1. Manuals
  2. Brands
  3. CPS Manuals
  4. Inverter
  5. SCA Series
  6. Installation and operation manual

CPS SCA Series Installation And Operation Manual

Grid-tied pv inverter
Hide thumbs Also See for SCA Series:
Table of Contents

Advertisement

Quick Links

Enlarged version
CPS SCA Series Grid-tied PV Inverter
CPS SCH100KTL-DO/US-600
and SCH125KTL-DO/US-600
Installation and Operation Manual - Rev 1.0
CHINT POWER SYSTEMS AMERICA CO.
REVISON 1.0 FEB 2018

Advertisement

Table of Contents
loading

Related Manuals for CPS SCA Series

Summary of Contents for CPS SCA Series

  • Page 1 CPS SCA Series Grid-tied PV Inverter CPS SCH100KTL-DO/US-600 and SCH125KTL-DO/US-600 Installation and Operation Manual - Rev 1.0 CHINT POWER SYSTEMS AMERICA CO. REVISON 1.0 FEB 2018...

  • Page 3: Table Of Contents

    Table of Contents Before You Start… .................. 1 Chapter 1 IMPORTANT SAFETY INSTRUCTIONS ........ 2 Chapter 2 Overview ................5 2.1 Inverter for Grid-tied PV Systems ......... 5 2.2 Product Features ..............5 2.3 Product Protection Functions..........6 2.4 Schematic Diagram and Circuit Design ........ 7 2.5 Appearance and Main Item Description ........
  • Page 4 5.4.2.5 Active Power Derating ........ 71 5.4.2.6 Reactive Power Derating ......73 5.4.2.7 Others ............76 5.4.3 Fault Recording ............78 5.4.4 Firmware Upgrade ............. 78 5.5 History .................. 82 5.6 Turn ON/OFF ............... 82 Chapter 6 Fault Shutdown and Troubleshooting ......... 84 6.1 LED Fault and Troubleshooting ..........

  • Page 5: Before You Start

    Utility Grid-tied PV Inverters. Be sure to read this manual carefully before using. Thank you for choosing a CPS Grid-tied PV Inverter. This PV Inverter is a high performance and highly reliable product specifically designed for the North American Solar market.

  • Page 6: Chapter 1 Important Safety Instructions

    Chapter 1 IMPORTANT SAFETY INSTRUCTIONS (SAVE THESE INSTRUCTIONS) Please read this user manual carefully before product installation. CPS reserves the right to refuse warranty claims for equipment damage if the user fails to install the equipment according to the instructions in this manual.
  • Page 7 WARNING: All installation and wiring connections should be performed only by qualified technical personnel. Disconnect the inverter from PV modules and the AC grid before maintaining and operating the equipment. Risk of electric shock and fire. Use only with PV modules that have a maximum system voltage of rating of 1500V or higher.
  • Page 8 CAUTION: CPS SCH100KTL-DO/US-600 and SCH125KTL-DO/US-600 inverters are approx. 55kg (121 pounds). The wire-box portion of the inverters are approx. 25kg (55pounds)/ standard wire-box or 15kg (33pounds)/ centralized wire-box; Please ensure the mounting bracket is properly installed before hanging the inverter and wire-box on the bracket.

  • Page 9: Chapter 2 Overview

    Chapter 2 Overview 2.1 Inverter for Grid-tied PV Systems CPS SCH100KTL-DO/US-600 and CPS SCH100KTL-DO/US-600 3-Phase String Inverters are designed for use with carport, commercial rooftop, and large-scale PV grid-tied systems. The system is generally made up of PV modules, DC power distribution equipment, PV inverter and AC power distribution equipment (Figure 2-1).

  • Page 10: Product Protection Functions

     Long Service Life: Uses thin-film capacitors to extend inverter's service life.  1 MPPT: 1 MPPT with 16 (100kW) and 20 (125kW) inputs in the standard wire-boxes for maximum flexibility.  Wire-box option: Standard wire-box enables discrete wiring, or optional Centralized wire-box for connection of DC combiner boxes. ...

  • Page 11: Schematic Diagram And Circuit Design

    2.4 Schematic Diagram and Circuit Design The basic electrical schematic diagram of CPS SCH100KTL-DO/US-600 and SCH125KTL-DO/US-600 inverters are shown in Figure 2-2. Figure 2-2 Schematic Diagram of the SCH100/125KTL-DO/US-600 Inverter The input from PV source circuits passes through surge protection circuitry and DC EMI wave filter to the bus capacitance.

  • Page 12: Appearance And Main Item Description

    2.5 Appearance and Main Item Description Inverter with Centralized Wire-box Inverter with Standard Wire-box Figure 2-3 Appearance of the CPS SCH100/125KTL-DO/US-600 Inverters Main items of the Inverter: ① Main inverter enclosure ② Inverter wire-box ③ LED indicator lights ④ LinKit module ⑤...

  • Page 13: Anti-Islanding Detection

    2.6 Anti-islanding Detection The SCH100KTL-DO/US-600 and SCH125KTL-DO/US-600 inverters include Anti-Islanding detection as required by UL1741/IEEE1547. The inverter will continuously make bi-directional perturbations to the frequency of the output current by injecting a small amount of reactive power in order to detect a possible islanding condition.

  • Page 14: Chapter 3 Installation

    Chapter 3 Installation Below is the installation procedure for the SCH100KTL-DO/US-600 and SCH 125KTL-DO/US-600 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; B) The wire-box, mounting bracket, user manual and accessory kit.
  • Page 15 The Accessory kit (5) contains items listed below: Table 3-2 Accessory Kit Item Note M8*Expansion anchors For attaching bracket to concrete wall M8×25mm machine bolts with integrated Used with M8 expansion anchors lock washer 4 for inverter and mounting bracket; 1 for M6 X18mm Phillips screw Ground connection To connect the left and right wall bracket,...

  • Page 16: Recommendations Before Installation

    3.1 Recommendations Before Installation See Chapter 8, Technical Data for specification ranges and limits.  Check that the product environmental specifications (protection degree, operating temperature range, humidity and altitude, etc.) meet the requirements of the specific project location.  Make sure that the power grid voltage is within range for the grid standard chosen.

  • Page 17: Mechanical Installation

    3.2 Mechanical Installation (1) Dimensions 100/125kW Standard Wire-box 100/125kW Centralized Wire-box Figure 3-1 Dimensions of CPS SCH100/125KTL-DO/US-600 Inverter...
  • Page 18 (2) Installation Method (see Figure 3-2): Make sure that the mounting structure (bearing wall, rack, etc.) is suitable to support the inverter weight. Follow the mounting guidelines below: (a) If the location permits, install the inverter vertically. (b) If the inverter cannot be mounted vertically, it may be tilted backward to 15 degrees from horizontal.
  • Page 19 (3) Installation Space Requirement (see Figure 3-4): The distances between the inverters or the surrounding objects should meet the following conditions: Figure 3-4 Inverter Wall Mounting Dimensions NOTICE: The spacing between two adjacently mounted inverters should be ≥300mm (11.8 inches). Ensure that the air space around the inverter is well ventilated.
  • Page 20 Figure 3-5 Inverter Pillar Mounting Dimensions...
  • Page 21 CAUTION: The total weight of the CPS SCH100KTL-DO/US-600 and SCH125KTL-DO/US-600 inverter is approx. 80kg (176lbs). Please ensure the mounting surface is capable of supporting this weight. (4) Mounting the Inverter onto the Bracket Tools Required: Electric drill (Ф10mm/0.4in. head), No. 13 wrench, pencil/marker, No.2 Phillips head screwdriver...
  • Page 22 Figure 3-6b 100/125kW Centralized Wire-box Bracket Mounting Pattern INSTRUCTION: Before installing the brackets, first connect the left and right wall mounting brackets with 2 PCS M8 flange nuts (See Figure 3-7) (torque 12.5 Nm) 100/125kW Standard Wire-box 100/125kW Centralized Wire-box Figure 3-7 Left and Right Wall Brackets Combination...
  • Page 23 (2) Mounting the Bracket. Tools Required: Electric drill (Ф10mm/0.4in. head), No. 13 wrench. Drill holes at the marked positions with a 10mm (0.4in.) drill and insert the M8 Expansion Anchors ① into the holes; fasten the Mounting Bracket ② with the M8x25 Assembling Bolts ③ in the accessory kit.
  • Page 24 CAUTION: The main enclosure of the CPS SCH100KTL-DO/US-600 and SCH125KTL-DO/US-600 inverters is approx. 55kg (121 pounds). Ensure the mounting bracket is properly installed 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 25 Figure 3-11 Mount the Main Enclosure on the Bracket by Lifting Sling Manual mounting: Two people are needed to properly lift by the handle positions marked in Figure 3-12 and mount the inverter onto the bracket. Figure 3-12 Grab Handle Position...
  • Page 26 After hanging, push the enclosure to the right to its final position (Figure 3-13) and secure with M6x18 combination screw (torque: 53 in-lbs. (6 Nm)). Figure 3-13 The main Enclosure Position (4) Install the wire box. Tool required: No. 2 Phillips head screwdriver Remove the connector cover on the left of the wire box, Save the cover and screws (see Figure 3-14).
  • Page 27 Aligning the mark on the wire-box with the bracket (Figure 3-15), hang the wire-box on the right side of the wall bracket. Push the wire-box left to its final position meeting the main inverter enclosure. Figure 3-15 Wire-box Position C. Connect the wire-box to the main enclosure, using the M8 Flanged Nut (4pcs) (torque: 110.6 in-lbs.
  • Page 28 (5) Storing the connector covers. Tool required: No. 2 phillips head screwdriver. Attach the inverter’s connector cover and wire-box connector cover shown in Figure 3-10 and Figure 3-14 to the top of the inverter and wire-box. (Figure 3-17) Torque value of 1.6N.m (14.2in-lbs.). Figure 3-17 attach the Cover to the top of the Inverter...
  • Page 29 INSTRUCTION: The LinKit module is required for the commissioning of the inverter. This step does not need to be completed until commissioning. If multiple inverters are connected to the same data network only ONE LinKit is required. Install the LinKit in the first inverter in the network which contains the FlexGateway.
  • Page 30 (7) Optional Anti-Theft Padlock. The anti-theft padlock is used to prevent the inverter from being stolen when the equipment is installed outdoors. You can lock the inverter on the bracket, as shown in Figure 3-18: Figure 3-18 Location of the Anti-Theft Padlock The anti-theft padlock should meet the requirement of the dimensions shown in Figure 3-19.

  • Page 31: Electrical Installation

    3.3 Electrical Installation 3.3.1 Removing/Replacing the Wire-box Cover Tool required: No.3 Phillips head screwdriver. Tabs hold the left side of the cover in place and it is secured by two screws on the right side. Use a No.3 Philips head screwdriver to remove the 2 screws on the wire-box. Pull the right side of the cover away from the wire-box approximately 1 inch before sliding the cover right to release the tabs.
  • Page 32 3.3.2 Wire-box Details (1) Exterior Wire-box Details Knock-outs for DC input ① Knock-out for AC output ② External bonding connection point ③ Knock-out for communication output ④ Side Front Bottom Figure 3-21 Conduit Knock-out Locations (Centralized Wire-box)
  • Page 33 Front Side ① Knock-outs for DC input ② Knock-out for AC output ③ External bonding connection point Bottom ④ Knock-out for communication output Figure 3-21 Conduit Knock-out Locations (Standard Wire-box) (2) Interior Wire-box Details ⑤ Positive DC input connections ⑥ Negative DC input connections ⑦...
  • Page 34 Figure 3-20 Internal Connection Points (Standard Wire-box) The SCH100/125KTL-DO/US-600 Inverter operates with ungrounded arrays, although the PV system requires an equipment grounding conductor. Figure 3-21 Internal Grounding Points (Centralized Wire-box)

  • Page 35: Dc Connection

    Figure 3-21 Internal Grounding Points (Standard Wire-box) 3.3.3 DC Connection (1) DC Fuse Configuration SCH100KTL-DO/US-600 SCH125KTL-DO/US-600 Standard wire-boxes accept 15, 20, 25 and 30A fuses. The desired fuse must be specified when ordering the inverter. Customers must verify that the appropriate fuses are installed depending on the actual configuration of PV strings.
  • Page 36 Table 3-5 DC Fuse selection (Standard wire–box) Brand 15A/1500V 20A/1500V 25A/1500V 30A/1500V Littlefuse Adler Sinofuse Note 1: The 1500V Littelfuse KLKD fuse series are recommended. Note 2: Two 30A fuses shall not be installed in adjacent fuse holders. Note 3: The recommended fuse types are configured according to the condition that the input strings are the same.
  • Page 37 conductors according to the following steps: Use a multi-meter at the end of the PV string to check the polarity. The positive (+) terminal of conductor should match the positive (+) terminal of inverter’s DC input. iii. The negative (-) terminal of conductor should match the negative (-) terminal of inverter’s DC input.
  • Page 38 Table 3-7 Tools Required for Conductor Termination Tools Remark PV String connections (Standard No. 2 Phillips bit and a wire-box) Torque driver PV output conductor connections (Centralized wire-box) Diagonal pliers Cut cable Wire stripping pliers Remove jacket Choose the conductor size and material for the inverters according to the following configuration table: Table 3-3 Cable Specifications Terminal...
  • Page 39 Figure 3-22 connect the DC cable (Standard wire box) Figure 3-23 Connect the DC cable (Centralized Wire-box)

  • Page 40: Ac And Ground Connection

    Strip approximately ½ inch of the cable jacket from the end of the string conductor. Insert the conductor into the fuseholder terminal ensuring the stranding of the conductor remains firmly twisted and does not separate. Tighten the screw to secure the conductor in the fuseholder.
  • Page 41 Table 3-9 Torque value Location Torque AC output terminal block 15 Nm (132 in-lbs.) Internal grounding bar 4 Nm (35.4 in-lbs.) Internal grounding stud 4 Nm (35.4 in-lbs.) External bonding point 4 Nm (35.4 in-lbs.) Choose the AC conductors according to the following configuration table: Table 3-10 Cables specifications Position Conductor Size...
  • Page 42 Figure 3-26 AC Output Cable Connection (Centralized Wire-box)
  • Page 43 Figure 3-27 Ground Connections (Centralized Wire-box) Figure 3-28 External Bonding Location (2) Connect the AC (L1, L2, L3, N) conductors to the terminal block and connect the grounding conductor to the internal grounding terminal block. The neutral conductor is optional.
  • Page 44 4-pole AC circuit breaker may be selected as per the following recommendation. Selecting a breaker of another size may either result in nuisance tripping or rejection from the AHJ. Table 3-11 Specification of AC breaker selection Inverter AC breaker rated current（A） CPS SCH100KTL-DO/US-600 150A CPS SCH125KTL-DO/US-600 175A...
  • Page 45 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 46 The maximum number of inverters connected to a single transformer is The recommended maximum voltage-drop on the Inverter to Point of Common Coupling (to the grid) is 2% at full load – including conductor temperature considerations. Voltage drop greater than 2% may require changing the transformer tap or as a last resort adjusting the GridMaxVolt trip point settings.
  • Page 47 Note: 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 48: Communication Connection

    3.3.5 Communication Connection CPS SCH100KTL-DO/US-600 and SCH125KTL-DO/US-600 inverters support industry standard SunSpec and Modbus RS485 communication. Below is a description of the components of the communication card and its location in the inverter wire-boxes. Figure 3-31 Communication Board (Centralized Wire-box)
  • Page 49 Table 3-12 Communication Connection Interfaces Item Picture Configuration description 12V+ 12VGND ① RS485 RS485+ (Debug only) RS485- RS485+ ② RS485 port RS485- (8-pin connector) RS485+ RS485- Firmware upgrade via USB ③ USB port P6 ④ Selector switch for Disable the termination setting the resistor 120Ω...
  • Page 50 RS485 communication cable connection ②: Choose the RS485 communication cables according to the following table: Table 3-11 Cables specifications Cable RS485 UTP CAT-5e or 3x 22 - 18AWG communication cable communication (e.g. Belden 3106A) Figure 3-32 RS485 Connection 1. Cable connection of RS485 communication (1 inverter): 8 pin connector 2.
  • Page 51 RS485 network connection: When the inverters are monitored via the RS485 communication, a unique RS485 address for each inverter can be set up through the LinKit module and application. The LinKit is installed in the first inverter in the network. Use the app to assign an address to each inverter on the network.
  • Page 52 Warning: Risk of Electric Shock. Make sure all DC and AC power to the unit has been disconnected before opening the inverter wire-box and ensure that hazardous high voltage and power inside the equipment has been discharged. Wait at least 5 minutes before opening the wire- box.

  • Page 53: Chapter 4 Commissioning (Via Internal Wireless )

    Chapter 4 Commissioning (Via internal Wireless ) WARNING: Please follow the guidelines below before on-grid operation to eliminate possible dangers to ensure safety. 4.1 Commissioning Checklist 4.1.1 Mechanical Installation  Make sure that the mounting bracket is secure and all the screws have been tightened to the specified torque values.

  • Page 54: Commissioning Steps

    4.2 Commissioning Steps Complete the checklist above before commissioning the inverter as follows: (1) Turn on the AC circuit breaker. (2) Turn on the DC circuit breaker. (Skip these two steps if there are no circuit breakers.) (3) Switch the DC Switch to the “ON” position. When the energy supplied by the PV array is sufficient, the LED of inverter will light up.
  • Page 55 Figure 4-1 LinKIT Connection (4) Input the password “PASSWORD” then set the grid “Regulation, PV Link Type, Neutral Line, RS485 and Inverter Clock” as shown in Figure 4-2. Figure 4-2 System setting...
  • Page 56 INSTRUCTION: Please check with your local electricity supply company before selecting a grid standard. If the inverter is operated with a wrong grid standard, electricity supply company cancel 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 57 If the inverter fails to operate normally, the inverter’s “FAULT” light will illuminate and the fault information will show on the Device screen. Accessing the “History” will allow the user to check the detail as shown in the Figure 4-4. Fault Figure 4-4 Fault Information Interface...

  • Page 58: Chapter 5 App Interface

    Chapter 5 APP Interface 5.1 Overview Figure 5-1 Application Interface Tree 5.2 Main Menu From the Main menu the following sub-menus are accessible:  Running Data  Settings  History Turn ON/OFF  The main menu screen provides information tabs for DC, AC and “Other” production values as well as “Version”...

  • Page 59: Running Data

    Figure 5-2 Main Menu 5.3 Running Data The Running Data sub-menu provides the power generation view with Current, Day, Month, Year and Total as shown in Figure 5-3.

  • Page 60: Settings

    Figure 5-3 Running Data 5.4 Settings To access the Settings page input the password “1111”. Figure 5-4 Accessing Settings...

  • Page 61: Inverter Parameters

    The Settings menu allows access to the following sub-menus:  Inverter Parameters  Read/Write Register  Fault Recording  Upgrade Firmware Figure 5-5 Settings Sub-menu 5.4.1 Inverter Parameters The Inverter Parameters section provides access to the following sub- menus: Regulation, PV Link Type, Neutral Line, RS 485, Inverter Clock and Change Password as shown in Figure 5-6.

  • Page 62: Read/Write Register

    Figure 5-6 Inverter Parameter Settings 5.4.2 Read/Write Register The Read/Write Register provides access to the following sub-menus:  Commands Enable/Disable   Protect  LVRT/HVRT  Active Power Derating  Reactive Power Derating Others ...

  • Page 63: Commands

    Figure 5-7 Read/Write Register 5.4.2.1 Commands The following 9 options are available in the Commands menu:  Power On/Off: Manual Power ON/OFF is required after regulation setting or manual (fault) shut-down.  Force Restart: If a fault shutdown occurs, a severe fault may have occurred inside the inverter.
  • Page 64 scanning succeeds or remain on the “MPPTScan menu” interface if the scanning fails.  ArcDetect: Execute the “ARC Detect”. The inverter will stop operating and test AFCI.  ArcAlarmClear: Used to clear the ARC fault. The operation result will appear on the Device, i.e. “Succeed” or “Failed”. ...
  • Page 65 the maximum power point at a voltage step of 5V in the MPPT range for full load and retrieve the maximum power point. ArcDetect and protection is mainly divided into two parts; the Arcing check board is responsible for whether there is Arcing in line, and transfer Arcing protection signal to the DSP in the dominating control board.

  • Page 66: Enable/Disable

    5.4.2.2 Enable/Disable Enable/Disable is used to enable or disable the functions and protect the following parameters: Figure 5-9 Parameter Enable/Disable...

  • Page 67: Protect

    5.4.2.3 Protect The Protect interface is used to display and set the protection parameters of the AC grid voltage, frequency and recovery, etc. Figure 5-10 Protect Parameters...
  • Page 68 Table 5-1 The Protection Parameters (IEEE1547 and Rule21) Grid Over Voltage Protection Setup range Setup range (lower limit, (lower limit, Parameter name Description default, upper default, upper limit) IEEE-1547 limit) Rule-21 Threshold {100.00%, {100.00%, value of Level GridVoltMax1 110.00%, 110.00%, 1 Max.
  • Page 69 Setup range Setup range (lower limit, (lower limit, Parameter name Description default, upper default, upper limit) IEEE1547 limit) Rule-21 Threshold value of Level VoltMinTripTime2(S) {0, 1.00, 655} {0, 10.50, 655} 2 Min. grid trip voltage Threshold value of Level {30.00%, 45.00%, {30.00%, 50.00%, GridVoltMin3 3 Min.
  • Page 70 Grid Over Frequency Protection Setup range Setup range (lower limit, (lower limit, Parameter name Description default, upper default, upper limit) IEEE1547 limit) Rule-21 Protection threshold value GridFrqMax1 of Level 1 Max. {60, 60.5, 65} {50, 60.5, 65} grid frequency (Hz) Trip time of FrqMaxTripT1(S）...

  • Page 71: Lvrt/Hvrt

    Setup range Setup range Parameter (lower limit, (lower limit, Description name default, upper default, upper limit) IEEE1547 limit) Rule-21 Recovery Min threshold. grid FrqMin(Hz) {54, 59.8, 60} {48, 58.6, 60} Frequency protection Recovery time of FrqRecoveryT(S) grid frequency {0, 300, 655} {0, 300, 655} protection Grid Voltage Balance...
  • Page 72 Figure 5-12 LVRT Curve Figure 5-13 HVRT Curve...
  • Page 73 Table 5-2 LVRT and HVRT Parameters LVRT Setup range Setup range (lower limit, (lower limit, Parameter name Description default, upper default, upper limit) IEEE1547 limit) Rule-21 Threshold value of Low {0%, 0%, 100%} {0%, 0%, 100%} LVRTVoltPara(1,2) voltage ride through {0%, 0%, 100%} {0%, 0%, 100%} (first &...
  • Page 74 HVRT Setup range Setup range (lower limit, (lower limit, Parameter name Description default, upper default, upper limit) IEEE1547 limit) Rule-21 Threshold value of {100%, 125%, {100%, 125%, high voltage ride 135%} 135%} HVRTVoltPara(1,2) through (first & {100%, 125%, {100%, 125%, second point) 135%} 135%}...

  • Page 75: Active Power Derating

    5.4.2.5 Active Power Derating The ActivePowerDerating menu is used to set the active power derating parameters including Active Power Derating, Over frequency derating, Low frequency derating and High temperature frequency derating, etc. The parameters are shown in Table 5-3. Figure 5-14 Active Power Derating menu Table 5-3 Power Derating Setup Setup range (lower Setup range (lower...
  • Page 76 Table 5-3 Power Derating Setup Continued Setup range (lower Setup range (lower limit, default, limit, default, Parameter name Description upper limit) upper limit) Rule- IEEE1547 The trigger of OFDeratStart(Hz) OverFrequency {54,60.5,66} {54,60.2,66} derating The end frequency OFDeratStop(Hz) of Overfrequency {60,61.4,72} {60,61.5,72} derating The rate of...

  • Page 77: Reactive Power Derating

    5.4.2.6 Reactive Power Derating The ReactivePowerDerating menu is used to set the Grid reactive power derating parameters including PF parameters and Qu parameters, etc. The parameters as shown in Table 5-4 . Note: The PF and Q value can be adjusted by remote software if “Remote”...
  • Page 78 Figure 5-16 PF(P) Curve Model (3) Q(U) Curve：Q(U) curve mode. The reactive compensation changes according to the grid voltage change, as shown in Figure 5-17. INSTRUCTION: The Q(U) curve function is only available for IEEE-1547 grid standards. Figure 5-17 Q(U) Curve Mode...
  • Page 79 Table 5-4 lists the parameters of PF Set, PF(P) Curve and Q(U) Curve modes. Press Enable (refer to Section 5.4.2.2) to start up the modes after the parameters are entered. Table 5-4 Parameters of Reactive Power Control (IEEE-1547 and Rule-21) Grid Reactive Power Derating Setup range (lower Setup range (lower...

  • Page 80: Others

    Setup range (lower Setup range (lower Parameter name limit, default, upper limit, default, upper Description limit) IEEE1547 limit) Rule-21 Voltage of Q_UCurveVolt1i {90%,92.01%,99%} {90%,99%,99%} Q(U)Curve point 1i Reactive power of Q_UCurveReactPw1i {-66%,0,66%} {-60%,0,60%} Q(U)Curve point 1i Voltage of Q_UCurveVolt2i {80%,90%,92%} {80%,92%,92%} Q(U)Curve point 2i...
  • Page 81 Table 5-5 Other Parameters Setup range (lower Setup range (lower Parameter name limit, default, upper limit, default, upper Description limit) IEEE1547 limit) Rule-21 Startup delay StartDelay (0,5,1200) (0,5,1200) time PV start-up PVStartVolt(V) (860,900,1000) (860,900,1000) voltage The output power should be slowly increased due PVPowerMutateRatio to the change...

  • Page 82: Fault Recording

    Table 5-5 Other Parameters Continued Setup range (lower Setup range (lower Parameter name Description limit, default, upper limit, default, upper limit) IEEE1547 limit) Rule-21 The static threshold GFCIStaProTime value of (0,0.2,655) (0,0.2,655) Leakage current The dynamic trigger GFCIDynProCoef coefficient of (0.0%,100%,200%) (0.0%,100%,200%) Leakage...
  • Page 83 Figure 5-19 Firmware update via LinKIT (3) Use the drop-down menu then select the “Firmware on cloud”. Figure 5-20 LinKIT Firmware on cloud...
  • Page 84 (4) Choose the “LCD” or “DPS” and “Inverter Model” then click the Firmware which is to be upgraded. Figure 5-21 Choosing the firmware to upgrade...
  • Page 85 (5) Upgrade the Program. Choosing “Upgrade Firmware” and the previous selection of “LCD” or “DSP”, click start to begin upgrading. Figure 5-22 Upgrading Firmware...

  • Page 86: History

    5.5 History There are 2 submenus in the History menu: Alarm and Running Status. Figure 5-23 History menu 5.6 Turn ON/OFF Manual Turn ON/OFF: Manual Power ON/OFF is required after regulation setting or manual (fault) shut-down. (1) Select Turn ON/OFF at the bottom of the screen. (2) Select Turn ON to start the inverter.
  • Page 87 Figure 5-24 Turn ON/OFF Normally, it is not necessary to Turn OFF the inverter, but it can be shut down manually if regulation setting or maintenance is required. Move the cursor to submenu “Turn ON/OFF”. Move the cursor to “Turn OFF” and ensure, then the inverter will be shut down.

  • Page 88: Chapter 6 Fault Shutdown And Troubleshooting

    Chapter 6 Fault Shutdown and Troubleshooting 6.1 LED Fault and Troubleshooting The inverters have four LED lights on the front of the units. Table 6-1 describes the lights during operation. Table 6-1 Description of LED Light Indicators LED light Name Status Indication Light...
  • Page 89 Table 6-2 Troubleshooting of LED Lights LED fault status Solutions Turn off the external AC breaker The Power LED does Switch the DC switch to “OFF” position not light up. Check the PV input voltage and polarity Turn off the external AC breaker Switch the DC switch to “OFF”...
  • Page 90 6.2 Fault and Troubleshooting The inverter will be shut down automatically if the PV power generation system fails, such as output short circuit, grid overvoltage / undervoltage, grid overfrequency / underfrequency, high environmental temperature or internal malfunction of the machine. The fault information will be displayed on the APP interface.
  • Page 91 Recommended solutions: Observe for 5 minutes and see whether the alarm will be eliminated automatically; 3. IntFanErr Check for foreign objects on fan blades; Switch off 3-phase work power supply and then reboot the system; Contact after-sales service personnel. Table 6-4 Troubleshooting Warning Codes Definition: Internal alarm Warn0030...
  • Page 92 Recommended solutions: Protect0030 1. Restart inverter by recycle both AC and DC (Inverter Over switches. Wait for 1 minute between OFF and Current) ON for all energy to discharge. 2. If inverter cannot clear fault, replace inverter. Recommended solutions: GridV.OutLim 1.
  • Page 93 Check wires of PV and ground: 1. Turn OFF AC switch to disconnect inverter from Grid. 2. Open fuse drawers to de-couple PV strings from each other. Test strings with string test set. 3. Add one PV string at a time and start up inverter IsolationErr to see if alarm occurs.
  • Page 94 Recommended solutions: 1. Turn DC Switch OFF PV Reverse 2. Open Fuse holder to isolate PV strings (PV input reverse 3. Use meter to find which PV string is connected connection) in reverse polarity 4. Correct PV string connection Recommended solutions: 1.
  • Page 95 Table 6-6 Troubleshooting Fault Codes Recommended solutions: Fault0130 1. Restart inverter by recycle both AC and DC (Bus over total switches. Wait for 1 minute between OFF and voltage) ON for all energy to discharge. 2. If inverter cannot clear fault, replace inverter. Recommended solutions: 1.
  • Page 96 Recommended solutions: 1. Restart inverter by recycling both AC and DC Fault0060 switches. Wait for 1 minute between OFF and (CPLD Fault) ON for all energy to discharge. 2. If inverter cannot clear fault, replace Control Board or inverter. Recommended solutions: Fault0020 1.

  • Page 97: Chapter 7 Product Maintenance

    Repair or replace the cables if necessary. 7.2 Clean the Air Vent Filter The inverter can become hot during normal operation. The CPS SCH100/125KTL-DO inverters use built in cooling fans to provide sufficient air flow to help in heat dissipation.
  • Page 98 the fan tray with cable ties. Torque value: 15 in-lbs. (1.7 Nm). Install the assembled fans back to the inverter. Torque value: 13.3 in- lbs. (1.5 Nm). Figure 7-1 Replacing the Cooling Fans...

  • Page 99: Replace The Inverter

    7.4 Replace the Inverter Confirm the following steps before replacing the inverter: (1) The AC breaker of inverter is turned off. (2) The DC switch of inverter is turned off. Replace the inverter according to the following steps: Unlock the padlock if it is installed on the inverter. Figure 7-2 Unlock the Padlock (2) Use a No.
  • Page 100 Figure 7-3 Remove the screws on both sides (3) Use a No. 10 hex wrench to remove the 4 screws between the main inverter enclosure and the wire-box. Slide the wire-box right to disconnect the inverter from the wire-box. Figure 7-4 Disconnect the main housing from the wire-box...
  • Page 101 (4) Remove the screws which are connect between the inverter enclousure and installation rail, then slide the inverter enclousure left on the rail to remove. Figure 7-5 Remove the 2 screws between main housing and rail (5) Use a No. 2 phillips head screwdriver to install the connector covers on the connector of the wire-box and inverter.

  • Page 102: Chapter 8 Technical Data

    Chapter 8 Technical Data Model Name SCH100KTL-DO SCH125KTL-DO DC Input Max. PV Power 150kW 187.5kW Max. DC Input Voltage 1500Vdc MPPT Voltage Range 860-1450Vdc MPPT Full Load Operating 870-1300Vdc Voltage Range Start-up DC Input Voltage / Power 900V / 250W Rated Input Voltage 1500V 1500V...
  • Page 103 LED Indicators + APP Modbus RS485 / PLC (Standard Wire- Inverter Monitoring box) Site Level Monitoring CPS Flex Gateway (1 per 64 inverters) Modbus Data Mapping SunSpec and CPS Modbus Remote Diagnostics / FW Standard with CPS Flex Gateway (1 per...
  • Page 104 Safety UL1741-2010; UL1741-SA; CSA-C22.2 NO.107.1-01, IEEE1547a-2014; Safety and EMC Standard FCC: 47 CFR Part 15 Grid Standard IEEE 1547a-2014, CA Rule 21 Voltage-RideThru, Frequency-RideThru, Smart-Grid Features Soft-Start, Volt-Var, Frequency-Watt...
  • Page 105 When the DC input voltage is higher than 1300V, the inverter begins derating, as shown in Figure 8-1. Figure 8-1 CPS SCH100/125KTL-DO Derating Curve of PV Input Voltage When the ambient temperature is higher than 113°F/45°C, the inverter output power will begin to derate, as shown in Figure 8-2.
  • Page 106 100%. When the grid voltage is lower than 100%, the inverter will limit the AC Output Current and the output power will begin to derate, as shown in Figure 8-3. Figure 8-3 CPS SCH100/125KTL-DO Derating Curve of Grid Voltage...

  • Page 107: Chapter 9 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 108 CHINT POWER SYSTEMS AMERICA CO., LTD. Address: 1297 N Plano Rd Richardson Texas 75081 Service Hotline: 855-584-7168 Email: AmericaSales@chintpower.com Website: www.chintpowersystems.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 B0 This manual is subject to change without prior notification.

This manual is also suitable for:

Sch100ktl-do/us-600Sch125ktl-do/us-600

Table of Contents