1
DC Power for
Business-Critical Continuity™
High efficiency eSure
™
rectifiers provide dramatic
reductions in energy costs and advanced features
for legacy Lorain
®
A50B50 based DC power systems.
Product Overview
The NetSure
®
A50B50 DC Power Retrofit provides a unique solution for maintaining and
upgrading legacy Lorain
®
DC power systems based on the A50B50 rectifier. Specially
designed frames mount directly into existing rectifier slots without the need for elec-
trical or mechanical adjustments. These frames accommodate the R48-3500E and
R48-3200E eSure
™
high efficiency rectifiers as well as the standard R48-3200 rectifier.
Two distinct frames are available. Model A50IFRM accommodates a single rectifier
and controller. Model A50EFRM houses a single rectifier. Each system starts with one
A50IFRM. The A50EFRM provides growth for up to thirty-six rectifiers in a single system.
The NetSure
®
A50B50 DC Power Retrofit can be used with or without the original
A50B50 rectifiers in the same system. The frames contain the necessary connections
and circuitry to manage the monitoring and alarming of all rectifiers.
The system’s original meter-control-alarm panel can remain in place. Or, if desired,
the NetSure
®
controller can be used instead, providing significant enhancements over
existing electronics including programmable alarming, customer I/O and local/remote
access over Ethernet.
Application
The NetSure
®
A50B50 DC Power Retrofit is designed for use in existing Lorain
®
DC
power Systems containing A150CAB or A200CAB rectifier shelves designed initially to
accommodate A50B50 rectifiers. The NetSure
®
A50B50 DC Power Retrofit can be used
in conjunction with or in place of A50B50 rectifiers with the following specification
numbers: 486522200, 486523401,
486523403, 486523406, 486524801,
486526401.
Additional information
Additional specification, engi-
neering and installation
information may be obtained by
requesting SAG588250400
(system application guide) and
UM588250400 (User Manual).
NetSure
®
A50B50
DC Power Retrofit
Key Features
Increases efficiency from 85%
to >96%; reduces energy
consumption by >11%;
reduces heat loss by >73%
NetSure
®
reliability improves
mean time between failure
(MTBF)
Constant power limiting
feature increases current
capacity to 73 amps per
rectifier
Plugs right into A50B50
rectifier slot without any
electrical or mechanical
adjustments to existing shelf
or system
Operates with or without
original A50B50 rectifiers in
same system
Enhanced controller features
including single point
adjustment and remote access
via Ethernet
127D-NSA50B50 / 0211
