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CPS SCH Series Installation And Operation Manual

Grid-tied pv inverter
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Installation and Operation
Manual
for CPS SCH Series Grid-tied PV Inverter
SCH250K-T-US-600
SCH200K-T-US-480
CHINT POWER SYSTEMS AMERICA CO., LTD.
Version: 2.0
Date: February 2025
Document Number: 9.0020.0912A0

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  • Page 1 Installation and Operation Manual for CPS SCH Series Grid-tied PV Inverter SCH250K-T-US-600 SCH200K-T-US-480 CHINT POWER SYSTEMS AMERICA CO., LTD. Version: 2.0 Date: February 2025 Document Number: 9.0020.0912A0...
  • Page 2 2 / 119...

  • Page 3: Table Of Contents

    Table of Contents Table of Contents Preface ..........................6 IMPORTANT SAFETY PRECAUTIONS ................7 1.1. Warnings and Symbols in This Document ..............7 1.2. Markings on the Product ..................... 8 1.3. Safety precautions of operating the PV inverter ............9 General Introduction ......................
  • Page 4 Table of Contents 4.4.3. AC Wiring ......................38 4.4.4. DC Wiring ......................40 4.5. Communication Cable Connection ................44 4.5.1. Communication Board ..................44 4.5.2. Communication Connection ................45 4.6. Cable Connection Notices for Joints and Seals ............47 Commissioning ........................ 50 5.1.
  • Page 5 Table of Contents 6.4.22. PID Parameter Area ..................90 6.5. More Menu ....................... 93 6.5.1. Basic Settings ....................93 6.5.2. Fault History ....................... 94 6.5.3. Running Log ...................... 95 6.5.4. Upgrade ......................95 6.5.5. Yield Statistics ....................95 6.5.6. Enhanced DC Monitoring ................... 96 Maintenance ........................

  • Page 6: Preface

    Please keep this user manual on hand for quick reference. Copyrights CPS reserves all rights in this manual. Any reproduction, disclosure or copy in whole or in part is forbidden without prior written authorization. CPS doesn’t accept any responsibilities whatsoever for potential errors or possible lack of information in this document.

  • Page 7: Important Safety Precautions

    Please read this user manual carefully before the installation and operation of this PV Inverter. CPS reserves the right to refuse warranty claims for equipment damage if users fail to install the equipment according to the instructions in this manual.

  • Page 8: Markings On The Product

    indique des informations supplémentaires importantes ou fournit des compétences ou des conseils qui peuvent être utilisés pour vous aider à résoudre un problème ou vous faire gagner du temps. 1.2. Markings on the Product Symbols Meanings WARNING: Risk of Electric Shock. ATTENTION: Risque de choc electrique.

  • Page 9: Safety Precautions Of Operating The Pv Inverter

    CSA Certification This inverter has passed CSA Certification. Certification CSA Cet onduleur a passé la certification CSA. Phase information of the inverter. Information de phase de l'onduleur. 1.3. Safety precautions of operating the PV inverter WARNING! All the installation and wiring connections should be performed only by qualified technical personnel.
  • Page 10 WARNING! The DC Switch is rated to break loads under normal operating conditions. However, a DC short circuit could be hazardous and the following procedures should be followed before turning OFF the DC Switch under fault conditions. If there is a fault and it is safe to access the inverter: ⚫...

  • Page 11: General Introduction

    2. General Introduction 2.1. Inverter for Grid-tied PV Systems The SCH200K-T-US-480 and SCH250K-T-US-600 series 3-phase string inverters are designed for use with an UNGROUNDED PV array in 1500Vdc PV grid-tied systems. The system is generally made up of PV modules, PV inverters, and AC power distribution equipment, as shown in Figure 2-1.
  • Page 12 Figure 2-3 Dimensions of inverter with centralized wire box Figure 2-4 Product appearance of inverter with Distributed wire box Figure 2-5 Product appearance of inverter with Centralized wire box 12 / 119...

  • Page 13: Led Indicators And Meaning

    2.3. LED Indicators and Meaning The inverters have four LED lights on the front of the units. LED display of the inverter is shown as follows: Figure 2-6 LED Indicator Description of LED light indicators are shown in Table 2-1. LED Light Name Status...

  • Page 14: Schematic Diagram And Circuit Design

    2.4. Schematic Diagram and Circuit Design The electrical schematic diagrams of the 200kW-480V and 250kW-600V inverters are as shown in figures below. Figure 2-7 Schematic Diagram of inverter with Distributed wirebox Figure 2-8 Schematic Diagram of inverter with Centralized wirebox The DC input from PV source circuits passes through the surge protection device, DC EMI wave filter to bus capacitance.

  • Page 15: Product Protection Functions

    ⚫ Flexible communication ○ Supports standard Modbus RS485, SunSpec Modbus, and HTTPS/XML communications via FlexOM gateway card to ensure compatiblity with third party monitoring and control systems. ⚫ Wide DC input voltage range ○ 860-1450Vdc for SCH250K-T-US-600 and SCH200K-T-US-480 ○ Max DC input voltage: 1500V ⚫...

  • Page 16: Smart Inverter Functions And Default Activation

    2.7. Smart Inverter Functions and Default Activation Function IEEE1547-2018 Rule 21 ISO-NE Anti-islanding Enabled Enabled Enabled Low/High Voltage Ride-Though Enabled Enabled Disabled Low/High Frequency Ride-Though Enabled Enabled Enabled Dynamic Volt/VAR Operation Enabled Enabled Disabled Ramp Rate Enabled Enabled Enabled Fixed Power Factor Disabled Disabled Disabled...

  • Page 17: Mechanical Installation

    3. Mechanical Installation 3.1. Storage before Unpacking If the inverter is not immediately installed upon arrival, the following requirements should be met when storing the inverter: ⚫ Do not remove the outer packing of the inverter. ⚫ Store it in a clean, dry place to prevent dust and moisture intrusion. ⚫...

  • Page 18: Installation Precautions

    Item names Notes Main enclosure Inverter powerhead Distributed wire box The wirebox will vary depending on the model ordered Centrialized wire box Mounting bracket For hanging the main enclosure and wire box Accessory kit Contain items A-M listed below 6-pin terminal For communication connections 3-pin terminal M12 Handle...

  • Page 19: Installation Requirements

    ⚫ Do not install the inverter below water pipes, air vents, and other locations prone to condensation. ake sure the installation condition doesn’t exceed the temperature limits specified for ⚫ the inverter to prevent undesirable power loss. ⚫ Do not install the inverter near an electromagnetic source which can compromise the normal operation of electronic equipment.

  • Page 20: Installation Space Requirements

    Figure 3-3 Installation modes NOTICE! Make sure that the mounting structure (rack, roof, etc.) is rated to bear the total weight of the inverter, which is 281 lbs (127.5 kg). 3.4.3. Installation Space Requirements The distances between the inverters or the surrounding objects should meet the following conditions: ⚫...
  • Page 21 ⚫ When installing under a structure to avoid direct sunlight, rain, and snow, the spacing in Figure 3-5 must be met. Figure 3-5 Space requirement for installing under shed ⚫ Install vertical support columns and horizontal installation structure and inverter according to the dimensions shown below.
  • Page 22 ⚫ When installing multiple inverters, the spacing requirements are shown in the figure below. An air baffle can be used between the inverters to allow a minimum distance of 19.68in. (500mm). Figure 3-7a Recommended installation mode and space for multiple inverters The recommended air baffle material is Aluminum.
  • Page 23 ⚫ For parallel installation, if no air baffle is used, ensure a minimum distance of 1500mm between the inverters to allow effective dispersion of the hot air. However, parallel installation without an air baffle is not recommended. Figure 3-8 Space requirement for side-by-side installation ⚫...

  • Page 24: Installation Procedures

    3.5. Installation Procedures CAUTION! ⚫ The main enclosure is approx. 175 lbs (179.5 kg), the wire box is approx. 106 lbs (48 kg). The total weight of the inverter is approx. 281 lbs (127.5 kg). ⚫ Please ensure the mounting is properly installed before hanging the inverter on the bracket.

  • Page 25: Install Main Enclosure And Wire Box

    Figure 3-11 Install mounting bracket 3.5.2. Install Main Enclosure and Wire Box 1. Unscrew the screws to remove the cover plate from the side of the main enclosure and wire box. Tool required: No.2 Phillips head screwdriver. Main Enclosure Wire Box Figure 3-12 Remove cover plate of main enclousre and wire box NOTICE! ⚫...
  • Page 26 Figure 3-13 Machine mounting b) Manual lifting: Install four M12 handles into the screw holes as indicated in blue in Figure 3-14 . Four people are needed to properly lift the inverter by the handle positions, and mount the inverter onto the mounting bracket. Figure 3-14 Manual Mounting 3.
  • Page 27 Figure 3-15 Hang main enclosure and wire box 4. Slide the main enclosure and wire box to engage them tightly. Note: Do not place the equipment at either end of the bracket to avoid uneven force distribution, which could cause the equipment to slip or pose safety risks. Figure 3-16 Engage main enclosure and wire box 5.
  • Page 28 Figure 3-17 Tighten main encloure and wire-box 6. Tighten the top of the inverter onto the mounting bracket, using two M8x30 screws. Tool: No.2 Phillips head screwdrive; Torque: 6 N.m, 53 in-lbs. Figure 3-18 Tighten the top of the inverter 28 / 119...
  • Page 29 7. Tighten the bottom of inverter onto the installation structure, using M10 nuts, M10 spring washers, M10 flat washers, and M10x50 screws. Tool: No.2 Phillips head screwdrvier; Torque: 6 N.m, 53 in-lbs. Figure 3-19 Tighten the bottom of the inverter 8.

  • Page 30: Cable Connection

    4. Cable Connection 4.1. Cable Specification Cable Type Cross-sectional area DC cable Use 90°C copper #14 - #8 AWG* wire only (Distributed Wire box) DC cable Use 90°C Cu/AI ≤ 600kcmil, up to 2 terminals* (Centralized Wire wire box) PE cable Outdoor copper ≥...

  • Page 31: Tools Required And Torque Values

    4.2. Tools Required and Torque Values Before installing any electrical cables and conductors, please see the tools required and torque value tables so that proper tools are used and correct torques are applied to avoid the damage of any components or cables. No.

  • Page 32: Internal Structure And Cable Connection

    4.3. Internal Structure and Cable Connection In the following section, you will find the internal structure of the inverter, including the connection interfaces, connection points, etc. 4.3.1. External Connection Interface of Wire Box Figure 4-1 Connection interfaces (Distributed wire box) 32 / 119...
  • Page 33 Figure 4-2 Connection interfaces (Centralized wire box) Names Distributed wire box: Knock-outs for DC input (2 inch trade size) Centralized wire box: Knock-outs for DC input (3 inch trade size) Knock-out for AC output (3 inch trade size) Knock-out for communication output (3/4 inch trade size) External protecting earthing (PE) connection point Table 4-3 Connection interfaces (Distributed and Centralized Wire-box Version) 33 / 119...

  • Page 34: Internal Connection Points Of Wire Box

    4.3.2. Internal Connection Points of Wire Box Figure 4-3 Internal Connection Points (Distributed wire box) Names AC grounding bar Neutral terminal (optional) DC grounding bar PV copper row- /copper bar- PV copper row+ /copper bar+ Communication board, please refer to 4.5 Communication Cable Connection AC output terminal block (L1, L2, and L3) Table 4-4 Internal Connection Points Description (Distributed wire Box) 34 / 119...
  • Page 35 Figure 4-4 Internal Connection Points (Centralized wire box) Names AC grounding bar Neutral terminal (optional) DC grounding bar PV copper row- /copper bar- PV copper row+ /copper bar+ Communication board, please refer to 4.5 Communication Cable Connection AC output terminal block (L1, L2, and L3) Table 4-5 Internal Connection Points Description (Centralized wire Box) 35 / 119...

  • Page 36: Cable Connection

    4.4. Cable connection 4.4.1. Open Front Cover of Wire Box CAUTION! Open the DC switch on the distributed wire box, or on the external DC combiners (for centralized wire box) before removing the wire box cover. 1. Use a 5mm hex socket wrench to loosen the five screws on the wire box. Note: There are four spare screws on the side of the wire box for the front cover.

  • Page 37: Grounding

    4.4.2. Grounding Connect the ground cable as shown in the following figures (in green boxes below). Bond the inverter to local grounding point – drive ground rod or equivalent. 4.4.2.1. Grounding for Distributed Wire Box The internal and external grounding connections of distributed wire box are shown in Figure 4-7.

  • Page 38: Ac Wiring

    4.4.2.2. Grounding for Centralized Wire Box The internal and external grounding connections of centralized wire box are shown in Figure 4-9. Figure 4-9 Ground Cable Connection (Centralized Wire-box) The dimensions of internal DC ground terminal and AC ground terminal are as shown in Figure 4-10: ...
  • Page 39 4. Remove an approprite length of the jacket and insulation layer from the AC output cable. Insert the exposed core wires into crimping area of the lug, crimp them using hydraulic crimper, then wrap the wire crimp area with heat shrink tubing or insulation tape. 5.

  • Page 40: Dc Wiring

    The SCH250K-T-US-600 inverter operates at 600VAC/Wye output, while the SCH200K-T- US-480 inverter operates at 480VAC/Wye output. If another voltage or configuration is required, a transformer may be necesarry. The following diagram shows examples of allowable transformer winding configurations. Figure 4-12 Transformer winding configurations NOTICE! ⚫...
  • Page 41 ⚫ Each DC input from the PV strings requires fuse protection. ⚫ The rated voltage of the fuse should be 1500VDC. ⚫ The rated current of the fuse is generally 1.56 × short circuit current from the PV strings, rounded up to the next available fuse size. NEC2017 alternate calculation method may yield a smaller fuse.
  • Page 42 ⚫ Confirm the DC configuration and ensure that the maximum open circuit voltage of the PV modules is lower than 1500VDC under any conditions; ⚫ Confirm that the PV strings for the MPPT of the inverter are of the same type and specification before performing connection.
  • Page 43 Figure 4-16 DC wiring of distributed wire box b) For centralized wire box: connect the DC cables to the DC input bar as shown in Figure 4-15. Figure 4-16 DC wiring of centralized wire box 43 / 119...

  • Page 44: Communication Cable Connection

    4.5. Communication Cable Connection The inverters support industry standard Modbus RS485 and CAN communication. Below is a description of the components of the communication card and its location in the inverter wire boxes. 4.5.1. Communication Board The communication board of the distributed and centralized wire box is the same. The following illustration uses the communication board of distributed wire box as an example.

  • Page 45: Communication Connection

    S150(set CAN OFF-Disable the terminal resistor terminal resistor) ON-Enable the terminal resistor S2(set RS485 OFF-Disable the terminal resistor terminal resistor) ON-Enable the terminal resistor Select different communication DIP switch modes via DIP switches. For (S5/S7/S9/S6/S8) specific configurations, please see 4.5.2.1 DIP Switch Configuration Table 4-7 Communication board Interfaces 4.5.2.
  • Page 46 Figure 4-18 Communication connection 4.5.2.3. RS485 and CAN Network Connection When the inverters are monitored via the RS485 or CAN communication, a unique RS485 or CAN address for each inverter can be set up through the APP interface. Up to 32 inverters can be connected in a serial fashion in the RS485 or CAN communication network.

  • Page 47: Cable Connection Notices For Joints And Seals

    WARNING! ⚫ Make sure all DC and AC power has been disconnected before opening the wire box and ensure that hazardous high voltage and power has been discharged to avoid risk of electric shock. ⚫ Wait at least 5 minutes before opening the wire box. After completing all the wiring steps, re-install the front cover and fasten the five screws on the front cover.
  • Page 48 Figure 4-21 Cable must be vertical ⚫ After the cables are routed through the conduit fittings, fireproof putties or spray foam sealant shall be applied to prevent entering water vapor. Figure 4-22 Apply fireproof putties ⚫ After tightening the conduit fitting, watertight sealants shall be applied on its inner surface and outer surface to avoid loosening or prevent water from entering.
  • Page 49 Figure 4-23 Apply watertight sealants ⚫ Before and after tightening the fastening head, check carefully to ensure the watertight gasket is in good condition, i.e. its surface is uniform and unbroken. Figure 4-24 Check watertight gasket 49 / 119...

  • Page 50: Commissioning

    5. Commissioning WARNING! Please follow the guidelines below before performing any on-grid operation to eliminate possible safety hazards. 5.1. Pre-commissioning Checks 5.1.1. Mechanical Installation ⚫ Make sure all the mounting brackets are secure. ⚫ Make sure all the screws have been tightened to the specified torque values. 5.1.2.

  • Page 51: App Interface And Setting

    6. APP Interface and Setting 6.1. APP Download Users can download the Matricloud app of iOS version at Apple store or Android version in Google store or scan the QR code (Support Android 8.0 and iOS 13.0 or later). 6.2. App Quick Connection and Configuration NOTICE! The mobile phone should remain within a visible distance of 15 ft (5 m) from the inverter;...
  • Page 52 Open MatriCloud App, click “ evice ccess”. Figure -2 evice ccess Click “Bluetooth Connect”. Note: NFC function is now unavailable. Figure - Bluetooth Connect 52 / 119...
  • Page 53 Click device number (Last 8 digits of SN on the COM module label) to access main interface. Figure - Choose Communication odule 53 / 119...

  • Page 54: Home Menu

    6.3. Home Menu After successful connection, the main interface will be displayed as follows. Figure -5 Home menu ⚫ The Status shows the four modes of the inverter: ○ Standby: Previous state of running mode, the machine will perform a series of self- checks.
  • Page 55 Figure - System state If there is a fault, the fault reminder will appear on the home page, click “View” to check ⚫ the detail. Figure -7 View fault 55 / 119...
  • Page 56 ⚫ In the section of general parameters, there are five subcategories as follows: Figure -8 eneral parameters 56 / 119...

  • Page 57: Settings Menu

    6.4. Settings Menu Click the Settings icon to enter the setting interface (If password needed, enter “1111”). hen it’s possible to access the following sub-menus on the setting interface. Figure -9 Settings "Settings" page includes two parts: "Input Register Map" and "Hold Register Map". ⚫...
  • Page 58 ○ PID_Parameter Area Note: These hold register parameters are set by default at the factory, user cannot modify without authorization. If you need to modify them, please contact CPS Customer Service. Figure -10 Input register map parameters 58 / 119...
  • Page 59 Figure -11 Hold register map parameters 59 / 119...

  • Page 60: Common Info

    6.4.1. Common Info In Common Info, you can see the device information, LCD/pro/minor version, number of input/hold register parameters, SN/model, as well as hold register address information,etc. Figure -12 Common Info 60 / 119...

  • Page 61: Power Grid Status Information Area

    6.4.2. Power Grid Status Information Area Power grid status information area displays the information about grid voltage, grid phase, etc. Figure -1 Power grid status information area 61 / 119...

  • Page 62: Output Status Information Area

    6.4.3. Output Status Information Area Output status information area displays the information about the current output. Figure -1 utput status information area 62 / 119...

  • Page 63: Input Status Information Area

    6.4.4. Input Status Information Area Input status information area displays the information about the current input. Figure -15 Input status information area 63 / 119...

  • Page 64: Fault Status Information Area

    6.4.5. Fault Status Information Area Fault status information area displays the fault name and description. Figure -1 Fault status information area 64 / 119...

  • Page 65: Pv Status Information Area

    6.4.6. PV Status Information Area PV status information area display the detailed information of PV. Figure -17 PV status information area 65 / 119...

  • Page 66: Arc Information Area

    6.4.7. ARC Information Area ARC information area displays the information about arcs, such as board status, arc result, self check result, and the calculation results (score) of ARC detection for different channels. Figure -18 C status information area 66 / 119...

  • Page 67: Lcd Information Area

    6.4.8. LCD Information Area LCD information area display the information as shown in the figure below. Figure -19 LC infomration area 67 / 119...

  • Page 68: Grid Voltage Protection Parameters

    Note: These parameters are set by default at the factory, user cannot modify without authorization. If you need to modify them, please contact CPS Customer Service. Figure -20 rid voltage protection parameters...

  • Page 69: Grid Frequency Protection Parameters

    Threshold Level 2 min. GridVoltMin2 {0,100.00} 50.00 50.00 50.00 grid voltage Trip Time Level 2 max. VoltMinTripT2 {0, 655.00} 2.00 2.00 1.10 grid voltage Threshold Level 3 min. GridVoltMin3 {0,100.00} 50.00 50.00 50.00 grid voltage Trip time level 3 max. VoltMinTripT3 {0, 655.00} 2.00...
  • Page 70 Figure -21 rid frequency protection parameters Grid Grid code Grid code Parameter name Description Range IEEE- code Unit RULE- 1547_2018 ISO-NE Grid Over Frequency Protection Threshold Level 1 max. grid {50.00, GridFrqMax1 51.20 51.20 51.20 frequency 60.00} Trip time of Level 1 max. FrqMaxTripT1 300.00 300.00...

  • Page 71: Power Scheduling Parameters

    Frequency recover Grid frequency recover {50.00, FrqMaxRecovery 50.30 50.30 50.30 max. value 60.00} Grid frequency recover min. FrqMinRecovery {40, 50} 48.60 48.60 48.60 value FrqRecoveryT Grid frequency recover time {0, 1310} 300.00 300.00 300.00 Secs able -2 rid frequency protection parameters description 6.4.11.
  • Page 72 Grid code Grid code Grid code Parameter name Description Range IEEE-1547 RULE-21 ISO-NE {Reactive power control, prohibited, Local Local Reactive Reactive Reactive EEPROM Q-value CtrlModeReactiveP EEPROM power power power control control, Local EEPROM Q-value control, control, mode PF value control, PF(P) control prohibited prohibited...

  • Page 73: High/Low Ride-Throughparameters

    6.4.12. High/Low Ride-ThroughParameters The high/low penetration parameters interface is used to set if enabling/disabling HVRT (High voltage ride through) and LVRT (Low voltage ride through) protection and set HVRT & LVRT parameter values. Figure -2 High/low ride-through parameters Grid code Grid code Grid code...

  • Page 74: Active Power Regulation Control

    able - High/low ride-through parameters description 6.4.13. Active Power Regulation Control The Active Power Regulation control menu is used to set the active power derating parameters, including Over Voltage Derating, Over Frequency Derating, etc. Figure -2 ctive power regulation control You can see the Curve of over voltage derating in figure 6-9 and Curve of over frequency derating in figure below.
  • Page 75 Figure -2 curve of over frequency derating Grid Grid Grid code Parameter name Description Range code code Unit IEEE- RULE-21 ISO-NE 1547 Enable disable over {Prohibited, OvrFreqEn Enable Enable Enable frequency derating Enable} Enable disable under {Prohibited, UndeFreqEn Enable Enable Enable frequency derating Enable}...

  • Page 76: Reactive Power Reduction Parameter Area

    6.4.14. Reactive Power Reduction Parameter Area The Reactive Power Reduction Parameter Area interface is used to set the Grid reactive power derating parameters including PF parameters and Qu parameters, etc. Figure -27 eactive power reduction parameter area PF Set: Set the PF value. ote: Change the reactive power by adjusting the power factor. PF(P) Curve：PF curve mode.
  • Page 77 ⚫ Q(U) Curve: Q(U) curve mode. Note: The reactive compensation changes according to the grid voltage change, as shown in Figure 6- Figure -29 Q( ) Curve ⚫ Q(P) Curve: Q(P) curve mode. ote: he reactive compensation changes according to the active power change, as shown in Figure - Figure - 0 Q(P) Curve For the detailed parameters, please see the parameter table listed as below.
  • Page 78 Grid Grid Grid code Parameter name Description Range code code Unit IEEE- RULE-21 ISO-NE 1547 Enable or disable Q(U) curve Vref {Prohibited, Prohibite Prohibite Prohibite QUCurveVRefEn automatic Enable} adjustment Power PF(P) {0.00, PFpcurveP1 50.00 50.00 50.00 point 1 110.00} {-1.000, 0.800};...

  • Page 79: Switch Commands

    {-60.00, QpCurveQ3 Q(P) curve Q3 -44.00 -60.00 -44.00 60.00} QpCurveOpenLoopRespTim Q(P) curve open- {0.1, 10.00 10.00 10.00 loop response time 1000.0} Q(U) curve {95.00, QuCurveVref Reference Voltage 100.00 100.00 100.00 105.00} (Vref) Q(U) curve Vref {0.0, QuCurveVrefTime 50.00 50.00 50.00 adjustment time 6000.0} Q(U) curve open-...

  • Page 80: Others Parameters Area

    Grid Grid Grid code Parameter name Description Range code code Unit IEEE- RULE-21 ISO-NE 1547 {Prohibited, active islanding, passive Enable or disable islanding, active active active IslandProtectEn islanding both active islanding islanding islanding protection and passive islanding enabled} Enable or disable {Prohibited, SoftComdOffEn Enable...
  • Page 81 Figure - 2 thers parameters 81 / 119...
  • Page 82 Grid Grid Grid code Parameter name Description Range code code Unit IEEE- RULE-21 ISO-NE 1547 Enable or disable steady {Prohibited, SteadyStateGFCIEn Enable Enable Enable state GFCI Enable} Enable or disable trends {Prohibited, TrendsStateGFCIEn Prohibited Prohibited Prohibited state GFCI Enable} {Prohibited, ISOEn Enable or disable ISO Enable...

  • Page 83: Arc Parameters Area

    6.4.17. ARC Parameters Area Arc parameters area displays the parameter about total number of ARC boards, current ARC serial number, ARC upgrade status, ARC protocol version, score judgment threshold, detection time, and arc detection time of different channels. NOTE: ARC function applies to Distributed wirebox only.
  • Page 84 Grid code Grid Parameter Grid code Description Range IEEE- code Unit name ISO-NE 1547 RULE-21 Self-check {Prohibited, Self-check Prohibited Prohibited Prohibited command Enable} Enable or disable {Prohibited, Ch1 enable Prohibited Prohibited Prohibited Channel 1 Enable} Channel 1 score Ch1 threshold {0,60000} judgment threshold Ch1 detection...

  • Page 85: Control Commands Group

    IV curve scanning/ Battery wake-up/ Overload fault clearing commands, as shown below. Note: It is recommended to operate in the presence of CPS Customer Service or technical personnel. It is not recommended that customers operate privately by themselves. Figure -...

  • Page 86: Inverter Basic Information Area

    6.4.19. Inverter Basic Information Area Inverter basic information area display the basic information of the inverter and system. Figure - 5 Inverter basic information parameters Parameter Name Description MachineVersion Machine Version DSPFWVersion DspApp Software Version DSPFWChkSum DspApp Software Code Checksum BootFWVersion DspBoot Software Version BootFWCodeChkSum...

  • Page 87: Lcd Systemconfigdata 1

    6.4.20. LCD SystemConfigData 1 The LCD system configuration data 1 group includes parameters for LCD system parameters. Figure - LC SystemConfig ata_1 87 / 119...
  • Page 88 Parameter Name Description System time Configure system time LCD 485 address Rs485 interface of LcdLess (for third-party monitoring, e.g., Ethernet card) External 485 Baud Rate: 0: 2400 1: 4800 LCD 485 baudrate 2: 9600 (default) 3: 19200 4: 38400 LcdlessBoot LcdlessBoot Firmware Checksum LcdlessApp LcdlessApp Firmware Checksum...

  • Page 89: Lcd Systemconfigdata 2

    6.4.21. LCD SystemConfigData 2 The LCD System configure Data 2 group includes parameter for IP, DNS, Netmask ,CAN, gateway, etc. Figure - 7 LC SystemConfig ata_2 Parameter Name Description HOSTName Host name MAC_En Enable or disable MAC MAC address MAC Address DHCP_EN Enable or disable DHCP IP Address...

  • Page 90: Pid Parameter Area

    6.4.22. PID Parameter Area The PID parameter area group includes parameter for tripping protection, PID function and other features. PID (Potential Induced Degradation) refers to the power degradation of solar cells caused by prolonged exposure to external voltage. The tripping PID board mitigates and repairs this issue by adjusting the voltage between the BUS and ground.
  • Page 91 Parameter Name Description Trip Protection Function Enable or Disable trip protection function, users can also enable or disable the trip protection through “ ore > etachment Board onitoring”, please refer to EnableTripFunction section 6.5.6 Detachment Board Monitoring. Perform tripping detection: ...
  • Page 92 GridVoltUnbalanceMAX Maximum voltage unbalance of mains setting able -1 PI parameters descripiton To ensure the PID function operates correctly, the following points must be noted: ⚫ When using Wye (Utility) transformer configuration with the N line connected to PE, the PID function will be disabled, even if enabled.

  • Page 93: More Menu

    6.5. More Menu Click “More” icon and you can see the following parameters: ⚫ Basic Settings ⚫ Fault History ⚫ Operate History ⚫ Running log ⚫ Upgrade ⚫ Yield Statistics ⚫ Detachment board monitoring ⚫ NFC write (Not available) Figure 6-40 More Menu 6.5.1.

  • Page 94: Fault History

    Figure - 1 Basic Settings 6.5.2. Fault History Fault History page lists all the current and historical faults, click fault to view the detail. Figure - 2 Fault History 94 / 119...

  • Page 95: Running Log

    6.5.3. Running Log The log of system running. Figure - unning log 6.5.4. Upgrade If the inverter firmware version needs to be updated, please contact CPS Customer Service. 6.5.5. Yield Statistics Figure - Yield Statistics 95 / 119...

  • Page 96: Enhanced Dc Monitoring

    6.5.6. Enhanced DC Monitoring Users can enable the tripping function through the button located in the upper right corner. After completing the pre-operation checks and ensuring everything is correct, the tripping module can operate normally when AC or DC power is supplied to the inverter. ⚫...
  • Page 97 ⚫ Trip Monitoring Settings: When the trip protection function is enabled, users can configure the protection thresholds by selecting the category of the threshold and adjusting the values within the allowable range. Note: Users can also configure these parameters through hold register parameter group. For more details, please refer to 6.4.22 PID Parameter Area.
  • Page 98 Figure - rip monitoring settings ⚫ Current and voltage value of PV strings. 98 / 119...
  • Page 99 Figure - 7 rip monitoring PV information 99 / 119...

  • Page 100: Maintenance

    7. Maintenance 7.1. Check Electrical Connections Check all the cable connections as a regular maintenance inspection every 6-12 months. Check the cable connections. If loose, please tighten all the cables referring to 4.2 “ ools ⚫ Required and Torque Values”. ⚫...
  • Page 101 Figure 7-2 Remove fan tray screws on the bottom 2. Pull the fan upwards and downwards to remove it from the main enclosure. Figure 7-3 Remove the fan tray from inverter 3. Rotate the locking nut to pull out the plug terminal in the direction shown in the figure below.
  • Page 102 4. Use a No. 2 Phillips head screwdriver to remove the foure screws on the rear of fan tray. Figure 7-5 Take off the screws of fan tray 5. Use a No.2 Phillips head screwdriver to remove the 12 screws of cooling fans. Figure 7-6 Remove the screws of cooling fans 6.

  • Page 103: Replace The Inverter

    7.4. Replace the Inverter NOTICE! ⚫ Please disconnect the AC and DC power when replacing the main enclosure. Replace the inverter according to the following steps: 1. Remove the cover plates from the top of inverter. Tool: No.2 Phillps head screwdriver. Figure 7-7 Remove cover plates 2.
  • Page 104 3. Remove two screws on the top on the mounting bracket. Figure 7-9 Remove top screws 4. Use a 13 mm ratchet hex socket wrench to remove the four nuts between the main enclosure and the wire box. Pull out the main enclosure from the mounting bracket. Figure 7-10 nuts between the main enclosure and the wire box 104 / 119...
  • Page 105 5. Move the main enclosure and wire box out of the installation structure. Figure 7-11 Move out the main enclosure and wire box 6. Re-install the cover plates on the side of the mian enclosure and wire box. Figuure 7-12 Re-install the cover plates 7.

  • Page 106: Troubleshooting

    1. Observe for 5 minutes and see whether the alarm will be Faults eliminated automatically; 2. Switch off 3-phase working power supply and then reboot the system; 3. Contact CPS Customer Service. Definition: Cooling fan failure by visual check 106 / 119...
  • Page 107 Check for foreign objects on fan blades; ⚫ Switch off 3-phase work power supply and then reboot the system; ⚫ Contact CPS Customer Service. Recommended solutions: ⚫ Observe for 5 minutes and see whether the alarm will be eliminated automatically;...
  • Page 108 ⚫ Observe for 30 minutes and see whether the alarm will be eliminated automatically; ⚫ Contact CPS Customer Service. Protect0170 ⚫ If the inverter can start up, then recalibrate. (The sampling offset of ⚫ If the inverter always report this alarm and cannot DCI) start up, then replace inverter.
  • Page 109 ⚫ Add one PV string at a time, and start up inverter to see if alarm occurs. ⚫ If there is no alarm, turn OFF AC switches to disconnect from Grid and add in the next string. Startup inverter again. ⚫...
  • Page 110 ⚫ If inverter cannot clear fault, replace inverter. ⚫ Restart inverter by cycling both AC and DC switches. ⚫ Wait for 1 minute between OFF and ON for all energy Fault0740 to discharge. (CPLD Fault) ⚫ If inverter cannot clear fault, replace Control Board or inverter.

  • Page 111: Technical Data

    9. Technical Data 9.1. Datasheet Model Name SCH200K-T-US-480 SCH250K-T-US-600 DC Input – UNGROUNDED ARRAY Max. PV Power 340kW 425kW Max. DC Input Voltage 1500Vdc Operating Input Voltage 860-1450Vdc 860-1450Vdc Range MPPT Voltage Range 900-1300Vdc 900-1300Vdc Start-up DC Input Voltage 900V Nominal Nominal Input 1100V Voltage...
  • Page 112 0-95%, non-condensing Operating Altitude 6562ft / 2000m Display and Communication User Interface and Display LED Indicators, Bluetooth + APP Inverter Monitoring Modbus RS485 Site Level Monitoring FlexOM Gateway (1 per 32 inverters) Modbus Data Mapping SunSpec / CPS 112 / 119...
  • Page 113 Remote Diagnostics / FW Standard / (with FlexOM Gateway) Upgrade Functions Mechanical Data Power head: 28.46x32.99x13.98inch (723x840x355mm) Dimensions (WxHxD) (mm) Wiring box: 23.11 x32.99x13.98inch (587x840x355mm) Power head: 175.27 lbs (79.5kg) Weight (kg) Wiring box: 105.82 lbs (48kg) Mounting/Installation Angle Vertical installation Safety CSA-C22.2 No.
  • Page 114 Po/Pn（%） 100% 1300 1450 PV Voltage (V) Figure 9-2 DC input derating curve for SCH200K-T-US-480 2. External AC ground fault detection may be required for Floating AC systems. 3. Inverter AC output voltage operating range is 0.88 Un-1.1 UnVAC (Un: standard grid rated value).
  • Page 115 Po/Pn（%） 100% 42 45 Tamb(°C) Figure 9-4 Derating curve with high temperature 115 / 119...

  • Page 116: Measurement Tolerance

    ±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 as below: ⚫ Voltage tolerances: ±1% ⚫ Current tolerances: ±2% ⚫...

  • Page 117: Limited Warranty

    The warranty policy for this product is specified in the contract; otherwise, the standard warranty is five (5) years. For service, Chint Power Systems America will provide technical support. For warranty terms, please refer to the CPS America standard warranty policy in place at time of purchase. 117 / 119...

  • Page 118: Recycling

    This product cannot be disposed of as a household waste. When the product has reached the end of its service life, dispose of it in accordance with the local applicable electrical waste regulations and standards. For more information, contact CPS Customer Service. 118 / 119...
  • Page 119 Contact Information CHINT POWER SYSTEMS AMERICA CO., LTD. Address: 1380 Presidential Drive, Richardson, TX 75081 Service Hotline: 855-584-7168 Email: AmericaSales@chintpower.com Website: www.chintpowersystems.com Shanghai CHINT Power Systems Co., Ltd. Headquarters: No. 5999, Guangfulin Road, Songjiang District, 201616 Shanghai, P. R. China Tele: +86 -21 -3779 1222 -6300 Fax: +86 -21 -3779 1222 -6001 The above information is subject to change without prior notice.

This manual is also suitable for:

Sch250k-t-us-600Sch200k-t-us-480

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