 90¡ã...
  • Page 63 Table 3-10 Torque and Conductor Specifications Connection Point Conductor Range Torque Value AC output terminal block 6-3/0 AWG (CU/AL) 14.25 N-m (126 in-lbs） 5.65 N-m （50 in-lbs） Internal grounding bar 6-4 AWG (CU) 5.65 N-m （50 in-lbs） External grounding point 6-4 AWG (CU) The maximum acceptable conductor size that may be terminated to the AC output terminal is restricted based on the compression lug maximum dimensions shown in...
  • Page 64 INSTRUCTION: The neutral conductor from the inverter to point of interconnection (POI) is optional. The function of the neutral, when used, is to provide a point of reference for measurement purposes that is essentially at ground potential. The neutral conductor is for control or measurement purposes only, and therefore may be sized according to NEC section 705.95(B).
  • Page 65 Figure 3-36(a) External Ground Point Location of Standard wirebox 9.4 in. (237mm) 3.9 in. (99mm) COMM. PORT AC OUTPUT Do not disconnect under load. PV 1 PV 2 PV 3 WARNING: High touch current . Earth connection essential before connecting supply. ...
  • Page 66 Information: If aluminum conductors are being used, CPS recommends the following steps to prepare each conductor prior to landing and terminating to the AC terminal block: Strip the outer insulating jacket from the conductor and use care so as not to nick any of the strands.

  • Page 67: Communication Connection

    Max AC OCPD CPS SCA50KTL-DO/US-480 110A CPS SCA60KTL-DO/US-480 100A 125A 3.4. Communication Connection CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters support industry standard Modbus RS485 communication. The communication board is in different places in the standard (Figure 3-39(a) and H4 wiringboxes (Figure 3-39(b)).
  • Page 68 AC Output: Use 90¡ã C wire, either 3~2/0AWG copper or 2~2/0AWG aluminum, torque 110 in-lbs. AC Ground: Use 90¡ã C copper wire, 6-4AWG for internal external stud grounding bar or grounding , torque 50 in-lbs. Figure 3-39(a) Communication Board of Standard wirebox AC Output: Use 90¡ã...
  • Page 69 Connection Interfaces termination resistance 3.4.2. RS485 Communication CPS recommends the following cable for inverter RS485 communications: UTP CAT-5e or (3) 18-22AWG communication cables. It is recommended that industrial grade shielded RS485 cable be used in lieu of unshielded twisted pair. Communication cable such as (CAT5) or Belden 3106A cable for RS485 5 pin connector is preferred.
  • Page 70 Figure 3-41 RS485 Connection of Standard wirebox 3.4.3. RS485 Network Set-up When the inverters are monitored via the RS485 communication, a unique RS485 address for each inverter can be set up through the LCD interface. Up to 32 inverters can be connected in the RS485 communication network. The daisy-chain topology is recommended for the RS485 network connection to minimize noise and bus reflections, as shown in Figure...
  • Page 71 DANGER: Disconnect the inverter from the AC grid and PV modules before removing covers or opening the equipment. Wait at least 5 minutes after disconnecting from the DC and AC sources before servicing or maintaining the inverter. Ensure hazardous high voltage and energy inside the inverter has been discharged prior to servicing.
  • Page 72 If the inverter is the last Modbus device in the daisy chain, make sure the Modbus termination switch S1 is in the ON position enabling Modbus termination. Do not turn the switch to the ON position in any other inverters of the daisy chain.

  • Page 73: User Interface

    4. User Interface This section is intended to orient the user with the inverter interface prior to turning the system on and commissioning. Description of LCD Panel The inverter’s LCD panel consists of the LCD screen, four LED status indicator lights, a buzzer, and four user keys, as shown in Figure 4-1.
  • Page 74 Table 4-1 LED Indication LED light Name Status Indication Light Energized (control panel starts to Working work) POWER power Light light Power supply not working Light In grid-tied power generation state Grid-tied operation Derated running status (light up 0.5s, Flash indication light off 1.6s) light...

  • Page 75: Operation State

    Table 4-2 Definition of the Keys Description Definition of function Escape key Back/end/mute Confirm entering the menu/confirm set Enter key value/Switch to parameter setting mode Page up in selection menu/+1 when setting parameters Page down in selection menu/-1 when Down setting parameters Operation State “POWER”...

  • Page 76: Interface Types

    Interface Types Users can perform the corresponding operations with the 4 function keys, described in Table 4-2, according to the indications of the LCD display. The LCD screen will display different interfaces based on the operation modes of the inverter. There are four operation modes: Logo interface mode (as shown in Figure 4-2), Normal operation and Standby modes (as shown in Figure 4-3), and Fault mode (as shown in...
  • Page 77 normal mode. The inverter will switch from standby mode to fault mode if a malfunction occurs. E-T:0.0kWh E-D:0.0kWh PV1:0.0V 0.0A Standby Addr:001 2015-10-22 12：00:00 Figure 4-3 Default Display Interface for Normal Operation If the inverter experiences a Fault it will enter Fault mode and display the current or most recent faults.

  • Page 78: Main Menu

    Main Menu LCD screen displays “default indication interface” when the inverter is in operation mode. Press ESC in this interface to escape the default interface and Press ENT to access the main operation interface. The main operation interface is shown in Figure 4-5. Main Menu Measurement Data Setting...
  • Page 79 4.4.1 Measurement Data When Measurement Data is selected in the main screen, pressing the ENT key opens the operation information as shown in Figure 4-6. Check the information by pressing . Return to the previous menu by pressing the ESC key. PV Information Independent PV Input Mode...
  • Page 80 4.4.2 Setting Move the cursor to Setting in the main interface. Press the ENT key to be prompted for the password: “ 1111” as shown in Figure 4-7. Enter the password number by pressing , selecting the numeral, and pressing the ENT key to input and proceed to the next digit of the password number.
  • Page 81 The Setting menu contains eight submenus: System Parameters , Control Command , Protection Parameters , LVRT/HVRT Setup , Power Derating Setting , Reactive Power Derating Setup , ARC Parameters , and Other Parameters . Setting Setting Others Parameters System Parameters Control Command Protection Parameters LVRT/HVRT Setup...
  • Page 82 Grid Connection Rule. Multiple grid standards are available. Press to select the corresponding grid standard required for the installation and press the ENT key . Grid Connection Rule IEEE1547 CA Rule-21/UL 1741 SA HECO-HM HECO-ML NONE Figure 4-10 Setting Grid Rule INSTRUCTION: Please check with your local electric utility supply company before selecting a grid standard.
  • Page 83 “Independent" or "Parallel" mode. The inverter is factory set in Independent mode. If this needs to be set to Parallel contact CPS to have this setting changed. Neutral Line Setting. This option allows the user to select “Yes/No”...
  • Page 84 Clear Running Record. Clear the running information. This contains normal operating information such as when the inverter starts up and shuts down. Clear Fault Record. Clear the fault record for the inverter. The Fault Record can store up to 100 faults. 4.4.2.2 Control Command There are five submenus in the “...
  • Page 85 Factory Default. The manufacturer’s parameter default values can be restored when the inverter is not in operation mode. Otherwise “Fault Operated” will be reported. ARC Detect. Mannually begin an arc-fault test. The inverter will cease power production and test ARC. Arcing check and protection is mainly divided into two parts, the Arcing check board is responsible for whether there is Arcing in line, and transfer an Arc protection signal to the...
  • Page 86 minutes. The inverter will scan the maximum power point in the MPPT range, according to the following condition:  While in Parallel mode, the total input power is lower than 90% of the active power.  While in Independent mode (3 MPPTs), the input power must be lower than 75% of the rated power for each MPPT tracker.
  • Page 87 4.4.2.3 Protect Parameters This interface is used to display and set the Protect parameters of the AC grid voltage, frequency and recovery, etc, as shown in Figure 4-13. Grid Over Voltage Protection Grid Under Voltage Protection 110.00% 88.00% GridVolMax1 GridVolMin1 Enable Enable VolMaxTripT1(S)
  • Page 88 Table 4-3 Protection Parameters (IEEE1547 and Rule21) Grid Voltage Protection IEEE1547 Rule21 Setting Range Setting Range Parameter name Description (Min, Default, Max) (Min, Default, Max) Threshold value of {100.00%, 110.00%, {100.00%, 110.00%, GridVoltMax1 Level 1 Max. grid 135.00%} 135.00%} voltage Threshold value of VoltMaxTripTime1(S) Level 1 Max.
  • Page 89 Table 4-3 Protection Parameters (IEEE1547 and Rule21) cont'd Grid Frequency Protection IEEE1547 Rule21 Setting Range Setting Range Parameter name Description (Min, Default, Max) (Min, Default, Max) Protection threshold GridFrqMin1 value of Level 1 Min. {54, 59.5, 60} {45, 58.5, 60} grid frequency Trip time of Level 1 FrqMinTripT1 (S）...
  • Page 90 Table 4-3 Protection Parameters (IEEE1547 and Rule21) cont'd Grid Recovery IEEE1547 Rule21 Setting Range Setting Range Parameter name Description (Min, Default, Max) (Min, Default, Max) Recovery Max threshold {80.00%, 107.92%, {80.00%, 107.99%, VolMax (V) of grid voltage protection 135.00%} 135.00%} Recovery Min threshold of {20.00%, 90.08%, {20.00%, 90.00%,...
  • Page 91 4.4.2.4 LVRT/HVRT Parameters LVRT/HVRT” is used to set the LVRT and HVRT parameters. Move the cursor to this item, and press the ENT key to set the parameters. There are 7 pages of LVRT/HVRT parameter settings. These can be changed in the menu tree (Figure 4-14) or by the LVRT (Figure 4-15) and HVRT (Figure 4-16) graphs.
  • Page 92 Through Trip Time/S 2 4 6 8 10 12 14 16 18 20 22 Figure 4-15 The LVRT Curve 1.25 Through 1.15 5，6,7,8 Trip 1.05 Time/S 2 4 6 8 10 12 14 16 18 20 22 Figure 4-16 The HVRT Curve...
  • Page 93 Table 4-4 LVRT Parameters (IEEE1547 and Rule21) LVRT IEEE1547 Rule21 Setting Range Setting Range Parameter name Description (Min, Default, Max) (Min, Default, Max) Threshold value of Low {0%, 0%, 100%} {0%, 0%, 100%} LVRTVolt (1,2) voltage ride through (1 & {0%, 0%, 100%} {0%, 0%, 100%} point)
  • Page 94 Table 4-5 HVRT Parameters (IEEE5147 and Rule21) HVRT IEEE1547 Rule21 Setting Range Setting Range Parameter name Description (Min, Default, Max) (Min, Default, Max) Threshold value of high {100%, 125%, 135%} {100%, 125%, 135%} HVRTVolt (1,2) voltage ride through (1 & 2 {100%, 125%, 135%} {100%, 125%, 135%} point)
  • Page 95 Table 4-6 LVRT and HVRT Parameters (IEEE5147 and Rule21) LVRT and HVRT Control IEEE1547 Rule21 Setting Range Setting Range Parameter name Description (Min, Default, Max) (Min, Default, Max) 0: Disable 1: Enable, no reactive LVRTModeSetting power output (0, 0, 2) (0, 2, 2) 2: Enable, reactive power output...
  • Page 96 4.4.2.5 Power Derating Setup “Power Derating Setup” menu is used to set the active power derating parameters including Active Power Derating, Over frequency derating, Low frequency derating, High temperature frequency derating, etc. The parameters are shown in Figure 4-17. Power vs Friquency 60.4 OvrFrqMin(Hz) OvrFrqMax(Hz)
  • Page 97 Table 4-7 Power Derating Setup Voltage-Watt IEEE1547 Rule21 Setting Range Setting Range Parameter name Description (Min, Default, Max) (Min, Default, Max) The trigger voltage of OvrVoltTrip {100%,110%,135%} {100%,110%,135%} OverVoltage derating The rate of OverVoltage OvrVoltSlop {0%,0%,100%} {0%,0%,100%} derating The filtering time of OvrVoltFilterT(s) {1,60,90} {1,60,90}...
  • Page 98 4.4.2.6 Reactive Power Derating Setup The Reactive Power Derating menu is used to set the Grid reactive power derating parameters including PF parameters, Qu parameters, etc. The parameters as shown in Table 4-8. PF vs Voltage Reactive Power vs Grid Voltage 1.000 107.99% pFSetValue...
  • Page 99 Note: The PF and Q value can be adjusted by remote software if the “Remote” is selected. pFSetValue：Set the PF value. This function changes the reactive power by adjusting the Power Factor. pFCurve functions：PF curve mode. Using the curves to set the PF(P) setpoints (See Figure 4-19).
  • Page 100 Q(U) Curve：Q(U) curve mode. Using the curves to set the reactive power setpoints (See Figure 4-20). The reactive power compensation changes according to the grid voltage. These functions are only available for IEEE-1547 grid standards. Q(%) (QuCurveU2i,QuCurveQ2i) Inductive (QuCurveU1, QuCurveQ1) (QuCurveU1i, U(V) QuCurveQ1i)
  • Page 101 Table 4-9 lists the parameters for PF Set, PF(P) Curve and Q(U) Curve modes. Press ENT to start the modes after the parameters are set. Table 4-9 Reactive Power Control (IEEE-1547 and Rule21) Grid Reactive Power Derating IEEE1547 Rule21 Setting Range Setting Range Parameter name Description...

  • Page 102: Other Parameters

    4.4.2.7 Arc Parameters ARC Parameters is used to enable/disable the ARC function and set the ARC parameters. These settings are only to be changed by CPS personnel with approval from the AHJ. ARC Bandwith Setting ARC Bandwith Setting Bandwidth1 Bandwidth2...
  • Page 103 Figure 4-22 Other Parameters Setting Table 4-10 Other Parameters Other Parameters IEEE1547 Rule21 Setting Range Setting Range Parameter name Description (Min, Default, Max) (Min, Default, Max) PowerOnDelay (s) Startup delay time {0, 5, 1200} {0, 5, 1200} The output power will slowly increase due PVSlow StartSlope {0.01%, 10.00%,...
  • Page 104 MPPTScanPeriod (s) MPPT Scan Cycle (300, 3600, 5400) (300, 3600, 5400) Other Parameters (Cont’d) IEEE1547 Rule21 Setting Range Setting Range Parameter name Description (Min, Default, Max) (Min, Default, Max) Minimum ISOProtection (Ω) insulation (1k, 140k, 2000k) (1k, 140k, 2000k) resistance The minimum StarUPMinTemp (C) startup...
  • Page 105 4.4.3 Power ON/OFF 4.4.3.1 Manual Power ON/OFF Restarting the inverter is required after regulation setting or manual (fault) shut-down. Press ESC or ENT to access the Main Menu. Scroll the curser down to highlight POWER ON/OFF and press ENT to select. Move the cursor to “ON” and press ENT to start the inverter.

  • Page 106: Current Error

    4.4.4 History Record Move the cursor to History Record in the main menu interface. Press ENT to check the history information.There are 3 submenus in the History Record menu: Current Error , Running Record and Fault Record . See Figure 4-23.

  • Page 107: Fault Record

    DNS Server 0.0.0.0 Address Range P2/2 Figure 4-24 Device Information This menu provides the information to identify the version of boards in the inverter, model number, serial number and data logger information. This information may be required when contacting CPS service.

  • Page 108: Conductor Connections

    WARNING: Please follow the guidelines below before on-grid operation to eliminate possible dangers and to ensure safety. 5. Commissioning Before powering up the PV system it is important to check the installation for any hazards that may be present. For convenience a commissioning checklist is included in this manual and can be found in the Appendix.

  • Page 109: Commissioning Steps

    Commissioning Steps Complete the list above before commissioning the inverter as follows: Turn on the AC circuit breaker. Turn “ON” the external DC switch(s)/circuit breaker(s). Skip these two steps if there are no switches or circuit breakers. Switch the Inverter’s DC Switch to the “ON” position. When the energy supplied by the PV array is sufficient, the LCD screen of inverter will light up.
  • Page 110 INSTRUCTION: Check with your local utility company before selecting a grid standard. If the inverter is operating with a wrong grid standard, the utility company may cancel the interconnection agreement. Placing the inverter into operation before the overall system complies with the national rules and safety regulations of the application is not permitted.
  • Page 111 Figure 5-4 Time Setting Choose PV Input working mode. The factory default working mode of the DC input connection and MPP Tracker is set for Independent. Contact CPS if parallel mode is required. PV Input Mode Independent Figure 5-5 Independent mode setting...
  • Page 112 Neutral Line Setting. From the previous menu, press ESC to return to the System Parameters menu. Select Neutral Line Setting and press ENT. Use the arrow keys to highlight “Yes” or “No” in regard to whether a neutral conductor is present. Press ENT. This setting will allow the inverter to display L-N voltages on the LCD.
  • Page 113 Communication Setting Baud rate： 9600 Address： 0001 Figure 5-7 Communication Setting 10. Setting the LCD contrast grade. From the previous menu, press ESC to return to System Paramters menu. Select LCD Contrast Setting and press ENT. Using the up/down arrows increase or decrease the contrast to the desired setting.
  • Page 114 12. If the inverter fails to operate normally, the “FAULT” light will illuminate and the fault menu will be displayed. Select Current Error and press ENT to access the current faults the inverter has recorded. This information will show on the LCD screen as shown in the Figure 5-9.

  • Page 115: Operation

    6 Operation Start-Up Automatic start-up: The inverter will start up automatically when the output voltage and power of PV arrays meet the set value, AC power grid is normal, and the ambient temperature is within allowable operating range. Manual Power ON/OFF: Manual Power ON/OFF is required after regulation setting or manual (fault) shut-down.

  • Page 116: Operation Mode

    Chapter 8 determine the cause of the error. Grid-tied Power Generation The CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 series inverters have an automatic grid-tied power generation process. It will check constantly whether AC power grid meets the conditions for grid-tied power generation, and test whether the PV array has adequate energy.

  • Page 117: Firmware Upgrade

    Copy the LCD firmware file and the DSP firmware file into the USB flash drive. The upgrade file needs to be placed in the root directory. Contact CPS service for the latest firmware files. Insert the USB flash drive into USB port on the inverter’s communications board.
  • Page 118 Figure 6-1 USB port for firmware upgrades Using the password to enter the Setting menu and select Firmware Update. Choose the firmware to be updated (LCD or DSP) and follow the promts on the screen. See figure 6-2. When the update is successful repeat the process, if necessary, to upate the next firmare (DSP or LCD).

  • Page 119: Maintenance And De-Installation

    WARNING: All the installation and wiring connections should be performed by qualified technical personnel. Disconnect the inverter from PV modules and the AC supply before undertaking maintenance. Do not operate or maintain the inverter until at least 5 minutes after disconnecting all sources of DC and AC.

  • Page 120: Replace The Cooling Fans

    7.1.3 Replace the Cooling Fans If the internal temperature of the inverter is too high or abnormal noise is heard, assuming the air vent is not blocked and is clean, it may be necessary to replace the external fans. Please refer to Figure 7-1 for replacing the cooling fans.

  • Page 121: Replace The Inverter

    7.1.4 Replace the Inverter Please confirm the following items before replacing the inverter:  The AC breaker of inverter is turned off.  The DC switch of the inverter is turned off. Now replace the inverter according to the following steps: Unlock the padlock if one is installed on the inverter.
  • Page 122 Use a No. 10 Hex wrench to remove the 4 screws between the inverter and the wiring box. Lift the inverter enclosure and disconnect from the wiring box. Figure 7-4 Disconnect the main housing from the wiring box If the replacement inverter is onhand and to be installed immediately, skip this step and refer to section 3.2 for installation of the inverter.

  • Page 123: De-Installing The Inverter

    DANGER: Please disconnect the electrical connection in strict accordance with the following steps. Otherwise, the inverter will be damaged and the service personnel’s life will be endangered. De-installing the Inverter De-install the inverter and wire box assembly according to the following steps when the inverter needs to be removed: Turn off the external AC breaker and/or system disconnect switch using lock-out/tag-out procedures.

  • Page 124: Fault Shutdown And Troubleshooting

    8 Fault Shutdown and Troubleshooting If a fault occurs within the system the inverter will recognize and report via the LED or LCD panel. If this occurs, reference the following section prior to contacting post-sales service. This will ensure the quickest time to resolution possible.

  • Page 125: Lcd Fault And Troubleshooting

    DANGER: Disconnect the inverter from AC grid and PV modules before opening the equipment. Make sure hazardous high voltage and energy inside the equipment has been discharged. Do not operate or maintain the inverter until at least 5 minutes after disconnecting all sources of DC and AC.
  • Page 126 Table 8-3 LCD Troubleshooting ALARM Type Error/State Fault Description / Instruction Definition: Prompt detection of abnormal temperature Possible causes: 1. Temperature Sensor socket connecter has poor contact TempSensorErr 2. Temperature Sensor is damaged Recommended solutions: 1. Observe temperature display 2. Switch off exernal AC disconnect, then back on to reboot the system;...
  • Page 127 Table 8-4 LCD Troubleshooting PROTECTION Type Error/State Fault Description / Instruction 1. Restart inverter by turning both AC and DC Protect0090 switches off. Wait for 1 minute for all energy to (Bus over voltage) discharge and turn both switches ON 2.
  • Page 128 Table 8-4 LCD Troubleshooting PROTECTION Cont’d 1. Confirm the external ambient temperature is within the specified range of operating temperature 2. Check whether air inlet is blocked TempOver 3. Check whether fan is blocked (Over-temperature 4. Check whether the location of installation is protection) appropriate or not 5.
  • Page 129 OFF. Wait for 1 minute for all energy to (The sensor fault discharge and turn both switches ON of leakage current) 2. If inverter cannot clear fault, contact CPS Service to replace Filt board or inverter. 1. Turn DC Switch OFF PVxReverse 2.
  • Page 130 Table 8-5 LCD Troubleshooting FAULT Type Error/State Fault Description / Instruction 1. Restart inverter by turning both AC and DC Fault0020 switches OFF. Wait for 1 minute for all energy to (Bus over volt discharge and turn both switches ON Hardware) 2.
  • Page 131 Table 8-5 LCD Troubleshooting FAULT cont’d 1. Restart inverter by turning both AC and DC Fault0130 switches OFF. Wait for 1 minute for all energy to (Bus over total discharge between OFF and turn both switches ON voltage) 2. If inverter cannot clear fault, replace inverter 1.

  • Page 132: Accessories

    Accessories The CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters have several optional accessories that allow the inverter to support a wide range of real world applications. 9.1 Fuse Bypass Terminals The Fuse Bypass Terminals allow for a reduction in the number of DC...
  • Page 133 Figure 9-2. Remove Plastic Touchsafe Figure 9-1. Remove Wirebox Cover Finger Guards Figure 9-3. Bypass Terminals Installed Figure 9-4. Bypass Terminals Installed on POS Input on NEG Bus...

  • Page 134: Shade Cover (Ssc-60St)

    Field testing at PVEL showed up to 15% reduction in operating temperatures of inverters with shade covers installed in direct sunlight. This report can be found on the CPS America website under application notes. https://www.chintpowersystems.com/downloads/application-notes/PV EL-Field-Testing-Report-28kW-Inveter-Shade-Plate.pdf...

  • Page 135: Technical Data

    10 Technical Data 10.1 Datasheet Model Name SCA50KTL-DO/US-480 SCA60KTL-DO/US-480 DC Input Max. PV Power 75kW (30kW per MPPT) 90kW (33kW per MPPT) Max. DC Input Voltage 1000V Operating DC Input Voltage 200-950V Range Start-up DC Input Voltage / 330V / 80W...
  • Page 136 Display and Communication User Interface and Display LCD + LED Inverter Monitoring Modbus RS485 Site Level Monitoring CPS Flex Gateway (1 per 32 inverters) Modbus Data Mapping Remote Diagnostics / FW Standard / with Flex Gateway Upgrade Functions Mechanical Data Dimensions (WxHxD) 39.4 x 23.6 x 10.24 in.

  • Page 137: Measurement Tolerances

    ±5% for real-time measurements with output power below 20% nominal power  ±3% for real-time measurements with output power above 20% nominal power  ±4% for all statistical data CPS inverter tolerances are specified below:  Voltage tolerances: ±1%  Current tolerances: ±2%  Frequency tolerances: ±0.5% ...

  • Page 138: Production Graphs

    10.3 Production Graphs The following sections illustrate the inverter production/derating in terms of DC voltage, ambient temperature, altitude and grid voltage. 10.3.1 Input Voltage Derating Graph When the DC input voltage is lower than 480/540V or higher than 850V the inverter begins derating, as shown in Figure 10-1 and 10-2:...
  • Page 139 Figure 10-1 CPS SCA50KTL kW and kVA derating curves of PV input voltage...
  • Page 140 Figure 10-2 CPS SCA60KTL kW and kVA derating curves of PV input voltage...
  • Page 141 Figure 10-2 CPS SCA60KTL Reactive Power Capability...

  • Page 142: High Temperature Derating Graph

    10.3.2 High Temperature Derating Graph When the ambient temperature is higher than 113℉ (45℃), the inverter output power (Pn) will begin to derate, as shown in Figure 10-2: Pin/Pn 100% -3%/℃ Tamb(℃) Figure 10-4 SCA50/60KTL Derating Curve with High Temperature 10.3.3 Altitude Derating Graph When the altitude is higher than 9842.5ft (3000m), the rated output power (Pn) of the inverter will decrease, as shown in Figure 10-3:...

  • Page 143: Grid Voltage Derating Graph

    Pin/Pn 100% -30%/km 3000 4000 Altitude(m) Figure 10-3 SCA50/60KTL Derating Curve with High Altitude 10.3.4 Grid Voltage Derating Graph When the grid voltage is within 100%~110% (Un ~ 1.1*Un) of the Rated Output Voltage, the inverter output power (Pn) may reach 100%. When the grid voltage is lower than the Rated Output Voltage, the inverter will limit the AC Output Current and the output power (Pn) will begin to derate, as shown in Figure 10-4.

  • Page 144: Limited Warranty

    The warranty policy of this product is specified in the contract; otherwise, the standard warranty is 10 years. For service, Chint Power Systems America will provide local support. For Warranty terms, please refer to the CPS America standard warranty policy in place at time of purchase.
  • Page 145 CHINT POWER SYSTEMS AMERICA CO., LTD. Address: 700 International Parkway, Suite 102 Richardson, Texas 75081 Service Hotline: 855-584-7168 Email: AmericaSales@chintpower.com Website: www.chintpowersystem.com SHANGHAI 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 Part No: 9.0020.0334 A0 This manual is subject to change without prior notification.

This manual is also suitable for:

Sca60ktl-do/us-480

Table of Contents

Save PDF