CPS SCA50KTL-DO/US-480 Installation And Operation Manual Download Page 120

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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.

Use a No. 2 Phillips head screwdriver to remove the 10 screws

on the fan tray (6 screws on the upper fan tray, and 4 screws on

the lower fan tray).

Disconnect the waterproof cable connector from the cooling fan.

Use a No. 2 Phillips head screwdriver to remove the screws.

Each fan is attached to the fan tray with 4 screws.

Attached the new cooling fans on the fan tray and screw into

place. Fasten the cable on the fan tray with cable ties.

Torque value: 0.8-1N.m (7.1-8.91in-lbs)

Install the assembled fan tray back on the inverter and secure

with the original screws.

Torque value: 1.2N.m (10.6in-lbs)

Figure 7-1 Replacing Cooling Fans

Summary of Contents for 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 2: ......

Page 3: ... Description 1 0 N A Aug 2016 Initial Release 2 0 3 Sep 2016 H4 Wirebox Operating Mode 2 1 3 Feb 2017 H4 Termination AC Terminal 2 2 3 5 7 8 Sept 2017 AC Terminal Parameters Trouble Shooting Accessories 3 0 3 5 6 10 Feb 2018 Increased kVA Ratings ...

Page 4: ...urge Suppression 11 2 9 DC Arc fault Protection 11 3 Installation 12 3 1 Recommendations before Installation 15 3 2 Mechanical Installation 17 3 3 Electrical Installation 31 4 User Interface 67 4 1 Description of LCD Panel 67 4 2 Operation State 69 4 3 Interface Types 70 4 4 Main Menu 72 4 4 1 Measurement Data 73 4 4 2 Setting 74 4 4 3 Power ON OFF 99 4 4 4 History Record 100 4 4 5 Device Informat...

Page 5: ...utdown and Troubleshooting 118 8 1 LED Fault and Troubleshooting 118 8 2 LCD Fault and Troubleshooting 119 9 Accessories 126 9 1 Fuse Bypass Terminals 126 9 1 1 Bypass Input Terminal Instructions 126 9 2 Shade Cover SSC 60ST 128 9 2 1 Protection from Harsh Conditions 128 9 2 2 Increased Energy Production 128 10 Technical Data 129 10 1Datasheet 129 10 2Measurement Tolerances 131 10 3Production Grap...

Page 6: ......

Page 7: ...s 2 Overview 5 User Interface 6 Operation and 8 Accessories is intended for the owner and operator of the inverter and does not require any special training or qualifications The information in Chapters 3 Installation 4 Commissioning 7 Maintenance and De Installation is intended for qualified personnel only Qualified personnel have training knowledge and experience in Installing electrical equipme...

Page 8: ...e inverter must be performed by qualified personnel If you encounter any problems during installation or operation of this unit first check the user manual before contacting CPS Customer Service This user manual is applicable for the following models CPS SCA50KTL DO US 480 and CPS SCA60KTL DO US 480 Please keep this user manual on hand for quick reference The manual will be periodically updated or...

Page 9: ...on which if not avoided will result in death or serious injury WARNING WARNING indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION CAUTION indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE NOTICE indicates a hazardous situation which if not avoided could result in the inverter working abnormally or ...

Page 10: ...y WARNING All the installation and wiring connections must be performed by qualified technical personnel Disconnect the inverter from the PV modules and the AC grid before maintaining or servicing the equipment Risk of electric shock and fire Use only with PV modules that have a maximum system voltage of rating of 1000VDC or higher Electric shock Hazard The DC conductors of this photovoltaic syste...

Page 11: ... 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 A team of two is recommended to lift and place the inverter and wirebox into position INSTRUCTION ...

Page 12: ...PV modules a 3 Phase String Inverter with a fused combiner disconnect and AC power distribution equipment Figure 2 1 The inverter converts the available DC energy from the PV modules to AC power by synchronizing the output current to the same frequency and phase as the AC grid All or part of the AC power is supplied to local loads and the surplus power is exported to the electric utility grid AC G...

Page 13: ...C Input Voltage Range 200 950VDC Max DC input voltage 1000VDC Long Service Life Designed with thin film capacitors to extend inverter s service life 3 MPPTs Multi channel MPPT Maximum Power Point Tracker enable maximum design flexibility and energy harvest optimization over the life of the system Separable Wirebox The wirebox enables fused input of either discrete wiring using the Standard wirebox...

Page 14: ...detection with bi directional frequency perturbation DC Input and AC output over voltage protection DC Input over current protection DC input insulation against ground monitoring DC injection of AC output AC output voltage and frequency monitoring Leakage current against ground monitoring Internal enclosure temperature monitoring IGBT power module temperature monitoring ...

Page 15: ... 4 Figure 2 3 Diagram of the Inverter assembly Main items of the Inverter Main inverter enclosure Inverter wirebox Inverter mounting bracket Cooling fans LED indicator lights User LCD display User Key buttons DC switch DC power on off AC switch AC power on off ...

Page 16: ...ents to synchronize to the grid and converts the available PV energy to AC power by injecting balanced 3 phase AC current into the electric utility grid Any high frequency AC component is removed by passing through a two stage relay and EMI wave filter to produce high quality AC power WIRE BOX INVERTER POWER HEAD L1 L2 L3 N PV1 PV1 PV1 PV1 PV1 PV1 PV1 PV1 PV1 PV1 MPPT1 MPPT2 AC Output PV Input PV2...

Page 17: ...from the grid 2 7 DC Ground Fault Protection The inverters include residual current detection GFCI as part of the DC ground fault detection method required by UL 1741 If there is a ground fault in the PV array the ground fault detection circuitry will detect leakage current trigger an alarm and the inverter will cease operation See Chapter 5 for further information regarding GFCI Static and Dynami...

Page 18: ...ain inverter enclosure and B the wirebox mounting bracket user manual and accessory kit Before installation please check that the following items are included in the packages Table 3 1 Main Items No Item Q ty Note Box 1 Main enclosure of the PV inverter 1 A 2 Wiring box of the PV inverter 1 B 3 Mounting bracket 1 Bracket upon which the PV inverter is hung and mounted B 4 User manual 1 PV inverter ...

Page 19: ...d with M8 expansion anchors 3 M6 X18mm Phillips screw 11 4 for securing the wiring box to the main enclosure 6 for securing the inverter to the mounting bracket 1 for the External Ground connection 4 5 pin PCB connector plug 1 For the RS485 communication 5 10 AWG Wire ferrules 33 30 for PV conductors includes 3 spares 6 M8 Nut 4 For the AC terminal block 7 M8 Flat washer 4 For the AC terminal bloc...

Page 20: ...he External Ground connection 4 5 pin PCB connector plug 1 For the RS485 communication 5 PV Connector Male 15 For the PV input 14 AWG contact 6 PV Connector Female 15 For the PV input 14 AWG contact 7 Tool for PV Connector 1 For assembling disconnecting PV Connector 8 M8 Nut 4 For the AC terminal block 9 M8 Flat washer 4 For the AC terminal block 10 M8 Spring washer 4 For the AC terminal block INS...

Page 21: ... 3 4 must be provided to allow the inverter cooling system to operate effectively Install the inverter away from flammable and or combustible substances Avoid installing the inverter in locations that 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 elec...

Page 22: ... the inverter is exposed to temperature swings especially in cold weather moisture inside the inverter power head could condense over the aluminum heatsink area where inverter semiconductors are mounted Water droplets on the heatsink may cause a short circuit to live semiconductor devices When the PV source is applied to the inverter this PV power source could cause the inverter to fail and result...

Page 23: ...ng guidelines below a If the location permits install the inverter vertically 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 d Do not mount the inverter leani...

Page 24: ... 90 TILTED FORWARD d 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: ...OTICE 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 The spacing below the inverter is intended to ensure the LCD and Keypad height are well positioned for the user and may be decreased however consideration must...

Page 26: ...NVERTER 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 The spacing below may be as small as 11 8in 300mm ...

Page 27: ...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: ... 8 MIN 12 MIN BAFFLE BAFFLE 12 MIN 12 MIN 12 MIN A B C D E 14 MIN BAFFLE MUST 1 EXTEND MIN ABOVE AND BELOW FANS 2 EXTEND 4 MIN PAST FRONT OF INVERTER 3 LOCATED 7 MIN FROM BOTH INVERTERS WALL OR PASSIVE CABINET ...

Page 29: ...n 9 84in 250mm 9 84in 17 1in 43 3in 18 3in 8 10 0 480 500mm 18 9 19 7in Note This dimension can be modified according to installation requirements Figure 3 5 Dimensions of the bracket anchoring holes for mounting a PV Racking Mount Locate holes or anchors at the marked positions Fasten the Mounting Bracket with the M8x25 Assembling Bolts supplied with the Accessory Kit M8 nuts are not provided in ...

Page 30: ...n Anchors into the holes Fasten the Mounting Bracket with the M8x25 Assembling Bolts supplied with the Accessory Kit Figure 3 6 and Figure 3 7 Tools Required Electric drill Ф10mm 0 4in masonry bit No 13 wrench Figure 3 6 Drill holes set Anchors and tighten Assembling Bolts 1 2 3 Figure 3 7 Secure the Mounting Bracket ...

Page 31: ...Manual mounting Two people are required to safely lift the inverter by the handle positions marked in Figure 3 9 and mount it onto the bracket Figure 3 8 Mount the Main Enclosure on the Bracket by Lifting Sling 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 ha...

Page 32: ...6 Figure 3 9 Grab Handle Position 3 Install the wiring box a 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: ... after the wiring box is attached to the inverter enclosure Covers may be required in the future if an inverter or wiring box is to be removed during servicing see step 6 Figure 3 14 Tool required No 2 Phillips head screwdriver 4 Secure the wiring box to the main enclosure by using the M6x18 screws 4pcs to fasten the wiring box see Figure 3 12 Tool required No 10 Wrench torque value of 4 Nm 35 4in...

Page 34: ...ch 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: ...ard wirebox H4 wirebox Figure 3 14 Attach the Cover to the left side of the Wiring Box 7 Optional Install an anti theft padlock when the installation is complete The anti theft padlock is used to prevent the inverter from being stolen when the equipment is installed outdoors The inverter may be locked to the bracket as shown in Figure 3 15 Figure 3 15 Location of the Anti Theft Padlock ...

Page 36: ...hackle should meet the requirements of the dimensions shown in Figure 3 16 B C A Figure 3 16 Dimensions of Anti Theft Padlock Shackle Recommended lock size A Shackle diameter 3 6mm B Shackle width 20 50mm C Shackle height 20 50mm ...

Page 37: ...ead screwdriver to remove the 4 screws on the wiring box and remove the cover See Figure 3 18 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 and accessed by selecting the Product Downloads link to get to String Sizing tool This is an o...

Page 38: ...STRUCTION 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 During cover installation it is recommended to hold the cover in alignment with balanced force Partially engage the screws into the threaded inserts before tightening Maintain alignment to avoid thread damage and after screws are fully engaged torque to 35 4 in l...

Page 39: ...e 3 19 a Conduit Knock out Locations on the Standard wirebox Knock outs for DC input 3 1 1 2 inch Trade Size and 1 removable gland plate for custom size conduit i e when use of 2 inch or 2 1 2 inch Trade Size conduit is required Knock outs for communication 3 4 inch Trade Size Knock out for AC output 1 1 1 2 inch Trade Size on a removable gland plate for custom size conduit i e when use of 2 inch ...

Page 40: ...34 6 7 7 8 5 5 Figure 3 19 b Internal Connection Points within the Standard wirebox DC Input fuse holder terminal DC SPD Surge Protective Device Internal ground terminal AC output terminal block ...

Page 41: ...e 3 20 a Conduit Knock out Locations on the H4 wirebox H4 connectors Knock outs for communication 3 4 inch Trade Size Knock out for AC output 1 1 2 inch Trade Size on a removable gland plate for custom size conduit i e when use of 2 inch or 2 1 2 inch Trade Size is required External ground connection point M6 Knock outs for communication in the right side of wirebox 3 4 inch Trade Size Knock out f...

Page 42: ...C Input fuse holder DC SPD Surge Protective Device Internal ground terminal AC output terminal block 3 3 3 DC Connection 3 3 3 1 Working mode These inverters are factory configured with three MPPTs which are electrically divided into separate PV input zones PV Input 1 PV Input 2 and PV Input 3 Each 5 string PV input zone operates as a separate and independent MPP Tracker Independent mode can be ve...

Page 43: ...gure 3 21 Independent Mode INSTRUCTION PV power should be balanced as much as possible between the three MPPT zones See Table 3 6 for string zone combinations NOTE 1 Always attempt to connect an equal number of PV source circuits to PVIn1 PVIn2 and PVIn3 to optimize the individual MPPT zone total inverter operation and energy harvest NOTE 2 Connecting all the inputs to only one will result in only...

Page 44: ...ification Independent Mode per MPPT Model SCA50KTL DO US 480 SCA60KTL DO US 480 Max PV Power 30kW Combined 75kW 33kW Combined 90kW Max PV Voltage 1000Vdc 1000Vdc Start up Voltage Power 330 80W 330 80W Operating Voltage 200 950Vdc 200 950Vdc MPPT Voltage Range 480 850Vdc 540 850Vdc Maximum PV Current Isc x 1 25 68A 68A Specification Parallel Mode 3 MPPTs combined Model SCA50KTL DO US 480 SCA60KTL D...

Page 45: ...SCA60KTL DO US 480 inverter wire boxes include touch safe fuse holders and 15A DC fuses as a factory standard Ensure that the appropriate fuse values are used depending on the configuration of the PV string and by performing PV fuse sizing calculations for each string 1 Each DC input conductor for the PV string requires fuse protection 2014 NEC and earlier editions 2 The voltage rating of the fuse...

Page 46: ...wirebox internal factory wiring are designed to accept either 15A 20A 25A or 30A rated fuses 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 f...

Page 47: ...led in adjacent fuse holders An empty or unused fuse holder must be situated between each 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 n...

Page 48: ...easure the PV strings conductor ends and check the polarity B The positive terminal of the conductor should match the positive terminal of inverter s DC input C The negative terminal of the conductor should match the negative terminal of inverter s DC input Figure 3 22 Polarity Check NOTICE It is important to use a multi meter to check the polarity of the DC source circuit conductors to avoid any ...

Page 49: ...ues specified by their manufacturers The fuse holders can be identified by color markings Bussmann Yellow and Mersen Orange See Table 3 6 for specified torque values Table 3 6 DC Fuse Holder Torque Value by Manufacturer Bussmann CHPV1 Mersen Ferraz Shamut USM1 Single Conductor Specified Torque 18 12AWG 20in lbs 2 3Nm 10AWG 25in lbs 2 8Nm 8 4AWG 30in lbs 3 4Nm Single Conductor Specified Torque 14 6...

Page 50: ... into the wiring box 2 Using the removable gland plate Optionally all DC input cables from the PV source circuits may be routed through a single larger knock out hole inside the wiring box The wiring box includes removable gland plates that may be drilled or punched for up to 2 1 2 inch Trade Size conduit a Remove the M6x18 screws 4 pcs securing the DC gland plate to the wiring box see Figure 3 23...

Page 51: ... INPUT Figure 3 23 DC input through single knockout hole Table 3 7 Tools Required for Cable Termination No Tools Remark 1 2 Phillips head screwdriver Fuse holder Terminal 2 Diagonal pliers or cable cutters Cut cable 3 Wire stripping pliers Remove jacket 4 Torque driver Torque terminals to specification 5 Crimping pliers tool Ferrule crimp optional ...

Page 52: ...minals are available as an optional accessory when external PV string fused combiners are used The Bypass Terminals allow for larger single conductors to be terminated at each MPPT within the wirebox bypassing the input fuses as shown in Figure 3 24 See Chapter 9 Accessories for installation information INSTRUCTION 10 AWG wire ferrules are provided in the Accessory Kit for the Standard wirebox The...

Page 53: ...47 Figure 3 24 Bypass Terminal option installed within the Standard wirebox ...

Page 54: ...e used in this step contact Amphenol retailer to purchase this tool Adjust the stripper stopper and insert the cable in the corresponding notch to strip to 0 276 inches 7 0 mm length Figure 3 25 Cable strip length 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 O...

Page 55: ...red in the contact barrel and the conductor is visible in the inspection hole Figure 3 26 Cable insertion process 4 Crimp process solid contacts The Amphenol specified crimp tool H4TC0001 must be used in this step Insert the contact into the corresponding crimping notch or locator male or female considering the cable size used Insert the stripped cable end until the insulation comes up against the...

Page 56: ... seated See Figure 3 29 and Figure 3 30 Figure 3 28 a Assemble female connector with DC positive cable Figure 3 28 b Assemble male connector with DC negative cable 6 Connector body tightening The back cap must be closed using a torque of approx 2 7Nm 24in lbs Amphenol specified hand wrench tool H4TW0001 can be used in this step with the Amphenol open end back cap spanner H4TE0000 or socket wrench ...

Page 57: ...he PV string pairs to the PVIn1 PVIn2 and PVIn3 terminals Figure 3 30 Install assembled H4 DC cable connectors NOTICE Confirm the following points before connecting the assembled H4 DC cables to the inverter A Check the GND conductor is well connected Refer to Section 3 3 4 for detailed information regarding the ground connection B Confirm the DC Disconnect switch is in the OFF position ...

Page 58: ... as one terminal in the LV compartment and labeled H0X0 2 Transformer short circuit impedance Z should be less than 6 3 The transformer VA rating must be at least 100 of the sum of the connected inverter VA ratings 4 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 th...

Page 59: ...pliers tool Crimp terminal 1 Using the 1 1 2 inch knockouts Remove the liquid tight hole plug from the right side or bottom of the AC input portion of the wiring box to install 1 1 2 inch Trade Size conduit and conduit fittings into the hole Then route the cables through the conduit inside the wiring box If 2 or 2 1 2 inch Trade Size conduit is required see Step 2 2 Using the removable gland plate...

Page 60: ...ews 4 pcs securing the AC gland plate to the wiring box B Remove the AC gland plate and rubber gasket prior to punching the conduit hole to ensure metal filings do not enter the wirebox C Use a punching tool to create desired hole size in the gland plate D Reattach the rubber gasket and AC gland plate to the wiring box with the M6x18 screws 4 pcs Tool required No 3 Phillips head screwdriver torque...

Page 61: ...the ground busbar left 1 This is required for grounding the equipment by running the EGC with the ungrounded conductors B Bonding via the external grounding point right 2 The external bonding connection is provided in case the inverter mount needs to be bonded to a metallic structure on which it may be mounted NOTICE Terminate the Ground cable prior to terminating the AC cables ...

Page 62: ...pper wire 6 4AWG for internal grounding bar or external grounding stud torque 50 in lbs L1 L2 L3 N 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 orexternal grounding stud torque 50 in lbs L1 L2 L3 N The dimension limited of lug terminal 24 5 max 12 5 max 21 max 19 max 8 min 11 5 max Figure ...

Page 63: ...l grounding bar 6 4 AWG CU 5 65 N m 50 in lbs External grounding point 6 4 AWG CU 5 65 N m 50 in lbs 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 Figure 3 34 Standard 1 hole Lug Metric 1 hole Lug Figure 3 34 Compression Lug OT Terminal maximum dimensions ...

Page 64: ...ut and internal ground conductor set up When bonding the inverter mount to a metallic structure is required use the OT type terminal to connect the ground conductor to the external bonding point at the bottom of the wiring box The bonding point is located at the bottom of the Standard wirebox as shown in Figure 3 36 a the H4 wirebox as shown in Figure 3 38 b INSTRUCTION The neutral conductor from ...

Page 65: ...e details please see the user manual WARNING High touch current Earth connection essential before connecting supply AC OUTPUT 3 9 in 9 4 in 237mm 99mm Figure 3 36 b External Ground Point of H4 connector wirebox NOTICE Always connect the Ground cable before AC cable It is required to use the AL9CU OT type terminal if you chose the aluminum cable for AC output ...

Page 66: ...3 After removing the oxidized layer immediately apply neutral grease Noalox or an acid and alkali free Vaseline and immediately connect the cable lug to the conductor Perform these steps on one conductor at a time If the process is stopped or delayed before applying the grease and continued later the conductor must be scraped again It takes roughly 30 60 seconds for an oxidized layer to form on to...

Page 67: ... Selecting a breaker of another size may either result in nuisance tripping or rejection from the AHJ Table 3 10 Specification of AC breaker selection Inverter Min AC OCPD Max AC OCPD CPS SCA50KTL DO US 480 90A 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 communica...

Page 68: ... 4 ON OFF S1 ON OFF S1 Figure 3 39 a Communication Board of Standard wirebox 1 SPD 2 3 PE 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 L1 L2 L3 N 1 2 3 ON OFF S1 4 ON OFF S1 Figure 3 39 b Communication Board of H4 Connectors wirebox 3 4 1 Descript...

Page 69: ...nation resistance 2 OFF Disable 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 RS485 ...

Page 70: ...hrough 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 3 42 Other communication topologies such as the star networks are not recommended All RS485 connections must be terminated in a serial fashion and not to exceed 32 in total 1...

Page 71: ...om using similar methods to the AC and DC wiring Conduit and knockouts must be sealed and water tight to maintain the NEMA 4X rating 3 Connect the RS485 wires to the P7 connector ensuring correct polarity and using a shielded twisted pair cable a If connecting only one inverter one network cable is required b If connecting multiple inverters into a daisy chain network all inverters but the last in...

Page 72: ...N position in any other inverters of the daisy chain If there is only one inverter the Modbus termination switch S1 should be set to ON 5 The shield of the individual cables must be open not connected to ground on one end the other end of the shield must be grounded Failure to follow this installation practice will increase lightning surge damage to the inverter and will void the warranty ...

Page 73: ...gure 4 1 LCD Panel The LCD panel includes a screen saver function to increase the service life of the display If there is no user activity or operation key press for greater than 1 minute the display will enter the screen saving mode to protect the screen and prolong the service life During normal inverter operation a key press or any warnings or system faults that may occur will cause the LCD to ...

Page 74: ...d running status light up 0 5s light off 1 6s Light off In other operation status or power supply not working GRID Grid status indication light Light on Grid is normal Flash Grid fault light up 0 5s light off 1 6s Light off Power supply not working FAULT Fault status indication light Light on Indicates a Fault Slow flash Indicates Alarm light up 0 5s light off 2s Fast flash Protective action light...

Page 75: ...ts that the grid connection conditions meet the requirements and power is being fed into the grid The RUN LED will blink if the grid is in a de rated running state while feeding power into the grid GRID LED will illuminate when the grid is normal during inverter operation Otherwise the GRID LED will continue to blink until the grid restores to normal FAULT LED will blink quickly as a fault except ...

Page 76: ...starts with the company logo once the system is energized as shown in Figure 4 2 Chint Power System Initialization Figure 4 2 LOGO Interface 2 While the inverter is in Normal Operation mode and not in screen saver the interface indicates PV voltage PV current Grid voltage instant power daily generated power and time This is the Default Indication Interface The inverter will enter Standby mode when...

Page 77: ... 0kWh 3 6 9 12 15 18 21 24h 15 30 45 60 kWh Standby Addr 001 PV1 0 0V 0 0A Figure 4 3 Default Display Interface for Normal Operation 3 If the inverter experiences a Fault it will enter Fault mode and display the current or most recent faults History Record Running Record Fault Record Current Error Figure 4 4 History Record Interface ...

Page 78: ...n in Figure 4 5 Main Menu Measurement Data History Record Power On Off Device Information Setting Figure 4 5 Main Menu on the LCD Screen The main menu of the LCD screen has 5 menus Measurement Data Setting Power ON OFF History Record and Device Information The users may select options by moving the curser up down with and and then press the ENT key to confirm the selection The users can return to ...

Page 79: ... kW PV Input Mode Independent PV3 0 0 PV1 PV2 Vdc V Idc A 0 0 0 0 0 0 0 0 0 0 0 0 Energy E Today kWh 0 0 E Month kWh 0 0 E Total kWh AC Output L3 N L1 N L2 N V V I A 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 F Hz Others Ambient Temp Heatsink Temp 37 0 49 9 P1 4 P2 4 P3 4 P4 4 Pac Kw P Ref PF Ref 0 0 100 0 1 000 0 0 Grid Connection Rule IEEE1547 Power Derating Main Menu Measurement Data History Record Po...

Page 80: ... 7 Enter the password number by pressing and selecting the numeral and pressing the ENT key to input and proceed to the next digit of the password number Once all four digits are entered press the ENT key to confirm the password or Press the ESC key to go back to Setting Setting Please enter Password 1 1 1 1 Figure 4 7 Input Password Number ...

Page 81: ...p Others Parameters Setting P1 2 System Parameters Protection Parameters Power Derating Setup Reactive Power Derating Setup ARC Parameters Control Command Figure 4 8 System Setup Menu and Submenus Overview 4 4 2 1 System Parameters The System Parameter selection contains nine submenus 1 Language Setting Two languages i e Chinese and English are available in Language menu Language setting ENGLISH C...

Page 82: ...NE Figure 4 10 Setting Grid Rule INSTRUCTION Please check with your local electric utility supply company before selecting a grid standard If the inverter is operated with an incorrect grid standard the electric utility supply company may cancel the interconnection agreement Placing the inverter into operation before the overall system complies with the national codes rules and safety regulations ...

Page 83: ...the inverter This is for measurement and display purposes only When a neutral is installed and Yes is selected the inverter will display L N measurements 6 Communication Setting This interface is used to set the Modbus ID and Baud rate for communication More information on this is found in the Commissioning section 7 Time Press or to select the numerical value then press ENT to go to next option e...

Page 84: ...RC Clear P1 2 Figure 4 12 Control Command Setting 1 Force Restart If a fault shutdown happens a severe fault may have occurred inside the inverter The user can perform a force reboot for one time in this menu if the user needs to restart the inverter INSTRUCTION Force Restart is effective only when the faults IntFault0010 0150 in the troubleshooting table occur The inverter may restore to normal o...

Page 85: ...c board err shown on the LCD and it will not connect to the grid until the arc board is OK If there is an Arc fault the LCD displays the fault which can only be cleared manually 4 ARC Clear Mannually clear the ARC fault Move the cursor to this menu and press ENT The operation result will appear on the LCD ie Succeed or Failed Complete this action after checking the PV system for potential arcs and...

Page 86: ...al 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 Once this MPPT scan function is activated on LCD it will search the maximum power point at a voltage step of 5V in the MPPT range for full load and retrieve the maximum power point ...

Page 87: ...n VolMax FrqMax Hz VolRecoveryT S FrqRecoveryT S FrqMin Hz 60 3 300 00 90 00 107 92 300 00 59 8 Enable Disable Disable Grid Voltage Balance P7 7 GridVolBalance 10 00 Disable Enable Disable Enable Enable Enable Grid Over Frequency Protection P3 7 FrqMaxTripT1 S GridFrqMax1 Hz GridMaxTripT2 S GridFrqMax2 Hz FrqMaxTripT3 S GridFrqMax3 Hz 0 16 62 2 00 60 5 0 16 Enable Enable Disable Disable Enable Ena...

Page 88: ... 0 16 655 GridVoltMax3 Threshold value of Level 3 Max grid voltage 100 00 120 00 135 00 100 00 120 00 135 00 VoltMaxTripTime3 S Threshold value of Level 3 Max grid trip voltage 0 0 16 655 0 0 16 655 GridVoltMin1 Threshold value of Level 1 Min grid voltage 30 00 88 00 100 00 30 00 88 00 100 00 VoltMinTripTime1 S Threshold value of Level 1 Min grid trip voltage 0 2 0 655 0 20 50 655 GridVoltMin2 Thr...

Page 89: ...d frequency 0 0 16 655 0 0 16 655 GridFrqMin3 Protection threshold value of Level 3 Min grid frequency 54 57 60 54 57 60 FrqMinTripT3 S Trip time of Level 3 Min grid frequency 0 0 16 655 0 0 16 655 GridFrqMax1 Protection threshold value of Level 1 Max grid frequency 60 60 5 65 50 60 5 65 FrqMaxTripT1 S Trip time of Level 1 Max grid frequency 0 2 655 0 299 50 655 GridFrqMax2 Protection threshold va...

Page 90: ...100 00 20 00 90 00 100 00 VolRecoveryT S Recovery time of grid voltage protection 0 300 655 0 300 655 FrqMax Hz Recovery Max threshold of grid Frequency protection 54 60 3 66 54 60 4 65 FrqMin Hz Recovery Min threshold of grid Frequency protection 54 59 8 60 48 58 6 60 FrqRecoveryT S Recovery time of grid frequency protection 0 300 655 0 300 655 Grid Voltage Balance IEEE1547 Rule21 Parameter name ...

Page 91: ...7 20 50 83 00 20 50 83 00 LVRTTime7 LVRTTime8 LVRTVol7 LVRT Curve LVRT Curve LVRTVol8 HVRT Curve HVRTTime1 HVRTVol1 P4 7 0 80 125 00 0 00 125 00 HVRTVol2 124 00 0 80 P5 7 12 50 115 00 12 50 124 00 115 00 12 50 HVRTTime2 HVRTTime3 HVRTVol3 HVRTVol4 HVRTTime4 HVRTVol5 HVRTTime5 HVRTTime6 HVRTVol6 P6 7 12 50 115 00 12 50 115 00 HVRTTime7 HVRTTime8 HVRTVol7 HVRT Curve HVRT Curve HVRTVol8 LVRT and HVRT...

Page 92: ...2 4 6 8 10 12 14 16 18 20 22 1 2 3 4 5 6 7 8 Through Trip Voltage N rated Time S Figure 4 15 The LVRT Curve 1 3 1 25 1 2 1 15 1 1 1 05 1 2 4 6 8 10 12 14 16 18 20 22 1 2 3 4 5 6 7 8 Through Trip Voltage N rated Time S Figure 4 16 The HVRT Curve ...

Page 93: ...e ride through 3rd 4th point 0 45 100 0 45 100 0 50 100 0 50 100 LVRTTime 3 4 Time of Level Low voltage ride through 3rd 4th point 0 1 2 655 0 10 5 655 0 1 2 655 0 10 5 655 LVRTVolt 5 6 Threshold value of Low voltage ride through 5th 6th point 0 65 100 0 65 100 0 70 100 0 70 100 LVRTTime 5 6 Time of Level Low voltage ride through 5th 6th point 0 10 5 655 0 20 5 655 0 10 5 655 0 20 5 655 LVRTVolt 7...

Page 94: ...ugh 3rd 4th point 100 124 135 100 124 135 100 120 135 100 120 135 HVRTTime 3 4 Time of Level high voltage ride through 3rd 4th point 0 0 8 655 0 12 5 655 0 0 11 655 0 12 5 655 HVRTVolt 5 6 Threshold value of high voltage ride through 5th 6th point 100 115 135 100 115 135 100 110 135 100 110 135 HVRTTime 5 6 Time of Level high voltage ride through 5th 6th point 0 12 5 655 0 12 5 655 0 12 5 655 0 12...

Page 95: ...power output 0 0 2 0 2 2 LVRTTripVolt Threshold value of LOW voltage trip 70 0 80 0 100 0 70 0 88 0 100 0 LVRTPstReactive1 The factor LVRT Positive Reactive Current 0 150 0 300 0 0 150 0 300 0 LVRTNegReactive1 The factor LVRT Negative Reactive Current 0 200 0 100 0 200 0 100 HVRTModeSetting 0 Disable 1 Enable no reactive power output 2 Enable reactive power output 0 0 2 0 1 2 HVRTTripVol Threshold...

Page 96: ...7 Active Power Derating Percentage CtrMode P3 3 100 0 0 Power vs Voltage OvrVolSlop Pn s OvrVoltTrip P1 3 OvrVolFilterT s 60 0 0 110 00 OvrFrqMax Hz OvrFrqMin Hz P2 3 OvrFrqSlop Pn s 60 0 0 16 61 4 60 4 OvrFrqRecoveryT S RecovryFrq Hz 60 OvrFrqDeratingMode 0 Disable Power vs Friquency LVRT HVRT Setup Setting P1 2 System Parameters Protection Parameters Power Derating Setup Reactive Power Derating ...

Page 97: ...cy of Over Frequency derating 54 60 5 66 54 60 2 66 OvrFrqMax Hz The end frequency of Over Frequency derating 60 61 4 72 60 61 5 72 OvrFrqSlop P s The rate of Overfrequency derating 0 01 0 16 10 0 01 8 00 10 RecoveryFrq Hz The recovery frequency of OverFrequency derating 58 8 60 66 58 8 60 20 66 OvrFrqRecoveryT s The recovery time of OverFrequency derating 0 60 1200 0 20 1200 OvrFrqDeratingMode Ov...

Page 98: ...veQ1i QuCurveU2i LVRT HVRT Setup Setting P1 2 System Parameters Protection Parameters Power Derating Setup Reactive Power Derating Setup ARC Parameters Control Command Figure 4 18 Reactive Derating Setting Table 4 8 Reactive Power Control IEEE 1547 and Rule21 Grid Reactive Power Derating IEEE1547 Rule21 Parameter name Description Setting Range Min Default Max Setting Range Min Default Max pFSetVal...

Page 99: ...djusting the Power Factor 2 pFCurve functions PF curve mode Using the curves to set the PF P setpoints See Figure 4 19 These functions are only available for IEEE 1547 grid standards Figure 4 19 PF P Curve Mode Capacitive PF 1 1 Inductive PFCurveP1 PFCurvePF1 PFCurveP2 PFCurvePF2 P INSTRUCTION The PF P Curve function is only available for IEEE 1547 grid standards ...

Page 100: ...tion changes according to the grid voltage These functions are only available for IEEE 1547 grid standards Figure 4 20 Q U Curve Mode Capacitive Q _ Inductive QuCurveU2i QuCurveQ2i U V QuCurveU1i QuCurveQ1i QuCurveU1 QuCurveQ1 QuCurveU2 QuCurveQ2 INSTRUCTION The Q U curve function is only available for IEEE 1547 grid standards ...

Page 101: ...8 110 110 108 108 110 QuCurveQ2 Reactive power of Q U Curve point 2 66 50 66 60 60 60 QuCurveU1i V Voltage of Q U Curve point 1i 90 92 01 99 90 99 99 QuCurveQ1i Reactive power of Q U Curve point 1i 66 0 66 60 0 60 QuCurveU2i V Voltage of Q U Curve point 2i 80 90 92 80 92 92 QuCurveQ2i Reactive power of Q U Curve point 2i 66 50 66 60 60 60 QuCurveTriPower V The trigger voltage of Q U Curve 5 20 100...

Page 102: ...nd Figure 4 21 Arc Parameters Setting 4 4 2 8 Other Parameters Other Parameters is used to set additional parameters including MPPT scan period nominal derating step and GFCI DCI parameters Press ENT and use UP DOWN keys to set parameters and enable disable the functions Press ENT to confirm the setting The parameters shown in Figure 4 22 and Table 4 10 Others PVSlowStartSlope PowerOnDelay s P1 5 ...

Page 103: ... 00 10 NormalDeratingStep Power step in Derarting 0 01 6 00 10 0 01 5 00 10 FaultPowerT The trigger temperature of module C 95 0 95 0 95 0 95 0 95 0 95 0 FaultEnvT The trigger temperature of enviroment C 83 83 83 83 83 83 GFCIStaticValue mA The static threshold value of Leakage current 100 250 1000 100 250 1000 GFCIStaticT s The static threshold value of Leakage current 0 0 2 655 0 0 2 655 GFCIDyn...

Page 104: ...D Checking enable disable control 0 0 1 0 0 1 Island Protect Island enable disable control 0 Disable 1 Enable 0 1 1 0 1 1 Fan Detect Fan detection enable disable control 0 Disable 1 Enable 0 1 1 0 1 1 4 4 2 9 File Export local File Export is used to export the data including Running History and Fault Record to a flashdrive Press ENT and use UP and DOWN arrows to export the data and press ENT to co...

Page 105: ...OFF the inverter but it can be shut down manually if regulation setting or maintenance is required Move the cursor from the main operation interface to POWER ON OFF and press ENT Move the cursor to OFF and press ENT and then the inverter will be shut down 4 4 3 2 Automatic Turn ON OFF The inverter will start up automatically when the output voltage and power of PV arrays meet the set value AC powe...

Page 106: ...2 12 20 08 Time Fault0040 Fault0040 Fault0040 Fault Record P1 1 Num Date Error 001 15 10 22 12 20 08 003 15 10 22 12 20 08 002 15 10 22 12 20 08 004 15 10 22 12 20 08 005 15 10 22 12 20 08 Time Fault0040 Fault0040 Fault0040 Fault0040 ArcboardErr Action ON ON ON ON ON Running Record P1 1 Num Date Event 001 15 10 22 12 20 08 003 15 10 22 12 20 08 002 15 10 22 12 20 08 004 15 10 22 12 20 08 006 15 10...

Page 107: ...rmation as shown in Figure 4 24 Inverter information P1 2 Device Model SCA60KTL DO US 480 Device SN 0 0000 0000 0000 DSP Ver 01 00 0x505A LCD Ver 01 00 DSP Bootloader Ver 01 00 LCD Bootloader Ver 01 00 MiniMCU Ver 01 00 Data Logger Information P2 2 IP 0 0 0 0 Data Logger SN 0 0000 0000 0000 Subnet Mask 0 0 0 0 DNS Server 0 0 0 0 Gateway 0 0 0 0 Address Range Main Menu Measurement Data History Reco...

Page 108: ...ting a water tight seal 5 2 Conductor Connections Make sure all conductors are connected to the right terminals and properly labeled The appropriate cable management is important to avoid physical damage No sharp edges from cable ties exist Check polarity of DC input conductors The DC Switch should be in the OFF position Refer to 3 3 Electrical installation 5 3 Electrical Check Make sure that the ...

Page 109: ...light up The inverter will then start up with the message sys checking When the inverter completes sys checking the LCD will show the screen as Figure 5 1 below Chint Power System Initialization Figure 5 1 System Checking Logo 4 Setting Language Press ENT to access the main menu select Setting and press ENT The password is 1111 using the arrow keys enter the password and press ENT to access the ne...

Page 110: ...own to the required grid standard Press ENT to select the required standard Grid Connection Rule CA Rule 21 UL 1741 SA HECO ML HECO HM IEEE1547 NONE Figure 5 3 Set up Grid Standard 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 inverte...

Page 111: ... go to next option e g Year to Month Finally Press the ENT key to confirm the setting Time setting 2016 05 21 Date Time 12 21 03 Figure 5 4 Time Setting 7 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: ...e 9 Choosing the communication data From the previous menu press ESC to return to the System Paramters menu Scroll to Communication Setting and press ENT Select Baud rate and press ENT The default setting is 9600 Depending on the data aquasition SCADA system being used the baud rate may need to be increased or decreased Scroll up down to select other speeds and press ENT Next select Address and pr...

Page 113: ...own arrows increase or decrease the contrast to the desired setting Press ENT to accept the changes 11 When the LCD screen shows the normal operation status Figure 5 8 and the RUN light on the LED panel is illuminated this is an indication that the grid connection and power generation are successful E T 0 0kWh 2015 10 22 12 00 00 E D 0 0kWh 3 6 9 12 15 18 21 24h 15 30 45 60 kWh Standby Addr 001 PV...

Page 114: ... to access the current faults the inverter has recorded This information will show on the LCD screen as shown in the Figure 5 9 Current Error P1 1 Date Error 2015 10 22 12 20 08 ArcboardErr 2015 10 22 12 20 08 2015 10 22 12 20 08 Fault0040 2015 10 22 12 20 08 2015 10 22 12 20 08 Time Fault0040 Fault0040 Fault0040 Figure 5 9 Fault Information Interface ...

Page 115: ...nverter Then the inverter will start up and operate normally if the start up condition is met Otherwise the inverter will go to stand by mode 6 2 Shut Down Automatic shutdown The inverter will be shut down automatically when the output voltage and power of PV modules are lower than the set value AC power grid fails or the ambient temperature exceeds the normal range Manual shutdown Normally it is ...

Page 116: ...inverter will check automatically whether it meets the startup conditions in this mode until it turns back to Normal Operation mode 4 Fault mode is displayed when the inverter disconnects from the grid due to a fault in the inverter or grid Check the Fault log under Current Errors and reference the Troubleshooting table in Chapter 8 to determine the cause of the error 6 4 Grid tied Power Generatio...

Page 117: ...ss than 8G and format the drive to FAT32 a Insert the USB flash drive into a compter b When the USB drive appears in the File Explorer Right click the drive and select Format The File system should display FAT32 as default If not make this selection and click start 2 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 direct...

Page 118: ...tep 4 when prompted and repeat the process Firmware Update DSP firmware LCD firmware Upgrading device firmware please Wait UPGRADE FIRMWARE Please Confirm LVRT HVRT Setup Setting P1 2 System Parameters Protection Parameters Power Derating Setup Reactive Power Derating Setup ARC Parameters Control Command History Record Main Menu Measurement Data Power On Off Device Information Setting Setting P2 2...

Page 119: ...inals to propr torque referring to 3 3 Electrical Installation Check for damage to the conductor cable jacket Repair or replace any damaged conductors cables 7 1 2 Clean the Air Vent Grate The inverter can become hot during normal operation It uses built in cooling fans to provide sufficient air flow and help in heat dissipation Check the air vent grate regularly to make sure it is not blocked Cle...

Page 120: ...screws on the upper fan tray and 4 screws on the lower fan tray 2 Disconnect the waterproof cable connector from the cooling fan 3 Use a No 2 Phillips head screwdriver to remove the screws Each fan is attached to the fan tray with 4 screws 4 Attached the new cooling fans on the fan tray and screw into place Fasten the cable on the fan tray with cable ties Torque value 0 8 1N m 7 1 8 91in lbs 5 Ins...

Page 121: ...ed off The DC switch of the inverter is turned off Now replace the inverter according to the following steps 1 Unlock the padlock if one is installed on the inverter Figure 7 2 Unlock the padlock 2 Use a No 3 Phillips head screwdriver to unscrew the 2 screws on both sides of the inverter Figure 7 3 Remove the screws on both sides ...

Page 122: ...f the replacement inverter is onhand and to be installed immediately skip this step and refer to section 3 2 for installation of the inverter Otherwise use a No 2 Phillips head screwdriver to remove the 2 screws on the left side of the wiring box and remove the bulkhead cover Attach the cover on the connector of wiring box Torque value 1 6N m 14 2in lbs Figure 7 5 Install the cover on the connecto...

Page 123: ...acitors have been completely discharged 6 Measure the AC output conductor terminal voltage against the ground The meter should now read 0V 7 Disconnect the AC and PE cables referring to 3 3 4 AC and ground connection 8 Disconnect the DC cables referring to 3 3 3 DC connection Caution if PV strings terminate directly in the wiring box and do not pass through a breaker or switch that was opened in S...

Page 124: ...and troubleshoot according to Table 8 1 Table 8 1 Troubleshooting of LED Lights LED fault status Solutions Neither the Power LED nor the LCD screen lights up 1 Turn off the external AC breaker 2 Switch the DC switch to OFF position 3 Check the PV input voltage and polarity The GRID LED is blinking 1 Turn off the external AC breaker 2 Switch the DC switch to OFF position 3 Check whether the grid vo...

Page 125: ... sales service to ensure your quickest time to resolution Table 8 2 LCD Troubleshooting WARNING Type Error State Fault Description Instruction Warning Warn0030 EepromErr Definition Internal alarm Recommended solutions 1 Observe for 5 minutes to see whether the alarm will be eliminated automatically 2 Contact post sales service if not corrected Warn0050 TempSensorErr Recommended solutions 1 Observe...

Page 126: ...inutes to see whether the alarm will be eliminated automatically 2 Switch off exernal AC disconnect then back on to reboot the system 3 Contact post sales service if not corrected ExtFanErr Definition Cooling fan failure Possible causes 1 Fan is blocked 2 Fan service life has expired 3 Fan socket connecter has poor contact Recommended solutions 1 Observe for 5 minutes to see whether the alarm will...

Page 127: ...range 2 Check the measured frequency value on the LCD if within limit restart the inverter Protect0020 Grid relay error 1 Restart inverter by turning both AC and DC switches off Wait for 1 minute for all energy to discharge and turn both switches ON 2 If inverter cannot clear fault replace inverter TempOver Over temperature protection 1 Confirm the external ambient temperature is within the specif...

Page 128: ...fault replace inverter IsolationErr Insulation resistance low Check wires of PV and ground 1 Turn OFF AC switch to disconnect from grid 2 Open fuse holders to isolate PV strings Test strings with string test set 3 Add one PV string at a time and start up inverter to see if alarm occurs 4 If no alarm turn OFF AC switches to disconnect from grid and add the next string Turn AC switch on and start up...

Page 129: ...x Over current PVx Over current x 1 2 3 1 Check PV input Current 2 Restart inverter by turning both AC and DC switches OFF Wait for 1 minute for all energy to discharge and turn both switches ON 2 If inverter cannot clear fault replace inverter PV2VoltOver PVx Over Volt x 1 2 3 1 Measure voltage at DC terminals in wiring box and compare with reading in Measurement Data menu PV voltage must be less...

Page 130: ...Fault0090 Dynamic leakage current high Check wires of PV and ground 1 Turn OFF AC switch to disconnect inverter from grid 2 Open fuse holders to isolate PV strings Test strings with meter 3 Add one PV string and start inverter to see if alarm occurs 3 If no alarm turn OFF AC switches to disconnect from grid and add in the next string Start inverter again 4 Continue until the string that triggers t...

Page 131: ...t for 1 minute for all energy to discharge between OFF and turn both switches ON 2 If inverter cannot clear fault replace inverter Fault0150 Open loop self check failure 1 Restart inverter by turning both AC and DC switches OFF Wait for 1 minute for all energy to discharge and turn both switches ON 2 If inverter cannot clear fault replace inverter ...

Page 132: ... are isolated from one another by design although the MPPT negative inputs IN1 IN2 and IN3 are combined via a common bus structure 9 1 1 Bypass Input Terminal Instructions 1 Remove the wirebox cover Figure 9 1 2 Remove the plastic touch safe finger guards Figure 9 2 3 Use a No 2 Phillips head screwdriver to install the Bypass Terminals on each bus by fastening each terminal with the M4 screws Torq...

Page 133: ...127 Figure 9 1 Remove Wirebox Cover Figure 9 2 Remove Plastic Touchsafe Finger Guards Figure 9 3 Bypass Terminals Installed on POS Input Figure 9 4 Bypass Terminals Installed on NEG Bus ...

Page 134: ...cation and environment shade covers will help to increase energy production by reducing potential power derating due to excessive ambient temperatures Inverters derate in extreme temperatures to protect themselves from over temperature conditions 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 ...

Page 135: ...witch DC Surge Protection Type II MOV 2800VC 20kA ITM 8 20μS AC Output Rated AC Output Power 50kW 60kW Max AC Apparent Power 55kVA 66kVA Rated Output Voltage 480VAC Output Voltage Range1 422 528VAC Grid Connection Type 3Φ PE N Neutral optional Max AC Output Current 480VAC 66 2A 79 4A Max AC OCPD Rating 110A 125A Rated Output Frequency 60Hz Output Frequency Range1 57 63Hz Power Factor 0 99 0 8 adju...

Page 136: ...y Mechanical Data Dimensions WxHxD 39 4 x 23 6 x 10 24 in 600 1000 260mm Weight Inverter 123 5lbs 56kg Wirebox 33lbs 15kg Mounting Installation Angle3 0 to 90 degrees from horizontal vertical angled or lay flat AC Termination M8 Stud Type Terminal Block Wire range 6 3 0AWG CU AL Lugs not supplied DC Termination Screw Clamp Fuse Holder Wire range 14 6AWG CU Optional H4 Amphenol Fused String Inputs ...

Page 137: ...nd has wider tolerances for the measurements it makes The inverter tolerances are generally 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 Power tolerances 3 Time tolera...

Page 138: ...nverter 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 540VDC or higher than 850VDC the inverter begins derating as shown in Figure 10 1 and 10 2 ...

Page 139: ...133 Figure 10 1 CPS SCA50KTL kW and kVA derating curves of PV input voltage ...

Page 140: ...134 Figure 10 2 CPS SCA60KTL kW and kVA derating curves of PV input voltage ...

Page 141: ...135 Figure 10 2 CPS SCA60KTL Reactive Power Capability ...

Page 142: ...ut power Pn will begin to derate as shown in Figure 10 2 Pin Pn Tamb 45 60 100 80 60 40 20 3 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: ...0 110 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 20 40 60 80 100 Po Pn 0 88 Un Un 1 1 Un Grid Voltage Vac Figure 10 4 SCA50 60KTL Derating Curve of Grid Voltage ...

Page 144: ... 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: ...te 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 Copyright is reserved Duplication of any part of this issue is prohibited without written permission ...

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