Alpha Technologies XM2, XM2-HV, XM2-HP - Manual (Page 23)

1.3 Recommended Enclosure System Options
These options can be factory installed or upgraded in the field by the user:
Protective Interface Module (PIM)
The PIM protects system components by shutting down the load during overcurrent and short
circuit conditions. The PIM has an operator programmable overcurrent threshold (3A-24A)
and a programmable overcurrent tolerance period, which specifies the time (1-10 seconds)
an overcurrent condition is permitted before the output shuts down.
Using the programmable retry limit, the operator can select how many times (0-40) after a
programmable delay (5-301 seconds) the PIM will attempt to reconnect an output that has
been shut down. Once the limit is reached, the power supply automatically retries once
every 30 minutes until the fault clears. The PIM also provides N+1 redundancy in system
configurations with programmable dual outputs.
Local and Remote Indicator (LRI)
The LRI (red) lamp is located on the outside of pole-mount enclosures. Using this simple
form of status monitoring operators can check the operational status of the power supply
without having to climb the pole and open the enclosure. During normal AC line operation,
the LRI remains off. The LRI comes on only when the power supply is running in standby
mode. Whenever a fault is detected during self-test, the LRI flashes to indicate that service is
required.
AC Indicator (ACI)
The AC Indicator (green lamp) is located next to the LRI on the outside of pole-mount
enclosures and also acts as a simple form of status monitoring so cable technicians can
check the output status of the power supply without having to climb the pole and open the
enclosure. As long as there is voltage present at the output, the ACI remains on. To provide
much longer life than the original light bulb design, use the ACI-LL (long life LED). Models for
60V and 90V are available. Do not use ACIs for ground mount enclosures.
LA-P+, LA-P-120T 120V, 240V (Lightning Arrestor)
The LA-P+ plugs directly into the enclosure’s convenience outlet and provides additional
protection from voltage spikes caused by lightning and other power disturbances. It
eliminates the need for hard-wired MOVs. No additional wiring is necessary.
LA-P+ With Status Monitoring
Incorporates the same features as the LA-P+, with the additional benefit of Status Monitoring
capability.
Co-axial Surge Arrestor
Alpha recommends using coaxial surge suppression for enclosure protection. The Coax
Surge Protector (Alpha P/N 162-028-10) includes 75 ohm surge suppressor and mounting
hardware.
APP90S /APP9022S (Service Power Supply)
The APP90S/APP9022S is a portable, non-standby power supply that provides conditioned
AC power to the load when the main power module is out of service. An internal tap lets the
APP90S/APP9022S be set for 90/75/60Vac applications. Use a 15A or 25A SPI (Service
Power Inserter) to transfer power from the APP9015S/APP9022S to the load.
23 017-805-B0-010 Rev. K2