Vertiv™ NetSure™ 7100 Series -48 VDC Power System User Manual
2 System Description
-48 VDC @ up to 12000 Amperes Power System
The Vertiv™ NetSure™ 7100 DC Power System is an integrated power system containing -48 VDC rectifiers, optional -48 VDC to
+24 VDC converters, optional -48 VDC to -58 VDC converters, intelligent control, metering, monitoring, and distribution.
This power system is designed to power a load while charging a positive grounded battery. This power system is capable of operating
in a batteryless installation or off battery for maintenance purposes. The power system is designed for operation with the positive
output grounded.
This system consists of the following components.
Distribution Cabinet
The system always includes a minimum of one distribution cabinet, which provides DC distribution through fuses and/or circuit
breakers. The distribution cabinet is factory mounted in a relay rack, on shipping brackets, or in an enclosure as specified when
ordered.
Four different sizes of distribution cabinets are available to accept from one (1) to four (4) distribution panels. A variety of distribution
panels are available that provide load distribution, battery distribution, and dual voltage load distribution for use with -48 VDC to
+24 VDC converters or -48 VDC to -58 VDC converters. These distribution panels are configured to accept either bullet nose type
circuit breakers and TPS/TLS fuseholders, TPH fuses, TPL-B fuses, or GJ/218 circuit breakers. A bulk output panel is also available.
The distribution cabinet may be equipped with low voltage load disconnect (LVLD), low voltage battery disconnect (LVBD), and
manual battery disconnect.
Controller
NCU (NetSure Control Unit): The controller provides power system control (including optional low voltage battery disconnect (LVBD)
and low voltage load disconnect (LVLD) control), rectifier control (including a charge control function), converter control, metering
functions, monitoring functions, and local/remote alarm functions. The controller also supports rectifier temperature compensation if
the system is equipped with a temperature probe(s). Temperature probe(s) may also be designated to monitor ambient temperature
and/or battery temperature. The controller also provides data acquisition, system alarm management, and advanced battery and
energy management. The controller contains a color LCD display and keypad for local access. The controller provides an Ethernet
port and comes with comprehensive webpages for remote access. The controller has SNMP v3 capability for remote system
management. The controller supports software upgrade via its USB port. Refer to the NCU Controller Instructions (UM1M830BNA)
for more information.
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