Reserve Power; Dk24 Power Supply Front Panel; Dk56 Power Supply Front Panel; Dk96 Power Supply Front Panel - Toshiba Strata DK24 Installation And Maintenance Manual

-24V 1 -24V 2
LG
FG
BATTERY
SG
CONNECTOR
FG
+
BATT
_
VOLTAGE POWER
POWER
-24V
LEDs
OUT
+5V
-5V
FIGURE 2-5

DK24 POWER SUPPLY FRONT PANEL

VOLTAGE LEDs
PPSU56
POWER+5V -5V
-24V 1 -24V 2 -24V 3 DC OUT
CIRCUIT
BREAKERS
FIGURE 2-6

DK56 POWER SUPPLY FRONT PANEL

4.01 The power supplies generate ±5VDC and -
24VDC output voltages (that are protected by
mechanical circuit breakers located on the power
supply front panel). Input voltage is provided by a
standard 117VAC, 15 amp circuit. Electrical char-
acteristics include:
•
Primary Power
§
Input AC: 85VAC ~ 135VAC
§
AC Frequency: 50/60 Hz
§
Wattage: DK24/65, DK56/140,
DK96/230
PPSU 24
CIRCUIT
BREAKERS
POWER
SWITCH
AC
POWER
ON
CORD
OFF
FG
POWER SWITCH
AC INPUT
AC IN
ON
OFF
BATT SG FG
LG FG
_
+
BATTERY
CONNECTOR
INSTALLATION-SYSTEM DESCRIPTION
CIRCUIT
BREAKERS
BATTERY
CONNECTOR
AC INPUT
RECEPTACLE
FIGURE 2-7

DK96 POWER SUPPLY FRONT PANEL

•
DC Voltage Output Specifications
§
-24VDC; -26.3 ~ -27.8
§
+5VDC; +4.5 ~ +5.5
§
-5VDC; -4.5 ~ -5.5
•
Circuit Breakers
§
24; -24V
§
56; -24V
§
96; -24V, +5V

4.10 Reserve Power

4.11 Two customer-supplied, 12-volt batteries (80
ampere hours maximum) can be connected in
series to the STRATA DK system as a power
failure backup. In the event of a power failure, the
system automatically switches over to battery power
without any interruption to existing calls or other
normal system functions. The length of time re-
serve power operates depends on the system
size, number of batteries provided, and the system
load. Typical reserve power duration estimates
are provided in Table 2-A.
2-5
SECTION 400-096-202
SEPTEMBER 1992
VOLTAGE
PPSU96 LEDs
+5V 1 -5V
+5V 1
+5V 2
+5V 2
-24V 1
POWER
-24V 2
-24V 3
-24V 4
-24V 5
DC OUT
+
BATT
_
POWER
SG
ON SWITCH
FG
OFF
AC IN
LG
FG