2
15272 Newsboy Circle
Huntington Beach
California 92649
Phone: 714-751-0488
Fax: 714-856-9679
E-Mail: [email protected]
PoweringTheNetwork.com
I) OVERVIEW
The DST is a high density Rackmount Secondary Distribution Panel
designed to accommodate virtually any communication site power
distribution requirement.
The panel accommodates up to 10 or 20 circuit breakers,
depending on model, within a compact housing occupying only 2
RU of rack space. The plug-in breakers only require front access for
quick, easy installation during initial system configuration, as well
as future system expansion.
Model DST-20A
features dual isolated A and B buses, each rated
at 450 amps, which accept up to 10 breakers each and enable
redundant power, dual voltage and/or dual ground reference
configurations. The A and B inputs can also be paralleled to make a
single 900 amp bus (see INSTALLATION OPTION section). Model DST-
10 has a single 450 amp bus which accepts up to 10 breakers.
The plug-in circuit breakers feature compression power contacts
which insert securely into sockets recessed in the panel. Breaker
alarm contacts which are part of the plug-in assembly feed an
output connector at the rear of the panel for optional remote tripped
breaker alarm/indication. A “mid-trip” function of the breaker
moves the toggle to a 90 degree position when an over-current
situation is encountered, providing quick visual identification of
a failed circuit. It distinguishes between an over-current trip and
intentional shut-off, allowing the technician to turn off individual
loads without unnecessarily activating the alarm.
Input/output wiring is via rear access bus bars that accept single
or double hole lugs. There is no internal power wiring or terminals,
eliminating multiple points of failure. Input/output buses are
secured to the load breaker sockets via nickel-plated copper bus
bars.
Mounting brackets are provided to adapt the panel for 19" or
23" racks. Snap-in hole covers are provided for unused breaker
ports and a clear protective toggle guard is provided to prevent
accidental breaker switching and for convenient placement of
identification labels.
The panel is shipped standard without breakers. These are sold
separately and are plugged into the unit during installation. Refer
to the Circuit breaker Specifications and Ordering Guide section at
the end of this manual for available values.
Warranty period for the panel is two years, parts and labor.
For questions or comments on Newmar Distribution Panels,
please call 800-854-3006 or e-mail sales@newmarpower.
com.
II) IMPORTANT SAFETY INFORMATION
1) This equipment shall be installed in a Restricted
Access Location in accordance with Articles
110-16, 110-17 and 110-18 of the National
Electrical Code, ANSI/NFPA 70.
2) Never restrict air flow through the vents of
the DST panel.
3) Reliable Earthing (Grounding) of rackmounted equipment shall
be maintained.
4) The power connections shall be made with copper conductors.
Refer to NEC for proper dc wire gauge.
5) For use with Carling Technologies, C-Series circuit breakers,
special purpose, single pole, rated 80V dc, 5-100 amps, Airpax
LML series, or Circuit Breaker Industries D frame series orientated
so that the ON position is in the UP position. (Suitable breakers are
available from NEWMAR.)
III) MATERIALS LIST
Prior to installation, carefully go over the following list to verify
all necessary items have been provided. Note: Some items are
provided in the hardware accessory package; others are taped to
the main DST assembly or installed. For any missing items please
contact the factory at US Headquarters. (Contact information may
be found on the bottom of any page of this manual.)
Hardware/parts provided with both models
(1 ea.) Rackmount Distribution Panel Assembly
(2 ea.) Mounting Brackets for 19" rack (stamped 13917)*
(6 ea.) 6-32 X 5/16" Phillips Screws (for mounting bracket installation)
(1 ea.) Molex-to-Molex Connector Assembly (four wires installed)
(19 ea./DST-20A, 9 ea./DST-10) Open Circuit Position Covers (factory
installed)
(1 ea.) Clear Protective Toggle Guard
(2 ea.) Toggle Guard Mounting Screws, 6-32 x 1 3/8"
(2 ea.) Toggle Guard Nylon Stand-Offs
(2 ea.) Flat Washers, # 6 (for toggle guard assembly)
(8 ea.) Lock Washers, # 6 (2 ea. for toggle guard assembly; 6 ea. for
mounting bracket installation)
(1 ea.) Circuit Identification Label Set (25 ea., blank)
(1 ea.) Circuit Breaker Extraction Tool
(2 ea.) Circuit Breaker Extraction Screws, 6-32 x 3/8"
(1 ea.) Installation/Operation Manual
Additional hardware provided with model DST-20A
(4 ea.) Bolts, Hex-Head, 1/4" - 20 x 1"
(4 ea.) Flat Washers, 1/4"
(40 ea.) Bolts, Hex-Head, 1/4" - 20 x 3/4"
(4 ea.) Nuts, Hex, 1/4" - 20
(44 ea.) Lock Washers, 1/4"
Additional hardware provided with model DST-10
(2 ea.) Bolts, Hex-Head, 1/4" - 20 x 1"
(2 ea.) Flat Washers, 1/4"
(20 ea.) Bolts, Hex-Head, 1/4" - 20 x 3/4"
(2 ea.) Nuts, Hex, 1/4" - 20
(22 ea.) Lock Washers, 1/4"
(1 ea.) RC-DST, Rear Terminal Cover Assembly (See RC-DST
instructions attached to cover for mounting)
* 23" Mounting Brackets (Newmar Part # 699-3918-0) are not
supplied with DST, contact factory