Varta Pulse neo Series Operating Manual Download Page 82

Page: 82 / 148

Installation

Fault during initialisation

Correct the faults before continuing with initial
commissioning via the web-interface.

LED circle

Colour

Possible cause

Solution

ON/OFF button is
not pressed.

Press the ON/OFF
button

Hood incorrectly
installed

Open hood and install
according to instructions.

White

Fuse not switched-
on

Switch on the fuse.

No AC grid
connection

Check AC grid
connection and establish
as necessary.

Switch defective

Check the switch and
replace as necessary.

Summary of Contents for Pulse neo Series

Page 1: ...VARTA STORAGE GMBH OPERATING MANUAL VARTA pulse neo...

Page 2: ...Leerseite Pagina vuota Page blanche Blank page...

Page 3: ...VARTA Storage GmbH N rnberger Stra e 65 86720 N rdlingen Germany Phone 49 9081 240 86 60 info varta storage com www varta storage com Technical service technical service varta storage com Phone 49 90...

Page 4: ...Leerseite Pagina vuota Page blanche Blank page...

Page 5: ...your safety 17 1 2 1 Residual dangers 17 Intended use 18 1 3 1 Incorrect use 19 1 3 2 Prohibited use 19 Requirements for electricians 20 General hazard sources 21 Misuse 23 Safety equipment 24 Functio...

Page 6: ...Activation and deactivation 39 Indicators at the LED circle 40 Portal optional 41 Servicing and cleaning 42 Servicing 42 Cleaning 43 Fault damage 44 Indication of faults at the device 44 In case of da...

Page 7: ...distribution 58 Preparation of AC connection to building network 58 VARTA Split Core current sensor 60 PV current sensor optional 65 Preparation of installation 65 Suspension and connection of the en...

Page 8: ...eb interface 85 Login as installer 87 Login as end user 87 Change password 88 Password reset 88 Software configuration 89 10 9 1 Start page of the installation wizard 89 10 9 2 Basic settings 89 10 9...

Page 9: ...e inverter 101 11 4 3 Removing the battery inverter 101 11 4 4 Installing the battery inverter 102 11 4 5 Installing and removing the battery module 103 11 4 6 Installing the battery module 105 11 4 7...

Page 10: ...tents 10 Planning relocation 115 Relocation process 116 Commissioning after relocation 116 Documentation 117 User data 117 Verification of servicing 118 Verification of repairs and other work 132 Spar...

Page 11: ...n energy storage system of VARTA Storage GmbH We are pleased that you have selected one of our long lasting and high quality systems For use and handling of the storage system please carefully read th...

Page 12: ...m The manual is structured in such a way that all work can be performed by a qualified electrician certified by VARTA Storage GmbH The operating manual should be kept near the VARTA pulse neo and must...

Page 13: ...ents and system parts are marked as optional in this manual Please skip these sections of the manual if your energy storage system is not equipped with the respective parts VARTA Storage GmbH is aware...

Page 14: ...Safety instructions In this manual safety instructions are structured as follows 1 1 2 Warning levels The warning level is indicated by the signal word and the colour indicating the type and severity...

Page 15: ...ntially dangerous situations that can result in minor injury and or property damage CAUTION ATTENTION yellow Indicates potential situations that can result in property or environmental damage and dist...

Page 16: ...operating manual and at the device the following warning signs are used General warning sign Warning Electricity Warning Oxidising substances Warning Hand injury Warning Cutting hazard Warning Batter...

Page 17: ...ty at work WARNING Non compliance with safety instructions Incorrect use can lead to serious injuries Before use make sure that all safeguards are in good working order Not every situation can be desc...

Page 18: ...safety The device must not be changed or modified in any way Intended use VARTA pulse neo with its components has been manufactured according to the state of the art and product specific standards an...

Page 19: ...reatening Any application other than or exceeding the intended use of the energy storage system or its components may cause life threatening hazards 1 3 2 Prohibited use Do not sue the VARTA pulse neo...

Page 20: ...Storage GmbH The term qualified refers to personnel with relevant knowledge and skills in the area Thanks to special training expertise and experience as well as knowledge of applicable regulations th...

Page 21: ...mage at the device occur DANGER Contact with electric voltage Risk of death due to electric shock Always keep the energy storage system closed Observe any damage at the electric equipment Have defects...

Page 22: ...relative humidity in the room must not exceed 80 Do not take wet devices or components into operation Do not take devices or components that have gotten wet into operation Please contact VARTA Storag...

Page 23: ...rarily for maintenance purposes ATTENTION Objects on the system Risk of injury and damage to the system due to falling objects Do not place any objects on the energy storage system ATTENTION Access ob...

Page 24: ...ied by VARTA Storage The VARTA pulse neo energy storage system is equipped with several types of safety equipment This includes mains and system protection according to VDE AR N 4105 closed electrical...

Page 25: ...ces like CHP plants The energy storage system serves to increase the proportion of consumption of self generated electricity and the economic efficiency of photovoltaic systems If photovoltaic systems...

Page 26: ...ttery module is charged After the maximum storage capacity is reached or the maximum charging current is exceeded by the generated solar the excessive solar power is fed into the public grid If the cu...

Page 27: ...itions are complied with To prevent temperature derating of the energy storage system it should be ensured that the heat of the energy storage system can be dissipated to the ambient air Repeated temp...

Page 28: ...des 1 x Battery module 1 x Battery inverter 1 x Mounting plate 1 x Hood 1 x Preassembled cable set 1 x Operating manual 1 x Current sensor 50 A 20 m sensor cable RJ12 1 x AC connector 4 x Mounting scr...

Page 29: ...General information 29 VARTA pulse neo front view 1 Nameplate 2 ON OFF button 3 Screw positions...

Page 30: ...General information 30 System overview 1 Current sensor 4 Inverter for photovoltaic system 2 VARTA pulse neo 5 CHP wind power 3 Photovoltaic system 6 Consumer in building...

Page 31: ...power factor cos phi 0 90 1 0 Icw 10 kA IP code IP 34 protection class 1 Type M UF 273 00B EAN Nr 4260333931198 HW Code inverter topology non insulated operating temperatur range 5 C to 30 C date of m...

Page 32: ...General information 32 2 4 2 ID label of battery module 2 4 3 Unlock code label...

Page 33: ...x H x D 600 x 690 x 190 Weight incl battery module 45 kg 65 kg Installation location indoor Mains connection 240 V AC 50 Hz Switch on current max operating current Maximum residual current output max...

Page 34: ...al cell Li ion Nominal module capacity 3 3 kWh 6 5 kWh Discharge depth 90 90 Effective module capacity 3 0 kWh 5 9 kWh Connection insulated Cell monitoring integrated Dimensions in mm W x H x D 445 x...

Page 35: ...humidity 80 Max height 2000 m above sea level Overvoltage category III Protection class 1 Refer to chapter 8 3 Ambient conditions page 55 The energy storage system is fully enclosed by a building or...

Page 36: ...protocol with duration of commissioning Serial number SN number of the VARTA system Serial number of the battery module This information is stored by the installer in the installer portal of VARTA St...

Page 37: ...nergy storage systems B2B Login with password Provide all required information Please note The ID label nameplate of the system is attached in the system cabinet The ID label of the battery module is...

Page 38: ...with approval by the user Open www varta storage com Select Energy storage systems Login at the portal Provide all required information Alternatively the completed and signed guarantee documents commi...

Page 39: ...Any defects must be corrected immediately The energy storage system may only be opened by qualified electricians in deactivated condition Observe the waiting time ATTENTION Energy storage system deact...

Page 40: ...he conditions and events during operation of the energy storage system LED circle Colour LED action Operating state Green Blinking every second approx 90 seconds System check Green Flashing permanentl...

Page 41: ...system and use of the portal a download is available under www varta storage com see chapter 3 1 Guarantee registration Alternatively the respective option for use of the online portal of VARTA Storag...

Page 42: ...system includes Inspection and maintenance Repair technical improvements and extensions as applicable To preserve the right to make claims under guarantee outside of Germany Austria and Switzerland c...

Page 43: ...t use any water for cleaning the energy storage system Do not place any containers with liquids beverage cups or similar on electrical systems Cleaning agents Do not use any acidic alkaline or solvent...

Page 44: ...a qualified electrician Make sure that any work at the energy storage system is only performed by qualified electricians certified by VARTA Storage Indication of faults at the device The LED circle of...

Page 45: ...eactivate the system and interrupt the circuit breakers Leave the hazard area In case of fire call the fire services immediately Inform the fire services that the energy storage system is equipped wit...

Page 46: ...crid smell Avoid contact with any leaking fluids Avoid contact with any escaping vapours If possible Deactivate the system and interrupt the circuit breakers Avoid sparks and open fire Ventilate the i...

Page 47: ...vehicle All other requirements according to applicable regulations for transport of hazardous goods GGVSEB and ADR regulations must also be complied with The system is delivered in tested packaging fo...

Page 48: ...age system must not be transported if a battery module has already been installed The packaging of battery modules must not be opened by the driver or assistant driver Energy storage system and batter...

Page 49: ...nd compression Any work described in this chapter must be carried out by 2 persons or with suitable equipment Use personal protective equipment This reduces the risk of injury Transport checks DANGER...

Page 50: ...a note on the shipping documents and have it confirmed by the driver by signature Do not accept any deliveries in heavily damaged packaging Do not remove the packaging until immediately before instal...

Page 51: ...and battery module Store dry at a relative humidity of 80 Store at temperatures of 5 30 C optimum 18 C 7 4 3 Excessive storage ATTENTION Damage due to excessive storage Deep discharge of the battery m...

Page 52: ...cal systems Short circuit and corrosion due to condensation Do not start assembly before the components are at room temperature WARNING Installation of damaged components Potential risk of death Check...

Page 53: ...ion and confined spaces Risk of crushing of limbs Position the cabinet in such a way that safe installation operation servicing and disassembly are possible if it is used as intended At the installati...

Page 54: ...bserved Over the enclosure a minimum clearance height of 30 cm must be provided In front of the device a clearance of approx 120 cm in depth is required to perform installation and servicing at the fr...

Page 55: ...ough windows AC units ventilation or similar Ensure sufficient protection against rodents and do not smoke at the installation location 8 3 1 Temperature and relative humidity The clearance to the ven...

Page 56: ...ons with potentially explosive atmospheres with storage of flammable or oxidising substances wet areas subject to high fluctuations in ambient temperature subject to direct sunlight with a relative hu...

Page 57: ...0 410 Do not connect the energy storage system without PE and N conductor The system is intended for permanent connection Neutral and live conductors must not be mixed up as internal protective and me...

Page 58: ...xpose the sensor cable to mechanical loads To keep losses as low as possible the line between the storage system and the connection should have a maximum length of 20 m Preparation of AC connection to...

Page 59: ...onductor Fully insert the stripped conductor Connection of a fine wire conductor Press the clamp spring with a screwdriver 2 5 mm Fully insert the stripped conductor To release the line press the spri...

Page 60: ...ef fitting top VARTA Split Core current sensor If the energy storage system to be installed is to be cascaded as Master with other energy storage system proceed as follows If the energy storage system...

Page 61: ...etic cores Ensure a clean working environment To ensure optimisation of self consumption the building current sensor must record all values regarding the feed For this reason it is directly positioned...

Page 62: ...g of the VARTA Split Core current sensor consumption and feed the following must be observed The phase assignment L1 L2 L3 must have a clockwise phase sequence The arrows on the foldable transformers...

Page 63: ...ductor must be laid by opening the blue foldable transformer Open the lock at the rear place the foldable transformer around the conductor and close it The lock must click into place 1 Current sensor...

Page 64: ...Installation 64 Three Phase Single Phase Not permitted...

Page 65: ...ding current sensor must correspond to the phases of the PV current sensor The arrows on the foldable transformers must point to the sub distribution Preparation of installation Use suitable suspensio...

Page 66: ...nd insert the screw in such a way that a clearance of approx 3 mm remains between the wall and the screw head Remove the carrier lugs at the mounting plate Insert the mounting plate Check the vertical...

Page 67: ...Installation 67 All Dimensions in mm Fig 2 Dimensions at the mounting plate...

Page 68: ...te cores must be attached to the AC cable Afterwards establish the connection between the current sensor Fig 1 page 63 and the storage system see page 69 Plug the AC connector into the AC grid socket...

Page 69: ...Installation 69 AC side inverter 1 LAN network 2 PV sensor optional 3 Grid sensor building network 4 AC grid building connection 5 Protective earth PE 2x...

Page 70: ...e is deactivated and that no LED indicators are flashing The energy storage system must not be transported if a battery module has already been installed Keep unauthorised person away WARNING Contact...

Page 71: ...dule Check the battery module for damage and cleanliness Do not install damaged or dirty battery modules Do not take damaged or dirty battery modules into operation Carefully transport the battery mod...

Page 72: ...d contact with any escaping vapours Damaged or dirty battery module Please contact VARTA Storage First aid in case of contact with leaking fluids If inhaled Leave room Seek medical attention immediate...

Page 73: ...sons or with suitable equipment Do not lift the battery module at the handle When installing the battery module guide it with the handle ATTENTION Excessive storage of the battery module Deep discharg...

Page 74: ...module Before installation you must ensure that the mounting bracket is in the correct position If necessary mount the bracket with 4 screws at the specified position The torque of the screws is 5 Nm...

Page 75: ...tachment rails of the mounting plate The handle is only suitable for guiding the battery module The elongated holes at the battery module enable centring of the battery module at the preinstalled scre...

Page 76: ...lation 76 8 15 2 Connecting the battery module Establish the connections at the battery module Battery power connection Connect the two connectors with correct polarity The connectors must click into...

Page 77: ...into the openings of the clamping connector The connections are self locking Communication 2 Insert the communication cable red CAN Checking readiness Press the activation button at the battery modul...

Page 78: ...ctric shock Before closing the energy storage system make sure that all steps of installation are correct Do not use force to close the hood ATTENTION Damaged ON OFF switch The system cannot be taken...

Page 79: ...lean Are there loose parts in the interior Have all cables been connected correctly Has edge protection been installed at the dedicated positions As necessary rework all points If all points are compl...

Page 80: ...ical connection between hood and central earthing point by continuity testing Swivel the hood to the device Observe the position of the ON OFF switch Make sure that no lines are jammed The spring must...

Page 81: ...the storage system at the ON OFF button The bottom stays in the lower position Initialisation can be observed at the LED circle of the ON OFF button LED circle Colour LED action Operating state Green...

Page 82: ...e Colour Possible cause Solution ON OFF button is not pressed Press the ON OFF button Hood incorrectly installed Open hood and install according to instructions White Fuse not switched on Switch on th...

Page 83: ...ual and initialised After software updates the system interface may change Individual functions are menu items are described in the web interface Additional possible designations of buttons are displa...

Page 84: ...ed Depending on your system the automatic connection process may take up to five minutes After network configuration Update the view of the website Enter the following address in your browser line and...

Page 85: ...dresses can also be read out via the web interface of the router http vartaSERIALNUMBER Example http varta130100000 The login interface of the VARTA web interface is displayed Login at the web interfa...

Page 86: ...udes an individual access password for the user It consists of the first six digits of the Code 1 printed on the Nameplate It can be found on the enclosure of the energy storage system Please note At...

Page 87: ...ver during certification training It is added to the user password without any spaces The access data is as follows User name installer1 Password End user and installer Example End user Installer q82r...

Page 88: ...the login interface In the following window a PUK Personal Unlocking Key must be entered The PUK consists of the 36 digits of the Code 1 printed on the Nameplate It can be found on the enclosure of t...

Page 89: ...e selected Depending on your selection the energy storage system is set to the respective mode normal operation or cascade To continue with configuration Check the provided information and enable the...

Page 90: ...Country code drop down menu Check the values and adjust them as necessary to the requirements of the local grid operator Afterwards select Continue 10 9 5 Function test To start the automatic status c...

Page 91: ...essfully the installation in the installation wizard can be completed The start page of the web interface is displayed On this page further configurations can be made and current values can be display...

Page 92: ...ascade monitor is displayed It provides a full overview of the cascade Charging state of the cascade the current power the max capacity of the cascade If several storage systems are to be connected re...

Page 93: ...onnection of a PV inverter select Sunspec in the energy manager Please note The settings can only be made by the installer To ensure a permanent connection to the PV inverter we recommend assigning a...

Page 94: ...rgy storage system Observe the waiting time Make sure that the battery modules are deactivated and that no LED indicators are flashing Always observe all safety rules The energy storage system must no...

Page 95: ...roperly re established and secured All work at the VARTA pulse neo system must be documented by the qualified electrician in the service booklet WARNING Components are heavy They may pose a strain on...

Page 96: ...ervicing First servicing must be performed within two years after installation Afterwards the maintenance interval is 3 years Document any performed service and repairs in section Documentation Checki...

Page 97: ...ary an active fan may need to be installed Ask the user if any new heat sources have been installed at the installation location since the last maintenance Check the wall mounting for stability As nec...

Page 98: ...s currently under load the connection between current sensor and energy storage system may be disturbed As necessary load all phases separately Switch on targeted consumers As necessary check the curr...

Page 99: ...ice and repair Enclosure interior 11 4 1 Opening the energy storage system Make sure that the energy storage system is deactivated To open the energy storage system unscrew the screws at the bottom of...

Page 100: ...Servicing 100 AC side inverter 1 LAN network 2 PV sensor optional 3 Grid sensor building network 4 AC grid building connection 5 Protective earth PE 2x...

Page 101: ...let 2 Batt battery module 3 Fan 4 CAN 5 DRY 11 4 3 Removing the battery inverter Make sure that no small parts get into the battery inverter Disconnect the electrical connections Make sure that no LED...

Page 102: ...crews 1 3 Lift the battery inverter 4 to the top and out of the bracket 11 4 4 Installing the battery inverter For reinstallation perform the steps in reverse order The battery inverter clicks into pl...

Page 103: ...Personal injury and property damage Make sure that the battery module is not damaged during removal or installation Do not try to repair it Battery modules are maintenance free and must not be opened...

Page 104: ...ll it off to the top If the battery module is not automatically deactivated proceed as follows Deactivate the battery module with the activation button keep pressed until LED stops flashing Afterwards...

Page 105: ...rder See chapter 8 15 Installation and connection of the battery module page 73 11 4 7 Cleaning the fan and air filter The air filter must be replaced on every other servicing The fan can be accessed...

Page 106: ...ntact VARTA Storage Completion of servicing and repairs DANGER Contact with live components Risk of death Remove all tools and or small parts from the interior Correctly connect all cables Check all c...

Page 107: ...ust engage in the opening of the battery inverter Before closing the energy storage system check as follows Check Have all tools been removed Is the interior clean Are there loose parts in the interio...

Page 108: ...E conductor between the hood and battery inverter Check the electrical connection between hood and central earthing point by continuity testing Swivel the hood to the device Observe the position of th...

Page 109: ...ton Check the following sequence at the LED circle after activation LED circle Colour LED action Operating state Green Blinking every second approx 90 seconds System check Green Flashing permanently R...

Page 110: ...mber of the battery module commissioning of the storage system is not possible Cleaning WARNING Ingress of water in electrical systems Potential risk of death Do not use any water for cleaning the ene...

Page 111: ...bleshooting may only be performed by qualified electricians Indicated faults at the LED circle The LED circle at the ON OFF button indicates faults For further information refer to chapter 4 1 Indicat...

Page 112: ...shared Static address assignment For assignment of static IP addresses knowledge on the existing network is required For example the network configuration of the router must be read The address ranges...

Page 113: ...VARTA link energy storage system to internet ESP to external VARTA link energy storage system to internet 4998 TCP Internally VARTA link energy storage system to other energy storage systems and back...

Page 114: ...be disassembled by qualified electricians If the original packaging is no longer available please request suitable packaging for hazardous goods Disassembly process Opening of the system cabinet and...

Page 115: ...hazardous goods The costs for packaging and pick up are covered by VARTA Storage The cabinet can be disposed of as electronic waste at dedicated waste disposal sites Relocation Planning relocation WAR...

Page 116: ...ons The battery module should have a charging state of 20 to 30 percent of its capacity As necessary charge or discharge the battery modules Opening of the system cabinet and disassembly of components...

Page 117: ...ystem exclusively by qualified electricians certified by VARTA Storage GmbH is verified First servicing must be performed within two years after installation Afterwards the maintenance interval is 3 y...

Page 118: ...ature stamp Verification of servicing 1 Service within 2 years after installation Service contractor Name Street Postcode and city Phone number Service Date Certified service technician Signature stam...

Page 119: ...tus connected m Software version Ver Air filter counter reset m Error memory read out m Software update of offline system m Enclosure interior Grid at air filter cleaned m Air filter checked replaced...

Page 120: ...ocumentation 120 2 Service within 5 years after installation Service contractor Name Street Postcode and city Phone number Service Date Certified service technician Signature stamp Next service by Dat...

Page 121: ...tus connected m Software version Ver Air filter counter reset m Error memory read out m Software update of offline system m Enclosure interior Grid at air filter cleaned m Air filter checked replaced...

Page 122: ...ocumentation 122 3 Service within 8 years after installation Service contractor Name Street Postcode and city Phone number Service Date Certified service technician Signature stamp Next service by Dat...

Page 123: ...tus connected m Software version Ver Air filter counter reset m Error memory read out m Software update of offline system m Enclosure interior Grid at air filter cleaned m Air filter checked replaced...

Page 124: ...cumentation 124 4 Service within 11 years after installation Service contractor Name Street Postcode and city Phone number Service Date Certified service technician Signature stamp Next service by Dat...

Page 125: ...tus connected m Software version Ver Air filter counter reset m Error memory read out m Software update of offline system m Enclosure interior Grid at air filter cleaned m Air filter checked replaced...

Page 126: ...cumentation 126 5 Service within 14 years after installation Service contractor Name Street Postcode and city Phone number Service Date Certified service technician Signature stamp Next service by Dat...

Page 127: ...tus connected m Software version Ver Air filter counter reset m Error memory read out m Software update of offline system m Enclosure interior Grid at air filter cleaned m Air filter checked replaced...

Page 128: ...cumentation 128 6 Service within 17 years after installation Service contractor Name Street Postcode and city Phone number Service Date Certified service technician Signature stamp Next service by Dat...

Page 129: ...tus connected m Software version Ver Air filter counter reset m Error memory read out m Software update of offline system m Enclosure interior Grid at air filter cleaned m Air filter checked replaced...

Page 130: ...cumentation 130 7 Service within 20 years after installation Service contractor Name Street Postcode and city Phone number Service Date Certified service technician Signature stamp Next service by Dat...

Page 131: ...tus connected m Software version Ver Air filter counter reset m Error memory read out m Software update of offline system m Enclosure interior Grid at air filter cleaned m Air filter checked replaced...

Page 132: ...Documentation 132 Verification of repairs and other work Repairs other work 1 Service contractor Name Street Postcode and city Phone number Certified service technician Date Name Signature stamp...

Page 133: ...Documentation 133 Repairs other work 1 Date Software version Work performed Original parts Serial number old new Irregular system parameters Values Comments...

Page 134: ...Documentation 134 Repairs other work 2 Service contractor Name Street Postcode and city Phone number Certified service technician Date Name Signature stamp...

Page 135: ...Documentation 135 Repairs other work 2 Date Software version Work performed Original parts Serial number old new Irregular system parameters Values Comments...

Page 136: ...Documentation 136 Repairs other work 3 Service contractor Name Street Postcode and city Phone number Certified service technician Date Name Signature stamp...

Page 137: ...Documentation 137 Repairs other work 3 Date Software version Work performed Original parts Serial number old new Irregular system parameters Values Comments...

Page 138: ...Documentation 138 Repairs other work 4 Service contractor Name Street Postcode and city Phone number Certified service technician Date Name Signature stamp...

Page 139: ...Documentation 139 Repairs other work 4 Date Software version Work performed Original parts Serial number old new Irregular system parameters Values Comments...

Page 140: ...Documentation 140 Repairs other work 5 Service contractor Name Street Postcode and city Phone number Certified service technician Date Name Signature stamp...

Page 141: ...Documentation 141 Repairs other work 5 Date Software version Work performed Original parts Serial number old new Irregular system parameters Values Comments...

Page 142: ...Documentation 142 Repairs other work 6 Service contractor Name Street Postcode and city Phone number Certified service technician Date Name Signature stamp...

Page 143: ...Documentation 143 Repairs other work 6 Date Software version Work performed Original parts Serial number old new Irregular system parameters Values Comments...

Page 144: ...e directives and standards For the full declaration of conformity please refer to our website www varta storage com This operating manual is a document without binding character Subject to mistakes pr...

Page 145: ...Subject to modification Appendix Appendix 1 Connection diagram of TT system...

Page 146: ...Subject to modification Appendix 2 Connection diagram of TT system with data logger...

Page 147: ...Subject to modification Appendix 3 Connection diagram of TN C system...

Page 148: ...Subject to modification Appendix 4 Connection diagram of TN C system with data logger...

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