Siemens PAD-3 Installation, Operation And Maintenance Manual

406.2 BATTERY SIZE CALCULATIONSDevice Quantity Current per device(amps)Standbycurrent(A)Alarmcurrent(A)Multiply This column times this column =current1) PAD-3 ControlUnit1 or 2 A Aux. Pwr. always on (SW1-4 off) – 0.035AAux. Pwr. off @ AC fail (SW1-4 on) – 0.015A2) PAD-3 ControlUnit1 or 2 A 0.140 per PAD-3Notification Appliances – refer to the device manual for ratingsModel No. Quantity Alarm current3)Auxiliary Devices – refer to the device manual for ratingsModel No. Quantity Standby current Alarm current4)5) Total amperage required (totals for line 1, 2, 3 and 4) B,F A A6) Number of Standby Hours required (4, 24, or 60, per NFPA 72) Hrs.7) A.H. for Standby (without AC reporting delay) Multiply line 5 times line 68) A.H. for AC reporting delay C A.H.9) Total A.H for Standby (add line 7 and line 8) A.H.10) Length of Alarm Operation D Hrs.11) A.H for Alarm (multiply line 5 times line 10) A.H.12) Total Standby and Alarm A.H required (add line 9 and line 11) A.H13) Battery De-rating Factor 1.2514) Battery Amp-Hour Rating required (multiply line 12 times line 13) E A.H.A. Up to two PAD-3 boards can be connected to a common battery set. When calculating for 2 PAD-3 boardsI. Both boards must be mounted on System 3 rails in the same enclosure.II. One of the boards must have the battery charger circuit disconnected.III. The board with the ACTIVE charger is limited to 1.50 amps for the aux. power (terminals 18 and 19).IV. Both sets of battery connections are to be connected to the same battery set using 2 battery connection splitters, P/N 230-299203.B. The Alarm Current must never exceed 6.14 amps! (6 amps output for NACs and aux. power, 0.14 amps for internal operation)C. A.H. required for AC reporting delay – 0 hours = 0.00 A.H.; 60 minutes = 0.24 A.H.; 120 minutes = 0.60 A.H.; 180 minutes =0.96 A.H.D. Alarm operation length while on battery power varies with application and local codes. Check with the AHJ to determine if 5minutes (0.0833 hours), 30 minutes (0.5 hours), 1 hour, or 2 hours of alarm operation is required.E. Battery rating required cannot exceed 15 A.H. For battery ratings 7.0 A.H. or below, the full 3.0 amps are available for auxiliarypower (terminals 18 and 19). For battery ratings between 7.0 and 15 A.H., 1.50 amps are available for auxiliary power.F. The following table shows the maximum standby current allowed: When the Auxiliary Power Output is programmed toshutdown on AC power fault (SW1.4-ON), up to 3.015 Amps is allowed.Maximum Standby Current (A.)StandbyHours 7AH 10AH 15AH4 1.242 1.842 2.84224 0.207 0.307 0.47360 0.082 0.122 0.18990 0.055 0.081 0.126