Standby-Battery Calculation Worksheet - Gemini GEM-P1664 Installation Instructions Manual

Page 46

STANDBY-BATTERY CALCULATION WORKSHEET

Use the procedure given below to determine the required standby battery capacity in Ampere-Hours (AH). NOTE: It is not totally
accurate to merely multiply the combined standby current (in amperes) by the standby time (in hours) to obtain the battery capacity
(in ampere-hours), since other factors (control-panel charging capabilities, temperature, battery condition, etc.) affect battery
operation. The following calculations will yield the theoretical minimum required capacity.
1. STANDBY CURRENT
DEVICE QTY
GEM-P1664 1
GEM-EZM4/8
GEM-EZM8
GEM-RP1CAe2/
GEM-K1CA
GEM-RP1CAe2/
(1)
GEM-K1CA
GEM-RP2ASe2/
GEM-K2AS
GEM-RP2ASe2/
(2)
GEM-K2AS
GEM-RP3DGTL/
GEM-K3DGTL
(3)
RM3008
GEM-K4 / K4RF
TOTAL STANDBY CURRENT
(1)
Backlighting disabled (cut Jumpers W1, W2 & W3).
(2)
Backlighting disabled (cut Jumpers A, B & C).
(4)
Standby Time in Hours.
2. ALARM CURRENT
DEVICE QTY
TOTAL STANDBY CURRENT
(1)
1
GEM-P1664
BELLS
STROBES
HORNS / STROBES
TOTAL ALARM CURRENT
(1)
Alarm current drawn in alarm.
(2)
Alarm Time in Hours. Example: For a 15 minute alarm timeout, Alarm Time =
15/60 = 0.25.
MINIMUM REQUIRED BATTERY CAPACITY = BOX 2 + BOX
X
GEM-P1664 Installation Instructions
STANDBY CURRENT (Amps)
EACH
X 0.120 =
X 0.050 =
X 0.050 =
X 0.100 =
X 0.035 =
X 0.065 =
X 0.020 =
X 0.050 =
X 0.040 =
X 0.045 / 0.075 =
X
=
ALARM CURRENT (Amps)
EACH
(from Box 1, above)
X 0.100 =
X =
X =
X =
X =
X =
TOTAL
0.120
X
Amps
(Box 1)
(Standby Time)
TOTAL
0.100
X
Amps
(Alarm Time)
WI1424A 1/06
=
Hours
(4)
(Box 2)
=
Hours
(2)
(Box 3)
L
NAPCO Security Systems
AH.
AH.
AH.