Filter
Top Products
3300 ICP Hardware User Guide
90 Release 3.3
Digital Service Unit Power
The AC power enters the DSU node at the Power Supply Unit (PSU) power input on the
backplane. The PSU converts the power to DC voltages and delivers it to the DSU backplane.
Operational Environment
Condition Specification
Temperature 32º to122ºF (0º to 50ºC)
Humidity 5-95% Relative Humidity, non-condensing
Maximum Heat Dissipation
- fully loaded (see Note)
266 BTUs per hour
Air Flow 150 cubic feet per minute at maximum output of the fans
Radiated Emissions The system meets Class A limits as outlined in FCC Rules, Part 15,
Subpart J
Conducted Emissions The system meets Class A limits as outlined in FCC Rules, Part 15,
Subpart J, and complies with conducted emissions standards as
outlined in BS800
Acoustic Emissions Maximum 50 dBA continuous, 75 dB intermittent (<10% duty cycle)
Static Discharge Withstands 50 discharges of each polarity through a 10 k resistor
connected to a 60 pF capacitor charged to 20 kV, and 20 discharges
of each polarity through 500 ohm resistor connected to a 100 pF
capacitor charged to 10 kV
Lightning Surge 2.5 kV peak, with a maximum rise time of 2 µs and minimum decay
time of 10 µs applied to power lead terminals, and 800 V peak with a
maximum rise time of 10 ms and minimum decay time of 560 ms
applied to outside plant interface terminals
Induction (Normal) 50 Vrms at 60 Hz, open circuit, longitudinal mode (Tip and Ring to
ground)
Power line Faults and Line
Crosses (Abnormal)
600 Vrms between Tip and Ring or to ground
Flammability Minimum oxygen index: 28%, as outlined in ASTM D2863-70 and
ASTM D28664-74; meets all safety specifications for product type
(CSA, UL, and BT) for use in office environment
Conversion factors: 1 watt is equal to 3.412 BTUs per hour, 1 ton of refrigeration is equal to 12,000
BTUs per hour or 3.516 Kilowatts, and 3/4 Kilowatt-hour is equal to 1 ton of refrigeration.
Power Supply
Operation 120 Vac/230.120 Vac
Maximum AC power input Watts 78 W
Equipment
Power Requirements
AC Cabinet 120 Vac, 6 amps
240 Vac
The input power is converted to ±5, ±12, -27 and -48 Vdc, and 80 Vac
ringing voltage by the power converter (AC)