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Pos : 2 /Inverter Manuals /Ei ngangsteil/Ti tel blätter /Titel blatt R EFUs ol 48K-UL @ 3\mod_1480066630896_0.doc x @ 26170 @ @ 1
Installation and Operating Manual
REFUsol 48K-UL
English
REFU Elektronik GmbH
843 / 844 Series (with and without AFCI)
REFU Elektronik GmbH
No. 982018, Version 1.0
2017-03
Pos : 3 /Inverter Manuals /Ei ngangsteil/R ec htlic he Hinweise vor Inhalts verz eichnis/WR U L @ 2\mod_1469779804448_641.doc x @ 23434 @ 2222 @ 1
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Related Manuals for REFU REFUsol 48K-UL
Summary of Contents for REFU REFUsol 48K-UL
- Page 1 Pos : 2 /Inverter Manuals /Ei ngangsteil/Ti tel blätter /Titel blatt R EFUs ol 48K-UL @ 3\mod_1480066630896_0.doc x @ 26170 @ @ 1 Installation and Operating Manual REFUsol 48K-UL English REFU Elektronik GmbH 843 / 844 Series (with and without AFCI) REFU Elektronik GmbH No.
- Page 2 This manual and the information included therein are the property of REFU Elektronik GmbH. No part of this manual is to be reproduced or copied without the express written permission of REFU Elektronik GmbH. Any unauthorized use of this manual is strictly forbidden. Copyright © 2017 REFU Elektronik GmbH.
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Page 3: Table Of Contents
Product Compliance ..........................14 2.6.1 Safety and EMC Directives and Standards ..................14 Description of Device Operating Mode ............................15 Features of REFUsol 48K-UL ........................ 16 External Dimensions ..........................17 Block Diagram ............................17 System Block Diagram .......................... 18 Control Panel ............................18 Internal Data Logger.......................... - Page 4 7.2.1 To Operate the ADU in Normal Conditions ..................49 Responding To An Arc Fault ........................49 7.3.1 To Resolve an Arc Fault ........................50 Troubleshooting Self-Test Error Message ........................51 Transient Failure ........................... 51 REFUsol 48K-UL REFU Elektronik GmbH...
- Page 5 11.3 Disposal ..............................65 Technical data 12.1 Inverter ..............................66 12.2 Sensor..............................68 12.3 Efficiency Measurement REFUsol 48K-UL (843P048.000) ..............69 12.3.1 Efficiency Graph ..........................69 12.3.2 Efficiency Curves ........................... 69 12.4 Efficiency Measurement REFUsol 48K-UL (844P048.000) ..............70 12.4.1 Efficiency Graph ..........................
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Page 6: About These Operating Instructions
Keep the operating instructions readily available with the device for the entire service life of the product. Provide all future users of the device access to the operating instructions. Additional information on device options and troubleshooting is available at www.refu-sol.com. Symbols and Markup ... -
Page 7: Warning Notices
A notice describes information, which is important for the optimum and cost-effective operation of the equipment. Pos : 8 /Inverter Manuals /Sic her heits hinweise/Ei nleitung/Sic her hei tshi nweise @ 1\mod_1405344856819_641.doc x @ 7351 @ 1 @ 1 REFU Elektronik GmbH REFUsol 48K-UL... -
Page 8: Safety Information
Pos : 9 /Inverter Manuals /Sic her heits hinweise/Besti mmungsgemäß e Ver wendung/866/867 @ 1\mod_1404740847808_641.doc x @ 6749 @ 2 @ 1 Intended Use The REFUsol 48K-UL inverter, also referred to in these operating instructions as the inverter, is a solar inverter, which transforms the direct current generated by the PV generator (photovoltaic modules) into alternating current and feeds this to the public power supply network. -
Page 9: Medical And First Aid Treatment
DANGER Risk of electrical shock Before connecting the inverter to the electrical utility grid, your utility company must grant approval. Only qualified electricians should make the connection to the utility grid. REFU Elektronik GmbH REFUsol 48K-UL... -
Page 10: Wiring Requirements
This equipment is intended to be installed as part of a permanently grounded electrical system per the NEC or local standards. Wiring Connections The inverter is connected to the utility grid at the AC terminals. The inverter is configured for 480 VAC, three- phase output with separate neutral. REFUsol 48K-UL REFU Elektronik GmbH... -
Page 11: Grounding Requirements
Use caution when working around the heat sink area. Pos : 17 /Inverter M anuals/Sicher heitshi nweis e/Loc kout and T agout R equirements/WR UL @ 2\mod_1469792427195_641.doc x @ 23600 @ @ 1 REFU Elektronik GmbH REFUsol 48K-UL... -
Page 12: Lockout And Tagout Requirements
Internet protocol Islanding occurs when the inverter continues to feed power to a de-energized Islanding AC main circuit. LOTO Lockout Tagout 1000 circular mils utilized in wire sizing MPPT Maximum power point tracking Network time protocol REFUsol 48K-UL REFU Elektronik GmbH... -
Page 13: Interpreting Product Labels
Pos : 19 /Inverter M anuals/Sicher heitshi nweis e/Warnhinweis e i m oder am Gerät/WR U L @ 2\mod_1469784791580_641.doc x @ 23506 @ 2 @ 1 Interpreting Product Labels The following labels may appear on your unit: General warning sign Hazardous voltage REFU Elektronik GmbH REFUsol 48K-UL... -
Page 14: Product Compliance
Distributed Resources with Electric Power Systems was used for the test method; IEEE 1547 paragraph 4.4 was used for timing requirements. Pos : 21 /Inverter M anuals/Ger ätebesc hrei bung/Ü bers chrift/Gerätebeschr eibung @ 1\mod_1410956962695_641.doc x @ 7842 @ 1 @ 1 REFUsol 48K-UL REFU Elektronik GmbH... -
Page 15: Description Of Device
Pos : 22 /Inverter M anuals/Ger ätebesc hrei bung/F unktions prinzi p/WR U L @ 3\mod_1486632569265_641.doc x @ 27734 @ 2 @ 1 Operating Mode The REFUsol 48K-UL transforms the direct current generated by photovoltaic (PV) modules into alternating current and feeds this into the public grid. -
Page 16: Features Of Refusol 48K-Ul
Pos : 23 /Inverter M anuals/Ger ätebesc hrei bung/M er kmal e/840 842 843 844 @ 1 \mod_1411395847660_641.doc x @ 7977 @ 2 @ 1 Features of REFUsol 48K-UL The REFUsol 48K-UL inverter is a transformer-less, three-phase solar inverter, which has a particularly high efficiency at any operating point. -
Page 17: External Dimensions
When installing a DC Combiner Box mind that additional space is needed! Pos : 26 /Inverter M anuals/Ger ätebesc hrei bung/ Bloc kschaltbilder/842 843 844 @ 3\mod_1478694559337_641.doc x @ 25318 @ 2 @ 1 Block Diagram Fig. 3: Block diagram REFU Elektronik GmbH REFUsol 48K-UL... -
Page 18: System Block Diagram
The parameters required are selected and entered on the 8-key control panel. The control panel is illuminated when a key is pressed and turns dark automatically. REFUsol 48K-UL REFU Elektronik GmbH... -
Page 19: Internal Data Logger
Storage time 1 minute 2.5 years 2 minutes 5 years 5 minutes 12.5 years 10 minutes 25 years Pos : 30 /Inverter M anuals/Ins tall ation/Ü berschrift/Installation @ 1\mod_1406617845321_641.doc x @ 7502 @ 1 @ 1 REFU Elektronik GmbH REFUsol 48K-UL... -
Page 20: Installation
Installation in non-ventilated ended cabinets and enclosures is not allowed because the unit in operation emits heat. To allow for the heat dissipation required, keep the following minimum distances from the ceiling and wall as well as from neighbouring devices: REFUsol 48K-UL REFU Elektronik GmbH... -
Page 21: Transport
The devices must be stored in clean and dry premises, if possible in their original packaging. The storage temperature must be in the range of -40 +60 °C (-40 140 °F). Permissible variations in temperature may not exceed 20 °C (68 °F) per hour. REFU Elektronik GmbH REFUsol 48K-UL... -
Page 22: Check Delivery
104 °F while in a de- energized state. If the storage time has been exceeded, please contact contact REFU Elektronik GmbH Service before connecting the inverter to your system! Pos : 34 /Inverter M anuals/Ins tall ation/Li eferumfang über prüfen/843 844 @ 3\mod_1480065919317_641.doc x @ 26158 @ 2 @ 1... - Page 23 Fix the lifting eye plates into the slot (see red arrows): Carefully lift the inverter out of the box with a crane or with 2 persons. Keep the product weight of 75.6 kg (166 lbs) in mind! REFU Elektronik GmbH REFUsol 48K-UL...
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Page 24: Installation
Do not open device. Opening the device voids the warranty. NOTICE Danger of damage to property Do not use the cover to hold the device. Only use the four holding grips to move the device. REFUsol 48K-UL REFU Elektronik GmbH... - Page 25 1. Use the wall bracket to mark the positions of the holes to be drilled. 2. Attach the wall-mounting plate to the wall using maximal 5 screws. The screws for attachment to the wall are not included. Screws with a diameter of 10 mm (3/8 ) must be used. REFU Elektronik GmbH REFUsol 48K-UL...
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Page 26: Device Connectors
Fig. 10: Device connectors The inverter is provided with the following connectors, as seen from left to right, top to bottom: Ethernet interface Sensor (irradiation, temperature or remote shutdown signal) RS485 connections (IN and OUT) REFUsol 48K-UL REFU Elektronik GmbH... -
Page 27: Grounding
An operational isolation error occurs when the device detects a residual current in the circuit, and is indicated on the display of the inverter. In the event of an isolation error, please check the system isolation. If the isolation impedance is in the normal range, please contact REFU Elektronik GmbH Service at service.usa@prettl-energy. -
Page 28: Dc And Ac Wiring Feedthrough
AC cable inductance can lead to increasing line impedances. This can lead to voltage distortions and error messages with regards to: Grid overvoltage (long cable) Increased operating noise of the inverters (short cable) REFUsol 48K-UL REFU Elektronik GmbH... -
Page 29: Dc Connection Of The Solar Generator
The inverter has a single DC input for connecting the solar generator. The module strings must be combined in a separate DC string combiner box. The DC terminals can be used with aluminum and copper wires. Please also check the installation instruction of Phoenix Contact. REFU Elektronik GmbH REFUsol 48K-UL... - Page 30 The solar inverter is protected against reverse polarity connection by an integrated diode. The PV generator may not exceed the following operational characteristics under any circumstances! Device type REFUsol 48K-UL Max. DC voltage at each input 1000 V Max. short-circuit current DC input 160 A Max.
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Page 31: Dc And Ac Terminal Connections
Drill a hole into the cabinet housing for the appropriate conduit diameter: Fix the connection housing conduit onto the housing. Put the seal element on top of the connection housing. Lift the connection housing onto the inverter housing, fitting it onto the 4 pem studs: REFU Elektronik GmbH REFUsol 48K-UL... - Page 32 Unscrew the front cover of the connection housing to remove: Put the cable through the conduit into the connection housing: Strip the insulation from the conductor. AWG 3 AWG 2 Route the conductor into the terminal point, leaving a service loop. REFUsol 48K-UL REFU Elektronik GmbH...
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Page 33: Interface Port Rs485
1 to pin 2 as well as pin 3 to pin 4. Signal Pin 1 (only used for termination) Pin 2 RS485 + Pin 3 RS485 - Pin 4 Reference REFU Elektronik GmbH REFUsol 48K-UL... -
Page 34: Ethernet Interface Connection
Failure to observe this can lead to damage to the inverter and therefore void the warranty. The plug pair can be ordered at REFU Elektronik GmbH with Art. No. 922001. Pos : 45 /Inverter M anuals/Ins tall ation/Sc hni ttstellenans chl uss Ethernet/WR @ 1\mod_1404806484083_641.doc x @ 6899 @ 2 @ 1 4.15... -
Page 35: Commissioning
If at the DC input of the inverter sufficient voltage is present, the inverter starts operation. Note: The control panel, including its status indicators, display, and operator keys, is only active when the PV generator is supplying sufficiently voltage. REFU Elektronik GmbH REFUsol 48K-UL... -
Page 36: Switching On The Device After Replacement
PV generator is supplying sufficiently high voltage. Pos : 48 /Inverter M anuals/Betrieb/Inbetriebnahme/Ger ät ei nschalten/Wieder einschalten/Spannungsfr ei sc hal ten/843 844 @ 3\mod_1487675254142_641.doc x @ 27929 @ 22 @ 4 REFUsol 48K-UL REFU Elektronik GmbH... -
Page 37: Disconnecting Device Power
After the initial setting and confirmation of the country code the country code can only be altered within 40 hours. This is also valid for replacement devices. The country code can then only be changed by authorized service personnel. REFU Elektronik GmbH REFUsol 48K-UL... -
Page 38: Set Country Code/Grid Guideline
4. Press OK to confirm. 5.4.2 Accepting the Country Code To be certain, you will be asked whether you wish to accept the country code. After accepting the country code it can only be changed within 40 hours. REFUsol 48K-UL REFU Elektronik GmbH... -
Page 39: Device Start
All status LEDs are lit for approx. 6 seconds Check Activation Feed in lights green/normally all other status LEDs are off. Pos : 51 /Inverter M anuals/Betrieb/Inbetriebnahme/Bedi enfel d/WR @ 1\mod_1405071297309_641.doc x @ 7068 @ 2 @ 1 REFU Elektronik GmbH REFUsol 48K-UL... -
Page 40: Control Panel
Confirm the selected menu (next menu level) and entered data. Pos : 53 /Inverter M anuals/Betrieb/Inbetriebnahme/Grafi kanz eige/WR @ 1\mod_1405071640916_641.doc x @ 7079 @ 2 @ 1 Graphical Display Press the arrow key once to display the development of the day's feed power. REFUsol 48K-UL REFU Elektronik GmbH... -
Page 41: Energy Yield Data Display
Fig. 20: Energy yield normalized on the display Press the ESC key to return to the basic screen display. Pos : 56 /Inverter M anuals/Betrieb/Inbetriebnahme/Eing abe N or mierung/WR @ 1\mod_1405072437225_641.doc x @ 7100 @ 3 @ 1 REFU Elektronik GmbH REFUsol 48K-UL... -
Page 42: Input Of Standardized Data
Fig. 21: Standardized data input display Press the OK key to apply the set value. Press the ESC key to discard the value and display the previous normalized yield level. Press the F1 key to display the menu. REFUsol 48K-UL REFU Elektronik GmbH... -
Page 43: Menu Structure
Activation Portal settings Sending config Extended Portal Test Overview Version number Country Current language Ethernet Pos : 58 /Inverter M anuals/Konfig urati on/Übersc hrift/Konfig urati on @ 1\mod_1410960267897_641.doc x @ 7898 @ 1 @ 1 REFU Elektronik GmbH REFUsol 48K-UL... -
Page 44: Configuration
Enter the invert power output as percentage of the nominal power and confirm with the OK key. The power limit is immediately applied. Pos : 61 /Inverter M anuals/F ernüber wac hung/Data Communi cati ons Over vi ew/WR @ 2\mod_1474037244081_641.doc x @ 24974 @ 2 @ 1 REFUsol 48K-UL REFU Elektronik GmbH... -
Page 45: Monitoring With Refulog
You can use the activation code provided on the type label of the inverter to assign one or more inverter to a PV system. Pos : 62 /Inverter M anuals/Konfig urati on/REFU set/WR @ 1\mod_1405076152162_641.doc x @ 7125 @ 2 @ 1 REFUset... -
Page 46: Communication Via Ethernet
K factor (fault ride through) REFUset can be downloaded from www.refu-sol.com. Pos : 63 /Inverter M anuals/Konfig urati on/Kommuni kati on über Ethernet/Einl eitung/WR @ 1\mod_1405076335905_641.doc x @ 7132 @ 2 @ 1 Communication via Ethernet The settings for the Ethernet communication can take place either manually or automatically (via DHCP). -
Page 47: Communication Via Rs485
This address is required for communicating with the inverter via RS485. After entering the address, restart the inverter to activate the new address. Protocol type: 1: REFU USS protocol (preset) 2: (not used) 3: Meteocontrol USS 4: Modbus RTU Sunspec... -
Page 48: Portal Monitoring
On request of our service, you can send a test data package to the portal. Open the Pos : 70 /Inverter M anuals/Betrieb/Standar dbetri eb/Arc Fault D etecti on/Übersc hrift/Oper ating the Arc F aul t D etection U nit @ 2\mod_1475849172187_641.doc x @ 25024 @ @ 1 REFUsol 48K-UL REFU Elektronik GmbH... -
Page 49: Operating The Arc Fault Detection Unit (Adu)
A buzzer sounds for 30 seconds. The arc fault error message is displayed. An event is sent to REFUlog, if the inverter is using REFUlog. After the first 30 seconds, the buzzer will sound once per minute. REFU Elektronik GmbH REFUsol 48K-UL... -
Page 50: To Resolve An Arc Fault
Turn the inverter off, and then on using the DC disconnect switch. If the fault situation continues to occur, contact REFU Technical Support for additional information. Pos : 74 /Inverter M anuals/F ehler behe bung/Ü berschrift/F ehl erbehebung @ 1\mod_1406624007602_641.doc x @ 7643 @ 1 @ 1... -
Page 51: Troubleshooting
Pos : 79 /Inverter M anuals/F ehler behebung/Liste der Stör mel dungen/WR @ 2\mod_1424866513594_641.doc x @ 14303 @ 2 @ 1 List of Error Messages Note Under certain weather conditions, condensation may form in the display. This is normal and causes no malfunction of the inverter. REFU Elektronik GmbH REFUsol 48K-UL... - Page 52 RCD fault The AFI-Board unit has detected a Check system isolation. As long as residual current. you consider the isolation 9001D RCD warning Leads to an immediately shutdown impedance to be in order, contact Service. REFUsol 48K-UL REFU Elektronik GmbH...
- Page 53 The inverter can't connect to the grid, Deactivate user lock as the User-lock has been set. 90053 Communication Internal communication problems Fault is independently resolved after a few minutes. If not, switch device off and on again. If this does REFU Elektronik GmbH REFUsol 48K-UL...
- Page 54 Reset the arc fault detector. Press detected disconnection ESC on the Disblay. A0022 Ext. OVGR External stop signal OVGR is During the inverter detects OVGR: Signal detected. Verify External stop signal OVGR. Possible causes wire breakage. REFUsol 48K-UL REFU Elektronik GmbH...
- Page 55 DC link voltage drop during activation automatically. If problem occurs repeatedly, contact Service. A011C Activation LT 3 Target value for balancing is invalid. A011D Activation LT 4 Balancing has failed. Please contact Service A011E Activation LT 5 Voltage booster mailfunction REFU Elektronik GmbH REFUsol 48K-UL...
- Page 56 N15V supply voltage at the power Supply stack is too low. A017D Phase defect an error has been detected in the power modules Pos : 80 /Inverter M anuals/Optionen/Ü berschrift/Opti onen @ 1\mod_1410945097834_641.doc x @ 7812 @ 1 @ 1 REFUsol 48K-UL REFU Elektronik GmbH...
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Page 57: Options
For recording the irradiation and the module temperature, an irradiation and temperature sensor can be connected to the sensor interface of the inverter. The recommended type is Si-13TC-T-K and can be ordered at REFU Elektronik GmbH with art. no. 922009. The sensor plug can separately be ordered with art. no. 922010. -
Page 58: Assembling Of The Sensor Plug
9.1.3 Assembling of the Sensor Plug 9.1.4 Connection of the Sensor at the Solar Inverter Fig. 23: Standard connection at a solar inverter (not applicable at AFCI variant) REFUsol 48K-UL REFU Elektronik GmbH... -
Page 59: Configuration
The actual values of the sensor can be viewed in Actual values > Sensor. The data continues to be recorded with the data logger and can be viewed via REFUlog. Pos : 82 /Inverter M anuals/Optionen/Exter nes Absc hal tsignal/WR @ 1 \mod_1405077848971_641.doc x @ 7219 @ 23333 @ 1 REFU Elektronik GmbH REFUsol 48K-UL... -
Page 60: External Turn Off Signal
Nominal voltage 10 VDC Voltage (operation) Voltage (Stop) Standard switch-off time inverter 50 ms Switch-off time range REFUsol 48K-UL REFU Elektronik GmbH... -
Page 61: Configurations
9.2.3 Configurations Fig. 25: Single external stop signal Fig. 26: Redundant external stop signal (does not apply to AFCI variant) Fig. 27: Single external stop signal with sensor connected (does not apply to AFCI variant) REFU Elektronik GmbH REFUsol 48K-UL... -
Page 62: Configuration
Risk of electric shock and fire caused by high discharge current. Before connecting the device to the supply circuit, establish a ground connection. Pos : 83 /Inverter M anuals/Wartung/Ü bersc hrift/Wartung @ 1\mod_1413202277361_641.doc x @ 9138 @ 1 @ 1 REFUsol 48K-UL REFU Elektronik GmbH... -
Page 63: Maintenance
Cleaning with high-pressure cleaners is prohibited. Annually, the DC switch has to be operated without electricity 5 times. Pos : 85 /Inverter M anuals/Betrieb/Auß erbetri ebnahme/Einl eitung/843 844 @ 3\mod_1487666373378_641.doc x @ 27914 @ 1 @ 4 REFU Elektronik GmbH REFUsol 48K-UL... -
Page 64: Decommissioning
Do not open device. Opening the device voids the warranty. NOTICE Danger of damage to property Do not use the cover to hold the device. Only use the four holding grips to move the device. Fig. 28: Handles on the inverter REFUsol 48K-UL REFU Elektronik GmbH... -
Page 65: Remove Inverter
The inverter conforms to RoHS. That means that the device can be taken to municipal disposal sites for household appliances. REFU Elektronik GmbH takes the inverter back completely. Please contact the Service team at service.usa@prettl-energy. Pos : 89 /Inverter M anuals/T ec hnis che D aten/Übersc hrift/T ec hnische D aten @ 1\mod_1411032715363_641.doc x @ 7912 @ 1 @ 1... -
Page 66: Technical Data
Technical data Pos : 90 /Inverter M anuals/T ec hnis che D aten/Wec hs elrichter/843 844 @ 3\mod_1480062148750_641.doc x @ 26134 @ 2 @ 1 12.1 Inverter REFUsol 48K-UL 843P048.000 (no AFCI) Art. No. 844P048.000 (with AFCI) DC DATA Max. recommended PV power (kWp) MPPT range at nominal power (V) Max. - Page 67 The derating of the maximum open circuit voltage depends on the installation altitude: Altitude above sea level Max. DC voltage up to 2600 m (8,530 ft) 1000 V up to 3000 m (9,843 ft) 950 V REFU Elektronik GmbH REFUsol 48K-UL...
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Page 68: Sensor
Temperature and radiation sensor or PowerCap Pos : 92 /Inverter M anuals/T ec hnis che D aten/Mess kur ven Effici enc y/843 Effici enc y M easur ement @ 3\mod_1487680988314_641.doc x @ 28014 @ @ 1 REFUsol 48K-UL REFU Elektronik GmbH... -
Page 69: Efficiency Measurement Refusol 48K-Ul (843P048.000)
12.3 Efficiency Measurement REFUsol 48K-UL (843P048.000) 12.3.1 Efficiency Graph 12.3.2 Efficiency Curves Pos : 93 /Inverter M anuals/T ec hnis che D aten/Mess kur ven Effici enc y/844 Effici enc y M easur ement @ 3\mod_1487685884793_641.doc x @ 28024 @ @ 1... -
Page 70: Efficiency Measurement Refusol 48K-Ul (844P048.000)
12.4 Efficiency Measurement REFUsol 48K-UL (844P048.000) 12.4.1 Efficiency Graph 12.4.2 Efficiency Curves Pos : 94 /Inverter M anuals/T ec hnis che D aten/Mess kur ven T emperatur e D erati ng/843 844 T emper ature D erating @ 3\mod_1487686031076_641.doc x @ 28034 @ @ 1... -
Page 71: Temperature Derating Curve
12.5 Temperature Derating Curve Fig. 29: Temperature derating REFUsol 48K-UL (843P048, 844P048) === Ende der Liste für T extmar ke Inhalt2 === REFU Elektronik GmbH REFUsol 48K-UL... -
Page 72: Contact
Direct Link: www.refu-sol.com/en/accessories/technischer-support/ You should have the following data at hand: Exact description of the error with error code. Data from the type label, particularly the device type on the top left of the type label. REFUsol 48K-UL REFU Elektronik GmbH...
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