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Introduction
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12. Customer Alarm Interface
This optional interface board allows the input and display of 8 alarms from customer-supplied
contacts, each with a customer-selected name of up to 16 characters. The following attributes can
be user programmed for each alarm: latching, summary, freeze history, sound horn, auto-dial and
time delay (0 to 999.9 seconds).
13. Temperature-Compensated Charging
When battery temperature climbs above a preset limit (typically 77 degrees F), this optional cir-
cuit proportionally reduces float charging voltage to prevent overcharging the battery.
14. Battery Load Testing
When activated, this option forces the battery string to assume the load for a short period of time.
The UPS then compares the test results to data collected during the UPS commissioning to see if
the battery system appears to meet specifications.
15. Automatic Restart
Designed for unattended sites, this option permits a UPS to automatically restart itself and bring
itself online to support the critical load following an extended power outage.