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Dual String System – 5kW Output Single Phase <br />Consider a typical 5kW system which would supply 22A at 230VAC: <br />Inverter: Input (per string): 600VDC (VOC), 18A (IDC), 36A (IDC max) Output: 230VAC (VAC), 25A (IAC max) <br />Solar Panel: 64.9V (VOC), 6.46A (ISC), 5.98A (Impp), 327Wp (Pnom) No. of panels: 8 per string <br />Calculation: V = 8 x 64.9 x 1.15 = 597.08V I = 6.46 x 1.25 = 8.08A <br />For this configuration, each string is to be switched at these levels so the IMO SI16-PEL64R-4 rated at 16A for 700VDC per string is suitable for <br />the DC switch and the PE69-3025 rated at 25A is suitable for the AC switch. <br /> DC Isolator Inverter AC Isolator <br /> SI16-PEL64R-4 5kW PE69-3025 <br /> PV Arrays <br />+ + + + <br />- - - - <br />+ + + + <br />- - - - <br />L <br />N <br />E <br />Existing AC <br />Equipment <br />L <br />N <br />E <br />+ + + + <br />- - - - <br />+ + + + <br />- - - - <br />High Voltage Multi-string System – 12.5kW Output Three Phase <br />Inverter: Input (per string): 900VDC (VOC ), 18A (IDC), 36A (IDC max) Output: 4000VAC (VAC), 20A (IAC max) <br />Solar Panel: 64.9V (VOC), 6.46A (ISC), 598A (Impp), 327Wp (Pnom) No. of panels: 12 per string <br />Calculation: V = 12 x 64.9 x 1.15 = 895.62V I = 6.46 x 1.25 = 8.08A <br />For this system there are several options to consider. If each string is to be switched individually then the SI25-PEL64R-2 <br />rated at 11A for 1000VDC is suitable for the DC switch. If there is a requirement to isolate the strings as pairs then the <br />SI25-PEL64R-4 is suitable. If all strings are to be isolated using one DC isolator then the IMO SI25-PEL64R-8 is suitable. The <br />PE69-3025 rated at 25A is suitable for the AC switch in each case. <br />Alternatively, if the requirement is to still have the capability of isolating each string individually whilst retaining a single housing unit, then an <br />IMO distribution box populated with SI25-DBL-2 is suitable. These devices use the same switch block as the SI25-PEL64R-2 so have the same <br />rating of 11A at 1000VDC. <br />This document is meant as a guide and IMO Precision Controls shall not be liable in any event whatsoever for any indirect, special or consequential damages, arising out of the use of the <br />products covered by this document at any time or howsoever caused by the goods. IMO Precision Controls excludes any warranty, condition or statement, express or implied, statutory <br />or otherwise, as to quality, merchantability, or fitness of the goods for any particular purpose. <br />Leaders in Solar Safety10 <br />534 S Sycamore St <br />- 10110979707/01/22