ADEMCO VISTA-128B Guia de preparacion descargar pdf (Pagina 4)

ADDENDUM: Battery Backup (continued)

Note: The cabinet supplied with the VISTA-128B panel can house up to 12V, 14AH batteries (two

12V, 7AH batteries wired in parallel). The VISTA-ULKT kit provides a cabinet that can house up to

12V, 17.2AH batteries and that may be used with this panel. The total standby current drawn from the

auxiliary power and polling loop outputs combined must be limited to 270mA when 14AH batteries are

used; and to 390mA when 17.2AH batteries are used.

Table 2: Total Current Drain Table

Source of Current Drain Total Standby Current Total Alarm Current

Auxiliary Power Output:

Polling Loop Output:

Bell Output: Not Applicable

PCB Current: 250mA 330mA

Total Current:

Table 3: Battery Calculation Table

Capacity Formula

Calculated Value

Standby

Capacity

For 4-hour standby time, use following formula:

Total standby load x 4 hours x 1.4 loading/contingency factor

For 24-hour standby time, use following formula:

Total standby load x 24 hours x 1.1 contingency factor

Alarm

Capacity

Total alarm load x 0.06 hours (for 4-minute

alarm)

x 0.25 hours (for 15-

minute alarm)

Total

Capacity

Add standby and alarm capacities

Table 4: Battery Selection Table

Capacity Recommended Battery Comments

4AH

Yuasa NP4-12

7AH Yuasa NP7-12

12AH Yuasa NP12-12 Fits in large mercantile cabinet only

14AH Yuasa NP7-12 Connect two in parallel

17.2AH Yuasa NPG18-12 Fits in large mercantile cabinet only

1 2 3 4 5 6 7 8 9 ... 251 252

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ADEMCO VISTA-128B Guia de preparacion Pagina 4