Laserfiche WebLink
SUNNY 8OY 3000TL-US/4000TL-US/5000Tl-US <br />Secure Power Supply RE:ill <br />Technical Note <br />1 Introduction <br />The Secure Power Supply ISPS] feature is a factory-in:talled option to the following types of inverters: <br />• Sunny Boy 300OTL-US (SB 3000Tl-US-22) <br />• Sunny Boy 4000TL-US (SB 4000TL-US-22} <br />• Sunny Boy 500OTL-US (SB 5000TL-US-22] <br />When equipp,ed with an SPS module the inverfer b capable of switching from interactive operation <br />to standalone operation. In standolone operation Ihe inverter can supply standby power to o <br />dedicated power outlet ilia: has been wired to the SPS module within the inverter. When sufficient <br />sunlight is available this outlet can be used to run sma[1 appliances and charge electronic devices <br />during prolonged ulihty power outages. <br />2 Code Compliance <br />Arlicle 690 Solar Photovoitaic {PV) Systems of ANSI/NFPA 70, National Electrfcal Code® defines <br />an interactive system as "a solar photovotaic system that operates in parallel with and may deliver <br />power to an electrical production and distribufion network,n and a standalone system as "a solar <br />photovoltaic system that supplies power independently of an electrical produclion and distribution <br />network.' <br />Sunny Boy Tl-US inverters are intended to be installed and operated primafily in utilitrinteractive <br />systems. When equipped with the SPS module the inverter is capoble of switching from interactive <br />operation to standalone operation to suppy power to a dedicated 120 V power outlet. <br />Seclion 690.61 of ANSI/NFPA 70, National Electrical Code<t permits a normally inferadive system <br />to operate as a standalone system when disconnected from the utility electrical power system. <br />Sunny Boy TE-US inverters equipped with the SPS module comply with National Ejechica; Code® <br />690.61 For interactive and stand-alone operation. <br />Section 690.10[B) of ANSI/NFPA 70, Nofional Ejectrical Code®requires overcurrent protection for <br />conductors "between the inverter output and lhe building or structure disconneding means" in a <br />standalone system. When installed and wired according to ihe installation manual, the SPS outlet <br />conductors form a dedkated circuit that is isolated from other premises wiring of the building or <br />structure. Power to the SPS outlet can only be supplied from the inverter and the inverter operates as <br />a current hmited device. Therefore, the conductors between the inverter and tile SPS outlet should not <br />require additional overcurrent protection. <br />EPSCompl-US-T&en-11 I Version 1.1 ®® <br />2 Code Compfiance |SMA America, LLC <br />Power <br />distribution <br />gild <br />1 <br />PV module <br />L==, 23:* <br />Grid 1 <br />detedion 1 Loads <br />F- <br />,/4. Sps *. Logic <br />1 <br />DC 240 Vdisconnect ' l,-) ' OV <br />SPS oudet S PS swilc <br />Figure 1: Inverter in utifily-interactive operation <br />t Power <br />di;t,ibulion <br />gfid <br />No grid <br />Grid <br />monitoring <br />kJ <br />discom,jij, c < ;j ' <br />detedion I loods <br />4. SPS <br />' Logic 686 <br />120 V 0V <br />User must manually <br />--lum ON (Clow] to <br />initiate S PS ope«,sion <br />SPS outler SPS .witch <br />Figure 2. Inverter in standolone operalion [secure power] <br />2 aSComp[UNB-end I Technical Note <br />PV module