Vertiv
™
NetSure
™
-48 VDC Power System
System Application Guide
Spec. No: 582140001
Proprietary and Confidential © 2022 Vertiv Group Corp.
SAG582140001
Model No: 801
NLDB
, 801
NLEB
, 801
NL
-
B
Page 1
Revision T, September 28, 2022
SYSTEM OVERVIEW
Description:
-48V DC @ up to 16,800 amperes Power System.
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. This power system is designed for operation with the positive output grounded.
The Vertiv™ NetSure™ 801
NLDB
(208V Input Power Bay), 801
NLEB
(380V/480V Input Power Bay), and
801
NL
-
B
(Distribution Bay) DC Power System is a complete integrated power system containing
rectifiers, intelligent control, metering, monitoring, and distribution. This power system consists of the
following components.
•
Power Bays
The system consists of one (1) Primary Power Bay and up to six (6) Secondary Power Bays.
Each Power Bay can be equipped with up to twenty-four (24) Rectifier Modules.
Each Power Bay contains a Monitor and Control
Panel. In the Primary Power Bay, this panel
houses the Meter-Control-Alarm (MCA)
assembly. This panel in the Primary Power Bay
also houses the optional LMS Main CPU circuit
card of the integrated LMS Monitoring System. In
a Secondary Power Bay, this panel can be
equipped with an optional LMS Expansion CPU
circuit card. (The optional LMS Monitoring
System provides a higher level of monitoring and
controlling capabilities to the power system.)
The Monitor and Control Panel in both Primary
and Secondary Power Bays contain a seven-slot
card cage to house MCA alarm relay circuit cards,
MCA input/output (I/O) circuit cards, and
optional LMS I/O circuit cards. (If a Secondary
Power Bay is to be equipped with optional LMS
I/O circuit cards, it must also be equipped with
the LMS Expansion CPU circuit card.)
•
Distribution Bays
The system consists of one (1) to eight (8)
Distribution Bays.
Each Distribution Bay provides four (4)
distribution buses.
Each distribution bus accepts a choice of
218-type circuit breakers and TPL-type fuses.
A Distribution Bay may also be equipped with an
optional distribution panel which accepts a choice
of TPS/TLS-type fuseholders or Bullet Nose-type
circuit breakers.
•
Rectifier Modules
The Rectifier Modules provide load power,
battery float current, and battery recharge
current during normal operating conditions.
Power Bay
