SL-24533.book(SL-24533 FC.fm) - Emerson Network Power

2.7 Network Interface Card (NIC)
Provides multiple connectivity options for the Liebert equipment. Provides standard Ethernet / IP connectivity to
view status and alarm information via HTTP (web pages) and a full SNMP agent for Network Management System
interaction. Ethernet cabling is the responsibility of the customer.
2.8 Multiple Battery Breaker Option
This option provides a multiple battery breaker kit harness that interfaces to the existing system control harness.
The kit contains an Input Contact Isolator (ICI) board allowing the Npower system to sense multiple battery cabinets.
2.9 AS/400 Signal Cable
A 50-foot cable with a 9-PIN subminiature “D” shell plug (male) is provided to connect the alarm contacts from
the UPS to the IBM AS/400.
2.10 AS/400 Extender Cable
Provides an additional 50 feet of interface signal cable with connectors on each end.
2.11 Battery Ground Fault Detector
The DC Ground Fault Detector circuit detects an unbalance in current on the two battery cables. An unbalance in
current means the current is flowing to the ground. Detection of a ground fault condition will trigger an alarm.
2.12 Auto Restart
This option provides the Operator Fuse Kit that allows the Auto Restart feature to function. This feature automatically
restarts the UPS without operator intervention after shutting down due to loss of input power and an endof-battery
discharge shutdown. This option requires a battery cabinet with a motor-operated breaker.
2.13 Input Trap Filter
NOTE
When three or more Battery Circuit Breakers are used, a Multiple Battery
Breaker option must be installed.
This feature allows the Operator to decide whether or not the input trap filter should be disconnected at light
loads to prevent a leading power factor at the input. With this feature, the Operator can select the percent power
level at which the input trap filter contactor is opened.
2.14 Battery Supplement
This feature allows the UPS to continue to supply power to the output from both the rectifier and the battery
when the input voltage sags. This mode of operation will keep conditioned-uninterruptible power at the output
for a longer period of time as compared to just turning off the rectifier when the input voltage sags.
The feature is permanently enabled at the present time, and can be identified by an alarm reading “Battery Supplement
Active”. The alarm will clear when the Input Undervoltage alarm clears and/or if the rectifier turns off
and/or if the Battery Discharge alarm clears. There will be 1-second delay before setting or clearing this alarm.
2.15 Battery Low Warning
The Battery Low Warning Feature alerts the Operator to the battery time remaining in minutes. (See the Operation
and Maintenance Manual.)
4 Option Descriptions