SUNNY BOY 2500 / 3000 - Installation Guide - Sinetech

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Replacing the VaristorsSMA Solar Technology AG8. Replace the varistor concerned with a new one asshown in the illustration to the right. Ensure thevaristor is installed the right way round! If you donot receive a special tool for operating the terminalclamps together with your replacement varistors,please contact SMA Solar Technology. As analternative, the terminal contacts can be operatedusing a suitable screwdriver. Since the failure ofone varistor is generally due to factors that affect allvaristors in a similar way (temperature, age,inductive overvoltages), it is highly recommendedthat you replace both varistors, not just the one thatis obviously defective. The varistors are speciallymanufactured for use in the Sunny Boy and are notcommercially available. They must be ordereddirectly from SMA Solar Technology (SMA ordercode: "SB-TV4").3 21Insert the special tool toopen the terminal clampRemove the varistorThe pole with thesmall loop (crimp)must be fitted toterminal 1 whenreplacing the varistor.If no replacement varistors are available onsite, the Sunny Boy can be temporarily runwithout them. To do this, remove the varistorsyou identified as being faulty as describedabove and in their place, bridge the terminals2 and 3 with a length of wire.3 213 21NOTICE!The Sunny Boy could be irreparably damaged by overvoltage!If varistors are missing, the Sunny Boy is no longer protected against overvoltages.• The Sunny Boy must not be operated without varistors in systems with a high risk ofovervoltages.• Replacement varistors should be obtained as soon as possible.9. Reconnect the PE connection on the cover and close the Sunny Boy.10. Connect up the faultless PV generator strings to theinverter.11. Close the unused DC input sockets with the capsincluded in the delivery.+ + + - - -38 SB25_30-IEN083212 Installation Guide
SMA SOLAR TECHNOLOGYSUNNY BOYSMA Solar Technology AGReplacing the Varistors12. Reinsert the handle of the Electronic Solar Switch inthe socket on the underside of the Sunny Boy.NOTICE!The Electronic Solar Switch can be damaged if it is inserted incorrectly!The Electronic Solar Switch can be damaged if it has not been attached properly.• The handle must be firmly attached to the socket of the Electronic Solar Switch andrest against the housing.• Check that the handle is positioned correctly before recommissioning the inverter.13. Switch the line circuit breaker to the "On" position.On14. Now check whether the LED display on the SunnyBoy indicates that the device is functioningcorrectly.NOLOGYOYOperation (green)Ground fault (red)Fault (yellow)If no ground fault and no defective varistor were found, there is probably a fault in the Sunny Boy. Inthis case, contact the SMA Service Line to discuss what to do next.Installation Guide SB25_30-IEN083212 39
Page 4 and 5: Table of ContentsSMA Solar Technolo
Page 6 and 7: ForewordSMA Solar Technology AG2 Fo
Page 8 and 9: SMA SOLAR TECHNOLOGYSUNNY BOYForewo
Page 10 and 11: Overview of devicesSMA Solar Techno
Page 12 and 13: SMA SOLAR TECHNOLOGYOverview of dev
Page 14 and 15: Overview of devicesSMA Solar Techno
Page 16 and 17: SMA SOLAR TECHNOLOGYSUNNY BOYInstal
Page 18 and 19: SMA SOLAR TECHNOLOGYSUNNY BOYInstal
Page 20 and 21: SMA SOLAR TECHNOLOGYSU NY BOYInstal
Page 22 and 23: InstallationSMA Solar Technology AG
Page 34 and 35: Opening and Closing the Sunny BoySM
Page 36 and 37: Replacing the VaristorsSMA Solar Te
Page 40 and 41: The communication interfaceSMA Sola
Page 42 and 43: Technical dataSMA Solar Technology
Page 50 and 51: ContactSMA Solar Technology AG50 SB
Page 52: SMA Solar Technology AGwww.SMA.deSo

SUNNY BOY 2500 / 3000 - Installation Guide - Sinetech

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