5901 23RD DR W ZAP ENERGY 2024-04-12

Free vent area available calculation detail The leakage area during discharge will be: • 334 sq in for the Enclosure Only with the enclosure set up in its Positive Discharge Period Condition, where any dampers or installed PRV were fixed in the position they would assume under +125 Pa. Additional PRV area required detail The Enclosure Only provides 334 sq in of positive venting area. Since this is more than the required total of 206 sq in, this enclosure does not require any additional PRV area to maintain structural integrity and pass the peak pressure procedure in the positive direction. Test Data Appendix- Capacitor Room Enclosure Construction Data The maximum flooded height used in the calculations is 11.1 ft. The equipment was installed in the room, and the top of the rack was measured to be 8.0 ft, so 8.0 ft was taken as the minimum height for protection. Net protected volume used is 5,320 cu ft. Building elevation used is 0 ft, and the elevation correction factor used in the calculations is 1. Total Enclosure Leakage test data Based on measured values, the enclosure alone has an equivalent leakage area of 263 sq in at a reference pressure of 10 Pa. The following table represents the results from the enclosure integrity procedure carried out on the whole enclosure, with all intentional openings sealed. Test conditions , Test date 2023-03-15 Inside temperatureTe [oF] 68 F Outside temperature, Test time 07:05:37 To [oF] 68 F Operator location outside Bias pressure, Pbc [Pa] 0.60 Depressurize Data Pressurize Data Induced pressure [Pa] 10.1 50.4 -10.0 -50.0 m Fan Pressure [Pa] 224.5 m 192 4 tw U tw r- r- Flow [CFM] 923 a r- 869 oc � oc on C Fan Pressure [Pa] 123.5 do r- 57.5 oc r; xt oc Page 6 of 12