CHNT Power CPS SCA-T Series Installation And Operation Manual
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CHNT Power CPS SCA-T Series Installation And Operation Manual

Grid-tied pv inverter
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CPS SCA-T Series Grid-tied PV Inverter
CPS SCA30-36KTL-T/SA
Installation and Operation Manual
Version: 1.0
Date: 26/09/2019
Shanghai Chint Power Systems CO,.LTD

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Summary of Contents for CHNT Power CPS SCA-T Series

  • Page 1 CPS SCA-T Series Grid-tied PV Inverter CPS SCA30-36KTL-T/SA Installation and Operation Manual Version: 1.0 Date: 26/09/2019 Shanghai Chint Power Systems CO,.LTD...

  • Page 2: Table Of Contents

    CPS SCA- T Series Inverter Contents Forward Application Model Intended Audience Symbol Conventions 1 Safety Precautions 1.1 Personnel Safety 1.2 The PV Inverter Protection 1.3 Installation Safety 1.4 Electrical Connections 1.5 Operating and Commissioning 1.6 Maintenance 1.7 Additional Information 2 Overview of the Inverter 2.1 Functional Models 2.1.1 Function 2.1.2 Model Description...
  • Page 3 CPS SCA- T Series Inverter 4.5 Support-mounting the Inverter 5 Electrical Connections 5.1 Connecting Protection Ground (PGND) Cables 5.1.1 Preparation 5.1.2 Wiring Procedures 5.2 Connecting AC Output Cables 5.2.1 Preparation 5.2.2 Procedure of Connecting AC Cables 5.3 Connecting the PV Strings 5.3.1 Preparation 5.3.2 Procedures of Connecting the PV Strings 5.4 Connecting Communication Cables...

  • Page 4: Application Model

    CPS SCA- T Series Inverter Forward Dear User, Thank you so much for your choosing 30K-36K, the latest generation of grid-tied PV Strings inverter (hereinafter referred to as the inverter) designed and developed by CHINT. This user manual introduces the inverter in terms of its installation, electrical connections, operation, commissioning, maintenance, and troubleshooting.

  • Page 5: Symbol Conventions

    CPS SCA- T Series Inverter Symbol Conventions The following symbols will be frequently used in this User Manual as well as in the process of actual application. Symbol Description Indicates an imminently hazardous situation which, if not correctly DANGER followed, will result in serious injury or death. Indicates a potentially hazardous situation which, if not correctly WARNING followed, could result in serious injury or death.

  • Page 6: Safety Precautions

    CPS SCA- T Series Inverter 1 Safety Precautions Before beginning your journey, please read these safety precautions in User Manual carefully. 1.1 Personnel Safety a. The PV inverter must be installed, electronically connected, operated and maintained through specially trained technician; b.

  • Page 7: Electrical Connections

    CPS SCA- T Series Inverter 1.4 Electrical Connections Before installing the inverter, check all electrical ports to ensure no damage and no short circuit. Otherwise personal casualty and/or fire DANGER will occur. a. Input terminals of the PV inverter apply only to input terminals of PV String; do not connect any other DC source to the input terminals.

  • Page 8: Additional Information

    CPS SCA- T Series Inverter a. For personal safety, maintenance personnel must wear appropriate personal protective equipment (like insulation gloves and protective shoes) for the inverter maintenance. b. Place temporary warning signs or erect fences to prevent unauthorized access to the maintenance site.

  • Page 9: Overview Of The Inverter

    CPS SCA- T Series Inverter 2 Overview of the Inverter This chapter introduces the inverter and describes its functions, models, network application, appearance, dimensions, and working process etc. 2.1 Functional Models 2.1.1 Function This series of products is a transformerless grid-tied PV inverter which converts the direct current of the PV strings to grid-compliant three-phase current and feeds it into utility grid.

  • Page 10: Outline And Dimensions

    CPS SCA- T Series Inverter PV strings inverter AC Distribution Unit low-voltage power grid Figure 2.2 a low-voltage grid-tied PV power system This series inverters supports TN-S, TN-C, TN-C-S and TT power grids as shown in Figure 2.3. Inverter Inverter Inverter Inverter Figure 2.3 Power grids supported by this series inverters...
  • Page 11 CPS SCA- T Series Inverter Figure 2.5 shows the LED indicator area as follows: 1. PV Indicator 2. Grid Indicator 3. COM Indicator 4. Warning Indicator Figure 2.5 The front view of LED indicator area Reserved for installing rear panel Figure 2.6 The rear view of the inverter DC switch Vent valve...

  • Page 12: Working Modes

    CPS SCA- T Series Inverter 2.4 Working Modes There are three working modes of the inverter shown as follows: standby, operating, and shutdown. Table 2.1 shows the conditions of the inverter switching between working modes. Modes Description The PV inverter enters the standby mode when the input voltage of PV strings can enable auxiliary power supply to run, but cannot meet Standby the inverter operation requirements.

  • Page 13: Storage

    CPS SCA- T Series Inverter 3 Storage If you do not use the inverter immidiately, please follow the requirements below to keep the inverter for proper performance in futher use. • Do not unpack the inverter (put desiccant in the original packing box if the PV inverter is unpacked).

  • Page 14: Installation

    CPS SCA- T Series Inverter 4 Installation Do not mount the inverter in areas containing highly flammable DANGER materials or gases. The mounting location must be inaccessible to unrelated CAUTION personnel to avoid electrical shock burn. 4.1 Checking the Outer Packing a.

  • Page 15: Moving The Inverter

    CPS SCA- T Series Inverter 4.2 Moving the Inverter After checking the outer packing, move the PV inverter to the designated installation position, as shown in Figure 4.1. Figure 4.1 Moving the inverter To avoid damage or scratches of the inverter, please place the inverter horizontally on a piece of foam or cardboard, and make CAUTION sure all ports bear no heavy pressure.

  • Page 16: Compliance And Safety Symbols

    CPS SCA- T Series Inverter 4.3.2 Compliance and Safety Symbols Safety symbol Description Electrical shock! There are residual voltages in the PV inverter. It needs 5 minutes to finish discharge. The PV inverter must not be touched when in operation. Its enclosure and heat sinks are extremely hot.
  • Page 17 CPS SCA- T Series Inverter The inverter must be mounted in a well ventilated environment to ensure good heat dissipation. To ensure long service life, the inverter must not be exposed to direct solar irradiation, rain, or snow. It is recommended that the inverter be mounted in a sheltered place. If no shelter is available, build an awning, as shown in Figure 4.2.
  • Page 18 CPS SCA- T Series Inverter >600 >400 >400 >1000 >600 the front view the lateral view Figure 4.3 Installation space requirements (unit: mm) When installing multiple inverters, there are three suggested installation methods as follows in considering the installation space and heat dissipation. Please install them along the same line (as shown in Figure 4.4) if sufficient space is available;...

  • Page 19: Installation Mode Requirements

    CPS SCA- T Series Inverter 4.4.2 Installation Mode Requirements Mount the inverter upright or at a maximum back tilt of 15 degrees to facilitate heat dissipation. Some correct/wrong mounting modes, as shown in Figure 4.6 & 4.7. The correct installation mode upright Lean back Figures 4.6 The correct mounting modes...
  • Page 20 CPS SCA- T Series Inverter Step 2 Install the rear panel on the wall using M12 expansion screw after put on the flat washer, spring washer and nut respectively and the required torque is 42N.m. Mount the inverter on the rear panel and keep them aligned with each other.
  • Page 21 CPS SCA- T Series Inverter 5 Electrical Connections Before performing any electrical connections, ensure that both DC and AC Switches are OFF. Otherwise, fatal injury can occur due to DANGER the high voltage caused from AC and DC cables. Grounding the PV Strings requires below prerequisites: CAUTION 1.
  • Page 22 CPS SCA- T Series Inverter It is recommended that the ground cable be connected to a nearby ground position. For a system with multiple inverters connected in NOTE parallel, connect the ground points of all inverters to ensure equipotential connections. 5.1.2 Wiring Procedures Step 1 Remove an appropriate length of the insulation layer from the PGND cable using a wire Stripper;...
  • Page 23 CPS SCA- T Series Inverter 5.2 Connecting AC Output Cables 5.2.1 Preparation The AC power cable and AC terminals have been prepared with below requirements. AC power cable: outdoor multi copper-cores cables are recommended. Table 5.1 describes the specifications. Cross-sectional Recommended Cable type Area of single...
  • Page 24 CPS SCA- T Series Inverter 5.2.2 Procedure of Connecting AC Cables The AC wiring chamber is located on the right of the inverter. Prior to connecting AC output cables, you need to loosen the four lock screws using an allen key, disconnect the grounding wire using a cross screwdriver and remove the chamber cover.
  • Page 25 CPS SCA- T Series Inverter 5.3 Connecting the PV Strings PV Strings connection needs below prerequisites; otherwise, an DANGER electrical shock may occur. PV modules can generate electric energy when exposed to sunlight, which may create an electrical shock hazard. Therefore, make sure to shield them with opaque cloth before connecting the PV modules, Before connecting DC input power cables, ensure that the DC SWITCH on the inverter is OFF.
  • Page 26 CPS SCA- T Series Inverter 5.3.1 Preparation Figure below shows the DC input routes No. at the bottom of the inverter; there are totally 10 routes for 30K and 12 routes for 36K; if quantity of PV strings is less than inverter input routes, refer to below Table for the cable connection.
  • Page 27 CPS SCA- T Series Inverter Connectors of PV Strings: There are positive and negative DC input connectors used, as shown in Figure 5.7 and Figure 5.8. the insulation layer locking nut the insulation layer locking nut Figure 5.7 Positive connector compositions Figure 5.8 Negative connector compositions Positive and negative metal connectors are packed with positive and NOTE...
  • Page 28 CPS SCA- T Series Inverter 5.3. 2 Procedures of Connecting the PV Strings Step 1 Remove an appropriate length of the insulation layer from the positive and negative power cables by using a wire stripper, as shown in Figure 5.9. Positive metal connector Negative metal connector Figure 5.9 Removing insulation layer for DC cable (unit: mm)
  • Page 29 CPS SCA- T Series Inverter Step 4 Tighten the locking nuts on the positive and negative connectors by using a removal wrench, as shown in Figure 5.12. Figure 5.12 Locking connectors Step 5 Measure the voltage of every route Strings by using a multimeter. Ensure that the polarities of the DC input power cables are correct, as shown in Figure 5.13.
  • Page 30 CPS SCA- T Series Inverter 5.4 Connecting Communication Cables 5.4.1 Communication Mode Description There are multiple standard communication modes to implement communicating with the inverter: Bluetooth, WIFI, GPRS and RS485, which are introduced as follows. Bluetooth Module You can turn on the Bluetooth function of the mobile phone, and set parameters and monitor data of the inverter through the mobile APP ChintHome.
  • Page 31 CPS SCA- T Series Inverter RS485 communication mode (for single inverter) You can connect RS485 communications module to inverter for monitoring in two ways: connecting to single inverter and to multiple inverters. Figure 5.15 shows connection to single inverter to implement RS485 communications. RS485 OUT RS485 IN Inverter...
  • Page 32 CPS SCA- T Series Inverter 5.4.2 Connecting RS485 Communication Cables RS485 communication cable is located in the wiring chamber on the right of the inverter, as shown in Figure 5.17.. Figure 5.17 Interface of RS485 communication cable Step 1 Remove the wiring chamber on the right of inverter, and loosen the locking cap on 485 waterproof cable connector from the bottom of inverter.
  • Page 33 CPS SCA- T Series Inverter 5.4.3 Setting RS485 Communication Address Step 1 Input the official website of our company in your mobile phone browser and click APP to Download ChintHome, which is also available by scanning below QR code. And then login ChintHome and register an account for your inverter.
  • Page 34 CPS SCA- T Series Inverter 5.5 Installation Verification When the installation is completed, please check the inverter as Table 5.5 shown. 1. No other objects left on the PV inverter. 2. All screws are tightened. 3. The PV inverter is installed correctly and securely. 4.
  • Page 35 CPS SCA- T Series Inverter 6 System Operation 6.1 Powering ON the Inverter Step 1: Switch ON the AC circuit breaker. Shield the PV panels, then turn ON the DC circuit switch on the inverter, and take off the Step 2: shielding object.
  • Page 36 CPS SCA- T Series Inverter 7 User Interface 7.1 LED Indicator LED indicators include PV indicator, grid indicator, COM indicator and warning indicator, as shown in Figure 7.1. 1. PV Indicator 2. Grid Indicator 3. COM Indicator 4. Warning Indicator Figure 7.1 LED indicators LED indicator Status...
  • Page 37 CPS SCA- T Series Inverter...
  • Page 38 CPS SCA- T Series Inverter Table 7.2 The LEDs indicate the operating state of the inverter Remark LED ON LED OFF LED Blinking Keep the Status Users can view & set parameters of the inverter through inverter APP. NOTE For details about operation, please refer to APP User Manual, which is available for free from our official website.
  • Page 39 CPS SCA- T Series Inverter 7.2 App ChintHome Inverter parameters can be configured with APP throught bluetooth connection iPhone users can go to APP Store to search ChintHome to download APP. Android phone users can scan below QR code to download APP. CPS SCA30KTL-T/SA Inver ter List Inver ter List...
  • Page 40 CPS SCA- T Series Inverter Setting CPS SCA30KTL-T/SA History DC Output Generating capacity Line Mode Restar t inver ter after setting finish Maintenance Setting Basic Setting Voltage Current Date and time 2018-01-09 12:52:22 AC Output IP address Current A Voltage A ModBus Adress:1 Current power...
  • Page 41 CPS SCA- T Series Inverter 8 Maintenance Before maintaining and commissioning inverter and its peripheral WARNING distribution unit, switch off all the charged terminals of the inverter and wait at least 10 minutes after the inverter is powered off. 8.1 Routine Maintenance Maintain Maintenance Check Item...
  • Page 42 CPS SCA- T Series Inverter 8.2 The Inverter Troubleshooting The LED is solid on in case of inverter fault, refer to Table 8.2 for details. Alarm Name Causes Measures Recommended Grid 1. If the alarm occurs accidentally, possibly the Over Voltage power grid is abnormal accidentally.
  • Page 43 CPS SCA- T Series Inverter The insulation resistance against the ground at the 1. If the alarm occurs accidentally, possibly the input side external circuits are abnormal accidentally. The inverter Residual decreases automatically recovers to the normal operating status Current during the inverter after the fault is rectified.
  • Page 44 CPS SCA- T Series Inverter Remote monitor Communications If modem or other data logger is used, please reboot it; if displays zero outage it still does not work after rebooting, contact your dealer. power generation Remote monitor Output switch Check if DC switch is damaged, and if not, switch it to ON. displays no output tripping If it still doesn’t work, contact your dealer.
  • Page 45 CPS SCA- T Series Inverter 9 Quality Guarantee 9.1 Quality Terms 1) Where otherwise agreed to in a contract, quality warranty period of the inverter is 60 months 2) As for the PV inverter which is defective or damaged within its quality warranty period, CHINT shall repair or replace it for free.
  • Page 46 CPS SCA- T Series Inverter 10 Disposal of the Inverter The PV inverter and its packing case are made from environment-friendly materials. If the inverter service life has expired, do NOT discard it with household garbage; dispose the inverter in accordance with local environmental laws and regulations.
  • Page 47 CPS SCA- T Series Inverter 11 Technical Specifications Inverter Model Efficiency Max. Efficiency 98.00% 98.00% Input(PV) Max. Input power 36,000W 42,000W Max. Input Voltage 800V Max. Input Current 110A (33A/33A/22A/22A) 132A (33A/33A/33A/33A) Start Input Voltage/ Min. Operating Voltage 250V/200V MPPT Voltage Range 200V-750V MPPT Operating Voltage Range (Full-Load) 300V-680V...
  • Page 48 CPS SCA- T Series Inverter Protection DC switch Support Anti-islanding protection Support AC overcurrent protection Support AC short circuit protection Support DC reverse connection Support Surge Arrester DC Type II /AC Type II Insulation detection Support Leakage current protection Support Common Specs Topology Transformerless...
  • Page 49 CPS SCA- T Series Inverter The preceding technical specifications are subject to change without prior notice. It is recommended to add following devices: a 15A/1000VDC PV FUSE on the input terminal of every PV string, and an overcurrent protection device with specification more than 50A/400VAC on the output terminal.
  • Page 50 Tel：+86 21 3779 1222-6300 Fax：+86 21 3779 1222-6003 Postcode：201614 E-mail：service.cps@chint.com Add： Block 4, 3255 Sixian Road, SongJiang District, Shanghai, P.R. China...

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