SYSTEM RACK
4-13
4.3 SIX SHELF 3000 SERIES SWITCH
The system rack is a framework for modules that
consists of up to 6-shelves with 13-slots per shelf. In
each shelf, 12-slots are for function modules and
1-slot is reserved for the power module. The power
supplies for the shelves are located in the lower
portion of the rack framework. The framework also
provides support for interconnection wiring, routed
between shelves, and external devices.
4.3.1 POWER CONSUMPTION
The following tables shows the average voltage,
current and power for each supply voltage per card
(based on loading of 72 cards).
Total watts including TIM-DID is 5.74W.
Excluding the TIM-DID provides a total of 4.3W for
normal modules. The total wattage of the terminal is
found by multiplying the wattage of a module by the
number of modules.
Total Watts x No. of Modules = Terminal Power
The wattage required by the power supply is
found by dividing the total wattage of the terminal by
the efficiency of the power supply (0.7).
Terminal Power
÷
0.7 = Wattage of Power Supply
The BTUs per hour are found by multiplying a known
value (3.6) by the wattage required by the power
supply.
3.6 x Wattage of Power Supply = Btu/Hr.
EXAMPLE:
4.3W x 72 = 310W
310W
÷
0.7 = 443W
3.6 x 443W = 1,595 Btu/Hr
4.3.2 EQUIPMENT REQUIRED
1. Digital Multimeter, voltmeter resolution to 0.001V.
2. Transmission test set, HP 3551A.
3. IBM NT compatible computer, with Call Processor
Software.
4. Two CIMs (023-3039-035)
Table 4-11 AVERAGE VOLTAGE/CURRENT/
POWER
Voltage
Current
Power
+5V DC
0.50A
2.50W
+12V DC
0.10A
1.20W
-12V DC
0.05A
0.60W
-48V DC
0.03A*
1.44W
Total
5.74W
* DIDs only.
Table 4-12 BUS BAR RESISTANCE
Ohm Meter Lead Positions
Resistance in
Ohms
From
To
Bus Bar A1-A2
Chassis/Frame
Infinite
Bus Bar A1-A2
B1-B2
Black
0
Bus Bar A1-A2
C1-C2
Red
Infinite
Bus Bar A1-A2
D1
Blue
Infinite
Bus Bar A1-A2
E1
White
Infinite
Bus Bar A1-A2
F1
Green
Infinite
C1-C2 Red
D1
Blue
Infinite
D1-Blue
E1
White
Infinite
E1-White
F1
Green
Infinite
Содержание 3000 SERIES
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Страница 148: ...POWER TERMINATION MODULE PTM 16 2 Figure 16 1 POWER TERMINATION MODULE ALIGNMENT POINTS DIAGRAM ...
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Страница 178: ...POWER SUPPLY 22 4 Figure 22 6 POWER SUPPLY DRAWER ...
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Страница 214: ...Part Number 001 3139 005 10 03 Printed in U S A ...