Vertiv
™
|
Liebert
®
NX
™
225-600kVA Installation Manual | Rev. 8 | 07/2017
23
3.0
OPTIONAL EQUIPMENT
3.1
S
INGLE
-M
ODULE
S
YSTEM
O
PTIONS
3.1.1
Input Circuit Breaker
The input circuit breaker, which feeds the rectifier, is a option because some configurations may not require this
if a maintenance bypass with a rectifier input breaker is located close to the UPS module
3.1.2
External Battery Temperature Sensor—Optional
For systems that do not use Liebert NX Battery Cabinets, an optional temperature sensor can be installed to
monitor the battery cabinet or ambient room temperature. This sensor is connected to the BIB board. This
sensor will allow the Liebert NX UPS to perform temperature compensation charging.
3.1.3
Matching Liebert NX Battery Cabinet
The optional matching Liebert NX Battery Cabinet can be used to obtain the desired autonomy time. The
battery cabinets are designed to be either attached to the UPS or separate from the UPS (for details, see the
Liebert NX Battery Cabinet installation manual, SL-25430, available at Liebert’s Web site:
www.liebert.com
)
3.1.4
Battery Interface Box
The battery interface box contains a battery interface board. The battery interface box is required when an NX
225-600kVA UPS is installed with any non-Liebert battery cabinet, non-matching MBD or Battery Isolation
Switch (BIS).
One battery interface box is required for each non-Liebert battery cabinet, MBD or BIS.
3.1.5
Local EPO Button
A local EPO button with protective cover is available. This option is typically installed at the factory but may be
field-installed by Liebert Services.
3.2
C
OMMUNICATION
AND
M
ONITORING
•
Liebert IS-UNITY-DP
™
card, supports any two of the following: BACnet IP; BACnet MSTP; Modbus RTU; Modbus TCP; and
SNMP versions 1, 2c and 3
•
Liebert IS-485 EXI
™
card connects to Liebert SiteLink-E for Liebert SiteScan
®
Web monitoring
•
ManageUPS
™
card: SNMP v1, Ethernet, HTTP/Web; Modbus RTU and Modbus TCP.
3.2.1
Remote Status Panel
Available as surface mount. The power supply for the remote status panel is factory-installed in the UPS module
and must be ordered with the unit.
3.2.2
Alber Monitoring System
The matching Liebert NX Battery Cabinet allows installing an optional Alber
®
battery monitoring system in the
cabinet. The Alber battery monitoring by Liebert continuously checks all critical battery parameters, such as cell
voltage, overall string voltage, current and temperature. Automatic periodic tests of internal resistance of each
battery will verify the battery’s operating integrity.
Additional capabilities include automatic internal DC resistance tests and trend analysis, providing the ability to
analyze performance and aid in troubleshooting.
3.2.3
Capacity on Demand (Softscale) Upgrades
Modules that were ordered and installed as Capacity on Demand soft-scalable modules can be upgraded to
either full 300kVA/KW (from 225 or 250kVA/kW) or 600kVA KW(400 and 500kVA/kW). If this upgrade is
planned, breakers and conductors should be sized for the final capacity.
