6
016-562-B0-001, Rev. A (08/2019)
1.0 Introduction
The APP 9005C Service Power Supply (SPS) is a portable device used to provide temporary power to a remote PHY unit
for up to 8 hours while the existing node is being optimized on site prior to connecting it to the network and carrying traffic.
The APP 9005C SPS contains a front panel ammeter to measure the output current to the load, dual 90V outputs with an
auto-seize mechanism, and an “Output” indicator to verify AC output power.
APP 9005C Specifications
Input Voltage (VAC)
120 ± 15%
Input Frequency (Hz)
60
Input Current (A)
5 Max
Output Voltage (VAC)
90 ± 5%
Output Current (A)
4
Output Power (VA)
(Continuous)
360
Output Current Limit
150% of Output Rating
Efficiency
90% typical @ rated load
Finish
Flat Black Durable Powder Coat
Operating Temperature
-40° to 122°F
(-40° to 50°C)
Dimensions (in/mm)
(H x W x D)
10.38" x 9.5" x 17.75"/
264 x 241 x 451
Weight (lbs/kg)
31.5 / 14.3
Enclosure Type
CSA NEMA3R
Table 1-1, Specifications
1.1 Theory of Operation
The APP 9005C SPS contains a ferroresonant transformer and a capacitor. During AC LINE operation, utility power
is fed into the primary winding of the ferroresonant transformer. An AC capacitor becomes the resonant circuit of the
ferroresonant transformer which provides noise and spike attenuation, short circuit current limiting, and output voltage
regulation.
Note:
The ferroresonant transformer produces a “quasi” square wave output which resembles a rounded square wave.
120V AC power enters the Service Power Supply where it is regulated to 90 VAC, and passed onto the remote PHY unit
via coax cable connected to Output 1 or 2.
Use only a true RMS AC voltmeter. Non-RMS reading meters are calibrated to respond to pure
sine waves and will not provide an accurate reading when measuring a quasi-square wave
output.
NOTICE:
DO NOT unplug output connector while unit is in operation! Power switch must be turned
off first.
WARNING! ELECTRICAL HAZARD
