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USER’S AND INSTALLATION MANUAL / GEBRUIKERS- EN INSTALLATIEHANDLEIDING BEDIENUNGS- UND INSTALLATIONSANLEITUNG / MANUEL UTILISATEURS ET D’INSTALLATION MANUAL DEL USUARIO Y DE INSTALACIÓN / MANUALE DI USO E MANUTENZIONE StringMaster CS 2-6 SW 2 x 6 string box for the CS TL inverter MASTERVOLT Snijdersbergweg 93, 1105 AN Amsterdam The Netherlands Tel.: +31-20-3422100 Fax.: +31-20-6971006 www.mastervolt.com ENGLISH: NEDERLANDS: DEUTSCH: FRANÇAIS: CASTELLANO: ITALIANO: PAGE 1 PAGINA 9 SEITE 17 PAGINA 29 PÁGINA 41 PÁGINA 53 Copyright © 2010 Mastervolt, v 1.2 October 2010 OVERVIEW OVERVIEW STRINGMASTER CS 2-6 SW 1 4 5 2 6 3 7 8 9 Figure 1: Inside view of the CS 2-6 SW 1. String input 1 Positive 2. Input 1 to inverter: +, PE, 3. String input 1 Negative A 4. SPD Input 2 5. DC Switch 6. SPD Input 1 7. String input 2 Positive 8. Input 2 to inverter: +, 9. String input 2 Negative B 12x A. User’s manual B. 12 Dummy fuses Figure 2: Standard delivery with CS 2-6 SW 2 October 2010 / StringMaster CS 2-6 SW / EN CONTENTS CONTENTS: v 1.2 October 2010 1 GENERAL INFORMATION.............................................................................................................................................. 3 2 SAFETY GUIDELINES AND WARNINGS....................................................................................................................... 4 3 HOW IT WORKS.............................................................................................................................................................. 4 4 BEFORE YOU START..................................................................................................................................................... 5 5 INSTALLATION AND COMMISSIONING........................................................................................................................ 5 5.1 Things you need for installation.......................................................................................................................... 5 5.2 Installation step by step ...................................................................................................................................... 6 5.3 Connection of strings.......................................................................................................................................... 6 5.4 Commissioning after installation......................................................................................................................... 7 5.5 De-commissioning.............................................................................................................................................. 7 6 OPERATION .................................................................................................................................................................... 7 7 CE DECLARATION OF CONFORMITY .......................................................................................................................... 7 8 TECHNICAL DATA.......................................................................................................................................................... 8 1 GENERAL INFORMATION 1.1 PRODUCT DESCRIPTION The Mastervolt StringMaster CS2-6 SW, further referred to as “StringMaster” is an IP65 connection box for up to twelve PV strings. It combines the strings to two strings for connection with the CS TL solar inverters.It features:PV fuses;SPD’s (Over voltage protection); DC switch. 1.2 USE OF THIS MANUAL Copyright © 2010 Mastervolt. All rights reserved. Reproduction, transfer, distribution or storage of part or all of the contents in this document in any form without the prior written permission of Mastervolt is prohibited. This manual serves as a guideline for the safe and effective installation of the StringMaster: • For the electrician this manual provides directions for the installation, operation and commissioning. • For the end-user this manual gives directions for the operation, maintenance and possible correction of minor malfunctions of the StringMaster. • Every person who works with the apparatus should be familiar with the contents of this manual, and must carefully follow the instructions contained herein. • Store the manual in a user accessible place. 1.3 VALIDITY OF THIS MANUAL All the specifications, provisions and instructions contained in this manual apply solely to the Mastervolt-delivered standard version of the StringMaster. 1.4 GUARANTEE SPECIFICATIONS Mastervolt assures the product guarantee of the StringMaster during five years after your purchase, on the condition that all instructions and warnings given in this manual are taken into account during installation and operation. Among other things, this means that installation is carried out by a qualified electrician, that installation and maintenance are executed according to the stated instructions and correct working sequence and that no EN / StringMaster CS 2-6 SW / October 2010 changes or repairs may have been performed on the StringMaster other than by Mastervolt. The warranty is limited to the costs of repair and/or replacement of the product by Mastervolt only. Costs for installation labour or shipping of the defective parts are not covered by this warranty. For making an appeal on warranty you can contact your supplier directly, stating your complaint, application, date of purchase and part number / serial number. 1.5 LIABILITY Mastervolt accepts no liability for: • consequential damage due to use of the StringMaster; • possible errors in the manuals and the results thereof. 1.6 CHANGES TO THE STRINGMASTER Changes on the StringMaster may be carried out only after the written permission of Mastervolt. The identification label (see figure 3) is positioned at the right side under the StringMaster. CAUTION! Never remove the identification label. 1.7 IDENTIFICATION LABEL 131300300 Figure 3 3 SAFETY GUIDELINES AND WARNINGS 2 SAFETY GUIDELINES AND WARNINGS 2.1 WARNINGS AND SYMBOLS Safety instructions and warnings are marked in this manual by the following pictograms: A procedure, circumstance, deserves extra attention. etc • 2.4 which CAUTION! Special information, commands prohibitions in order to prevent damage. be familiar with the contents of this manual. This applies particularly to Chapter 2, Safety Guidelines & Warning. INSTALLATION, MAINTENANCE AND REPAIR WARNING As high voltages exist, only allow installation, maintenance and repair of the StringMaster and changes in your electrical system to be carried out by qualified electricians. Connections and safety features must be executed according to the locally applicable regulations. If such are required, only use original spare parts. and WARNING A WARNING refers to possible injury to the user or installer or significant material damage to the StringMaster if the installer / user does not (carefully) follow the stated procedures. 2.5 WARNING On the lid, this warning has been printed: Attention! The system may still be energized after it was switched off. Opening only by a certified electrician. 2.2 USE FOR INTENDED PURPOSE The StringMaster is constructed according the applicable safety-technical guidelines. Use the StringMaster only in installations that meet the following qualifications: • in permanent installations; • the electrical installation must meet the applicable regulations and standards, must be carried out correctly and must be in a good condition; • according to the technical specifications as stated in section 8.1. 2.6 WARNING Never use the StringMaster in situations where there is danger of gas or dust explosion or potentially flammable products! Use of the StringMaster other than as mentioned under § 2.2 is not considered to be consistent with the intended purpose. Mastervolt is not liable for any damage resulting from the above. WARNING OF SPECIAL DANGERS DC voltages up to 1000V may exist in the StringMaster, also with the DC switch in the Off position. The voltages present at both sides of the StringMaster are not safe to touch and cannot be switched off at the PV panel side. Do not work on the StringMaster and/or the electrical installation if it is still connected to the PV panels or the inverter. Allow time for the inverter capacitors to de-energize. Verify de-energizing of all connections using a suitable metering instrument. Make sure two persons are present when working on an installation, at least until the installation has been de-energized and verified by a suitable metering instrument. 2.3 ORGANISATIONAL MEASURES The installer / user must always: • have access to this manual; 3 HOW IT WORKS WORKING PRINCIPLE inverter. The electrical components in the StringMaster are housed in an IP65 compartment. Fuses (2 per string) Parallel Overvoltage protection DC Switch Fuses (2 per string) Parallel Overvoltage protection DC Switch Input from 2x6 PV strings See figure 4. The StringMaster combines the strings of PV panels to two solar inputs for a CS15TL/CS20TL solar Output to inverter 3.1 CS 20 TL Figure 4: StringMaster working principle 4 October 2010 / StringMaster CS 2-6 SW / EN BEFORE YOU START 4 BEFORE YOU START 4.1 TRANSPORT, LIFTING AND STORAGE • Ensure adequate and secure packaging during transportation of the StringMaster. Always use suitable handling equipment for transportation. • 4.2 • INSTALLATION ENVIRONMENT Obey the following stipulations during installation: • The StringMaster is designed for both indoor and outdoor use, according to safety class IP65; • The StringMaster must be mounted close to the inverter because of the DC switch; • Ambient temperature: -20 to 40°C; • Mount the StringMaster to a solid wall, with the glands facing sidewards. 4.3 • • Do not install the StringMaster if the solar system does not comply with the stipulations mentioned above. DC CONFIGURATION The solar or DC side of the system consists of several photovoltaic (solar) modules, further referred to as “PV modules”. The PV modules are connected in series to form a so called “string”. These strings consist of a plus (+) and a minus (–) connection which can be connected directly to the CS20TL or indirectly via the StringMaster. The cabling between the StringMaster and the inverter must be double insulated and suitable for 1000 V DC. The calculated string voltage equals the open circuit voltage (Uoc) per PV module (refer to the specifications of the PV module), multiplied by the number of PV modules in each string. Depending on the solar irradiation and temperature, the measured string voltage amounts to 7095% of the calculated value. 4.4 Lightning hazard Risk of direct lightning strike (LPZ0) Risk of indirect lightning strike (LPZ1) Low risk of surge damage (LPZ2) LIGHTNING PROTECTION In a solar installation, precautions must be taken to avoid damage from induced surges caused by lightning. A Surge Protection Device (SPD) helps to attenuate the impulse voltage to the value specified. See the table below for an overview of the SPD’s to install. Also refer to the standard EN 62305, defining Lightning Protection Zones (LPZ). The risk of induced surges exists on all cables longer than 10m: PV, AC and communication cables! The risk of system damage caused by overvoltages is attenuated by bundling +, -, PE and shielding the cables. 4.3.1 PV installation requirements The PV installation has to meet next specifications: Installation Outside, on a roof Cable length > 10 m Cable length < 10 m The maximum open circuit string voltage for each power module at lowest possible temperature of the string may not exceed 1000V; Double isolated PV wiring, fitted with MultiContact connectors (at the inverter side) must be used; The maximum power connected to the stringbox may not exceed 1000Vdc/ 30Adc at the output; All connection devices (wiring, terminal blocks, fuse holders, fuses, switches, etcetera) must be rated for the applicable voltage (up to 1000V DC) and current ratings (up to 30A DC) of the solar installation. SPD’s required, see next section. SPD type I or combination I + II (if cable length > 10 m) II (two type II SPD’s are integrated in the StringMaster) III (integrated in the CS20TL inverter) 5 INSTALLATION AND COMMISSIONING CAUTION CAUTION! Until all wiring has been verified to be deenergized for safety reasons, at least 2 persons are required during installation. Verify that all wiring is disconnected from any energy source during the entire installation. Use suitable testing equipment. Before insulation test, remove plug in units from over voltage protection to prevent damage. CAUTION! Read chapters 2 and 4 prior to installation. CAUTION! Short circuiting, miswiring or reverse polarity may lead to damage to the StringMaster, the cabling and/or the terminal connections. Follow all steps of the installation instructions in order of succession as described. EN / StringMaster CS 2-6 SW / October 2010 5.1 THINGS YOU NEED FOR INSTALLATION Make sure you have all the parts you need to install the StringMaster: • StringMaster CS 2-6 SW (included). • This user’s manual (included). • 4 screws to fix the enclosure to the wall. • Tools to fix the StringMaster enclosure to the wall • Tools to install the wiring. 5 INSTALLATION AND COMMISSIONING 5.2 1 High voltages (up to 1000 VDC) may exist on the PV strings! Connection of the DC cabling may only be carried out if the DC cables are potential free. During installation the PV modules must be disconnected from the DC cabling (for instance by disconnecting the MultiContact connectors at the PV modules). Protect the StringMaster against direct sunlight and rain by mounting it under a roof, not on top of the roof. INSTALLATION STEP BY STEP Fix the four mounting pieces supplied to the StringMaster, using the M6 screws. Fix the StringMaster to the wall. See figure 7. Use suitable screws and plugs. Put the switch in position “0” like figure 5 and open the lid of the StringMaster. Connect the Protective Earth cable (PE). Connect wiring to the inverter. Connect the wiring from the PV strings. Place the fuses. Close the lid securely to prevent moist leaking inside. 2 3 4 5 6 7 8 See figure 5. Mount the StringMaster to a flat surface, preventing it from bending when being fixed in place. The box sealing only works correctly when the box is not bent. WARNINGS To avoid damage to the StringMaster in case of miswiring, connect all minus wires first. 580 22.8 7.5 0.30 10 0.39 1 1.06 15.0 A 380 27 0 A 0 1 Figure 5: Drilling dimensions, Installation environment, Button position to close the lid 5.3 CONNECTION OF STRINGS The StringMaster CS 2-6 SW accommodates maximum six strings per inverter solar input. This means it can accommodate maximum 12 strings. String inputs String fuses The StringMaster string box contains fuse holders at both the positive and negative DC input lines. In total, 24 fuses can be placed. Fuses in the positive input lines are compulsory. The StringMaster CS 2-6 SW is standard equipped with dummy fuses in the negative input lines. SPD (overvoltage protection) DC Switch Output to inverter Figure 6: Functional scheme Stringmaster Sw 5.3.1 Fuse rating selection For Mastervolt fuse rating selection, use next formula. In > Isc * 1.56, In = fuse rating, Isc = short circuit current of the PV strings connected. The next fuse available with a current higher than In, should be selected. Example: Isc = 7.95 A. In = 1.56 * 7.95 = 12.4 A. The next higher fuse is 15A, this equals the fuse rating. 6 5.3.2 Equal strings All strings connected to the same Solar-input should exist of an equal number of identical PV modules. Mastervolt recommends that the maximum power connected to each inverter input will not exceed 13 kWp and that the total power must be distributed equally over the two Solarinputs as much as possible. October 2010 / StringMaster CS 2-6 SW / EN OPERATION 5.4 COMMISSIONING AFTER INSTALLATION To check the correct operation of the StringMaster, commissioning should be carried out during daytime only. 5.5 DE-COMMISSIONING If it is necessary to take the StringMaster out of operation, follow the instructions in order of succession as described below: Move the DC switch to the ON position (vertical). There are two ON positions, see figure 1. CAUTION! Follow below mentioned instructions in order of succession as described. 1 2 Make sure there is no DC voltage present Check with a suitable voltmeter whether the inputs and the outputs of StringMaster are voltage free. 3 Disconnect the MultiContact connectors from the inverter. 4 Disconnect the DC wiring. Now the StringMaster can be demounted in a safe way. 6 OPERATION 6.1 GENERAL After installation and commissioning the StringMaster is switched on by turning the DC switch to On. The switch has two On and Off positions to facilitate switching. 6.2 MAINTENANCE If necessary, use a soft clean cloth to clean the enclosure of the StringMaster. Never use any liquids, acids and/or scourers. Examine your electrical installation on a regular base, at least once a year. Defects such as loose connections, burnt wiring etc. must be corrected immediately. 7 CE DECLARATION OF CONFORMITY We, Manufacturer Address Mastervolt Snijdersbergweg 93 1105 AN Amsterdam The Netherlands Declare under our sole responsibility that the product: Article number Product name 131300300 Stringmaster CS 2-6 SW is in conformity with the provisions of the following EC directive: Low Voltage Directive 2006/95/EC The following harmonized standards have been applied: Low Voltage Switchgear EN 60439-1 Low Voltage Switchgear EN 60439-2 Low Voltage Switches EN 60947-3 Amsterdam, Ing. D.R. Bassie Product Manager Solar 23-08-2010 EN / StringMaster CS 2-6 SW / October 2010 7 TECHNICAL DATA 8 TECHNICAL DATA TECHNICAL SPECIFICATIONS GENERAL SPECIFICATIONS Model Part number Operating temp. Protection degree Relative humidity Safety class Weight Dimensions SOLAR INPUT (DC) Recommended PV power range Maximum input power String connections Safety measures 18kWp – 25 kWp 30 kW DC 2x6 - string box with DC switch, surge protection and string fuses DC fuses, Overvoltage protection, DC switch OUTLINE DRAWINGS 23.62 400 15,74 5.18 600 25.59 171,2 650 6.74 8.2 StringMaster CS 2-6 SW 131300300 -20°C ... 60°C / -4°F … 140°F IP 65 70% Class II 8.0 kg See figure 7 131,5 8.1 Figure 7: Dimensions in mm [inch] 8.3 ORDERING INFORMATION Part number Description 131300300 StringMaster CS 2-6 SW, string box for maximum 2x6 strings 131300100 Isolation transformer CS-IT20 Mastervolt offers a wide range of products for both grid connected and independent autonomous electrical installations. See our website www.mastervolt.com for an extensive overview of all our products. Snijdersbergweg 93, 1105 AN Amsterdam, The Netherlands Tel : + 31-20-3422100 Fax : + 31-20-6971006 Email : [email protected]