HomeMy WebLinkAboutFire Alarm Battery Calculations ,
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7.2 Standby Battery Calculations
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A B C
AC Power On AC Power Off In Alarm
Normal Current(mA) Minimum Current(mA) Ntaximum Current(mA)
Model Qty. Each Each Each
Number Unit' a`Y' Total Unit* nty. Total Unit; aty' Total
I Used I I I
I D9412GV2/ � 225 x 1 =225 225 x 1 =225 300 x 1 =30d
� Q7412GV2 : _ ,_ : , :
ID 125 B � 22 x Qty =� 2 x Qty — : ,2� 150 x Qty = /57r
I D127` 5 ! x Qty : _ � x Qt�y� — : 55 x Qtyl =
D1 29 22 x Q�y = 22 x Qty = 23 x Q�y =
__ ,_.
Qt 85 240 ` x Q�y = 245 x Qty = 300 : x Qry' -
_ _ _ ; __
D192C � 25 _ , x Qty = �i�� �5 _ x Q�y -� 50 x Qty = �...�� ,
� D192G 3� x Q�y - 35 ` x Clrf' = 100 ' x Qty; -
i D1 255 � 10^ x Qty 'JV 1 Oo x Q�y _ ,�� : 206 x Qty _ �C%f-
I D1256 104 ` x Qiy . - 1 Go ° x Qiy - 206 x Qty; _
_ _ _ ._ . _ _
D1 257 _ __. 1�� x Qty = _ 1 G6 x Q't,� __ 206 x Qiv_ __
D12o0 2d0 .`x Qtv ' = 200 x Qij - : 250 ' x Clty:': _
_ _ __
_ _
D720 20 x Qty = 20 x Qcy = 10G x Qiy =
D8125 5� x Qiy ' = 50 x Q'ry' = 50 x Q�y ' . = I
D8125i�AUX' - _ _ '
D3127T/U 3 x Qry = 3 ! x CZy = 4 x Qty ; = I
ID8128D 51 x Q�y = 01 x Q�y = 51 x Qty =
I:D8129 26 x Qiy = 20 x Qy - R..�e�tc foctnote2 = I
D8130 7 x Qty = 7 x Qty - 60 x Qty -
ID9127TIU 0.� z Q�y = 0.5 x Q�f = 0.8 ' x Qty
D9131 A 21 ,x Qiy - _ �1 x Qiy : - 23 x Qty =
� D9210B 110 !x C1ty . = 110 x Qty; = t 10� - x Qty , _
I D928 % 18. x Qiy = i� 1 o x Q�y_ �- J�. 100 x Qty , r f� :
I
I`DX4010i 50 x Qzy = 50 x Qty' = 55 _ x Q-y -
iDX4020i . 80 x Qty = 80 x Qty = 84 x Qty =
Ratings of other devices in the systern that are not shown above: -
I - �. _ - - _. _
�':`U�j �-� r�� x Qiy I � x Qty ? �= x Qty �?;�
I��'�=-�"�a Y ,e� Xn�y =_� ' f T Xaiy -3 �-� `Xa�� _ �-`�c�
� X a�� = X n�y = X a�i =
X nty - X aty : = X at� _
_z Qty -._ _ x Qty _ . _ .x Q'ry_ -
_. _
Total A= /�/ :Tatal B = ���� .Total C =�''1��
' Refer to Table 3 en page 1 9�o de!ermine mzximum currents for'h= D81 25PAUX ard its accessories.
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� Tne In Alarm caicula�ion for tne D81 29 is: 20 x Qiy=22.5 x number of relays j
—� -- - --� - -��°-_-- — -_ --�---— - ---___—
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V Use 1 10 mA=reader currert.Do not exceed 260 mA. I
20 Bosch Security Systems � 5/05 � F01 U003639B
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8.0 NFPA 72 Fire Alarm A�plications
Table 5: Standby Battery Requirements
_
Type I Required Capacity I Calculations
I Household Burglary and Commerciaf 4 h'
Burglary .
: _ ,:: ,
Bank Safe and Vauli 72 h (UL 3c5). Auxiliary power current
ror ail d2�iices, inrluding keypads, must
� be limited to 300 mA or less to meet this __
requirement.
Central S�atioR or Local Fire Alarm 24 h+� min of alarm operation.
� Ref2rtQ /able 6. :'
Remote Station or Aux liay Fire Alzrm 60 h -5 min of Glarn operation. I I
Refer�o TaD/e 7
j Housenold Fire�^JGrning Equipmen� 2�h+4 min of alarm operaiion.
� Refer to Iabie 8 on page 22.
8.1 Stendby Battery Calculation for NFPA 72 Fire A�arm Applications
Reier �o Iabl�3 on page 1J for totals B and C u�ed in�h� formulas belo��-. `b'hen conneccir� r�ti o batteries, u:e
either the D122 Dual �atterv tiVi:in`Harness or the DS132 Battery- Char�er �Iodule.
8,2 Cenira! Station or Local Systems
Central Station or Local S�-stems reauire 2! h oi standb�� plus ,� min oi alarm operation at the end of�he 2!-hotir
, .
per.od. �� single baner� is sometine� adequate for central station sy-stems, but t-�vo batieries must be ins�alled to
meet 'tne basic s�andb�-requirements ior a local s�ste� installation. Use the baCery ampere-hour (Ahj calculaaons
�o coniirm compliance. The formnla in T¢ble 5includes the calculation `or � min of alarm operation a� the end of
�he 21-hour period, as ��-ell as a 10°,%o contingencv factor that allo��:s for depletion of baRer� capaci�,��vith a,e.
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iTable 6: Central Stations or Local S��s�e+7s Ah Calculation Formula i
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I �;il� " �'3' �r
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iTotal B Hours Total C ' Hours Contingency Total Ah'
� ( I��` x 24) ''_ E .,,�L . X � - �
t .G83 — `10�/� — : ^ ..,.
� `I otal P,h reGuiremerts must rct exceed Ah capaci�/o�62iteries:
Lbtio D1 26 Bz�iares=1^Ah;
Cne D1218 BatiOry=1 7.2 Or 19 f'�h.
8.3 Remote Station or Auxiliary Sysiems
Remo�e Station or Au.xiliary- Sys�ems require 60 r. of s�andbti-plus 5 min of alarm operation at the end of ihe
b0-hour period. � D�13? Batter�� Char`er 1�Iodu1? �ciih additional bat�eries installed in a s?parate D�lOrJ- or
D�10�� Enclosure mi�ht be required in the s�-stem to meet the basic standby requirements for a remote stason o:
au�iliary� s�-stem installation. Use batierv�h calculations to confirm compliance. The formula in Table 7includes
the calculation for � min of alarm operation at the end of�he 60-hour pzriod, as �cell as a 10"�u continjencv facto:
that allo��-s for depletion of batter�� capacitv �vith age.
ITable 7: Remote Station or Auxiliary Systems Ah Calculation Formula
� ,
Total B Hours Total C Hours Contingency Total Ah*
( z 60} ,- ( x .d83? + '10�% —
_ _-- — __ — --------
'Total�h requirenerts must net exceed Ah capacity o�bareries
rivo D126 Batteries=14 Ah;
I one D1218 Batter�=1'.2 or 1 8 Ah. I
Bosch Securiiy Sys�ems � 5/05 � F01 U003639B 21
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Booster Power Suppiy Battery Calcs
Existing Equipment-
AL600ULADA NAC Power Supply-Stand-by current=75mA
Horn/Strobes P121575 Alarm current= 152mA x 7 = 1.064+
Strobes P121575 Alarm Current= 142mA x 12 = 1.704+
New Equipment :
HSR Horn/Strobe Alarm Current= 159mA x 2 = .318+
STRC Strobe Alarm Current= 140mA x 2 = .280= 3.366 Total
.075 x 24 hours Stand-by= 1.8+
3.366 x .084 (5 min.) Alarm= .283+
20% Buffer= .417
Total = 2.5 Ah Battery