Instruction manual

Strata DK424i
Primary/Reserve Power Cabinet Hardware
Strata DK General Description 6/00 31
Table 26 Typical Reserve Power Duration Estimates (in hours)
Primary/Reserve Power Cabinet Hardware
The lightweight and compact design enables easy wall or floor mounting. The BFIF hardware kit
is needed for floor mounting (see Table 27). If floor mounting three or more cabinets, AC and
reserve power must be connected to the BCCB conduit connection box option by a licensed
electrician. If more than two cabinets require reserve power batteries, the BBDB must be installed.
Wall mounting the system does not require special hardware.
Underwriters’ Laboratory (UL) and local electrical codes require certain standards for connecting
commercial AC and reserve power to the Strata DK424i system. Table 27 describes which
assemblies may be required to meet UL and local electrical code standards.
Table 25 Reserve Power Characteristics
Battery Charger Characteristics
Charger: current limiting
Nominal float voltage: 2.275 volts/cell
Charge current: 0.7 amps. maximum
Battery discharge cut-off voltage: 20.5
±0.5VDC
Maximum Battery Consumption:
-24VDC
1 cabinet
2 cabinets
3 cabinets
4 cabinets
5 cabinets
6.0 amps.
12.0 amps.
18.0 amps.
24.0 amps.
30.0 amps.
Number of Cabinets 1 2 3 4 5
Estimated operation time
Two-battery configuration
12.0 hr. 6.0 hr. 4.0 hr. 3.0 hr. 2.5 hr.
Estimated operation time
Four-battery configuration
24.0 hr. 12.0 hr. 8.0 hr. 6.0 hr. 5.0 hr.
DC Current Drain (-24VDC) 4.6 amps. 8.7 amps. 12.8 amps. 16.9 amps. 21.0 amps.