DuraComm RMI-400W-1U User manual

Owners Manual
RMI
-400W-1U
400W Rackmount
-48VDC to 120VAC Inverter
M
-RMI-400W-1U 051123
© Newmar Power Supplies. The information contained herein is subject
to change without notice. Newmar shall not be liable for technical or
editorial errors or omissions contained herein. All rights reserved.

Owners Manual
1
Phone
1.800.467.6741
Email
[e-mail]
Website
www.duracomm.com
Table Of Contents
Table of Contents
Table Of Contents ......................................................................................................................................................................... 1
Description..................................................................................................................................................................................... 2
Specifications................................................................................................................................................................................. 2
Important Safety Instructions ..................................................................................................................................................... 3
Product Overview.......................................................................................................................................................................... 4
Installation ..................................................................................................................................................................................... 4
Conductor Pre-treatment ............................................................................................................................................................ 5
RECOMMENDED COPPER WIRE SIZE FOR CURRENT CAPACITY.............................................................................................. 5
Front Panel Layout........................................................................................................................................................................ 4
Rear Panel Wiring.......................................................................................................................................................................... 4
LIMITED WARRANTY ..................................................................................................................................................................... 6
Contact Us...................................................................................................................................................................................... 7

Owners Manual
2
Phone
1.800.467.6741
Email
[e-mail]
Website
www.duracomm.com
Features
•True-sine wave output
•Wide operating temp range
•4 NEMA 5-20R AC receptacles (1 front, 3 rear)
•Standard 19″ 1U Rackmount
•Built-in protection
oInput – reverse polarity/DC low
alarm/DC low shutdown/over voltage
oOutput – short circuit/overload/over
temperature
Specifications
Model RMI-400W-1U
Electrical
Output Voltage 120 VAC
Output Frequency 50/60 ±0.1 Hz
Maximum Power 400 W
Waveform
True sine wave (THD <3%)
Input Voltage Range -40 to -66 VDC
Nominal Input Voltage -48 VDC
Efficiency 93%
Input Current 10 A
Inline Fuse 10A x2
Environmental
Working Temperature Range -20 to +70°C
Working Humidity 20-90% RH non-condensing
Storage Temperature Range -30 - *70°C
Storage Humidity 10-95% RH non-condensing
Vibration 10-500hz, 3G 10min/1 cycle, 60 min each along X, Y, Z axis
Mechanical
Length 13”
Width 19”
Height 1.75”

Owners Manual
3
Phone
1.800.467.6741
Email
[e-mail]
Website
www.duracomm.com
Model RMI-400W-1U
Weight 6 Lbs.
Safety & EMC
Safety Standards CB IEC62368
Withstand Voltage DC I/P - AC O/P:3.0KVAC AC O/P - FG:1.5KVAC
EMC Emission
Parameter
Standard
Test Level
Radiated FCC Test Level Class A
Harmonic Current BS/EN61000-3-2
Voltage Flicker BS/EN6100-3-3
EMC Immunity
BS EN/EN55024, BS EN/EN55035
Parameter
Standard
Test Level
ESD
BS/EN6100-4-2
Level 4, 15KV air; Level 4, 9KV contact
Radiated BS/EN6100-4-3 Level 3, 10 V/m
Magnetic Field BS/EN6100-4-8 Level 4, 30A/m
*NOTE: Specifications are subject to change without notice.
Important Safety Instructions
THESE INSTRUCTIONS ARE INTENDED FOR USE BY A TECHNICIAN FAMILIAR WITH ELECTRONIC PRODUCTS.
WARNING: There are no user serviceable parts inside. Service must be referred to a qualified factory technician or
factory trained technician. DO NOT operate the unit in a hot, enclosed environment or compartment. Be sure
adequate ventilation for cooling is provided since heat buildup will shorten component life.
NOTE: The individual user should take care to determine prior to use or installation whether this device is suitable,
adequate, and safe for the use intended. Since individual applications are subject to numerous variations,
DuraComm makes no representation or warranty as to the merchantability, suitability, or fitness of these units for
any specific application.

Owners Manual
4
Phone
1.800.467.6741
Email
[e-mail]
Website
www.duracomm.com
Product Overview
Provide seamless back-up power for AC powered communications equipment from the site’s 48 VDC
power system.
Installation
DO NOT block any of the cooling vents on the sides and/or cooling fan. Always allow adequate ventilation by not
installing the unit inside tightly closed spaces.
Front Panel Layout
Rear Panel Wiring
Breaker
Power Switch
AC Terminal
Power
Indicator
AC Terminal x3
DC Input Terminal

Owners Manual
5
Phone
1.800.467.6741
Email
[e-mail]
Website
www.duracomm.com
Conductor Pre-treatment
All kinds of copper conductors can be clamped without treatment. DO NOT solder tin stranded conductors. The
solder yields and fractures under high pressure. The result is increased contact resistance and excessive
temperature rise. Additionally, corrosion has been observed due to the fluxes. Notch fractures at the transition
from the rigid tinned part to the flexible conductors are also possible. Ferrules can be used as a protection when
wiring stranded conductors. Copper ferrules prevent the current transfer from being influenced by dissimilar
metals and remove the risk of corrosion. Always use the correct tool to crimp the ferrule.
RECOMMENDED COPPER WIRE SIZE FOR CURRENT CAPACITY
(Insulated Wire, Single Conductor in free air)
Current Level in Amperes Wire Size
<7 AMPERES
20 AWG Up to 5 feet
18 AWG Up to 10 feet
14 AMPERES
18 AWG Up to 5 feet
16 AWG Up to 10 feet
20 AMPERES
16 AWG Up to 5 feet
14 AWG Up to 10 feet
30 AMPERES 14 AWG Up to 5 feet
12 AWG Up to 10 feet
40 AMPERES
12 AWG Up to 5 feet
10 AWG Up to 10 feet
50 AMPERES
10 AWG Up to 5 feet
8 AWG Up to 10 feet
70 AMPERES
8 AWG Up to 5 feet
6 AWG Up to 10 feet
100 AMPERES 6 AWG Up to 5 feet
4 AWG Up to 10 feet

Owners Manual
6
Phone
1.800.467.6741
Email
[e-mail]
Website
www.duracomm.com
LIMITED WARRANTY
DuraComm warrants to the initial end user, each power supply manufactured by DuraComm to be free from
defects in material and workmanship, when in normal use and service for a period of three years from the date of
purchase, from an authorized DuraComm dealer.
Should a product manufactured by DuraComm fail or malfunction due to manufacturing defect, or faulty
component, DuraComm, at its option, will repair or replace the faulty product or parts thereof, which, after
examination by DuraComm, prove to be defective or not operational according to specifications in effect at the time
of sale to the initial end user. The product that is replaced or repaired under the provisions of this warranty, will be
warranted for the remainder of the original warranty period, only, and will not extend into a new three-year
warranty period.
The limited warranty does not extend to any DuraComm product which has been subject to misuse, accidental
damage, neglect, incorrect wiring not associated with manufacture, improper charging voltages, or any product
which has had the serial number removed, altered, defaced, or changed in any way.
DuraComm reserves the right to change, alter, or improve the specifications of its products at any time, and by so
doing, incurs no obligation to install or retrofit any such changes or improvements in or on products manufactured
prior to inclusion of such changes.
DuraComm requires any product needing in or out of warranty service to be returned to DuraComm. All requests
for warranty service must be accompanied by proof of purchase, such as bill of sale with purchase date identified.
DuraComm is not responsible for any expenses or payments incurred for the removal of the product from its place
of use, transportation, or shipping expenses to the place of repair, or return expenses of a repaired or replacement
product to its place of use.
The implied warranties which the law imposes on the sale of this product are expressly LIMITED, in duration, to the
three (3) year time period specified herein. DuraComm will not be liable for damages, consequential or otherwise,
resulting from the use and operation of this product, or from the breach of this LIMITED WARRANTY.
Some states do not allow limitations on the duration of the implied warranty or exclusions or limitations of
incidental or consequential damages, so said limitations or exclusions may not apply to you. This warranty gives you
specific legal rights which vary from state to state.
This warranty is given in lieu of all other warranties, whether expressed, implied, or by law. All other warranties,
including WITHOUT LIMITATION, warranties of merchantability and fitness or suitability for a particular purpose, are
specifically excluded. DuraComm reserves the right to change or modify its warranty and service programs without
prior notice.

Owners Manual
7
Phone
1.800.467.6741
Email
[e-mail]
Website
www.duracomm.com
Contact Us
Location
6655 Troost Avenue
Kansas City, MO. 64131
Phone
816.472.5544
1.800.467.6741
Fax
816.472.0959
Email
Email purchase orders to
[e-mail]