NewMar DST-20A Installation instructions

1
15272 Newsboy Circle
Huntington Beach
California 92649
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
PoweringTheNetwork.com
Rackmount Distribution Panel
Models:
DST-20A
DST-10
INSTALLATION/OPERATION INSTRUCTIONS
Table of Contents
Section Topic Page
I) OVERVIEW 2
II) IMPORTANT SAFETY INFORMATION 2
III) MATERIALS LIST 2
IV) PANEL INSTALLATION 3
A) Panel Mounting
B) Input Wiring
C) Output/Load Wiring
V) CIRCUIT BREAKER AND SUMMARY ALARM INSTALLATION 3
A) Breaker Installation
B) Breaker Removal
C) Remote Summary Alarm Wiring
VI) CIRCUIT BREAKER FUNCTION 4
VII) INSTALLATION OPTION - Single 900 Amp Bus 5
(Option available for model DST-20A only)
VIII) SPECIFICATIONS 5
IX) CIRCUIT BREAKER SPECIFICATIONS AND ORDERING GUIDE
X) DST ACCESSORIES 5
XI) TYPICAL WIRING DIAGRAMS 6
XII) OUTLINE & MOUNTING DRAWING 7
M-DST-20A
As Of 112718
Model DST-20A pictured
with 10 optional
breakers installed
31ZT

2
15272 Newsboy Circle
Huntington Beach
California 92649
Phone: [phone]
Fax: [phone]
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

3
15272 Newsboy Circle
Huntington Beach
California 92649
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
PoweringTheNetwork.com
IV) PANEL INSTALLATION
A) Panel Mounting
Two sets of mounting brackets are provided (select pair required for
either 19" or 23" rack), and six 6-32 x 5/16" pan head phillips screws
with six # 6 lock washers are provided for attaching the brackets to
the assembly. Two sets of tapped attachment holes in the assembly
sides facilitate either flush or 6" forward mounting.
B) Input Wiring
Note: Model DST-10 has only a single 450 amp bus (BUS A). All
references in this manual to dual bus applications apply to model
DST-20A only.
Hot input is wired to the heavy duty input bus bar(s) at the rear
panel. These are the vertically oriented bus bars on either side
labeled “BUS A” and “BUS B”. The DST may be used with either
positive or negative ground applications. Each bus is rated at
450 amps and in model DST-20A, they are electrically isolated,
permitting redundant power, dual voltage and/or dual ground
reference configurations in the same unit. (The dual buses of model
DST-20A may also be paralleled to make a single 900 amp bus;
refer to the OPTIONS section of this manual.)
Wiring should be terminated with ring lugs to ensure a safe
installation. Two holes are provided to accommodate double hole
lugs. Both holes will accept either 1/4" or 5/16" hardware and the
rear hole is elongated to enable adjustment for center-to-center
hole spacing between 3/4" and 1". Use the 1/4" - 20 x 1" hex head
bolts, and 1/4" lock washers, flat washers and hex nuts which have
been provided for securing the lugs, or obtain and install 5/16"
hardware. (Note: The input bus bars are isolated from the case with
a nylon spacer which allows a certain degree of "play". If a small
amount of bus bar shifting is noted when wiring, this is normal.)
Recommended torque for all 1/4 inch hardware is 50 inch-pounds.
C) Output/Load Wiring
(Refer to N.E.C. or local codes for any questions regarding proper
d.c. wire gauges and color codes.)
Twenty output bus bars are provided with model DST-20A; ten are
provided with model DST-10. Use of any of the outputs requires
installation of a plug-in breaker at that position. Outputs 1-10 are
fed by BUS A only; outputs 11-20 are fed by BUS B only (unless
buses are paralleled).
Wires are attached to the numbered output bus bars using the
provided 1/4 - 20 x 3/4" hex head bolts and 1/4" lock washers.
Center-to-center spacing for double hole lugs is 5/8".
V) CIRCUIT BREAKER AND SUMMARY ALARM
INSTALLATION
A) Breaker Installation
The DST accepts only specially designed plug-in “mid-trip” circuit
breakers with auxiliary contacts which are available from
NEWMAR. (The mid-trip function is explained later). Refer to the
Circuit Breaker Ordering Guide at the end of this manual for
available values.
Note: It is recommended that only breakers obtained from
NEWMAR should be used with this panel to assure proper fit and
operation. When selecting the breaker use the following guideline:
Where loads will be in continuous operation for three hours or
more, then the breaker value should be at least 120% of normal
load current.
1) Remove the front panel of the assembly (held in place with four
flat-head phillips screws).
2) Install each circuit breaker by lining up the push-in studs of
the breakers with the internal mating sockets and pushing firmly
into place. When pressed into place, the two top auxiliary contact
terminals in the middle of the breaker will press against the mating
clips. (The bottom auxiliary contact is unused in this installation.)
3) Align the front panel into position over the breakers and onto
the assembly. Knock out any plastic open position covers, as
necessary. It may be necessary to nudge breakers individually up
or down to achieve proper alignment.
4) Replace the front panel mounting screws.
5) Re-install plastic covers over any unused breaker positions.
6) Remove the plastic film from the clear protective breaker toggle
guard and install as shown in FIGURE 1. Apply the provided labels
to the guard for circuit identification, if desired.
FIGURE 1: Toggle Guard Installation
Front Panel
Protective Toggle Cover
Note: 100 and 75 amp breakers may
not be installed side by side. There
must be an open space or a breaker
rated at 50 amps or
less between them.
Toggle Guard Mounting Screw
Flat WasherLock Washer
Nylon Stand-Off

4
15272 Newsboy Circle
Huntington Beach
California 92649
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
PoweringTheNetwork.com
B) Breaker Removal
The front panel must be removed in order to remove any breaker.
It is not necessary to remove the toggle guard in order to remove
the front panel.
A special extraction tool (with screws) has been provided to
facilitate breaker removal without putting unnecessary lateral
stress on the internal sockets and mating clips. Screw the breaker
extraction screws part way in, then use the tool to pull the breaker
firmly out (as shown in FIGURE 2).
FIGURE 2: Circuit Breaker Extraction
C) Remote Summary Alarm Wiring
A connector at the rear of the panel enables optional installation
of a remote summary alarm to indicate when any breaker has
been over-current tripped. Separate contacts are provided for
each bus to activate Bus A and Bus B alarms independently, if
desired (Bus A only for model DST-10). The alarm contacts are
configured Normally Open (N.O.) and close when a breaker is
tripped (not when shut off manually—see Circuit Breaker Function
section). Diagrams on each side of the connector (labeled
“BREAKER STATUS”) in the center of the rear panel illustrate the
contactor positions when any breaker in the bus is in a TRIPPED
state.
A 35" four wire connector harness is provided for remote alarm
indication (two wires for each bus). One of two different versions
have been supplied:
1) Orginal version: Molex connectors at both ends for compatible
connection with the earlier PMF-400 Power Function Manager
(LVD, Digital Meter: volts/amps, load distribution, alarms). For
application not involving a PFM-400, clip-off one of the connectors
and use parallel splices and 18 AWG wire to connect the DST
alarm contacts to your monitoring system.
2) Later version: Molex connector on one end and pigtail on
opposite end.
PFM-400 Wiring: For version 1 alarm harness, plug one end of the
harness into the keyed connector on the rear of the DST which is
labeled BREAKER STATUS. Note, the harnes is reversible, therefore
it does not matter which end is plugged in. Plug the other end into
an unused STATUS CONTACT INPUT connector on the rear of the
PFM. (Typically, the #5/#6 connector will be used when Power
Modules are connected to the PFM, but the summary alarm will
function the same in either the #1/#2 or #3/#4 connector positions,
as well).
PFM-500 Wiring: For version 2 alarm harness, plug the connector
end of the harness into the keyed connector on the rear of the DST
which is labeled 'BREAKER STATUS'. The pigtail end can be wired
to an unused STATUS CONTACT input on the rear panel of the
PFM-500; connect the Blue and Yellow wires (DST-10) to terminals
#1 and #3. For a DST-20A, parallel Brown and Blue wires and
connect to terminal 1 and parallel Orange and Yellow wires and
connect to terminal #3.
If all STATUS CONTACT positions are occupied (PFM-400) or wired
(PFM-500) (i.e., five or six Power Modules are in the system),
and a summary alarm from the DST is required, this may be
accomplished through parallel wiring of the status wires. Please
contact the factory for information on how to perform this
modification.
Note: Although the breaker status contacts in the DST operate in
a Normally Open configuration, the summary alarm contacts
within the PFM are Form C; that is, the connector labeled OUTPUT
SUMMARY ALARM on the rear of the PFM may be wired in either
Normally Open or Normally Closed configuration.
When wired to the PFM in this fashion any tripped breaker within
the DST will result in illumination of the CHECK SYSTEM light on
the front of PFM, as well as activation of the PFM summary alarm
contacts. For additional information on PFM operation, refer to the
manual provided with that product.
Caution: Status contact wiring cannot be paralleled in
applications where the A and B buses are of different voltages or
have a different ground reference.
Power through the alarm contacts must not exceed the following:
1 amp @ 125 VAC
5 amps @ 30 VDC
VI) CIRCUIT BREAKER FUNCTION
The plug-in circuit breaker functions as an on/off load switch and
provides over-current protection specified by its amperage rating.
However, the special mid-trip feature enables the technician to
distinguish between a condition where the breaker has been
tripped by over-current and where it has been intentionally
shut off.
When the circuit breaker is manually shut off, the alarm contacts
within the DST will remain in the “OPEN” position, to avoid setting
off alarms unnecessarily when load disconnect is intentional.
When the breaker is over-current tripped, the toggle will rest at a
90 degree position (for easy identification of the tripped circuit),
and the alarm contacts will be in the “CLOSED” position. To reset,
(after the overload condition has been corrected) simply switch
the breaker off and back on again. To test the alarm, place a PBA
breaker in the 'ON' position and slam the bottom of the breaker
Plug-In Breaker
Extraction Tool
Breaker
Extraction
Screws

5
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Phone: [phone]
Fax: [phone]
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on a table top. The handle should move to mid-trip position. Plug
breaker into DST and verify alarm contact closure on rear of panel
connector.
VII) INSTALLATION OPTION - Single 900 Amp Bus
(For model DST-20A only)
If the installation requires, the 450 amp A and B input buses may
be paralleled to constitute a single 900 amp bus. This may be
accomplished by:
Running separate 450 amp cables to each of the buses from a
single power source or power source tie point, or
Running a single 900 amp cable to the A bus and a second 450
amp cable from the A bus to the B bus (or vice versa).
Refer to the Typical Wiring Diagrams on page 9. See Single Bus
Installation.
Note: The maximum total breaker current rating for positions 1-10
(BUS A) and positions 11-20 (BUS B) remains at 450 amps each, even
when the two buses are wired in parallel.
VIII) SPECIFICATIONS
Electrical:
Nominal Input/Output:
48, 24 or 12 VDC; positive or negative ground
Total Circuit Capacity:
DST-20A: 20 breakers
DST-10: 10 breakers
Total Current Capacity:
DST-20A: 900 amps (dual 450 amp buses)
DST-10: 450 amps (one 450 amp bus)
Maximum Circuits per Bus: 10
Environmental:
Temperature Rating: Up to 50° C ambient
Alarm/Indicator:
Tripped Breaker Contacts via Rear Panel Connector; Normally
Open (N.O.) configuration.
Note: Separate contacts are provided for each bus on model DST-20A. A
and B status contact wiring cannot be paralleled in applications where
the buses are at different voltages or ground reference.
Maximum power through the alarm contacts:
1 amp @ 125 VAC
5 amps @ 30 VDC
Mechanical:
Bus Bars: Nickel-plated copper; accept single or double hole lugs
Front Panel: Anodized aluminum
Cover and Rear Panel: Vinyl-laminated aluminum
Dimensions: 3.5" H x 17" W* x 11.75" D; Occupies 2 RU
*19" and 23" rack mounting brackets provided
Weight (without breakers):
DST-20A: 12 lbs. DST-10: 9 lbs.
Compliances
UL Listed: Listing # 31ZT
UL 1801 First Edition: Subject Standard for Power Distribution Center
for Telecommunications Equipment
C22.2 No. 225-M90: Canadian Standards for Telecommunication
Equipment Carries the CE Mark
Warranty: Two Years
IX) CIRCUIT BREAKER SPECIFICATIONS AND ORDERING GUIDE
Current Ratings: See list below (breaker value stamped beside
toggle)
Voltage Rating: 80 VDC max.
Type: Magnetic-Hydraulic Plug-in with Auxiliary Contacts
(Normally Open) and Mid-Trip Function
UL Listed Telecom Breaker
CSA Certified
10,000 Amp Interrupt Capacity
To order additional or replacement breakers for the DST refer to the
following NEWMAR model or Carlingswitch part numbers:
Rating NEWMAR Model
5 amp PBA-5
6 amp PBA-6
10 amp PBA-10
15 amp PBA-15
20 amp PBA-20
25 amp PBA-25
30 amp PBA-30
40 amp PBA-40
50 amp PBA-50
63 amp PBA-63
75 amp PBA-75
100 amp PBA-100
Note: Other circuit breaker values are available on a special order
basis. Typical lead time is 10 weeks.
X) DST ACCESSORIES
Ground Bus Bar Assembly
* 800 amps: Model BBA-800
Rear Terminal Cover Assembly
* Specify Model RC-DST

6
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Huntington Beach
California 92649
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
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XI) TYPICAL WIRING DIAGRAMS
12
400 A
BUS B
2 EA 400 AMP BUSES
800 AMPS, MAX.
12 VDC, 24 VDC, OR 48 VDC
APPLICATION:
OUTPUTS 11-20, BUS B
17
20
19
18
13
16
15
14 4
OUTPUTS 1-10, BUS A
8
STATUS
BREAKER
TRIPPED
9
10
11
5
6
7
CHASSIS
GND
1
3
2
BUS A
400 A
12 VDC, 24 VDC, OR 48 VDC
2 EA 400 AMP BUSES
19
800 AMPS, MAX.
APPLICATION:
20
BUS B
400 A
17
18
OUTPUTS 11-20, BUS B
14
13
16
15
OUTPUTS 1-10, BUS A
8 6
5
7
BUS A
CHASSIS
4
GND
3
2
1
400 A
DETAIL "A"
B
TRIPPED
A
BREAKER
TRIPPED
B
TRIPPED
STATUS
A
9
BREAKER
TRIPPED
B
12
TRIPPED
STATUS
11
A
10
B
DETAIL "A"
STATUS
BREAKER
TRIPPED
A
TRIPPED
BLUE
YELLOW
BROWN
ORANGE
Alarm Connector Harness
RETURN/GROUND BUS BAR (NOT INCLUDED)
RETURN/
HOT
GROUND
RETURN/
GROUND
HOT
TO BUS "B"
LOAD
CHASSIS GROUND
BUS "B"
HOT SOURCE
BUS "A"
HOT SOURCE
DST-20A (SHOWN)
AS VIEWED FROM
WIRING SIDE
-SPLIT BUS INSTALLATION, MODEL DST-20A ONLY-
UP TO 10 CIRCUITS PER BUS ("A" & "B")
450 AMPS, MAX PER BUS
TO BUS "A"
LOAD
FROM HOT SOURCES
e.g. :
-UNSWITCHED OUTPUT
OF PFM-500
-RECTIFIER OUTPUT
-LOW VOLTAGE LOAD
DISCONNECT
SPECIFY MODEL BBA-400 (400 AMP) OR MODEL BBA-800 (800 AMP)
SPECIFY MODEL BBA-400 (400 AMP) OR MODEL BBA-800 (800 AMP)
RETURN/GROUND BUS BAR (NOT INCLUDED)
-SINGLE BUS INSTALLATION-
20 CIRCUITS
900 AMPS, MAX
e.g. :
FROM HOT SOURCE
DISCONNECT
-LOW VOLTAGE LOAD
-RECTIFIER OUTPUT
-UNSWITCHED OUTPUT
OF PFM-500
CHASSIS GROUND
DST-20A (SHOWN)
WIRING SIDE
AS VIEWED FROM
HOT
GROUND
RETURN/
HOT
GROUND
RETURN/
TO DC LOADS
(450 A, BUS "A" & 450 A , BUS "B")
TO ALARM
CIRCUIT
SEE DETAIL "A"
CIRCUIT
ORG
TO ALARM
BRN
CIRCUIT
TO ALARM
SEE DETAIL "A"
YEL
BLU
CIRCUIT
TO ALARM
BRN
ORG
YEL
BLU
DST-20A:
DST-10:
450 AMPS, MAX
10 CIRCUITS
*
*
MODEL DST-20A, ONLY
*
*
From Return/GND
Sources
From Return/GND
Sources

7
15272 Newsboy Circle
Huntington Beach
California 92649
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
PoweringTheNetwork.com
XII) OUTLINE AND
MOUNTING DRAWING
.82
1.00
Ø.312 X .500 SLOT
Ø.312
.63 TYP
1/4-20 PRESS-IN NUT (TYP)
ROTATED VIEW
1.
1.
1.
1.
1.
1.14
10.56
8.56
2X 6.00
3.47
17.00
8X .25
2X 3.00
2X 1.75
19.00
POSITIONS 11-20 AND ONE 450 AMP LINE BUS ARE NOT PART OF DST-10.
4X 18.25
Note: All Dimensions In Inches