DK424i Installation
Power Considerations
7-4
Strata DK I&M 6/00
Power Considerations
Each DK424i Base and Expansion Cabinet houses a power supply that furnishes power to all of
the stations and some of the peripherals that interface with the cabinet (see
).
Reserve Power
Two or four customer-supplied 12VDC reserve batteries can be connected to the system to
maintain normal operation during a power failure (see
and
). The batteries are kept
in a highly-charged state by the standard power supply and must be connected when the system is
operating normally. Fully charged batteries must be connected when normal AC power is
available, batteries cannot be connected after/during an actual power failure.
Table 7-3
Typical Reserve Power Duration Estimates (in hours)
Underwriters’ Laboratory (UL) and local electrical codes require certain standards for connecting
commercial AC and reserve power to the Strata DK424i system.
describes which
assemblies may be required to meet UL and local electrical code standards.
Table 7-1
DK424i Electrical Characteristics
DK424i Primary AC Power Voltage
Input AC
AC Frequency
Watts per cabinet (continuous)
Watts for five cabinet system
115
±
10VAC or 208
±
20VAC or 240
±
20VAC
50/60 Hz, Single-phase
180
900
DK424i Primary Power Current Consumption (Rating in Amperes)
120VAC
208VAC
240VAC
1 cabinet
2 cabinets
3 cabinets
4 cabinets
5 cabinets
3.2 amps
6.4 amps
9.6 amps
12.8 amps
16.0 amps
2.2 amps
4.4 amps
6.6 amps
8.8 amps
11.0 amps
2.0 amps
4.0 amps
6.0 amps
8.0 amps
10.0 amps
Power Supply Unit (BPSU672)
DC voltage output specification
-24VDC (-26.3~-27.8VDC, 6.0 DC amps )
+5VDC (+4.5~5.5VDC, 4.0 DC amps)
-5VDC (-4.5~-5.5VDC, 0.8 DC amps)
Table 7-2
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 Charger Drain:
-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
12.0hr
6.0hr
4.0hr
3.0hr
2.5hr
Estimated operation time Four-battery
configuration
24.0hr
12.0hr
8.0hr
6.0hr
5.0hr
Typical battery Current Drain (-24VDC)
4.6amps
8.7amps
12.8amps
16.9amps
21.0amps
Содержание Strata AirLink DK40i
Страница 22: ...Introduction Related Documents Media xx Strata DK I M 6 00 ...
Страница 48: ...DK14 Installation DK14 Wiring Diagrams 1 26 Strata DK I M 6 00 ...
Страница 220: ...DK424 Installation Remote Cabinet Installation Instructions 5 68 Strata DK I M 6 00 ...
Страница 262: ...DK424i Configuration Primary Reserve Power Cabinet Hardware 6 42 Strata DK I M 6 00 ...
Страница 450: ...Universal Slot PCB Wiring Option Interface PCB Wiring Diagrams 10 42 Strata DK I M 6 00 ...
Страница 592: ...Peripheral Installation Enhanced 911 Service E911 12 84 Strata DK I M 6 00 ...
Страница 616: ...ACD Installation Spectrum Electronic Wall Boards 13 24 Strata DK I M 6 00 ...
Страница 634: ...Fault Finding Fault Isolation Flowcharts 14 18 Strata DK I M 6 00 ...
Страница 704: ...ISDN Interfaces ISDN Disconnect Cause Code 16 54 Strata DK I M 6 00 ...