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Amp-Ing-P1: System Power Requirements

The document provides system power requirements for a digital audio amplifier. It specifies that the AC branch current requirement is 1.17 amps and the secondary load requirement is 15.80 amp hours. It recommends selecting two 12V, 18 amp hour batteries which meets the secondary load needs. The battery distribution chart shows the secondary standby load makes up 80% of the battery use, while the secondary alarm load is 8% and spare capacity is 12%.

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Miguel Montero
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117 views3 pages

Amp-Ing-P1: System Power Requirements

The document provides system power requirements for a digital audio amplifier. It specifies that the AC branch current requirement is 1.17 amps and the secondary load requirement is 15.80 amp hours. It recommends selecting two 12V, 18 amp hour batteries which meets the secondary load needs. The battery distribution chart shows the secondary standby load makes up 80% of the battery use, while the secondary alarm load is 8% and spare capacity is 12%.

Uploaded by

Miguel Montero
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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System Power Requirements

DAA2-5025/DAA2-5070 Digital Audio Amplifier

Protected Premises: AMP-ING-P1 Date:


Address:
City: State: Zip:

Prepared By: Phone:


Address: Email:
City: State: Zip:

AC Branch Current Requirements 1,17 AMPS @ 220/240 VAC


Current required by source to power the fire
alarm system.

Secondary Load Requirements 15,80 Amp Hours


Total Secondary Load from the calculation table below.

Current Draw Time (hours) Total (AH)


Secondary Standby Load Required Standby Time
x
0,500 A 24 hours 12,00
Secondary Alarm Load Required Alarm Time (hours)
x
2,325 A 0,500 hours 1,16
Total Secondary Load 13,16
Derating factor x 1,2
Secondary Load Requirements 15,80 AH

Battery Selection 18 Amp Hours


Select batteries from the list below.
18 AH BAT-12180 Battery (12 volt)
Two Four (two 12VDC sets in parallel)
VERDADERO

Page 9 of 11
Battery Distribution Chart
Shows amp-hour distribution of your selections.

Spare Battery Capacity


Spare Battery Capacity
Secondary Alarm Load 12%
8%
Secondary Standby Load

Secondary Alarm Load


Secondary Standby
Load
80%

Comments
1. Battery size exceeds FACP capacity. BB-26 or other external battery box
2. Selected battery size meets secondary load requirements.
3. The selected batteries (18AH) are within the charger range of this power supply (12-200AH).

Spare Battery Capacity 2,20 Battery Selection (AH) - Secondary Load Requirements (AH)
Secondary Standby Load 14,40 Secondary Standby Load (AH) * Derating Factor
Secondary Alarm Load 1,40 Secondary Alarm Load (AH) * Derating Factor

Page 10 of 11
Device Current Draw
DAA2-5025/DAA2-5070 Digital Audio Amplifier
Quantity x [device current draw] = total current draw per device (in amps)
Part Number Qty Secondary Non-Alarm Secondary Alarm
DAA2-5025 with FFT Riser 1 x [0,40000] = 0,40000 x [0,50000] = 0,50000
BDA-25V (Backup) 1 x [0,10000] = 0,10000 x [0,22500] = 0,22500
SPSCR110 1 x [0,00000] = 0,00000 x [0,03200] = 0,03200

Total (Amperes): 0,5000 A 2,3250 A

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