BLACKHAWK! Power Supply Blackhawk Series Broadband Power Supplies Benutzerhandbuch

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Section 2:   lntroduction 
 
Blackhawk Series Product Overview 
 
The MultiPower Blackhawk Series power supplies provide filtered and regulated AC 
output power of proper voltage and current values to operate amplifiers, nodes and 
other active devices in CATV and broadband networks.  These supplies are designed 
to normally power the network from the commercial AC line while maintaining an 
emergency battery in a state of full charge. If the commercial AC line fails for any 
reason or if line voltage exceeds preset low or high limits, the low voltage inverter 
within the power supply immediately begins providing power to the network load while 
drawing its operating power from the battery.  After commercial AC line power has 
been restored, the power supply will revert to its normal operating mode supplying 
power to the network load while drawing operational power from the commercial AC 
line.  Simultaneously, the internal battery charger within the power supply will recharge 
the battery. The power supply will continue providing filtered and regulated AC to the 
network load. 
 
All Blackhawk Series power supplies operate as standby units, transferring between 
power sources (AC line and inverter) in less than one cycle of power.  Inverter transfer 
from line mode to battery mode and from battery mode to line mode is synchronous 
resulting in minimum load power anomolies.  Refer to Fig. 2-1 for a typical output power 
wave-form during transfer from commercial line to inverter power.   
 
 
 
Fig. 2-1  Typical Output Transfer Waveform: Nominal 90 Volt Output, 80% Load 
 
 
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