Mircom FA-262 Manuel de l'opérateur télécharger pdf (Page 13)

FA-262 Installation & Operator’s Manual

2.8 Calculation for Standby Battery Requirement

Step Device

Current per

device (mA)

Number

of device

Total

Standby

Current (mA)

Total Alarm

Current

(mA)

1 FA-262

Standby:

x1 =

Alarm:

365

x1 =

Zone 1

Standby: x =

Alarm: 69 x 1 = 69

Zone 2

Standby: x =

Alarm: 69 x 1 =

NAC 1 Alarm: x

NAC 2 Alarm: x

RTI-265

Standby: 15 x

Alarm: 15 x

RAM-265

Standby: 15 x

Alarm: 25 x

UDACT-286

Standby: 45 x

Alarm: 60 x

RM-263

Standby: 0 x =

Alarm: 24 x

AUX+

Standby: x =

Alarm: x =

Total ‘standby’ and ‘alarm’ current: mA mA

Divide ‘standby’ mA and ‘alarm’ mA by 1000: Amp Amp

Select ‘standby’ time required (24 or 60 Hr.): Hr.

Standby Amp-Hr. - multiply 8 × 7 = (Amps × Hr.): Amp-Hr.

10 Select ‘alarm’ time required

(0.08 or 0.5):

Hr.

Alarm Amp-Hr. - multiply 7 × 10 = (Amps × Hr.): Amp-Hr.

Total Amp-Hr = standby Amp-Hr (9) + alarm Amp-Hr. (11): Amp-Hr.

Multiply the total Amp-Hr. by the safety margin: 1.20

Total battery Amp-Hr required to support the system:

Amp-Hr.

Note: Select a battery with an Amp-Hr. rating that is equal to or larger than the calculated minimum Amp-

Hr. battery required.

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Mircom FA-262 Manuel de l'opérateur Page 13

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