2 current draw worksheet for ms-25c ulc, 2 current draw worksheet for ms-25c ulc -8 – Fire-Lite MS-25E Addressable Fire Control Panel User Manual

Page 28

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Model MS-25 Installation and Operation Manual

3-8

53688

3.6.1.2 Current Draw Worksheet for MS-25C ULC

Use to determine amp-hour requirements during alarm/battery standby operation. (Copy the
page if additional space is required.) You can install up to 25 SLC devices and two ANN-80C
Remote Annunciator. The maximum battery size for ULC installations is 18 Amp/hr.

Table 3-3: Current Calculation Worksheet for Devices for ULC

Device

# of Devices

Current per Device

Standby

Current

Alarm

Current

For each device use this formula: This column X This column = Current per number of devices.

Fire Panel (Current draw from
battery)

1

Standby: 165 mA

165 mA

Alarm: 220 mA

220 mA

Accessory Modules

ANN-80C Remote Annunicator

2

Standby: 37 mA mA

Alarm: 40 mA

mA

Addressable SLC Detectors

HFS-PA

25 max.

Standby: 0.27 mA

Alarm: 6.5 mA

mA

mA

HFS-PTA

mA

mA

HFS-DA

mA

mA

HFS-TA

mA

mA

SD355A

mA

mA

SD355TA

mA

mA

D355PLA

mA

mA

H355A

mA

mA

Addressable SLC Modules

HFS-MMA

25 max

Standby/Alarm 0.375 mA

mA

mA

BG-12LX

Standby/Alarm 0.375 mA

HFS-MRA

Standby/Alarm 0.255mA

mA

mA

MMF-301A

Standby/Alarm 0.375 mA

CRF-300A

Standby/Alarm 0.375 mA

I300A

10 max

Standby/Alarm 0.45 mA

mA

mA

A

Total System Current

Auxiliary Devices

Refer to devices manual for current rating.

Alarm/Standby: mA

mA

mA

Alarm/Standby: mA

mA

mA

Alarm/Standby: mA

mA

mA

B

Auxiliary Devices Current

Notification Appliance Circuits

Refer to device manual for current rating.

Alarm: mA

mA

Alarm: mA

mA

Alarm: mA

mA

C

Notification Appliances Current

mA

D

Total current ratings of all devices in system (line A + line B + C)

mA

mA

E

Total current ratings converted to amperes (line D x .001):

A

A

F

Number of standby hours (24 or 60 for NFPA 72, chapter 1, 1-5.2.5):

H

G

Multiply lines E and F.

Total standby AH

AH

H

Alarm sounding period in hours. (For example, 5 minutes = .0833 hours)

H

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