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Installation Guide RN3000US Apr 2013

35

5.4 Wiring the DC input

This subsection provides procedures for wiring the DC input from the PV array
to the Digiwatts unit.

5.4.1 DC Connection Requirements

WARNING!

All electrical installations must be done in accordance with all local
electrical codes and with the National Electrical Code (NEC),
ANSI/NFPA 70. For installation in Canada the installations must be
done in accordance with applicable Canadian standards.

WARNING!

Use #8 AWG-10AWG, 105 °C, copper wire for all DC wiring connections
to the Digiwatts. Voltage drop and other considerations may dictate
that larger size wires be used. Use only solid or stranded wire but not
fine stranded wire.

WARNING!

Any additional DC disconnect for the inverter must have a minimum
rating of 600VDC and 25A continuous.

Information

Series fusing may be required depending on the type of PV module used
in the system. See NEC 690.9.

WARNING!

You must connect the wires that carry the DC voltage from the PV array to the
Digiwatts unit in the order described in the following procedure. Deviating from
this procedure could expose you to lethal voltages that can cause serious injury
and/or death.

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Содержание Digiwatts RN3000US

Страница 1: ...PV Grid connected Inverter Digiwatts RN3000US Installation Guide Copyright Renovo Power Systems All rights reserved Rev 1 3 ...

Страница 2: ... prior notice We make extensive effort to make this document is complete accurate and receives timely updates Readers are cautioned however the Renovo Power Systems reserves the right to make changes without notice and shall not be responsible for any damages including indirect incidental or consequential damages caused by reliance on the material presented including but not limited to omissions t...

Страница 3: ...Installation Guide must be closely read and followed Warnings A Warning describes a hazard to equipment or personnel It calls attention to a procedure or practice which if not correctly performed or adhered to could result in damage to or destruction of part or all of the Renovo Power equipment and or other equipment connected to the Renovo Power equipment or personal injury WARNING WARNING indica...

Страница 4: ...oduct with the following meanings Warning regarding dangerous voltage The product works with high voltages All work on the product may only be done as described in the documentation Beware of hot surface The product can generate heat during operation Avoid coming into contact with the product during operation Observe the operating instructions Read the product s documentation before working on it ...

Страница 5: ...orized Renovo Power Service Center Before installing or using the Digiwatts unit read all of the instructions cautions and warnings on the Digiwatts unit the PV array and in this Installation Guide PV arrays produce electrical energy when exposed to light and thus can create an electrical shock hazard Wiring of the PV arrays should only be performed by qualified personnel According to these basic ...

Страница 6: ...age Configuration 21 4 Mounting 23 4 1 Choosing a Mounting Location 23 4 2 Dimensions and Required Clearances 25 4 3 Mounting Procedure 26 4 3 1 Mounting onto the wall 26 4 3 2 Mounting the Digiwatts Unit to the Bracket 28 5 Wiring the Digiwatts unit 29 5 1 Sequence of Connecting 31 5 2 Opening the Digiwatts 32 5 3 Wiring the AC Output 33 5 3 1 AC Connection Requirement 33 5 3 2 Connecting the AC ...

Страница 7: ... Status Messages on the LCD Display 43 7 2 1 Activation of the LCD Backlight 43 7 2 2 Switching interface 44 7 2 3 Operation interface 44 7 2 4 Time power curve interface 45 7 2 5 Detail Information Interface 46 8 Troubleshooting 47 8 1 General 47 8 2 Error Messages 48 9 Technical Specifications 51 9 1 Specifications 51 9 2 Trip Limits Trip Times 52 9 3 Torque Values and Wire Sizes 52 ...

Страница 8: ...Guide before starting the installation WARNING Lethal voltages are present at various points in a PV system For safety reasons it is recommended that only qualified personnel can install and operate this equipment Read and understand all the instructions contained in this manual and become familiar with the safety symbols in the relevant paragraphs before you install and commission the equipment 1...

Страница 9: ...e PV power system An example of basic PV power system components is shown in the Figure 1 1 Figure 1 1 Digiwatts System is installed in a Utility Interactive PV System Information Policies vary from one utility company to another Consult with a representative of the local utility company before designing and installing a PV system NOTICE Any other or additional use is not permitted except the inte...

Страница 10: ...m A boost circuit raises input DC voltage within the inverter Then a Maximum Power Point MPP tracker ensures that maximum power is extracted from the PV arrays Afterwards a full bridge inverter circuit converts DC power to AC power which is then output from the unit Figure 1 2 Electrical Block Diagram DSP1 DSP2 Boost Full bridge DC DC L N Relay1 Relay2 LCD ...

Страница 11: ...andard communication interface 2 Network terminal Standard network interface 3 DC input Input port for 1 2 inch conduit 4 DC input Input port for 3 4 inch conduit 5 AC output Output port for 3 4 inch conduit 6 AC output Output port for 1 2 inch conduit 7 Switch Disconnect inverter from PV array and power grid 8 LCD screen Running data is displayed on the LCD screen 1 2 3 8 7 6 5 4 ...

Страница 12: ...N3000US Apr 2013 11 Dimensions and weight Figure 1 4 Dimensions of the Digiwatts unit Table 1 2 Dimensions and weight Type Depth mm Inch Width mm Inch Height mm Inch Weight kg lb RN3000US 174 6 8 469 18 5 488 19 2 23 50 7 ...

Страница 13: ...though the Digiwatts unit can be installed where temperatures reach up to 60 C it is strongly recommend that it be installed where ambient temperature in the range of 0 40 C 1 5 Safety 1 5 1 Protection and Criterion Anti Islanding Protection Islanding is a condition that can occur if the utility grid is disconnected while the Digiwatts system is operating and the remaining load is resonant at 60 H...

Страница 14: ...rrent greater than 30mA is detected the Digiwatts system will shut down and display a fault condition on the LCD user interface display AC Overcurrent Protection The system will detect the AC current real time Should the AC current exceed 20 ampere the Digiwatts system will shut down and display a fault condition on the LCD user interface display Safety criterion ETL is the standard applied by Ele...

Страница 15: ... play with the appliance CAUTION Risk of Burn Injuries Parts of the enclosure can become hot The product can generate heat during operation Avoid coming into contact with the product during operation CAUTION Possible damage to health as a result of the effects of electro magnetic radiation Do not stay closer than 20 cm to the inverter for an extended of time CAUTION Risk of Electric Shock Do not r...

Страница 16: ...nued protection against fire replace fuses only with units of same type and ratings CAUTION Risk of electric shock form energy stored in capacitor Do not remove cover until 15 minutes after disconnecting all sources of supply CAUTION The Digiwatts system shall not be connected to a battery due to lack of over current protection provided in the unit ...

Страница 17: ... operation Read the product s documentation before working on it Follow all safety precautions and instructions as described in the documentation The inverter can be installed outdoors Direct Current DC Alternating Current AC Certified safety The inverter complies with the requirements of Equipment and Product Safety Acts in USA and Canada Symbol for equipment grounding conductor The inverter is t...

Страница 18: ...unting location and detailed mounting instructions to insure optimum performance Cautions and warnings to be followed to avoid injury and or equipment damage Section 4 Wiring Guidelines for selecting the correct wire sizes Cautions and warnings that should be followed to avoid injury and or equipment damage Step by step instructions for wiring the Digiwatts system to a PV array and the utility gri...

Страница 19: ...n the receiving documents making sure to obtain the carrier acknowledgment with his her full signature Open the shipping box and inspect the contents for internal damage While unpacking be careful not to discard any equipment parts or manuals If any damage is detected call the delivering carrier to determine the appropriate action Save all shipping material in the event the carrier sends an inspec...

Страница 20: ...istance with a damaged Digiwatts unit contact Renovo Power Contact information for Renovo Power Systems is provided below North America Renovo Power Systems LLC 416 W Huron St STE 20 Ann Arbor MI 48103 Tel 855 RENOVO1 736 6861 Fax 888 810 6454 http www renovo usa com Asia Renovo Power Systems Shanghai Co Ltd 3rd floor Haiye Building No 518 Fengpu Av Fengxian Shanghai China Tel 86 021 375 25 081 00...

Страница 21: ...very Contents Item Qty Description Note A 1 RN3000US Digiwatts Inverter unit B 1 Bracket Mounting inverter onto the wall C 1 M6 machine screws Fastening Digiwatts system onto the bracket D 1 User manual Installation and operation instructions E 1 Warranty card F 1 Packing list ...

Страница 22: ...ility interconnection at 240V AC Figure 3 1 Utility Interconnection Configurations Information When using 208V 240V Delta Corner grounded grids connect the N terminal to the grounded corner Configure Digiwatts system to 208V AC output Use the following procedure to configure Digiwatts system to 208V AC output 1 Open the disconnect housing cover Refer to 5 2 2 Disconnect the main housing cover grou...

Страница 23: ... main board Figure 3 3 Turn Switch 1 to ON position Figure 3 4 5 Close the main housing cover 6 Fasten the main housing cover grounding wire 7 Close the disconnect housing Figure 3 2 Disconnect the main housing cover grounding wire Figure 3 3 Position of the DIP switch ...

Страница 24: ...s for mounting a Digiwatts inverter WARNING The Digiwatts unit weighs up to 23kg To avoid injury be sure to use proper lifting techniques and secure the help of someone to assist in the unpacking and installation of the inverter Information It is required that the inverter be mounted so that the rating label on the side of the inverter is visible 4 1 Choosing a Mounting Location Consider the follo...

Страница 25: ...nit to the sun directly This may reduce the output power due to high temperature Mount the inverter at proper height from ground level to ensure that display and status LEDs are easy to read at least 1000mm from ground The inverter should be installed in a location that is inaccessible to children The Digiwatts unit emits a slight vibrating noise when operating This vibration is normal and has no ...

Страница 26: ...you are installing the Digiwatts unit in a cabinet closet or other relative enclosed area sufficient air circulation must be provided to dissipate the heat generated by the inverter Figure 4 2 shows the outer dimensions of the Digiwatts unit The unit must be mounted with a clearance of at least 50cm at all points but 100cm bottom side ...

Страница 27: ...cm of clearance is sufficient The National Electrical Code may require increased working clearances 4 3 Mounting Procedure 4 3 1 Mounting onto the wall Mounting bracket The Digiwatts unit is shipped with bracket for mounting Make sure that the wall you choose to mount the Digiwatts unit on is sturdy enough to support its weight 23kg over a long period of time and that the wall is plumb Be sure to ...

Страница 28: ...Installation Guide RN3000US Apr 2013 27 Figure 4 3 Dimensions of the Mounting Bracket Mounting onto the wall Figure 4 4 Fasten the Bracket against the Wall ...

Страница 29: ...he Digiwatts unit once wall bracket is secured to the wall 1 Carefully hook the slots on the rear of the Digiwatts case onto corresponding vertical tabs of the wall bracket Figure 4 5 Mounting the Inverter to Bracket WARNING The Digiwatts unit weighs up to 23kg To avoid injury be sure to use proper lifting techniques and secure the help of someone to assist in the unpacking and installation of the...

Страница 30: ...and the utility grid To complete the installation in a safe and efficient manner complete the steps in the order that they appear WARNING Before connecting or operating the Digiwatts unit read all of the instructions cautions and warnings on the Digiwatts unit the PV array and in this Installation Guide WARNING You must connect the wires that carry the AC voltage from the Digiwatts unit to the uti...

Страница 31: ...equired by the CANADIAN ELECTRICAL CODE PART 1 It is the responsibility of the installer to maintain this isolation The Photovoltaic System Grounding shall be installed per the requirements of sections 690 41 through 690 47 of the National Electric Code ANSI NFPA 70 It is the responsibility of the installer to meet these requirements AC Grounding The Digiwatts unit must be connected to the AC grou...

Страница 32: ...nit 3 Wire from the PV DC breaker to the Digiwatts unit 4 Turn the DC switches and or breakers ON 5 Turn the AC switches and or breakers ON 6 To disconnect the Digiwatts unit first turn OFF all AC breakers and then all DC breakers The AC system should always be disconnected before the DC system WARNING Always wait a minimum of 15 minutes for stored potentials in the Digiwatts unit to discharge com...

Страница 33: ...ck washers from the disconnect housing cover 3 Open the cover smoothly CAUTION Be careful not to misplace the machine screws or the lock washers as all four screws and lock washers are required to ensure that the cover is grounded properly and is fully sealed to the case Handle the cover carefully as even seemingly minor damage to the cover could result in an inadequate seal between the cover and ...

Страница 34: ...s and with the National Electrical Code NEC ANSI NFPA 70 Use 8AWG 12AWG 105 C copper wire for all AC wiring connections to the Digiwatts Voltage drop and other considerations may dictate that larger size wires be used Use only solid or stranded wire but not fine stranded wire WARNING The National Electrical Code NEC states that the inverter must be connected to a dedicated circuit and that no othe...

Страница 35: ... can cause serious injury and or death 5 3 2 Connecting the AC Wires 1 Turn OFF the main breaker in the main utility breaker box 2 Remove the disconnect housing cover 3 If you are replacing an existing inverter disconnect the wires for the AC line you are working within the breaker box 4 Pull the AC wires through the conduit from the interior AC terminal of the Digiwatts unit 5 Connect the AC equi...

Страница 36: ...5 C copper wire for all DC wiring connections to the Digiwatts Voltage drop and other considerations may dictate that larger size wires be used Use only solid or stranded wire but not fine stranded wire WARNING Any additional DC disconnect for the inverter must have a minimum rating of 600VDC and 25A continuous Information Series fusing may be required depending on the type of PV module used in th...

Страница 37: ... PV strings before you connect the DC wires to the Digiwatts unit Applying an open circuit DC input voltage that exceeds the maximum DC input voltage range will cause irreversible damage to the Digiwatts unit and void the warranty Always configure the DC input voltage range correctly before connecting the DC input wires from the PV array to the Digiwatts unit The PV modules connected to Digiwatts ...

Страница 38: ...nd ground faults 5 4 2 Connecting the DC Wires 1 Verify that the AC breaker s are OFF 2 Verify that the DC breaker is OFF 3 Pull the DC wires from the DC breaker through the conduit into the interior of the Digiwatts unit 4 Connect the positive and negative DC wire to the terminal labeled DC and DC in the Digiwatts unit 5 Connect the PV array ground wire to the PE terminal labeled within the Digiw...

Страница 39: ...hould not be longer than 50 meters 5 5 1 RS485 Communication RS485 is a communication standard for bidirectional transmission of data between one or more Digiwatts units and a PC Figure 5 6 RS485 Communication Wiring Wiring procedure 1 A resistance with 120Ω is connected at the initiating terminal of RS485 bus 2 Plug the connector of the RS485 cable into corresponding RS485 terminal of Inverter 1 ...

Страница 40: ...g to avoid ground loops 5 5 2 Network communication After connected successfully to the internet user can log on the monitoring website to monitor the operating state of Digiwatts and observe real time and historical functional information via PC Connecting procedure 1 Connect the router to PC and internet 2 Configure the router to DHCP Dynamic Host Configuration Protocol via PC 3 Connect the Digi...

Страница 41: ...s completely sealed you must be sure no moisture is trapped inside the enclosure when securing the lid CAUTION Be careful not to misplace the machine screws or the gland that attach the cover to the case as all four screws and gland are required to ensure that the cover is grounded properly and is fully sealed to the case Handle the cover carefully as even seemingly minor damage to the cover could...

Страница 42: ...d holes in the case and turn them until they are finger tight Be careful not to cross thread any of the screws Do not use power tools to start the screws 6 Verify that the cover is in the correct position and that the seal is in place between the case and the cover 7 Tighten the cover screws 6 Commissioning WARNING Follow the steps in the commissioning procedure in the order they are presented Dev...

Страница 43: ...tes prior to starting Information If the Digiwatts unit is not operating as expected after the commissioning procedure has been completed refer to section 7 and 8 Information If there is adequate solar irradiation and the resulting PV input voltage is greater than 150V DC the Digiwatts unit will automatically begin feeding power to the utility grid Information The Digiwatts unit operates from the ...

Страница 44: ... inverter has determined that there is enough voltage from the array to operate The Digiwatts unit adjusts the voltage and current from the PV array to maximize PV output power Fault mode The Stop LED is on the other two are off The inverter has determined that failures occurred either inside the inverter or somewhere in the PV system or power grid The inverter will not operate until failures are ...

Страница 45: ...ing on the lid while the backlight is activated The interface can be switched between Operation Interface Time power Curve Interface and Detail Information Interface 7 2 3 Operation interface Figure 7 1 Operation interface Table 7 1 Operation interface Descriptions Item Parameter Description 1 Fault Fault messages not appears if none ...

Страница 46: ...day 7 E Total Total generated energy since installation 8 Output voltage Voltage feeding to grid 9 Output current Current feeding to grid 7 2 4 Time power curve interface Figure 7 2 Time power curve Table 7 2 Time power curve interface description Item Parameter Description 1 Y axis Power feeding to grid 2 Max power point Present max power point The first figure is time the second is power 3 Time ...

Страница 47: ...nterface Table 7 3 Detail Information Interface descriptions Item Parameter Description 1 S Ugrid Grid voltage 2 S Igrid Grid current 3 S UpvIN PV voltage 4 S IpvIN PV current 5 S UdcIN DC bus voltage 6 S Ilost Operating leakage current 7 S Temp Temperature in the case 8 S Idc Direct current feedback to grid 9 Grid Power Present output power of inverter ...

Страница 48: ..._ _h _ _m 24 Dest IP address of the server 25 Local IP address of the inverter 26 SN Serial number of the inverter Parameters with M are from Master DSP with S are from Slave DSP 8 Troubleshooting 8 1 General Our quality control program assures that each inverter is manufactured to exact specifications and is thoroughly verified prior to leaving the factory In the unlikely event difficulty is enco...

Страница 49: ...n you reproduce the failure If yes how Has this problem occurred in the past What were the ambient conditions when the problem occurred Information Regarding the PV Modules Manufacturer name and model number of the PV module Output power of the module Open circuit voltage Voc of the module Number of modules in each string If it becomes necessary to send the Digiwatts unit back to the manufacturer ...

Страница 50: ...ut current sensor error M_Ilost_H Residual current is too high M_Ilost_S Residual current sensor error M_ISO Insulation resistance is too low M_Iso_Relay Insulation detection circuit error M_Over_load Over load M_Pll Phase locked loop error M_Power_H Running power is too high M_PV_UNSTA PV input is unstable M_RELAY Relay error M_RESTART Coercively restart M_S_MON Monitoring error M_SPI_Err SPI com...

Страница 51: ...p_Ig Grid current comparison error S_ Cmp_Ug Grid voltage comparison error S_Freq_H Frequency of grid is too high S_Freq_L Frequency of grid is too low S_Idc_H DC current of grid is too high S_Iga_H Instantaneous value of AC current is too high S_IgR_H RMS value of output AC current is too high S_Iin_H Input current is too high S_Ilost_H Residual current is too high S_Power_H Running power is too ...

Страница 52: ...tage AC 208V 240V I Rated output frequency AC 60Hz J Maximum continuous output current AC 14 4 12 5A K Maximum continuous output power AC 3000W L MPP voltage range DC 200 440 V M Start up input voltage DC 150V N Precision of voltage 1V O Precision of current 0 1A P Precision of frequency 0 01Hz Q Peak CEC inverter efficiency 97 96 5 R Ingress protection Type 3R S Material of enclosure 1 5mm stainl...

Страница 53: ... Voltages Line to Neutral V Trip Times s 50 119 121 max 0 1602 88 210 212 max 2 002 110 261 263 max 1 002 240 120 287 289 max 0 1602 NOTE This unit or system is provided with fixed trip limits and shall not be aggregated above 30 kW on a single Point of Common Connection 9 3 Torque Values and Wire Sizes Terminal Install Torque Nm ft lbs Wire Size AC DC Terminal Blocks Phoenix 8AWG 12AWG Cover Mach...

Страница 54: ...Installation Guide RN3000US Apr 2013 53 Note ...

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