The Intelligent CableUPS
®
powers signal processing equipment in cable television and broadband LAN distribution
systems. The transformer module provides a critical load with current-limited regulated AC power that is free of spikes,
surges, sags and noise.
During AC line operation, AC power entering the power supply is converted into a quasi square wave and is regulated by
a ferroresonant transformer at the required output voltage. The regulated voltage is connected to the load via the output
connectors and some power is directed to the battery charger to maintain a float charge on the batteries.
When the incoming AC line voltage significantly deviates from normal, the Inverter Module automatically switches to
standby operation and maintains power to the load. During the switch to standby operation, energy in the module’s
ferroresonant transformer continues to supply power to the load. In standby mode, the power supply powers the load until
the battery voltage reaches a low-battery cutoff point.
When utility power returns, the transformer module waits a short time (approximately 10 to 20 seconds) for the utility
voltage and frequency to stabilize and then initiates a smooth, in phase transfer back to AC line power. Once the transfer
is complete, the battery charger recharges the batteries in preparation for the next event.
The Alpha XM3-HP CableUPS contains the following:
• Smart Display
• Hot-swappable Inverter Module
• Built-in Self Test
• Wide input voltage range
•
High efficiency transformer
• Communications menu with DOCSIS
®
parameters (only with
optional DM3, DSM3 or IDH4 installed)
•
Optional factory-installed AlphaDOC (PIM) allows the XM3-HP
to provide programmable current limits for two output channels.
1.0 Introduction
1.1 Alpha XM3-HP Intelligent CableUPS®
Fig. 1-1, Alpha XM3-HP Intelligent CableUPS
•
Optional Smart AlphaGuard (SAG)
•
Optional AlphaAPPs (APPS) card
• Via the Smart Display, the operator can
view all of the power supply’s operating
parameters.
• Troubleshooting tips automatically display
in the Alarm menu screen.
• Built-in metering circuits measure voltage
and current, without the need for external
test equipment.
The duration of battery-backed standby operation depends upon the type and number of batteries and the load on
the power supply.
NOTICE
:
During a no-load start-up, the power supply may reduce output voltage to 75-80% of rated output voltage until a
load of greater than 1.5A is applied.
NOTICE
:
i
SMART
ALPHAGUARD
ACTIVE
STRG A
STRG B
STRG C
STRG D
ALARMS
ALPHA APPS
N
N
OUTPUT 1
OUTPUT 2
16
017-882-B0-001 Rev. E (06/2018)
