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Installation

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Install

ation

2

Electrical connections

General safety

DANGER

PV solar arrays produce hazardous voltages and currents when exposed to light, which
can create an electrical shock hazard. Use dark opaque sheets to cover the PV solar
array before wiring or connecting cable terminations.

WARNING

Read all of these instructions, cautions, and warnings for the inverter and associated PV array.

WARNING

Installation and commissioning must be performed by a licensed electrician in accordance with
local, state, and National Electrical Code ANSI/NFPA 70 requirements. Use 10 AWG or greater
90°C (194 °F), copper solid or stranded wire for all DC and AC wiring to the inverter to optimize

system efficiency .

WARNING

Before connecting the inverter to the AC distribution grid, approval must be received by
appropriate local utility as required by national and state interconnection regulations. The inverter

must be connected only by qualified personnel.

CAUTION

Do not attempt to open or repair the inverter, as it is factory sealed to maintain Type 4 rating.
Opening the inverter will void the warranty.

CAUTION

The PV input circuits are isolated from the enclosure. The PV system Grounding Electrode
Conductor (GEC) when required by National Electric Code (NEC), ANSI/NFPA 70 Sections 690.41,
690.42, and 690.43 is the responsibility of the installer.

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Содержание A005KEEN261

Страница 1: ...MANUAL Energy Storage System Please read this manual carefully before installing your equipment and retain it for future reference MODEL A005KEEN261 D007KEEN261 Copyright 2019 LG Electronics Inc All Rights Reserved 19 02 2019 ...

Страница 2: ... through the entire manual and note all precautionary statements All US electrical installations must comply and be in accordance with all state local and utility regulations and National Electrical Code ANSI NFPA 70 Installations in Canada must be done in accordance with applicable Canadian standards Safety symbols and terminology DANGER DANGER indicates a hazardous situation which will result in...

Страница 3: ... of these instructions cautions and warnings for the LG Electronics ESS inverter and associated ESS equipment PV panel RSD Battery pack ATS Energy meter etc documentation y y Approval must be received by the appropriate local utility as required by national and state interconnection regulations before connecting the LG Electronics ESS inverter to the AC distribution grid y y The LG Electronics ESS...

Страница 4: ...ircuit breaker requirements 21 Grounding electrode conductor GEC 21 Lightning and surge protection 21 PV string considerations 22 Inverter connections 23 Opening the wiring box cover 24 Wiring box conduit plugs 25 PV array string input connections Only for DC coupled type 27 PV switch LOCK out and TAG out procedure 29 Battery wire connections 30 Battery communication cable connection 31 Battery pa...

Страница 5: ...ering the PCS Mobile App 51 Commissioning the PV system 52 LED Indication 52 Button 55 Inverter turn on procedure 56 Inverter turn off procedure 56 Appendix Maintenance 57 Production information 57 Repair 57 Decommissioning 57 Inspecting regularly 58 Disposing of the product 58 Contact 58 Troubleshooting 59 LGE Open Source Software Notice 61 Specifications 62 FCC compliance information 66 USA 66 C...

Страница 6: ...f UL1741 UL 1741 SA and IEEE 1547 System In the following description the precise functions are explained to the installer as well as the user which are required for the installation operational start up and handling of the LG Electronics ESS inverter The LG Electronics ESS inverter converts direct current from the solar cells into alternating current This enables you to feed your self produced so...

Страница 7: ...he PV modules work in MPPT mode or power reduction mode according to system operational mode The maximum number of PV strings is three For the AC coupled system there is the option to have no solar modules connected to the LG Electronics ESS inverter at all and the PV power option will be deactivated Battery Pack The Battery Pack can store surplus energy generated from rooftop solar modules for us...

Страница 8: ...or smart energy management applications including self consumption zero export or Time of Use Rates TOU The meter communicates with the inverter via RS485 Grid 240 V and 208 V grid are supported This can be configured via the mobile App Android iOS APP A powerful tool for monitoring configuration or diagnostics the App is connected to the inverter via Bluetooth LG Electronics Cloud The inverter co...

Страница 9: ...ndicate errors or status d Mounting Plate The inverter comes with a mounting plate that allows easy assembly of the inverter to a wall e Wiring Box This is the compartment where all the wiring for the inverter inputs and outputs plus the RS485 communication are done f Conduit Plugs There are 5 3 4 conduit openings and 2 1 2 conduit openings Each conduit opening comes fitted with a conduit plug tha...

Страница 10: ...labels can be found on the models The inverter serial number can be found here Please note that capital letters in Serial Number are used as placeholders to indicate the variable information for the LG Electronics ESS The main caution labels in English and French are on the right side of the inverter Date Location of type label ...

Страница 11: ...Getting Started 11 Getting Started 1 3 54 6 32 160 5 mm 9 84 250 mm 13 38 340 mm 23 23 590 mm 16 73 425 mm 90 mm 2 77 70 5 mm Dimensions of ESS inverters ...

Страница 12: ...d AC terminal e RS485 communication ports f CAN and RS485 communication ports g Ethernet and RS485 communication ports Required torques for wiring box terminals Terminals Wire size permitted Torque 3 Grounding 10 8 AWG 16 in lbs Exception Specified torque marked on the terminal block All other terminals are spring type ...

Страница 13: ...ional Electric Code requirements NEC and local AHJ inspector requirements In Canada the installation and wiring methods used must comply with the Canadian Electric Code parts I and II and the local AHJ inspector requirements System grounding when required by the Canadian Electrical Code Part 1 is the responsibility of the installer CAUTION The secondary short circuit current rating is increased at...

Страница 14: ...ns a Correct inverter model name b Mounting plate c Manual d Wi Fi antenna Visually inspect the LG Electronics ESS inverter for any physical damage such as a bent heatsink fin and dented chassis If the inverter appears to be damaged or if the inverter needs to be returned please contact your local LG Electronics representative WARNING No user serviceable parts are contained in the inverter section...

Страница 15: ...the mounting hardware meets the appropriate building code y y Avoid installation on resonating surfaces light construction walls etc y y Installation can be indoors or in protected outdoor areas y y Avoid direct sun exposure y y Ensure ambient temperature is within 22 F to 149 F 30 C to 65 C for optimal efficiency of the system y y Despite having a Type 4 enclosure with a soiling category III cert...

Страница 16: ... The National Electric Code may require significantly larger working clearances see NEC Section 110 26 4 72 120mm 2 09 53 mm 5 91 150mm 2 09 53 mm 1 97 50 mm 1 50 38 mm 0 256 6 5mm 6 88 174 8 mm Dimension drawing of mounting plate A Mount the mounting plate to the wall with at least 4 screws and anchors Ø 1 4 6mm You can use the mounting plate as a template for marking the positions of the borehol...

Страница 17: ...mended for mounting on wood framed walls C Align the mounting plate over the pilot holes and install the mounting hardware to the mounting surface Please tighten to the recommended torque necessary to hold the mounting plate firmly to the wall surface type D As the inverters are heavy they should be lifted out of the cardboard container by at least two persons E With at least one person on each si...

Страница 18: ...s Use 10 AWG or greater 90 C 194 F copper solid or stranded wire for all DC and AC wiring to the inverter to optimize system efficiency WARNING Before connecting the inverter to the AC distribution grid approval must be received by appropriate local utility as required by national and state interconnection regulations The inverter must be connected only by qualified personnel CAUTION Do not attemp...

Страница 19: ...nverters should never be connected to a 120 V AC utility service NEC 705 12 requires that the inverter be connected to a dedicated circuit with no other outlets or devices connected to the same circuit AC connection voltage and frequency limits Voltage range for 208 V nominal line to line 185 V 226 V Voltage range for 240 V nominal line to line 213 V 262 V Frequency Range 59 3 Hz 60 5 Hz Public gr...

Страница 20: ...Installation 20 Installation 2 208 V 120 V WYE AC Grid 240 V Inverter AC Grid 240 V 120 V Stinger AC Grid Public Grid Configuration NOT Allowed 480 V DELTA AC Grid 480 V 277 V WYE AC Grid ...

Страница 21: ...the requirement of a dedicated circuit breaker in the building panelboard for each inverter if there exists a dedicated PV system AC sub panel that is used to combine multiple inverters In this case only one breaker at the main building service panelboard should be installed for a multiple inverter installation utilizing a dedicated PV system AC sub panel Grounding electrode conductor GEC Per NEC ...

Страница 22: ...ING Use the PV module manufacturer specified V Temp coefficient or the temperature multiplication factors given in the table in NEC 690 7 to ensure PV string voltage is less than 450 V DC The maximum inverter PV input voltage for all possible weather conditions varies based on the location of installation INFO System wiring voltage losses should be no greater than 1 to 2 percent for optimal system...

Страница 23: ... with the National Electrical Code NEC ANSI NFPA 70 and Compliance is the responsibility of the installer WARNING Ensure no live voltages are present on PV input and AC output circuits and verify that the DC disconnect AC disconnect and dedicated AC branch circuit breaker are in the OFF position before inverter installation WARNING Inverter warranty is VOID if the DC input voltage exceeds the inve...

Страница 24: ...installation M4 0 7 X 16mm Removing the wiring box cover A Place DC Disconnect in OFF position Please note the cover cannot be removed when the DC Disconnect is in the ON position B Remove the 4 cover screws indicated above with a hex screw driver C Lift the cover upward and place off to the side Required torques for wiring box cover Part Description Torque Wiring Box Cover Screws M4 screws Hex he...

Страница 25: ...e the wiring compartment conduit openings as the wiring box enclosure will be damaged which will void the inverter warranty The conduit plugs are removed by placing a flat blade screwdriver in the slot on the conduit plug face and turning while gripping the nut on the inside of the enclosure to ensure it does not slip Unscrew the nut from the conduit plug and slip the conduit plug out of the condu...

Страница 26: ... wiring routing Conduit fittings need to be watertight with either NEMA4 4X 6 or 6X rated and an insulated type is preferred Once conduit and fittings are installed route wiring through conduit and fitting allowing a 6 15 24 cm strain relief loop within the wiring box compartment ...

Страница 27: ...c shock hazard The DC conductors of this photovoltaic system are ungrounded but will become intermittently grounded without indication when the inverter measures the PV array isolation CAUTION Verify DC conductor voltage polarity with voltage meter because damage to the inverter could result if the incorrect DC input polarity is connected CAUTION Risk of damage Be sure that the polarity is correct...

Страница 28: ...t the negative lead from each PV array string to PV Negative Terminals d e f in the wiring box compartment D Verify that connections for the DC wiring board assembly are properly wired in the wiring box compartment RED wire goes to PV Positive Terminal BLACK wire goes to PV Negative Terminal NOTICE y y Connect to earth grounding first y y Electrical installations must be done in accordance with th...

Страница 29: ...wn below B Attach a padlock After attaching the lock attempt to turn the circuit breaker to the ON position The lock should prevent the circuit breaker from being turned on C Attach a tag to the locking plate The tag should contain the following information y y WHO locked the circuit breaker out y y WHY the circuit breaker is locked out y y WHEN the circuit breaker was locked out y y The contact i...

Страница 30: ...gth required B Connect the positive lead to Battery Positive Terminals a C Connect the negative lead to Battery Negative Terminals b D Verify that connections to the DC wiring board assembly are properly wired NOTICE You must ensure that the positive lead connects to the positive Terminal and the negative lead connects to the negative Terminal You may change the fuse as shown in the following pict...

Страница 31: ...connection B A EN GND B A EN GND Wiring box of inverters A Strip four wires of the battery pack communication cable and insert stripped wire ends to the corresponding wire hole on the plug B Match the names in the figure with the connectors on battery pack abcd ...

Страница 32: ...ttery cables are recommended to be 12 8 AWG a b c A Connect the power cables to the corresponding terminals aGround terminal b Negative teminal c Positive terminal Power terminal block GND y y Max cable length 10 m 35 ft y y Cable Type 4 10 mm2 12 8 AWG y y DC600 V insulated abcd B Connect the communication cables to the corresponding terminals aGround terminal GND b ENABLE_High terminal EN c RS48...

Страница 33: ...uit breaker CAUTION Please turn the switch on or off by pushing the middle of the bar where SHT31 and Ex9BP are combined It is forbidden to push either end side of the bar Any improper use could damage the product Connect disconnect the wire to connector sequence A Make sure the CB switch and the auxiliary switch are in the OFF position If removing power cables check for voltage at power cable ter...

Страница 34: ...energy meter for more information about energy meter installation INFO AC wire cables are recommended to be 22 18 AWG 0 34 0 75 mm2 Energy meter communication cables are recommended to be 24 18 AWG 0 25 0 75 mm2 a RS485 B b RS485 A c L2 CT d L2 CT e L1 CT f L1 CT g L1 Terminal h L2 Terminal i N Terminal j Ground NOTICE Clamp the CT connected to L1 CT around the wire connected to ØL1 Clamp the CT c...

Страница 35: ...y Grid Household B A EN GND L1 L2 N Power Distribution Box Energy meter connection case2 Utility Grid Household B A EN GND L1 L2 N L1 L2 N Power Distribution Box Additional CT is required CT s only offered in one pair Please contact the service center before installing ...

Страница 36: ...ED LED LED color Function Indication Troubleshooting RUN Green ON for 3 seconds No current Flashing ON OFF for 1 second Positive power Red Flashing ON OFF for 1 second Negative power Check for reversed CTs swapped CT wires or CTs not matched with the lines Flashing with green LED High voltage 130 V Check the line voltages and the meter rating Flashing with yellow LED Low voltage 70 V Yellow Flashi...

Страница 37: ...y meter connections Inverter Side A Strip two wires of the energy meter cable and insert stripped wire ends to the corresponding wire hole on the plug B Match the names in the figure with the connectors on the energy meter B A EN GND B A ...

Страница 38: ...and dedicated AC branch circuit breaker are in the OFF position before inverter installation y y Verify that dedicated 2 pole 240 V AC or 208 V AC circuit breaker in the building electrical service panel is turned off INFO All terminals accept solid or stranded copper DC 14 8 AWG wire AC 14 6 AWG wire INFO The AC output neutral is not bonded to ground in the inverter 6 15 24 cm 0 7 1 78 cm Conduit...

Страница 39: ...ocal AHJ close enough to the inverter B Install conduit fitting and conduit into the wiring box compartment from AC disconnect or utility service panel C Loosely fit the conduit into the inverter s open conduit fitting and the DC disconnect or wiring box conduit fitting and then thread the inverter s AC output wires through the conduit D Route AC wiring through conduit and verify that the exposed ...

Страница 40: ...f torque for all above connections NOTICE Stranded copper wire should be checked so that all strands go into the terminal opening NOTICE If the grid type with Neutral connection is selected please double check whether the Neutral wire is connected reliably An unsuccessful Neutral wire connection will make the unit fail to feed in power to the grid because of the wrong phase voltage detection B A E...

Страница 41: ...atus when mounting and wiring y y 2x 3 4 conduit holes are provided 0 7 1 78 cm C AC Wires connection Install 3 4 1 78 cm conduit into the conduit hole D Route AC wires through the conduit and strip the wire end to 3 4 1 78 cm Inverter L1 N L2 Grid L1 N L2 Load L1 N L2 E Use a 3 16 5 mm flat blade screw driver to push the spring of each terminal and connect the wires L1 N L2 to the connectors acco...

Страница 42: ...als accept solid or stranded copper 10 4 AWG wire recommended screw torque is 26 in lbs 2 9 Nm NOTICE y y Verify the connection firmly again The compatible wiring gauge is 10 4 AWG It should have a capacity based on NEC 2017 article 690 8 and the use of 194 F 90 C copper wire is recommended y y Refer to the manual included in the ATS Box for more detailed information on wire connections ...

Страница 43: ...ter etc documentation Interface connection communication The LG Electronics ESS inverters offer an EIA RS485 communication interface that can address up to 31 daisy chained inverters In this case RS485 port 1 and port 2 can only use the pin 7 and pin 8 that is RS485 TX and RS485 RX CAN and RS485 communication ports Ethernet and RS485 communication ports RS485 communication ports communication port...

Страница 44: ...Installation 44 Installation 2 Ethernet and 485 communication ports RS485 communication ports Energy meter and Battery ...

Страница 45: ...ion 2 Wi Fi antenna connection A Take out the antenna Make sure the sealant is installed well B Take the cover off with tools C Insert the antenna into the same hole and tighten with nut inside D Connect the antenna with module ...

Страница 46: ...fessionals App may not work y y LG EnerVu2 Professionals App will be available in the version of the software as follows Android O S Lollipop 5 0 or higher iOS O S iPhone 6 9 0 or higher About the main screen The main screen displays system and cloud connection in the connections menu area You can check the settings and information in the setting menu areas Inbox menu y y Alert y y Message y y New...

Страница 47: ...code on the right side of the ESS unit y y The system owner must create a LG ESS account before accessing the system Visit EnerVu2 page at http enervu lg solar com and sign up to create an account A Run LG EnerVu2 Professionals App on your mobile device B Sign in on to the App with the account you have created If you have signed up before please go to the next step C Tap LG ESS button on the main ...

Страница 48: ...D Input the date code and select OK to connect to the system The date code is a 4 digit number and is printed on the right side of the PCS Date E When the connection is successful the event screen appears as shown in the figure ...

Страница 49: ... connection and wired connection can be selected at the same time The wired connection is connected first y y This unit does not support a static IP setting y y If you are using a wired connection you can use the wired Ethernet connection to your home network without any setup y y You can check whether the internet connection is normal through the Network Network Info menu ...

Страница 50: ...n be set one by one Grid Type 240 V AC and 208 V AC grid are supported Grid Profile You can make detailed settings related to Rule21 CAUTION The grid profile must be set correctly LG Electronics does not accept liability for a missing or incorrect grid profile If you are not sure which grid profile data set is valid for your grid or purpose contact your grid operator for information on which grid ...

Страница 51: ...ap New System button on the event screen B Fill in the System Home owner information If you click the Save button an invitation e mail or completion notice of registration will be sent to the homeowner s email typed in Owner Info and the system will be created ...

Страница 52: ...hat the dedicated 2 pole 240 V AC or 208 V AC circuit breaker in the building electrical service panelboard is turned off NOTICE Disconnect in the OFF position and the PV input polarity once more simply by carefully using a 600 V DC rated digital volt meter and probing the positive and negative PV array connections LED Indication There are five LEDs in the front side of the inverter LED Logo LED S...

Страница 53: ...t mode Battery comm fail BAT Yellow ON constantly on Battery communication timeout Battery standby BAT Yellow BLINK 1s on 1s off Battery is in standby mode Battery low power BAT Green BLINK 1s on 4s off Absolute battery power is lower than 50W Battery normal BAT Green ON constantly on Battery is in normal operation COMM LED BLE fail COMM Red ON constantly on BLE is in fault mode APP Connected COMM...

Страница 54: ...n will not be executed 3 s later after the button is released If the button is pressed again within 3 s the former action will be cancelled and start triggering of new expected action y y LED indication behavior will be ended after 5 s later after the button is released LED signals INFO LED is blinking with Green and 0 2 s on and 0 2 s off Message Reset button is clicked for more than 2 5 s and le...

Страница 55: ... functions Button Application Trigger condition Arc reset Clear arc fault Press the button for 3 5 seconds Arc self test If there is no arc fault run arc self test Press the button for 3 5 seconds Gateway reset Gateway reset to factory status Press the button for more than 10 seconds Arc Reset Button Position of Arc Reset Button ...

Страница 56: ...C disconnect turn on the AC disconnect B Check for inverter initialization four LED indicators are illuminated with Green C Turn on the Battery disconnect switch and circuit breaker D Turn on the DC PV disconnect switch turn to ON position E Refer to installation section for setup process that needs to be completed before the inverter can begin feeding power to the grid Inverter turn off procedure...

Страница 57: ...t are to be maintained or repaired by the operator or installer Opening the cover will void the warranty NOTICE The inverter contains no components that are to be maintained by the operator or installer Decommissioning DANGER Danger of death or severe injuries from dangerous voltage Disconnect the inverter from the grid before removing or inserting the AC connections DANGER Danger of death or seve...

Страница 58: ... a technician or authorized professionals Contact authorized dealer or where you purchased the LG Electronics ESS Disposing of the product When the product reaches to the end of its service life or a defect in the product is beyond repair dispose of the product according to the disposal regulations for electronic waste in your area Disposal of the product must be carried out by qualified personnel...

Страница 59: ...y found in the mobile app A Tap Support button on the main screen The event screen appears as shown in the figure B Tap ESS Event Guide button on the support screen The ESS event guide screen appears as shown in the figure Event messages are divided into three categories Battery PCS EMS ...

Страница 60: ...60 Appendix Appendix 4 C There is more information on troubleshooting by selecting the TS number on the Solutions tab ...

Страница 61: ...s offer is valid to anyone in receipt of this information Please be informed that this LG Electronics Inc product may contain open source software listed in the tables below Open Source License Copyright cJSON 1 6 0 MIT Copyright c 2009 2017 Dave Gamble and cJSON contributors FatFS 0 12 FatFS License Copyright C 2016 ChaN lwIP 2 0 0 BSD 3 Clause Copyright c 2001 2002 Swedish Institute of Computer ...

Страница 62: ...n take less than 5s MPPT Efficiency 99 6 Static 99 3 Dynamic DC Disconnect Integrated Input Terminal Spring Type Battery Input Output LG AC 5kW LG DC 7 6kW Compatible Battery Pack Size 9 8 to 19 6 kWh 77 F 25 C Max 2 in parallel Rated I O Power 5000 W 5000 W Peak I O Power 10 sec 6000 W 7000 W Acceptable Input Voltage Range Charge Discharge 400 450 V DC 350 430 V DC Rated I O Current Max Charge Di...

Страница 63: ...THD 3 Grid support compliance UL 1741 SA CA Rule 21 HECO Revenue Grade Meter Optional Built in RGM Output Terminal Spring Type Complies with ANSI C12 20 AC Output Off Grid Mode LG AC 5kW LG DC 7 6kW Output Pure Sine wave Voltage Maximum Output Power 5000 W Peak Output Power 10 sec 6000 W AC Output Voltage Range 240 V AC Maximum AC current 21 A Peak AC Current 10 sec 25 A Frequency Range 59 3 60 5 ...

Страница 64: ...5kW LG DC 7 6kW Dimensions W L H 425 X 590 X 150 mm Weight 21 kg 46 3 lb Cooling Natural Convection Enclosure Material Aluminum Alloy Installation Type Wall Mount Horizontal support Indoor and Outdoor Enclosure Protection NEMA Type 4 Warranty 10 years Interface LG AC 5kW LG DC 7 6kW Indicator 5 LEDs Protocol Modbus SunSpec Ethernet optional Standard IPv4 IP6 Supported Human Machine Interface HMI B...

Страница 65: ...re Safety UL1998 Grid IEEE1547 IEEE1547 1 EMC FCC part 15 Class B AFCI UL1699B Type 1 Integrated meter ANSI C12 20 meets 0 5 accuracy Grid support regulation California Rule 21 HECO Compliant Wireless module Specifications FCC ID Wifi 2AMVP VCB5001LNW Frequency Range 2412 MHz 2462 MHz Output Power Max IEEE 802 11b 18 56 dBm IEEE 802 11g 22 97 dBm IEEE 802 11n 22 68 dBm FCC ID Bluetooth S9NSPBTLERF...

Страница 66: ...enna Increase the separation between the equipment and the receiver Connect the equipment to an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this...

Страница 67: ...CAUSED BY UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT SUCH MODIFICATIONS COULD VOID THE USER S AUTHORITY TO OPERATE THE EQUIPMENT WARNING For product having the wireless function using 5 GHz frequency bands i the device for operation in the band 5150 5250 MHz is only for indoor use to reduce the potential for harmful interference to co channel mobile satellite systems ii for devices with detachab...

Страница 68: ...AVERTISSEMENTS Pour un produit doté de la fonction sans fil utilisant la bande de fréquences 5 GHz i les dispositifs fonctionnant dans la bande de 5 150 à 5 250 MHz sont réservés uniquement pour une utilisation à l intérieur afin de réduire les risques de brouillage préjudiciable aux systèmes de satellites mobiles utilisant les mêmes canaux ii pour les dispositifs munis d antennes amovibles le gai...

Страница 69: ...rating for modules and inverters based on the real environment that a system will be in CSA Abbreviation for the Canadian Standards Association DC Abbreviation for Direct Current EMC The Electro Magnetic Compatibility EMC concerns the technical and legal basics of the mutual influencing of electrical devices through electromagnetic fields caused by them in electrical engineering ESS Energy Storage...

Страница 70: ...power Nominal current Nominal current is the absorbed current in case of electrical devices if the device is supplied with the nominal voltage and yields its nominal power PE In electric systems and cables a protective earth conductor is frequently employed This is also called grounding wire protective grounding device soil grounding or PE protective earth Photovoltaics abbr PV The conversion of P...

Страница 71: ...her core Separate grid system Energy supply equipment which is completely independent of an interconnected grid String Designates a group of electrical PV modules connected in series UL Stands for Underwriters Laboratory a non profit organization that sets standards for different product categories and tests products to make sure they meet the standards VOC Open Circuit Voltage ...

Страница 72: ...The utility grid is black out Then existing solar inverter stopped 2 ESS go to backup mode starting discharging and make frequency and voltage 3 Existing solar inverter restart with soft start ramp It will be restarted within 5 minutes reconnection time 4 Existing solar inverter can generate power to feed backup loads 5 ESS decrease discharging power and existing solar inverter increase output pow...

Страница 73: ...ositive Terminals 14 8 1 2 N m 1 8 flat blade screwdriver b PV1 3 Negative Terminals c Battery Positive Terminals 12 8 d Battery Negative Terminals e AC terminals 14 6 f Ethernet Communication Port 24 18 3 32 flat blade screwdriver g RS485 Communication Ports h Grounding 10 8 1 8 N m Torx20 screwdriver Wiringbox cover 2 0 N m 0 7 mm hex screwdriver Energy meter conection Utility Grid Household B A...

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